./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/test-easy7.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f247005-5f96-4969-8624-5a5b861e01b0/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f247005-5f96-4969-8624-5a5b861e01b0/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f247005-5f96-4969-8624-5a5b861e01b0/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f247005-5f96-4969-8624-5a5b861e01b0/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/test-easy7.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f247005-5f96-4969-8624-5a5b861e01b0/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f247005-5f96-4969-8624-5a5b861e01b0/bin/uautomizer-vX5HgA9Q3a --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 89875838ba00841ab95f284d6aeb82a1a762d2b06c5f173202307480dc57b4e4 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-21 16:45:08,444 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:45:08,447 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:45:08,493 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:45:08,494 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:45:08,498 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:45:08,501 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:45:08,506 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:45:08,509 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:45:08,512 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:45:08,513 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:45:08,514 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:45:08,515 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:45:08,516 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:45:08,517 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:45:08,518 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:45:08,519 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:45:08,520 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:45:08,522 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:45:08,532 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:45:08,534 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:45:08,537 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:45:08,540 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:45:08,541 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:45:08,555 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:45:08,555 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:45:08,556 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:45:08,558 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:45:08,558 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:45:08,559 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:45:08,560 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:45:08,561 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:45:08,563 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:45:08,564 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:45:08,565 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:45:08,566 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:45:08,566 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:45:08,567 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:45:08,567 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:45:08,569 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:45:08,570 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:45:08,572 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f247005-5f96-4969-8624-5a5b861e01b0/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 16:45:08,616 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:45:08,617 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:45:08,618 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:45:08,618 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:45:08,619 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 16:45:08,619 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 16:45:08,620 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:45:08,620 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:45:08,621 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:45:08,621 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:45:08,622 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 16:45:08,623 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:45:08,623 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 16:45:08,623 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:45:08,623 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 16:45:08,624 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 16:45:08,624 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 16:45:08,624 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 16:45:08,625 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 16:45:08,625 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:45:08,625 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 16:45:08,625 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:45:08,626 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:45:08,626 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 16:45:08,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:45:08,627 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:45:08,627 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 16:45:08,627 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 16:45:08,628 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 16:45:08,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 16:45:08,629 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 16:45:08,629 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 16:45:08,629 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 16:45:08,630 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f247005-5f96-4969-8624-5a5b861e01b0/bin/uautomizer-vX5HgA9Q3a/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f247005-5f96-4969-8624-5a5b861e01b0/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 89875838ba00841ab95f284d6aeb82a1a762d2b06c5f173202307480dc57b4e4 [2022-11-21 16:45:08,912 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:45:08,933 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:45:08,935 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:45:08,937 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:45:08,937 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:45:08,938 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f247005-5f96-4969-8624-5a5b861e01b0/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/weaver/test-easy7.wvr.c [2022-11-21 16:45:11,996 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:45:12,241 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:45:12,242 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f247005-5f96-4969-8624-5a5b861e01b0/sv-benchmarks/c/weaver/test-easy7.wvr.c [2022-11-21 16:45:12,249 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f247005-5f96-4969-8624-5a5b861e01b0/bin/uautomizer-vX5HgA9Q3a/data/6ab968782/78acf502a5cd472fa820d13f039f5d01/FLAGdd54b5819 [2022-11-21 16:45:12,265 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f247005-5f96-4969-8624-5a5b861e01b0/bin/uautomizer-vX5HgA9Q3a/data/6ab968782/78acf502a5cd472fa820d13f039f5d01 [2022-11-21 16:45:12,267 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:45:12,269 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:45:12,270 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:45:12,270 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:45:12,282 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:45:12,283 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:45:12" (1/1) ... [2022-11-21 16:45:12,284 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6923ccfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:45:12, skipping insertion in model container [2022-11-21 16:45:12,284 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:45:12" (1/1) ... [2022-11-21 16:45:12,292 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:45:12,308 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:45:12,521 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f247005-5f96-4969-8624-5a5b861e01b0/sv-benchmarks/c/weaver/test-easy7.wvr.c[1872,1885] [2022-11-21 16:45:12,527 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:45:12,539 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 16:45:12,568 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f247005-5f96-4969-8624-5a5b861e01b0/sv-benchmarks/c/weaver/test-easy7.wvr.c[1872,1885] [2022-11-21 16:45:12,577 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:45:12,595 INFO L208 MainTranslator]: Completed translation [2022-11-21 16:45:12,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:45:12 WrapperNode [2022-11-21 16:45:12,596 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:45:12,597 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 16:45:12,597 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 16:45:12,598 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 16:45:12,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:45:12" (1/1) ... [2022-11-21 16:45:12,615 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:45:12" (1/1) ... [2022-11-21 16:45:12,638 INFO L138 Inliner]: procedures = 21, calls = 20, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 54 [2022-11-21 16:45:12,639 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 16:45:12,640 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 16:45:12,640 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 16:45:12,640 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 16:45:12,649 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:45:12" (1/1) ... [2022-11-21 16:45:12,650 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:45:12" (1/1) ... [2022-11-21 16:45:12,661 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:45:12" (1/1) ... [2022-11-21 16:45:12,662 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:45:12" (1/1) ... [2022-11-21 16:45:12,671 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:45:12" (1/1) ... [2022-11-21 16:45:12,679 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:45:12" (1/1) ... [2022-11-21 16:45:12,680 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:45:12" (1/1) ... [2022-11-21 16:45:12,681 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:45:12" (1/1) ... [2022-11-21 16:45:12,683 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 16:45:12,683 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 16:45:12,684 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 16:45:12,684 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 16:45:12,685 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:45:12" (1/1) ... [2022-11-21 16:45:12,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:45:12,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f247005-5f96-4969-8624-5a5b861e01b0/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:45:12,717 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f247005-5f96-4969-8624-5a5b861e01b0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 16:45:12,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f247005-5f96-4969-8624-5a5b861e01b0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 16:45:12,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 16:45:12,763 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-21 16:45:12,763 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-21 16:45:12,763 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-21 16:45:12,764 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-21 16:45:12,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 16:45:12,765 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 16:45:12,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 16:45:12,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 16:45:12,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 16:45:12,766 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 16:45:12,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 16:45:12,768 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 16:45:12,908 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 16:45:12,911 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 16:45:13,083 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 16:45:13,091 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 16:45:13,092 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-21 16:45:13,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:45:13 BoogieIcfgContainer [2022-11-21 16:45:13,094 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 16:45:13,097 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 16:45:13,097 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 16:45:13,102 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 16:45:13,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 04:45:12" (1/3) ... [2022-11-21 16:45:13,103 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c74fcb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:45:13, skipping insertion in model container [2022-11-21 16:45:13,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:45:12" (2/3) ... [2022-11-21 16:45:13,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c74fcb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:45:13, skipping insertion in model container [2022-11-21 16:45:13,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:45:13" (3/3) ... [2022-11-21 16:45:13,123 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy7.wvr.c [2022-11-21 16:45:13,133 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 16:45:13,171 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 16:45:13,172 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 16:45:13,172 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 16:45:13,310 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-21 16:45:13,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 94 transitions, 204 flow [2022-11-21 16:45:13,441 INFO L130 PetriNetUnfolder]: 2/92 cut-off events. [2022-11-21 16:45:13,441 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-21 16:45:13,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 92 events. 2/92 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2022-11-21 16:45:13,446 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 94 transitions, 204 flow [2022-11-21 16:45:13,451 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 83 transitions, 178 flow [2022-11-21 16:45:13,464 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:45:13,472 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@50bc5b61, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:45:13,472 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-21 16:45:13,508 INFO L130 PetriNetUnfolder]: 2/82 cut-off events. [2022-11-21 16:45:13,508 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-21 16:45:13,509 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:45:13,510 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:45:13,510 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:45:13,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:45:13,517 INFO L85 PathProgramCache]: Analyzing trace with hash 126118782, now seen corresponding path program 1 times [2022-11-21 16:45:13,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:45:13,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271480442] [2022-11-21 16:45:13,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:45:13,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:45:13,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:45:15,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:45:15,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:45:15,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271480442] [2022-11-21 16:45:15,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271480442] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:45:15,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:45:15,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:45:15,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663773362] [2022-11-21 16:45:15,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:45:15,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:45:15,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:45:15,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:45:15,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:45:15,977 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:45:15,984 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 83 transitions, 178 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:15,984 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:45:15,984 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:45:15,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:45:17,685 INFO L130 PetriNetUnfolder]: 179/515 cut-off events. [2022-11-21 16:45:17,685 INFO L131 PetriNetUnfolder]: For 65/65 co-relation queries the response was YES. [2022-11-21 16:45:17,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 984 conditions, 515 events. 179/515 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2118 event pairs, 133 based on Foata normal form. 3/511 useless extension candidates. Maximal degree in co-relation 824. Up to 332 conditions per place. [2022-11-21 16:45:17,692 INFO L137 encePairwiseOnDemand]: 60/94 looper letters, 47 selfloop transitions, 28 changer transitions 34/148 dead transitions. [2022-11-21 16:45:17,692 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 148 transitions, 535 flow [2022-11-21 16:45:17,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-21 16:45:17,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-21 16:45:17,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1583 transitions. [2022-11-21 16:45:17,711 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5613475177304964 [2022-11-21 16:45:17,712 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1583 transitions. [2022-11-21 16:45:17,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1583 transitions. [2022-11-21 16:45:17,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:45:17,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1583 transitions. [2022-11-21 16:45:17,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 52.766666666666666) internal successors, (1583), 30 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:17,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:17,738 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:17,740 INFO L175 Difference]: Start difference. First operand has 88 places, 83 transitions, 178 flow. Second operand 30 states and 1583 transitions. [2022-11-21 16:45:17,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 148 transitions, 535 flow [2022-11-21 16:45:17,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 148 transitions, 521 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-21 16:45:17,749 INFO L231 Difference]: Finished difference. Result has 136 places, 103 transitions, 360 flow [2022-11-21 16:45:17,751 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=360, PETRI_PLACES=136, PETRI_TRANSITIONS=103} [2022-11-21 16:45:17,755 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 48 predicate places. [2022-11-21 16:45:17,755 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 103 transitions, 360 flow [2022-11-21 16:45:17,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:17,756 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:45:17,756 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:45:17,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 16:45:17,757 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:45:17,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:45:17,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1479619674, now seen corresponding path program 2 times [2022-11-21 16:45:17,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:45:17,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628365445] [2022-11-21 16:45:17,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:45:17,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:45:17,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:45:18,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:45:18,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:45:18,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628365445] [2022-11-21 16:45:18,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628365445] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:45:18,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:45:18,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-21 16:45:18,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786412385] [2022-11-21 16:45:18,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:45:18,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-21 16:45:18,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:45:18,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-21 16:45:18,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-11-21 16:45:18,871 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:45:18,872 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 103 transitions, 360 flow. Second operand has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:18,872 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:45:18,872 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:45:18,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:45:20,619 INFO L130 PetriNetUnfolder]: 202/559 cut-off events. [2022-11-21 16:45:20,619 INFO L131 PetriNetUnfolder]: For 243/243 co-relation queries the response was YES. [2022-11-21 16:45:20,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1546 conditions, 559 events. 202/559 cut-off events. For 243/243 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2507 event pairs, 22 based on Foata normal form. 1/558 useless extension candidates. Maximal degree in co-relation 1515. Up to 329 conditions per place. [2022-11-21 16:45:20,627 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 82 selfloop transitions, 42 changer transitions 36/199 dead transitions. [2022-11-21 16:45:20,627 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 199 transitions, 1049 flow [2022-11-21 16:45:20,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-21 16:45:20,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-11-21 16:45:20,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 1561 transitions. [2022-11-21 16:45:20,632 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5726338958180485 [2022-11-21 16:45:20,632 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 1561 transitions. [2022-11-21 16:45:20,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 1561 transitions. [2022-11-21 16:45:20,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:45:20,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 1561 transitions. [2022-11-21 16:45:20,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 53.827586206896555) internal successors, (1561), 29 states have internal predecessors, (1561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:20,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 94.0) internal successors, (2820), 30 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:20,643 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 94.0) internal successors, (2820), 30 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:20,644 INFO L175 Difference]: Start difference. First operand has 136 places, 103 transitions, 360 flow. Second operand 29 states and 1561 transitions. [2022-11-21 16:45:20,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 199 transitions, 1049 flow [2022-11-21 16:45:20,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 199 transitions, 955 flow, removed 38 selfloop flow, removed 13 redundant places. [2022-11-21 16:45:20,654 INFO L231 Difference]: Finished difference. Result has 156 places, 139 transitions, 637 flow [2022-11-21 16:45:20,654 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=637, PETRI_PLACES=156, PETRI_TRANSITIONS=139} [2022-11-21 16:45:20,655 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 68 predicate places. [2022-11-21 16:45:20,656 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 139 transitions, 637 flow [2022-11-21 16:45:20,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:20,656 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:45:20,657 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:45:20,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 16:45:20,657 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:45:20,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:45:20,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1215992582, now seen corresponding path program 3 times [2022-11-21 16:45:20,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:45:20,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939107762] [2022-11-21 16:45:20,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:45:20,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:45:20,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:45:21,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:45:21,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:45:21,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939107762] [2022-11-21 16:45:21,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939107762] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:45:21,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:45:21,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-21 16:45:21,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850830485] [2022-11-21 16:45:21,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:45:21,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-21 16:45:21,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:45:21,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-21 16:45:21,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-21 16:45:21,648 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:45:21,649 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 139 transitions, 637 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:21,650 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:45:21,650 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:45:21,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:45:23,853 INFO L130 PetriNetUnfolder]: 240/645 cut-off events. [2022-11-21 16:45:23,854 INFO L131 PetriNetUnfolder]: For 820/820 co-relation queries the response was YES. [2022-11-21 16:45:23,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2261 conditions, 645 events. 240/645 cut-off events. For 820/820 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3036 event pairs, 40 based on Foata normal form. 1/643 useless extension candidates. Maximal degree in co-relation 2220. Up to 401 conditions per place. [2022-11-21 16:45:23,863 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 102 selfloop transitions, 56 changer transitions 43/240 dead transitions. [2022-11-21 16:45:23,863 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 240 transitions, 1595 flow [2022-11-21 16:45:23,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-21 16:45:23,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-11-21 16:45:23,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 2062 transitions. [2022-11-21 16:45:23,871 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5624659028914348 [2022-11-21 16:45:23,871 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 2062 transitions. [2022-11-21 16:45:23,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 2062 transitions. [2022-11-21 16:45:23,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:45:23,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 2062 transitions. [2022-11-21 16:45:23,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 52.87179487179487) internal successors, (2062), 39 states have internal predecessors, (2062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:23,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 94.0) internal successors, (3760), 40 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:23,887 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 94.0) internal successors, (3760), 40 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:23,887 INFO L175 Difference]: Start difference. First operand has 156 places, 139 transitions, 637 flow. Second operand 39 states and 2062 transitions. [2022-11-21 16:45:23,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 240 transitions, 1595 flow [2022-11-21 16:45:23,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 240 transitions, 1454 flow, removed 66 selfloop flow, removed 11 redundant places. [2022-11-21 16:45:23,902 INFO L231 Difference]: Finished difference. Result has 201 places, 182 transitions, 1065 flow [2022-11-21 16:45:23,902 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=563, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=1065, PETRI_PLACES=201, PETRI_TRANSITIONS=182} [2022-11-21 16:45:23,903 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 113 predicate places. [2022-11-21 16:45:23,903 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 182 transitions, 1065 flow [2022-11-21 16:45:23,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:23,904 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:45:23,905 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:45:23,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 16:45:23,905 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:45:23,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:45:23,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1665333946, now seen corresponding path program 4 times [2022-11-21 16:45:23,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:45:23,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346647257] [2022-11-21 16:45:23,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:45:23,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:45:23,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:45:24,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:45:24,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:45:24,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346647257] [2022-11-21 16:45:24,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346647257] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:45:24,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:45:24,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:45:24,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328530301] [2022-11-21 16:45:24,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:45:24,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:45:24,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:45:24,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:45:24,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:45:24,794 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:45:24,795 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 182 transitions, 1065 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:24,795 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:45:24,796 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:45:24,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:45:26,356 INFO L130 PetriNetUnfolder]: 238/637 cut-off events. [2022-11-21 16:45:26,356 INFO L131 PetriNetUnfolder]: For 1487/1487 co-relation queries the response was YES. [2022-11-21 16:45:26,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2624 conditions, 637 events. 238/637 cut-off events. For 1487/1487 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2984 event pairs, 3 based on Foata normal form. 1/637 useless extension candidates. Maximal degree in co-relation 2564. Up to 403 conditions per place. [2022-11-21 16:45:26,365 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 111 selfloop transitions, 53 changer transitions 44/247 dead transitions. [2022-11-21 16:45:26,365 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 247 transitions, 1855 flow [2022-11-21 16:45:26,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-21 16:45:26,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-11-21 16:45:26,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 1502 transitions. [2022-11-21 16:45:26,370 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5706686930091185 [2022-11-21 16:45:26,370 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 1502 transitions. [2022-11-21 16:45:26,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 1502 transitions. [2022-11-21 16:45:26,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:45:26,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 1502 transitions. [2022-11-21 16:45:26,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 53.642857142857146) internal successors, (1502), 28 states have internal predecessors, (1502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:26,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 94.0) internal successors, (2726), 29 states have internal predecessors, (2726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:26,383 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 94.0) internal successors, (2726), 29 states have internal predecessors, (2726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:26,386 INFO L175 Difference]: Start difference. First operand has 201 places, 182 transitions, 1065 flow. Second operand 28 states and 1502 transitions. [2022-11-21 16:45:26,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 247 transitions, 1855 flow [2022-11-21 16:45:26,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 247 transitions, 1633 flow, removed 89 selfloop flow, removed 18 redundant places. [2022-11-21 16:45:26,410 INFO L231 Difference]: Finished difference. Result has 213 places, 187 transitions, 1114 flow [2022-11-21 16:45:26,410 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=907, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1114, PETRI_PLACES=213, PETRI_TRANSITIONS=187} [2022-11-21 16:45:26,412 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 125 predicate places. [2022-11-21 16:45:26,412 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 187 transitions, 1114 flow [2022-11-21 16:45:26,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:26,413 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:45:26,417 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:45:26,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 16:45:26,418 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:45:26,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:45:26,419 INFO L85 PathProgramCache]: Analyzing trace with hash 699227332, now seen corresponding path program 5 times [2022-11-21 16:45:26,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:45:26,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601264177] [2022-11-21 16:45:26,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:45:26,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:45:26,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:45:27,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:45:27,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:45:27,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601264177] [2022-11-21 16:45:27,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601264177] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:45:27,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:45:27,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:45:27,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146439165] [2022-11-21 16:45:27,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:45:27,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:45:27,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:45:27,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:45:27,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:45:27,326 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:45:27,327 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 187 transitions, 1114 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:27,327 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:45:27,327 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:45:27,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:45:29,200 INFO L130 PetriNetUnfolder]: 261/695 cut-off events. [2022-11-21 16:45:29,201 INFO L131 PetriNetUnfolder]: For 1967/1967 co-relation queries the response was YES. [2022-11-21 16:45:29,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2995 conditions, 695 events. 261/695 cut-off events. For 1967/1967 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3364 event pairs, 20 based on Foata normal form. 1/694 useless extension candidates. Maximal degree in co-relation 2932. Up to 446 conditions per place. [2022-11-21 16:45:29,211 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 131 selfloop transitions, 61 changer transitions 43/274 dead transitions. [2022-11-21 16:45:29,211 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 274 transitions, 2242 flow [2022-11-21 16:45:29,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-21 16:45:29,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-21 16:45:29,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1861 transitions. [2022-11-21 16:45:29,215 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5656534954407295 [2022-11-21 16:45:29,215 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1861 transitions. [2022-11-21 16:45:29,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1861 transitions. [2022-11-21 16:45:29,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:45:29,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1861 transitions. [2022-11-21 16:45:29,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 53.17142857142857) internal successors, (1861), 35 states have internal predecessors, (1861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:29,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:29,227 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:29,227 INFO L175 Difference]: Start difference. First operand has 213 places, 187 transitions, 1114 flow. Second operand 35 states and 1861 transitions. [2022-11-21 16:45:29,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 274 transitions, 2242 flow [2022-11-21 16:45:29,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 274 transitions, 1993 flow, removed 66 selfloop flow, removed 24 redundant places. [2022-11-21 16:45:29,247 INFO L231 Difference]: Finished difference. Result has 234 places, 215 transitions, 1438 flow [2022-11-21 16:45:29,247 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=972, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1438, PETRI_PLACES=234, PETRI_TRANSITIONS=215} [2022-11-21 16:45:29,248 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 146 predicate places. [2022-11-21 16:45:29,248 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 215 transitions, 1438 flow [2022-11-21 16:45:29,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:29,249 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:45:29,249 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:45:29,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 16:45:29,250 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:45:29,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:45:29,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1519473010, now seen corresponding path program 6 times [2022-11-21 16:45:29,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:45:29,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518619084] [2022-11-21 16:45:29,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:45:29,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:45:29,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:45:30,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:45:30,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:45:30,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518619084] [2022-11-21 16:45:30,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518619084] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:45:30,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:45:30,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:45:30,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787464188] [2022-11-21 16:45:30,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:45:30,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:45:30,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:45:30,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:45:30,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:45:30,027 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:45:30,028 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 215 transitions, 1438 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:30,029 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:45:30,029 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:45:30,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:45:31,653 INFO L130 PetriNetUnfolder]: 265/713 cut-off events. [2022-11-21 16:45:31,653 INFO L131 PetriNetUnfolder]: For 2399/2399 co-relation queries the response was YES. [2022-11-21 16:45:31,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3176 conditions, 713 events. 265/713 cut-off events. For 2399/2399 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3525 event pairs, 19 based on Foata normal form. 1/712 useless extension candidates. Maximal degree in co-relation 3104. Up to 459 conditions per place. [2022-11-21 16:45:31,663 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 126 selfloop transitions, 74 changer transitions 43/282 dead transitions. [2022-11-21 16:45:31,663 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 282 transitions, 2337 flow [2022-11-21 16:45:31,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-21 16:45:31,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-21 16:45:31,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1657 transitions. [2022-11-21 16:45:31,670 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5686341798215512 [2022-11-21 16:45:31,670 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1657 transitions. [2022-11-21 16:45:31,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1657 transitions. [2022-11-21 16:45:31,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:45:31,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1657 transitions. [2022-11-21 16:45:31,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 53.45161290322581) internal successors, (1657), 31 states have internal predecessors, (1657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:31,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:31,682 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:31,682 INFO L175 Difference]: Start difference. First operand has 234 places, 215 transitions, 1438 flow. Second operand 31 states and 1657 transitions. [2022-11-21 16:45:31,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 282 transitions, 2337 flow [2022-11-21 16:45:31,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 282 transitions, 2057 flow, removed 109 selfloop flow, removed 23 redundant places. [2022-11-21 16:45:31,710 INFO L231 Difference]: Finished difference. Result has 245 places, 224 transitions, 1536 flow [2022-11-21 16:45:31,710 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1238, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1536, PETRI_PLACES=245, PETRI_TRANSITIONS=224} [2022-11-21 16:45:31,715 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 157 predicate places. [2022-11-21 16:45:31,715 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 224 transitions, 1536 flow [2022-11-21 16:45:31,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:31,716 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:45:31,716 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:45:31,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 16:45:31,716 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:45:31,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:45:31,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1541157144, now seen corresponding path program 7 times [2022-11-21 16:45:31,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:45:31,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247031783] [2022-11-21 16:45:31,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:45:31,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:45:31,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:45:32,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:45:32,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:45:32,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247031783] [2022-11-21 16:45:32,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247031783] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:45:32,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:45:32,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:45:32,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162642841] [2022-11-21 16:45:32,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:45:32,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:45:32,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:45:32,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:45:32,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:45:32,502 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:45:32,504 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 224 transitions, 1536 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:32,504 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:45:32,504 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:45:32,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:45:34,328 INFO L130 PetriNetUnfolder]: 264/746 cut-off events. [2022-11-21 16:45:34,328 INFO L131 PetriNetUnfolder]: For 2496/2496 co-relation queries the response was YES. [2022-11-21 16:45:34,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3276 conditions, 746 events. 264/746 cut-off events. For 2496/2496 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3738 event pairs, 27 based on Foata normal form. 1/745 useless extension candidates. Maximal degree in co-relation 3202. Up to 448 conditions per place. [2022-11-21 16:45:34,340 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 124 selfloop transitions, 76 changer transitions 44/283 dead transitions. [2022-11-21 16:45:34,341 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 283 transitions, 2405 flow [2022-11-21 16:45:34,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-21 16:45:34,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-21 16:45:34,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1658 transitions. [2022-11-21 16:45:34,347 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5689773507206589 [2022-11-21 16:45:34,347 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1658 transitions. [2022-11-21 16:45:34,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1658 transitions. [2022-11-21 16:45:34,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:45:34,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1658 transitions. [2022-11-21 16:45:34,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 53.483870967741936) internal successors, (1658), 31 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:34,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:34,357 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:34,358 INFO L175 Difference]: Start difference. First operand has 245 places, 224 transitions, 1536 flow. Second operand 31 states and 1658 transitions. [2022-11-21 16:45:34,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 283 transitions, 2405 flow [2022-11-21 16:45:34,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 283 transitions, 2194 flow, removed 48 selfloop flow, removed 26 redundant places. [2022-11-21 16:45:34,391 INFO L231 Difference]: Finished difference. Result has 255 places, 224 transitions, 1617 flow [2022-11-21 16:45:34,391 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1378, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1617, PETRI_PLACES=255, PETRI_TRANSITIONS=224} [2022-11-21 16:45:34,392 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 167 predicate places. [2022-11-21 16:45:34,392 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 224 transitions, 1617 flow [2022-11-21 16:45:34,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:34,392 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:45:34,393 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:45:34,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 16:45:34,393 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:45:34,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:45:34,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1783083334, now seen corresponding path program 8 times [2022-11-21 16:45:34,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:45:34,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633892221] [2022-11-21 16:45:34,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:45:34,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:45:34,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:45:35,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:45:35,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:45:35,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633892221] [2022-11-21 16:45:35,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633892221] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:45:35,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:45:35,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:45:35,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132516435] [2022-11-21 16:45:35,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:45:35,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:45:35,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:45:35,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:45:35,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:45:35,246 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:45:35,247 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 224 transitions, 1617 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:35,248 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:45:35,248 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:45:35,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:45:37,038 INFO L130 PetriNetUnfolder]: 260/735 cut-off events. [2022-11-21 16:45:37,040 INFO L131 PetriNetUnfolder]: For 2603/2603 co-relation queries the response was YES. [2022-11-21 16:45:37,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3340 conditions, 735 events. 260/735 cut-off events. For 2603/2603 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3669 event pairs, 33 based on Foata normal form. 1/734 useless extension candidates. Maximal degree in co-relation 3261. Up to 456 conditions per place. [2022-11-21 16:45:37,056 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 126 selfloop transitions, 73 changer transitions 39/277 dead transitions. [2022-11-21 16:45:37,056 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 277 transitions, 2429 flow [2022-11-21 16:45:37,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-21 16:45:37,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-21 16:45:37,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1603 transitions. [2022-11-21 16:45:37,070 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5684397163120567 [2022-11-21 16:45:37,070 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1603 transitions. [2022-11-21 16:45:37,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1603 transitions. [2022-11-21 16:45:37,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:45:37,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1603 transitions. [2022-11-21 16:45:37,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 53.43333333333333) internal successors, (1603), 30 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:37,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:37,095 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:37,095 INFO L175 Difference]: Start difference. First operand has 255 places, 224 transitions, 1617 flow. Second operand 30 states and 1603 transitions. [2022-11-21 16:45:37,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 277 transitions, 2429 flow [2022-11-21 16:45:37,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 277 transitions, 2192 flow, removed 35 selfloop flow, removed 29 redundant places. [2022-11-21 16:45:37,132 INFO L231 Difference]: Finished difference. Result has 256 places, 223 transitions, 1629 flow [2022-11-21 16:45:37,133 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1412, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1629, PETRI_PLACES=256, PETRI_TRANSITIONS=223} [2022-11-21 16:45:37,136 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 168 predicate places. [2022-11-21 16:45:37,137 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 223 transitions, 1629 flow [2022-11-21 16:45:37,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:37,137 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:45:37,137 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:45:37,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 16:45:37,138 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:45:37,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:45:37,139 INFO L85 PathProgramCache]: Analyzing trace with hash -798716138, now seen corresponding path program 9 times [2022-11-21 16:45:37,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:45:37,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315504567] [2022-11-21 16:45:37,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:45:37,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:45:37,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:45:38,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:45:38,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:45:38,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315504567] [2022-11-21 16:45:38,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315504567] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:45:38,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:45:38,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-21 16:45:38,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055909425] [2022-11-21 16:45:38,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:45:38,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-21 16:45:38,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:45:38,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-21 16:45:38,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-11-21 16:45:38,023 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:45:38,024 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 223 transitions, 1629 flow. Second operand has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:38,025 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:45:38,025 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:45:38,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:45:40,363 INFO L130 PetriNetUnfolder]: 261/743 cut-off events. [2022-11-21 16:45:40,363 INFO L131 PetriNetUnfolder]: For 2956/2956 co-relation queries the response was YES. [2022-11-21 16:45:40,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3420 conditions, 743 events. 261/743 cut-off events. For 2956/2956 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3705 event pairs, 25 based on Foata normal form. 1/743 useless extension candidates. Maximal degree in co-relation 3343. Up to 460 conditions per place. [2022-11-21 16:45:40,378 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 129 selfloop transitions, 94 changer transitions 29/291 dead transitions. [2022-11-21 16:45:40,378 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 291 transitions, 2637 flow [2022-11-21 16:45:40,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-21 16:45:40,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2022-11-21 16:45:40,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 2205 transitions. [2022-11-21 16:45:40,435 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5585106382978723 [2022-11-21 16:45:40,435 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 2205 transitions. [2022-11-21 16:45:40,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 2205 transitions. [2022-11-21 16:45:40,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:45:40,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 2205 transitions. [2022-11-21 16:45:40,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 52.5) internal successors, (2205), 42 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:40,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 94.0) internal successors, (4042), 43 states have internal predecessors, (4042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:40,474 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 94.0) internal successors, (4042), 43 states have internal predecessors, (4042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:40,474 INFO L175 Difference]: Start difference. First operand has 256 places, 223 transitions, 1629 flow. Second operand 42 states and 2205 transitions. [2022-11-21 16:45:40,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 291 transitions, 2637 flow [2022-11-21 16:45:40,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 291 transitions, 2381 flow, removed 68 selfloop flow, removed 28 redundant places. [2022-11-21 16:45:40,509 INFO L231 Difference]: Finished difference. Result has 273 places, 244 transitions, 1891 flow [2022-11-21 16:45:40,509 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1468, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=1891, PETRI_PLACES=273, PETRI_TRANSITIONS=244} [2022-11-21 16:45:40,511 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 185 predicate places. [2022-11-21 16:45:40,511 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 244 transitions, 1891 flow [2022-11-21 16:45:40,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:40,512 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:45:40,512 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:45:40,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 16:45:40,513 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:45:40,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:45:40,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1392706964, now seen corresponding path program 10 times [2022-11-21 16:45:40,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:45:40,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664849625] [2022-11-21 16:45:40,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:45:40,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:45:40,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:45:41,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:45:41,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:45:41,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664849625] [2022-11-21 16:45:41,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664849625] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:45:41,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:45:41,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:45:41,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245044058] [2022-11-21 16:45:41,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:45:41,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:45:41,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:45:41,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:45:41,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:45:41,361 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:45:41,362 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 244 transitions, 1891 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:41,362 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:45:41,362 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:45:41,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:45:43,023 INFO L130 PetriNetUnfolder]: 261/745 cut-off events. [2022-11-21 16:45:43,024 INFO L131 PetriNetUnfolder]: For 3283/3283 co-relation queries the response was YES. [2022-11-21 16:45:43,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3603 conditions, 745 events. 261/745 cut-off events. For 3283/3283 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 3789 event pairs, 24 based on Foata normal form. 1/744 useless extension candidates. Maximal degree in co-relation 3521. Up to 477 conditions per place. [2022-11-21 16:45:43,037 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 138 selfloop transitions, 78 changer transitions 32/287 dead transitions. [2022-11-21 16:45:43,037 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 287 transitions, 2626 flow [2022-11-21 16:45:43,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-21 16:45:43,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-21 16:45:43,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1745 transitions. [2022-11-21 16:45:43,042 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5625402965828498 [2022-11-21 16:45:43,042 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1745 transitions. [2022-11-21 16:45:43,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1745 transitions. [2022-11-21 16:45:43,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:45:43,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1745 transitions. [2022-11-21 16:45:43,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 52.878787878787875) internal successors, (1745), 33 states have internal predecessors, (1745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:43,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:43,053 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:43,054 INFO L175 Difference]: Start difference. First operand has 273 places, 244 transitions, 1891 flow. Second operand 33 states and 1745 transitions. [2022-11-21 16:45:43,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 287 transitions, 2626 flow [2022-11-21 16:45:43,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 287 transitions, 2308 flow, removed 96 selfloop flow, removed 27 redundant places. [2022-11-21 16:45:43,091 INFO L231 Difference]: Finished difference. Result has 280 places, 241 transitions, 1804 flow [2022-11-21 16:45:43,092 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1623, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=1804, PETRI_PLACES=280, PETRI_TRANSITIONS=241} [2022-11-21 16:45:43,092 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 192 predicate places. [2022-11-21 16:45:43,093 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 241 transitions, 1804 flow [2022-11-21 16:45:43,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:43,093 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:45:43,094 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:45:43,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 16:45:43,094 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:45:43,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:45:43,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1406267310, now seen corresponding path program 11 times [2022-11-21 16:45:43,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:45:43,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453560899] [2022-11-21 16:45:43,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:45:43,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:45:43,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:45:43,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:45:43,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:45:43,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453560899] [2022-11-21 16:45:43,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453560899] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:45:43,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:45:43,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:45:43,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902816176] [2022-11-21 16:45:43,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:45:43,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:45:43,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:45:43,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:45:43,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:45:43,850 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:45:43,851 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 241 transitions, 1804 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:43,851 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:45:43,851 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:45:43,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:45:45,464 INFO L130 PetriNetUnfolder]: 251/705 cut-off events. [2022-11-21 16:45:45,464 INFO L131 PetriNetUnfolder]: For 2893/2893 co-relation queries the response was YES. [2022-11-21 16:45:45,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3435 conditions, 705 events. 251/705 cut-off events. For 2893/2893 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3435 event pairs, 22 based on Foata normal form. 1/705 useless extension candidates. Maximal degree in co-relation 3351. Up to 465 conditions per place. [2022-11-21 16:45:45,476 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 134 selfloop transitions, 75 changer transitions 26/274 dead transitions. [2022-11-21 16:45:45,476 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 274 transitions, 2427 flow [2022-11-21 16:45:45,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-21 16:45:45,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-21 16:45:45,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1639 transitions. [2022-11-21 16:45:45,483 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5624571036376115 [2022-11-21 16:45:45,483 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1639 transitions. [2022-11-21 16:45:45,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1639 transitions. [2022-11-21 16:45:45,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:45:45,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1639 transitions. [2022-11-21 16:45:45,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 52.87096774193548) internal successors, (1639), 31 states have internal predecessors, (1639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:45,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:45,494 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:45,494 INFO L175 Difference]: Start difference. First operand has 280 places, 241 transitions, 1804 flow. Second operand 31 states and 1639 transitions. [2022-11-21 16:45:45,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 274 transitions, 2427 flow [2022-11-21 16:45:45,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 274 transitions, 2189 flow, removed 25 selfloop flow, removed 33 redundant places. [2022-11-21 16:45:45,557 INFO L231 Difference]: Finished difference. Result has 274 places, 234 transitions, 1729 flow [2022-11-21 16:45:45,557 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1582, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1729, PETRI_PLACES=274, PETRI_TRANSITIONS=234} [2022-11-21 16:45:45,558 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 186 predicate places. [2022-11-21 16:45:45,558 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 234 transitions, 1729 flow [2022-11-21 16:45:45,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:45,559 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:45:45,559 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:45:45,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-21 16:45:45,560 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:45:45,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:45:45,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1692710944, now seen corresponding path program 12 times [2022-11-21 16:45:45,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:45:45,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738700563] [2022-11-21 16:45:45,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:45:45,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:45:45,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:45:46,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:45:46,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:45:46,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738700563] [2022-11-21 16:45:46,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738700563] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:45:46,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:45:46,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-21 16:45:46,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175488108] [2022-11-21 16:45:46,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:45:46,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-21 16:45:46,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:45:46,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-21 16:45:46,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-21 16:45:46,281 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:45:46,283 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 234 transitions, 1729 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:46,283 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:45:46,283 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:45:46,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:45:48,082 INFO L130 PetriNetUnfolder]: 244/700 cut-off events. [2022-11-21 16:45:48,083 INFO L131 PetriNetUnfolder]: For 2595/2595 co-relation queries the response was YES. [2022-11-21 16:45:48,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3293 conditions, 700 events. 244/700 cut-off events. For 2595/2595 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3348 event pairs, 32 based on Foata normal form. 1/700 useless extension candidates. Maximal degree in co-relation 3212. Up to 460 conditions per place. [2022-11-21 16:45:48,094 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 130 selfloop transitions, 75 changer transitions 19/263 dead transitions. [2022-11-21 16:45:48,094 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 263 transitions, 2301 flow [2022-11-21 16:45:48,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-21 16:45:48,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-21 16:45:48,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1633 transitions. [2022-11-21 16:45:48,098 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.560398078242965 [2022-11-21 16:45:48,099 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1633 transitions. [2022-11-21 16:45:48,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1633 transitions. [2022-11-21 16:45:48,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:45:48,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1633 transitions. [2022-11-21 16:45:48,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 52.67741935483871) internal successors, (1633), 31 states have internal predecessors, (1633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:48,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:48,109 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:48,109 INFO L175 Difference]: Start difference. First operand has 274 places, 234 transitions, 1729 flow. Second operand 31 states and 1633 transitions. [2022-11-21 16:45:48,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 263 transitions, 2301 flow [2022-11-21 16:45:48,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 263 transitions, 2097 flow, removed 17 selfloop flow, removed 33 redundant places. [2022-11-21 16:45:48,142 INFO L231 Difference]: Finished difference. Result has 267 places, 231 transitions, 1700 flow [2022-11-21 16:45:48,143 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1537, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1700, PETRI_PLACES=267, PETRI_TRANSITIONS=231} [2022-11-21 16:45:48,143 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 179 predicate places. [2022-11-21 16:45:48,144 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 231 transitions, 1700 flow [2022-11-21 16:45:48,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:48,144 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:45:48,145 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:45:48,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-21 16:45:48,145 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:45:48,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:45:48,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1360263200, now seen corresponding path program 13 times [2022-11-21 16:45:48,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:45:48,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078437891] [2022-11-21 16:45:48,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:45:48,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:45:48,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:45:48,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:45:48,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:45:48,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078437891] [2022-11-21 16:45:48,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078437891] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:45:48,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:45:48,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-21 16:45:48,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568507126] [2022-11-21 16:45:48,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:45:48,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-21 16:45:48,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:45:48,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-21 16:45:48,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-11-21 16:45:48,934 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:45:48,935 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 231 transitions, 1700 flow. Second operand has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:48,935 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:45:48,935 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:45:48,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:45:50,597 INFO L130 PetriNetUnfolder]: 238/686 cut-off events. [2022-11-21 16:45:50,597 INFO L131 PetriNetUnfolder]: For 2359/2359 co-relation queries the response was YES. [2022-11-21 16:45:50,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3181 conditions, 686 events. 238/686 cut-off events. For 2359/2359 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3219 event pairs, 35 based on Foata normal form. 1/685 useless extension candidates. Maximal degree in co-relation 3104. Up to 452 conditions per place. [2022-11-21 16:45:50,606 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 123 selfloop transitions, 65 changer transitions 26/253 dead transitions. [2022-11-21 16:45:50,606 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 253 transitions, 2225 flow [2022-11-21 16:45:50,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-21 16:45:50,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-21 16:45:50,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1677 transitions. [2022-11-21 16:45:50,610 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5575132978723404 [2022-11-21 16:45:50,610 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1677 transitions. [2022-11-21 16:45:50,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1677 transitions. [2022-11-21 16:45:50,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:45:50,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1677 transitions. [2022-11-21 16:45:50,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 52.40625) internal successors, (1677), 32 states have internal predecessors, (1677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:50,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:50,619 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:50,619 INFO L175 Difference]: Start difference. First operand has 267 places, 231 transitions, 1700 flow. Second operand 32 states and 1677 transitions. [2022-11-21 16:45:50,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 253 transitions, 2225 flow [2022-11-21 16:45:50,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 253 transitions, 2037 flow, removed 9 selfloop flow, removed 31 redundant places. [2022-11-21 16:45:50,647 INFO L231 Difference]: Finished difference. Result has 264 places, 215 transitions, 1558 flow [2022-11-21 16:45:50,648 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1516, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1558, PETRI_PLACES=264, PETRI_TRANSITIONS=215} [2022-11-21 16:45:50,648 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 176 predicate places. [2022-11-21 16:45:50,648 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 215 transitions, 1558 flow [2022-11-21 16:45:50,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:50,649 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:45:50,649 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:45:50,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-21 16:45:50,650 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:45:50,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:45:50,650 INFO L85 PathProgramCache]: Analyzing trace with hash 6627344, now seen corresponding path program 14 times [2022-11-21 16:45:50,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:45:50,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258433479] [2022-11-21 16:45:50,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:45:50,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:45:50,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:45:51,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:45:51,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:45:51,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258433479] [2022-11-21 16:45:51,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258433479] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:45:51,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:45:51,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:45:51,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027738401] [2022-11-21 16:45:51,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:45:51,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:45:51,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:45:51,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:45:51,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:45:51,364 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:45:51,365 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 215 transitions, 1558 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:51,365 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:45:51,365 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:45:51,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:45:53,171 INFO L130 PetriNetUnfolder]: 260/745 cut-off events. [2022-11-21 16:45:53,171 INFO L131 PetriNetUnfolder]: For 2571/2571 co-relation queries the response was YES. [2022-11-21 16:45:53,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3362 conditions, 745 events. 260/745 cut-off events. For 2571/2571 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3750 event pairs, 38 based on Foata normal form. 1/743 useless extension candidates. Maximal degree in co-relation 3287. Up to 436 conditions per place. [2022-11-21 16:45:53,180 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 120 selfloop transitions, 83 changer transitions 42/284 dead transitions. [2022-11-21 16:45:53,181 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 284 transitions, 2512 flow [2022-11-21 16:45:53,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-21 16:45:53,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-21 16:45:53,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1861 transitions. [2022-11-21 16:45:53,185 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5656534954407295 [2022-11-21 16:45:53,186 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1861 transitions. [2022-11-21 16:45:53,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1861 transitions. [2022-11-21 16:45:53,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:45:53,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1861 transitions. [2022-11-21 16:45:53,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 53.17142857142857) internal successors, (1861), 35 states have internal predecessors, (1861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:53,194 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:53,195 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:53,195 INFO L175 Difference]: Start difference. First operand has 264 places, 215 transitions, 1558 flow. Second operand 35 states and 1861 transitions. [2022-11-21 16:45:53,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 284 transitions, 2512 flow [2022-11-21 16:45:53,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 284 transitions, 2221 flow, removed 45 selfloop flow, removed 29 redundant places. [2022-11-21 16:45:53,224 INFO L231 Difference]: Finished difference. Result has 256 places, 224 transitions, 1654 flow [2022-11-21 16:45:53,224 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1329, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1654, PETRI_PLACES=256, PETRI_TRANSITIONS=224} [2022-11-21 16:45:53,225 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 168 predicate places. [2022-11-21 16:45:53,225 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 224 transitions, 1654 flow [2022-11-21 16:45:53,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:53,226 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:45:53,226 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:45:53,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-21 16:45:53,227 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:45:53,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:45:53,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1409575526, now seen corresponding path program 15 times [2022-11-21 16:45:53,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:45:53,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769006130] [2022-11-21 16:45:53,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:45:53,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:45:53,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:45:54,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:45:54,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:45:54,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769006130] [2022-11-21 16:45:54,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769006130] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:45:54,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:45:54,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:45:54,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421420908] [2022-11-21 16:45:54,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:45:54,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:45:54,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:45:54,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:45:54,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:45:54,013 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:45:54,015 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 224 transitions, 1654 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:54,015 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:45:54,016 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:45:54,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:45:55,668 INFO L130 PetriNetUnfolder]: 272/762 cut-off events. [2022-11-21 16:45:55,668 INFO L131 PetriNetUnfolder]: For 3720/3720 co-relation queries the response was YES. [2022-11-21 16:45:55,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3673 conditions, 762 events. 272/762 cut-off events. For 3720/3720 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3706 event pairs, 24 based on Foata normal form. 1/760 useless extension candidates. Maximal degree in co-relation 3596. Up to 458 conditions per place. [2022-11-21 16:45:55,680 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 138 selfloop transitions, 101 changer transitions 22/300 dead transitions. [2022-11-21 16:45:55,680 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 300 transitions, 2850 flow [2022-11-21 16:45:55,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-21 16:45:55,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-21 16:45:55,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1818 transitions. [2022-11-21 16:45:55,684 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5688360450563203 [2022-11-21 16:45:55,684 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1818 transitions. [2022-11-21 16:45:55,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1818 transitions. [2022-11-21 16:45:55,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:45:55,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1818 transitions. [2022-11-21 16:45:55,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.470588235294116) internal successors, (1818), 34 states have internal predecessors, (1818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:55,692 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:55,694 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:55,694 INFO L175 Difference]: Start difference. First operand has 256 places, 224 transitions, 1654 flow. Second operand 34 states and 1818 transitions. [2022-11-21 16:45:55,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 300 transitions, 2850 flow [2022-11-21 16:45:55,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 300 transitions, 2572 flow, removed 73 selfloop flow, removed 29 redundant places. [2022-11-21 16:45:55,725 INFO L231 Difference]: Finished difference. Result has 260 places, 251 transitions, 2016 flow [2022-11-21 16:45:55,726 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1455, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=2016, PETRI_PLACES=260, PETRI_TRANSITIONS=251} [2022-11-21 16:45:55,728 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 172 predicate places. [2022-11-21 16:45:55,728 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 251 transitions, 2016 flow [2022-11-21 16:45:55,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:55,728 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:45:55,729 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:45:55,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-21 16:45:55,729 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:45:55,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:45:55,730 INFO L85 PathProgramCache]: Analyzing trace with hash 2084111022, now seen corresponding path program 16 times [2022-11-21 16:45:55,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:45:55,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251913967] [2022-11-21 16:45:55,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:45:55,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:45:55,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:45:56,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:45:56,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:45:56,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251913967] [2022-11-21 16:45:56,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251913967] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:45:56,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:45:56,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-21 16:45:56,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965589904] [2022-11-21 16:45:56,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:45:56,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-21 16:45:56,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:45:56,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-21 16:45:56,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-11-21 16:45:56,403 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:45:56,404 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 251 transitions, 2016 flow. Second operand has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:56,404 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:45:56,404 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:45:56,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:45:57,758 INFO L130 PetriNetUnfolder]: 280/785 cut-off events. [2022-11-21 16:45:57,758 INFO L131 PetriNetUnfolder]: For 3938/3938 co-relation queries the response was YES. [2022-11-21 16:45:57,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3914 conditions, 785 events. 280/785 cut-off events. For 3938/3938 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3919 event pairs, 25 based on Foata normal form. 1/783 useless extension candidates. Maximal degree in co-relation 3839. Up to 487 conditions per place. [2022-11-21 16:45:57,766 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 151 selfloop transitions, 89 changer transitions 29/308 dead transitions. [2022-11-21 16:45:57,766 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 308 transitions, 3040 flow [2022-11-21 16:45:57,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-21 16:45:57,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-11-21 16:45:57,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 1560 transitions. [2022-11-21 16:45:57,768 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5722670579603815 [2022-11-21 16:45:57,769 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 1560 transitions. [2022-11-21 16:45:57,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 1560 transitions. [2022-11-21 16:45:57,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:45:57,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 1560 transitions. [2022-11-21 16:45:57,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 53.793103448275865) internal successors, (1560), 29 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:57,776 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 94.0) internal successors, (2820), 30 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:57,777 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 94.0) internal successors, (2820), 30 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:57,777 INFO L175 Difference]: Start difference. First operand has 260 places, 251 transitions, 2016 flow. Second operand 29 states and 1560 transitions. [2022-11-21 16:45:57,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 308 transitions, 3040 flow [2022-11-21 16:45:57,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 308 transitions, 2719 flow, removed 122 selfloop flow, removed 14 redundant places. [2022-11-21 16:45:57,818 INFO L231 Difference]: Finished difference. Result has 278 places, 259 transitions, 2077 flow [2022-11-21 16:45:57,819 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1743, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=2077, PETRI_PLACES=278, PETRI_TRANSITIONS=259} [2022-11-21 16:45:57,819 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 190 predicate places. [2022-11-21 16:45:57,819 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 259 transitions, 2077 flow [2022-11-21 16:45:57,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:57,820 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:45:57,820 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:45:57,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-21 16:45:57,821 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:45:57,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:45:57,821 INFO L85 PathProgramCache]: Analyzing trace with hash -2051877010, now seen corresponding path program 17 times [2022-11-21 16:45:57,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:45:57,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574747498] [2022-11-21 16:45:57,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:45:57,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:45:57,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:45:58,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:45:58,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:45:58,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574747498] [2022-11-21 16:45:58,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574747498] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:45:58,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:45:58,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:45:58,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157794810] [2022-11-21 16:45:58,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:45:58,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:45:58,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:45:58,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:45:58,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:45:58,478 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:45:58,479 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 259 transitions, 2077 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:58,480 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:45:58,480 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:45:58,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:45:59,913 INFO L130 PetriNetUnfolder]: 278/784 cut-off events. [2022-11-21 16:45:59,913 INFO L131 PetriNetUnfolder]: For 4212/4212 co-relation queries the response was YES. [2022-11-21 16:45:59,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3998 conditions, 784 events. 278/784 cut-off events. For 4212/4212 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3944 event pairs, 25 based on Foata normal form. 1/782 useless extension candidates. Maximal degree in co-relation 3914. Up to 483 conditions per place. [2022-11-21 16:45:59,933 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 149 selfloop transitions, 85 changer transitions 35/308 dead transitions. [2022-11-21 16:45:59,934 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 308 transitions, 3007 flow [2022-11-21 16:45:59,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-21 16:45:59,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-21 16:45:59,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1658 transitions. [2022-11-21 16:45:59,937 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5689773507206589 [2022-11-21 16:45:59,937 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1658 transitions. [2022-11-21 16:45:59,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1658 transitions. [2022-11-21 16:45:59,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:45:59,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1658 transitions. [2022-11-21 16:45:59,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 53.483870967741936) internal successors, (1658), 31 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:59,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:59,950 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:59,950 INFO L175 Difference]: Start difference. First operand has 278 places, 259 transitions, 2077 flow. Second operand 31 states and 1658 transitions. [2022-11-21 16:45:59,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 308 transitions, 3007 flow [2022-11-21 16:45:59,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 308 transitions, 2721 flow, removed 64 selfloop flow, removed 27 redundant places. [2022-11-21 16:45:59,990 INFO L231 Difference]: Finished difference. Result has 286 places, 256 transitions, 2053 flow [2022-11-21 16:45:59,990 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1831, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=2053, PETRI_PLACES=286, PETRI_TRANSITIONS=256} [2022-11-21 16:45:59,991 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 198 predicate places. [2022-11-21 16:45:59,991 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 256 transitions, 2053 flow [2022-11-21 16:45:59,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:59,991 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:45:59,992 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:45:59,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-21 16:45:59,992 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:45:59,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:45:59,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1422442310, now seen corresponding path program 18 times [2022-11-21 16:45:59,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:45:59,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041983617] [2022-11-21 16:45:59,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:45:59,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:46:00,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:00,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:46:00,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:46:00,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041983617] [2022-11-21 16:46:00,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041983617] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:46:00,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:46:00,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:46:00,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920920060] [2022-11-21 16:46:00,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:46:00,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:46:00,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:46:00,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:46:00,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:46:00,693 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:46:00,694 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 256 transitions, 2053 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:00,694 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:46:00,694 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:46:00,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:46:02,497 INFO L130 PetriNetUnfolder]: 274/768 cut-off events. [2022-11-21 16:46:02,497 INFO L131 PetriNetUnfolder]: For 3948/3948 co-relation queries the response was YES. [2022-11-21 16:46:02,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3953 conditions, 768 events. 274/768 cut-off events. For 3948/3948 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3810 event pairs, 24 based on Foata normal form. 1/766 useless extension candidates. Maximal degree in co-relation 3868. Up to 481 conditions per place. [2022-11-21 16:46:02,510 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 147 selfloop transitions, 92 changer transitions 26/304 dead transitions. [2022-11-21 16:46:02,510 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 304 transitions, 2973 flow [2022-11-21 16:46:02,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-21 16:46:02,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-21 16:46:02,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1606 transitions. [2022-11-21 16:46:02,513 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5695035460992908 [2022-11-21 16:46:02,513 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1606 transitions. [2022-11-21 16:46:02,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1606 transitions. [2022-11-21 16:46:02,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:46:02,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1606 transitions. [2022-11-21 16:46:02,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 53.53333333333333) internal successors, (1606), 30 states have internal predecessors, (1606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:02,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:02,521 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:02,521 INFO L175 Difference]: Start difference. First operand has 286 places, 256 transitions, 2053 flow. Second operand 30 states and 1606 transitions. [2022-11-21 16:46:02,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 304 transitions, 2973 flow [2022-11-21 16:46:02,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 304 transitions, 2719 flow, removed 24 selfloop flow, removed 28 redundant places. [2022-11-21 16:46:02,559 INFO L231 Difference]: Finished difference. Result has 286 places, 259 transitions, 2104 flow [2022-11-21 16:46:02,560 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1826, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=2104, PETRI_PLACES=286, PETRI_TRANSITIONS=259} [2022-11-21 16:46:02,560 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 198 predicate places. [2022-11-21 16:46:02,560 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 259 transitions, 2104 flow [2022-11-21 16:46:02,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:02,561 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:46:02,561 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:46:02,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-21 16:46:02,562 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:46:02,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:46:02,562 INFO L85 PathProgramCache]: Analyzing trace with hash 2093389318, now seen corresponding path program 19 times [2022-11-21 16:46:02,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:46:02,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604569222] [2022-11-21 16:46:02,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:46:02,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:46:02,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:03,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:46:03,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:46:03,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604569222] [2022-11-21 16:46:03,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604569222] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:46:03,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:46:03,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:46:03,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889550892] [2022-11-21 16:46:03,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:46:03,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:46:03,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:46:03,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:46:03,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:46:03,175 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:46:03,176 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 259 transitions, 2104 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:03,176 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:46:03,176 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:46:03,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:46:04,550 INFO L130 PetriNetUnfolder]: 280/787 cut-off events. [2022-11-21 16:46:04,550 INFO L131 PetriNetUnfolder]: For 4356/4356 co-relation queries the response was YES. [2022-11-21 16:46:04,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4093 conditions, 787 events. 280/787 cut-off events. For 4356/4356 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 3991 event pairs, 26 based on Foata normal form. 1/784 useless extension candidates. Maximal degree in co-relation 4008. Up to 511 conditions per place. [2022-11-21 16:46:04,559 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 165 selfloop transitions, 78 changer transitions 30/312 dead transitions. [2022-11-21 16:46:04,560 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 312 transitions, 3125 flow [2022-11-21 16:46:04,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-21 16:46:04,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-21 16:46:04,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1651 transitions. [2022-11-21 16:46:04,563 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5665751544269046 [2022-11-21 16:46:04,563 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1651 transitions. [2022-11-21 16:46:04,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1651 transitions. [2022-11-21 16:46:04,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:46:04,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1651 transitions. [2022-11-21 16:46:04,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 53.25806451612903) internal successors, (1651), 31 states have internal predecessors, (1651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:04,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:04,570 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:04,571 INFO L175 Difference]: Start difference. First operand has 286 places, 259 transitions, 2104 flow. Second operand 31 states and 1651 transitions. [2022-11-21 16:46:04,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 312 transitions, 3125 flow [2022-11-21 16:46:04,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 312 transitions, 2890 flow, removed 47 selfloop flow, removed 26 redundant places. [2022-11-21 16:46:04,608 INFO L231 Difference]: Finished difference. Result has 297 places, 266 transitions, 2244 flow [2022-11-21 16:46:04,608 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1925, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=2244, PETRI_PLACES=297, PETRI_TRANSITIONS=266} [2022-11-21 16:46:04,609 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 209 predicate places. [2022-11-21 16:46:04,609 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 266 transitions, 2244 flow [2022-11-21 16:46:04,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:04,610 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:46:04,610 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:46:04,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-21 16:46:04,611 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:46:04,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:46:04,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1511959520, now seen corresponding path program 20 times [2022-11-21 16:46:04,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:46:04,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369038103] [2022-11-21 16:46:04,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:46:04,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:46:04,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:05,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:46:05,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:46:05,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369038103] [2022-11-21 16:46:05,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369038103] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:46:05,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:46:05,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:46:05,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995687204] [2022-11-21 16:46:05,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:46:05,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:46:05,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:46:05,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:46:05,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:46:05,380 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:46:05,381 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 266 transitions, 2244 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:05,381 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:46:05,381 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:46:05,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:46:06,958 INFO L130 PetriNetUnfolder]: 278/791 cut-off events. [2022-11-21 16:46:06,959 INFO L131 PetriNetUnfolder]: For 4502/4502 co-relation queries the response was YES. [2022-11-21 16:46:06,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4160 conditions, 791 events. 278/791 cut-off events. For 4502/4502 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 4037 event pairs, 23 based on Foata normal form. 1/789 useless extension candidates. Maximal degree in co-relation 4069. Up to 503 conditions per place. [2022-11-21 16:46:06,969 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 155 selfloop transitions, 86 changer transitions 30/310 dead transitions. [2022-11-21 16:46:06,970 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 310 transitions, 3174 flow [2022-11-21 16:46:06,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-21 16:46:06,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-21 16:46:06,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1701 transitions. [2022-11-21 16:46:06,973 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5654920212765957 [2022-11-21 16:46:06,973 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1701 transitions. [2022-11-21 16:46:06,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1701 transitions. [2022-11-21 16:46:06,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:46:06,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1701 transitions. [2022-11-21 16:46:06,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 53.15625) internal successors, (1701), 32 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:06,979 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:06,980 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:06,980 INFO L175 Difference]: Start difference. First operand has 297 places, 266 transitions, 2244 flow. Second operand 32 states and 1701 transitions. [2022-11-21 16:46:06,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 310 transitions, 3174 flow [2022-11-21 16:46:07,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 310 transitions, 2977 flow, removed 39 selfloop flow, removed 26 redundant places. [2022-11-21 16:46:07,019 INFO L231 Difference]: Finished difference. Result has 304 places, 264 transitions, 2304 flow [2022-11-21 16:46:07,019 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2077, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=2304, PETRI_PLACES=304, PETRI_TRANSITIONS=264} [2022-11-21 16:46:07,020 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 216 predicate places. [2022-11-21 16:46:07,020 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 264 transitions, 2304 flow [2022-11-21 16:46:07,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:07,021 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:46:07,021 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:46:07,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-21 16:46:07,021 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:46:07,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:46:07,022 INFO L85 PathProgramCache]: Analyzing trace with hash -462340898, now seen corresponding path program 21 times [2022-11-21 16:46:07,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:46:07,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189222763] [2022-11-21 16:46:07,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:46:07,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:46:07,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:07,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:46:07,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:46:07,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189222763] [2022-11-21 16:46:07,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189222763] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:46:07,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:46:07,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:46:07,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834218212] [2022-11-21 16:46:07,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:46:07,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:46:07,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:46:07,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:46:07,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:46:07,629 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:46:07,630 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 264 transitions, 2304 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:07,630 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:46:07,630 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:46:07,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:46:09,122 INFO L130 PetriNetUnfolder]: 274/774 cut-off events. [2022-11-21 16:46:09,122 INFO L131 PetriNetUnfolder]: For 4678/4678 co-relation queries the response was YES. [2022-11-21 16:46:09,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4169 conditions, 774 events. 274/774 cut-off events. For 4678/4678 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3874 event pairs, 21 based on Foata normal form. 1/772 useless extension candidates. Maximal degree in co-relation 4077. Up to 472 conditions per place. [2022-11-21 16:46:09,131 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 151 selfloop transitions, 98 changer transitions 26/314 dead transitions. [2022-11-21 16:46:09,131 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 314 transitions, 3258 flow [2022-11-21 16:46:09,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-21 16:46:09,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-21 16:46:09,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1659 transitions. [2022-11-21 16:46:09,134 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5693205216197667 [2022-11-21 16:46:09,134 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1659 transitions. [2022-11-21 16:46:09,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1659 transitions. [2022-11-21 16:46:09,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:46:09,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1659 transitions. [2022-11-21 16:46:09,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 53.516129032258064) internal successors, (1659), 31 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:09,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:09,139 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:09,139 INFO L175 Difference]: Start difference. First operand has 304 places, 264 transitions, 2304 flow. Second operand 31 states and 1659 transitions. [2022-11-21 16:46:09,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 314 transitions, 3258 flow [2022-11-21 16:46:09,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 314 transitions, 3017 flow, removed 49 selfloop flow, removed 30 redundant places. [2022-11-21 16:46:09,183 INFO L231 Difference]: Finished difference. Result has 305 places, 267 transitions, 2388 flow [2022-11-21 16:46:09,183 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2109, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=2388, PETRI_PLACES=305, PETRI_TRANSITIONS=267} [2022-11-21 16:46:09,184 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 217 predicate places. [2022-11-21 16:46:09,184 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 267 transitions, 2388 flow [2022-11-21 16:46:09,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:09,185 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:46:09,185 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:46:09,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-21 16:46:09,185 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:46:09,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:46:09,186 INFO L85 PathProgramCache]: Analyzing trace with hash 51004620, now seen corresponding path program 22 times [2022-11-21 16:46:09,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:46:09,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189661652] [2022-11-21 16:46:09,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:46:09,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:46:09,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:09,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:46:09,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:46:09,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189661652] [2022-11-21 16:46:09,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189661652] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:46:09,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:46:09,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-21 16:46:09,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987473723] [2022-11-21 16:46:09,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:46:09,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-21 16:46:09,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:46:09,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-21 16:46:09,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-21 16:46:09,871 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:46:09,873 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 267 transitions, 2388 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:09,873 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:46:09,873 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:46:09,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:46:11,671 INFO L130 PetriNetUnfolder]: 275/773 cut-off events. [2022-11-21 16:46:11,671 INFO L131 PetriNetUnfolder]: For 4201/4201 co-relation queries the response was YES. [2022-11-21 16:46:11,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4227 conditions, 773 events. 275/773 cut-off events. For 4201/4201 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3859 event pairs, 22 based on Foata normal form. 1/771 useless extension candidates. Maximal degree in co-relation 4133. Up to 503 conditions per place. [2022-11-21 16:46:11,679 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 158 selfloop transitions, 86 changer transitions 29/312 dead transitions. [2022-11-21 16:46:11,679 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 312 transitions, 3292 flow [2022-11-21 16:46:11,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-21 16:46:11,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-21 16:46:11,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1848 transitions. [2022-11-21 16:46:11,682 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5617021276595745 [2022-11-21 16:46:11,683 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1848 transitions. [2022-11-21 16:46:11,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1848 transitions. [2022-11-21 16:46:11,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:46:11,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1848 transitions. [2022-11-21 16:46:11,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 52.8) internal successors, (1848), 35 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:11,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:11,691 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:11,691 INFO L175 Difference]: Start difference. First operand has 305 places, 267 transitions, 2388 flow. Second operand 35 states and 1848 transitions. [2022-11-21 16:46:11,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 312 transitions, 3292 flow [2022-11-21 16:46:11,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 312 transitions, 3022 flow, removed 33 selfloop flow, removed 28 redundant places. [2022-11-21 16:46:11,736 INFO L231 Difference]: Finished difference. Result has 313 places, 267 transitions, 2371 flow [2022-11-21 16:46:11,737 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2169, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=2371, PETRI_PLACES=313, PETRI_TRANSITIONS=267} [2022-11-21 16:46:11,737 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 225 predicate places. [2022-11-21 16:46:11,737 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 267 transitions, 2371 flow [2022-11-21 16:46:11,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:11,738 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:46:11,738 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:46:11,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-21 16:46:11,739 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:46:11,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:46:11,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1553455864, now seen corresponding path program 23 times [2022-11-21 16:46:11,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:46:11,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554484759] [2022-11-21 16:46:11,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:46:11,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:46:11,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:12,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:46:12,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:46:12,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554484759] [2022-11-21 16:46:12,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554484759] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:46:12,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:46:12,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:46:12,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445109536] [2022-11-21 16:46:12,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:46:12,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:46:12,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:46:12,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:46:12,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:46:12,497 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:46:12,498 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 267 transitions, 2371 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:12,498 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:46:12,498 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:46:12,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:46:14,114 INFO L130 PetriNetUnfolder]: 274/770 cut-off events. [2022-11-21 16:46:14,114 INFO L131 PetriNetUnfolder]: For 4314/4314 co-relation queries the response was YES. [2022-11-21 16:46:14,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4202 conditions, 770 events. 274/770 cut-off events. For 4314/4314 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3821 event pairs, 18 based on Foata normal form. 1/769 useless extension candidates. Maximal degree in co-relation 4113. Up to 492 conditions per place. [2022-11-21 16:46:14,122 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 158 selfloop transitions, 96 changer transitions 21/314 dead transitions. [2022-11-21 16:46:14,123 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 314 transitions, 3306 flow [2022-11-21 16:46:14,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-21 16:46:14,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-21 16:46:14,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1706 transitions. [2022-11-21 16:46:14,130 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.567154255319149 [2022-11-21 16:46:14,130 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1706 transitions. [2022-11-21 16:46:14,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1706 transitions. [2022-11-21 16:46:14,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:46:14,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1706 transitions. [2022-11-21 16:46:14,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 53.3125) internal successors, (1706), 32 states have internal predecessors, (1706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:14,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:14,137 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:14,137 INFO L175 Difference]: Start difference. First operand has 313 places, 267 transitions, 2371 flow. Second operand 32 states and 1706 transitions. [2022-11-21 16:46:14,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 314 transitions, 3306 flow [2022-11-21 16:46:14,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 314 transitions, 2999 flow, removed 43 selfloop flow, removed 31 redundant places. [2022-11-21 16:46:14,212 INFO L231 Difference]: Finished difference. Result has 314 places, 273 transitions, 2425 flow [2022-11-21 16:46:14,213 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2104, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=2425, PETRI_PLACES=314, PETRI_TRANSITIONS=273} [2022-11-21 16:46:14,215 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 226 predicate places. [2022-11-21 16:46:14,216 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 273 transitions, 2425 flow [2022-11-21 16:46:14,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:14,216 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:46:14,216 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:46:14,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-21 16:46:14,217 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:46:14,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:46:14,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1348201146, now seen corresponding path program 24 times [2022-11-21 16:46:14,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:46:14,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501263265] [2022-11-21 16:46:14,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:46:14,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:46:14,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:14,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:46:14,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:46:14,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501263265] [2022-11-21 16:46:14,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501263265] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:46:14,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:46:14,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:46:14,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048058104] [2022-11-21 16:46:14,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:46:14,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:46:14,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:46:14,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:46:14,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:46:14,880 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:46:14,880 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 273 transitions, 2425 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:14,881 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:46:14,881 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:46:14,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:46:16,476 INFO L130 PetriNetUnfolder]: 267/758 cut-off events. [2022-11-21 16:46:16,476 INFO L131 PetriNetUnfolder]: For 4154/4154 co-relation queries the response was YES. [2022-11-21 16:46:16,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4128 conditions, 758 events. 267/758 cut-off events. For 4154/4154 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3769 event pairs, 19 based on Foata normal form. 1/756 useless extension candidates. Maximal degree in co-relation 4036. Up to 496 conditions per place. [2022-11-21 16:46:16,483 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 159 selfloop transitions, 90 changer transitions 18/306 dead transitions. [2022-11-21 16:46:16,483 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 306 transitions, 3149 flow [2022-11-21 16:46:16,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-21 16:46:16,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-21 16:46:16,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1597 transitions. [2022-11-21 16:46:16,485 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5663120567375887 [2022-11-21 16:46:16,485 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1597 transitions. [2022-11-21 16:46:16,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1597 transitions. [2022-11-21 16:46:16,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:46:16,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1597 transitions. [2022-11-21 16:46:16,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 53.233333333333334) internal successors, (1597), 30 states have internal predecessors, (1597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:16,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:16,489 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:16,489 INFO L175 Difference]: Start difference. First operand has 314 places, 273 transitions, 2425 flow. Second operand 30 states and 1597 transitions. [2022-11-21 16:46:16,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 306 transitions, 3149 flow [2022-11-21 16:46:16,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 306 transitions, 2963 flow, removed 30 selfloop flow, removed 25 redundant places. [2022-11-21 16:46:16,517 INFO L231 Difference]: Finished difference. Result has 319 places, 270 transitions, 2436 flow [2022-11-21 16:46:16,517 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2247, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=2436, PETRI_PLACES=319, PETRI_TRANSITIONS=270} [2022-11-21 16:46:16,517 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 231 predicate places. [2022-11-21 16:46:16,518 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 270 transitions, 2436 flow [2022-11-21 16:46:16,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:16,518 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:46:16,518 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:46:16,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-21 16:46:16,519 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:46:16,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:46:16,519 INFO L85 PathProgramCache]: Analyzing trace with hash 859753864, now seen corresponding path program 25 times [2022-11-21 16:46:16,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:46:16,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579532524] [2022-11-21 16:46:16,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:46:16,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:46:16,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:17,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:46:17,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:46:17,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579532524] [2022-11-21 16:46:17,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579532524] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:46:17,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:46:17,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-21 16:46:17,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454129711] [2022-11-21 16:46:17,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:46:17,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-21 16:46:17,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:46:17,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-21 16:46:17,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-11-21 16:46:17,178 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:46:17,179 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 270 transitions, 2436 flow. Second operand has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:17,179 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:46:17,179 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:46:17,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:46:18,917 INFO L130 PetriNetUnfolder]: 268/769 cut-off events. [2022-11-21 16:46:18,917 INFO L131 PetriNetUnfolder]: For 4419/4419 co-relation queries the response was YES. [2022-11-21 16:46:18,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4238 conditions, 769 events. 268/769 cut-off events. For 4419/4419 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3855 event pairs, 21 based on Foata normal form. 1/766 useless extension candidates. Maximal degree in co-relation 4144. Up to 505 conditions per place. [2022-11-21 16:46:18,926 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 162 selfloop transitions, 90 changer transitions 15/306 dead transitions. [2022-11-21 16:46:18,927 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 306 transitions, 3292 flow [2022-11-21 16:46:18,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-21 16:46:18,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-21 16:46:18,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1892 transitions. [2022-11-21 16:46:18,930 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5591016548463357 [2022-11-21 16:46:18,930 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1892 transitions. [2022-11-21 16:46:18,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1892 transitions. [2022-11-21 16:46:18,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:46:18,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1892 transitions. [2022-11-21 16:46:18,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 52.55555555555556) internal successors, (1892), 36 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:18,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:18,938 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:18,938 INFO L175 Difference]: Start difference. First operand has 319 places, 270 transitions, 2436 flow. Second operand 36 states and 1892 transitions. [2022-11-21 16:46:18,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 306 transitions, 3292 flow [2022-11-21 16:46:18,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 306 transitions, 3036 flow, removed 19 selfloop flow, removed 31 redundant places. [2022-11-21 16:46:18,988 INFO L231 Difference]: Finished difference. Result has 325 places, 275 transitions, 2513 flow [2022-11-21 16:46:18,989 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2200, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=2513, PETRI_PLACES=325, PETRI_TRANSITIONS=275} [2022-11-21 16:46:18,989 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 237 predicate places. [2022-11-21 16:46:18,989 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 275 transitions, 2513 flow [2022-11-21 16:46:18,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:18,990 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:46:18,990 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:46:18,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-21 16:46:18,990 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:46:18,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:46:18,991 INFO L85 PathProgramCache]: Analyzing trace with hash 671989096, now seen corresponding path program 26 times [2022-11-21 16:46:18,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:46:18,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367812784] [2022-11-21 16:46:18,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:46:18,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:46:19,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:19,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:46:19,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:46:19,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367812784] [2022-11-21 16:46:19,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367812784] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:46:19,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:46:19,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-21 16:46:19,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278164483] [2022-11-21 16:46:19,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:46:19,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-21 16:46:19,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:46:19,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-21 16:46:19,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-21 16:46:19,710 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:46:19,710 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 275 transitions, 2513 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:19,711 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:46:19,711 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:46:19,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:46:21,617 INFO L130 PetriNetUnfolder]: 265/772 cut-off events. [2022-11-21 16:46:21,617 INFO L131 PetriNetUnfolder]: For 4743/4743 co-relation queries the response was YES. [2022-11-21 16:46:21,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4254 conditions, 772 events. 265/772 cut-off events. For 4743/4743 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3889 event pairs, 21 based on Foata normal form. 1/770 useless extension candidates. Maximal degree in co-relation 4158. Up to 505 conditions per place. [2022-11-21 16:46:21,627 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 161 selfloop transitions, 83 changer transitions 19/302 dead transitions. [2022-11-21 16:46:21,627 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 302 transitions, 3200 flow [2022-11-21 16:46:21,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-21 16:46:21,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-21 16:46:21,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1739 transitions. [2022-11-21 16:46:21,629 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5606060606060606 [2022-11-21 16:46:21,629 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1739 transitions. [2022-11-21 16:46:21,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1739 transitions. [2022-11-21 16:46:21,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:46:21,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1739 transitions. [2022-11-21 16:46:21,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 52.696969696969695) internal successors, (1739), 33 states have internal predecessors, (1739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:21,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:21,633 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:21,633 INFO L175 Difference]: Start difference. First operand has 325 places, 275 transitions, 2513 flow. Second operand 33 states and 1739 transitions. [2022-11-21 16:46:21,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 302 transitions, 3200 flow [2022-11-21 16:46:21,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 302 transitions, 2941 flow, removed 61 selfloop flow, removed 31 redundant places. [2022-11-21 16:46:21,670 INFO L231 Difference]: Finished difference. Result has 325 places, 268 transitions, 2421 flow [2022-11-21 16:46:21,671 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2282, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=2421, PETRI_PLACES=325, PETRI_TRANSITIONS=268} [2022-11-21 16:46:21,671 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 237 predicate places. [2022-11-21 16:46:21,671 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 268 transitions, 2421 flow [2022-11-21 16:46:21,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:21,672 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:46:21,672 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:46:21,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-21 16:46:21,672 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:46:21,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:46:21,673 INFO L85 PathProgramCache]: Analyzing trace with hash 215089168, now seen corresponding path program 27 times [2022-11-21 16:46:21,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:46:21,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788447310] [2022-11-21 16:46:21,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:46:21,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:46:21,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:22,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:46:22,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:46:22,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788447310] [2022-11-21 16:46:22,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788447310] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:46:22,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:46:22,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:46:22,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174246047] [2022-11-21 16:46:22,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:46:22,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:46:22,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:46:22,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:46:22,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:46:22,438 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:46:22,439 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 268 transitions, 2421 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:22,439 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:46:22,440 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:46:22,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:46:24,101 INFO L130 PetriNetUnfolder]: 269/771 cut-off events. [2022-11-21 16:46:24,101 INFO L131 PetriNetUnfolder]: For 4782/4782 co-relation queries the response was YES. [2022-11-21 16:46:24,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4328 conditions, 771 events. 269/771 cut-off events. For 4782/4782 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 3881 event pairs, 21 based on Foata normal form. 1/769 useless extension candidates. Maximal degree in co-relation 4233. Up to 489 conditions per place. [2022-11-21 16:46:24,110 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 153 selfloop transitions, 98 changer transitions 25/315 dead transitions. [2022-11-21 16:46:24,110 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 315 transitions, 3372 flow [2022-11-21 16:46:24,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-21 16:46:24,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-21 16:46:24,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1805 transitions. [2022-11-21 16:46:24,114 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5647684605757196 [2022-11-21 16:46:24,114 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1805 transitions. [2022-11-21 16:46:24,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1805 transitions. [2022-11-21 16:46:24,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:46:24,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1805 transitions. [2022-11-21 16:46:24,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.088235294117645) internal successors, (1805), 34 states have internal predecessors, (1805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:24,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:24,122 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:24,122 INFO L175 Difference]: Start difference. First operand has 325 places, 268 transitions, 2421 flow. Second operand 34 states and 1805 transitions. [2022-11-21 16:46:24,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 315 transitions, 3372 flow [2022-11-21 16:46:24,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 315 transitions, 3126 flow, removed 18 selfloop flow, removed 33 redundant places. [2022-11-21 16:46:24,179 INFO L231 Difference]: Finished difference. Result has 326 places, 271 transitions, 2506 flow [2022-11-21 16:46:24,180 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2197, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=2506, PETRI_PLACES=326, PETRI_TRANSITIONS=271} [2022-11-21 16:46:24,181 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 238 predicate places. [2022-11-21 16:46:24,181 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 271 transitions, 2506 flow [2022-11-21 16:46:24,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:24,182 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:46:24,182 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:46:24,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-21 16:46:24,182 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:46:24,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:46:24,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1302081822, now seen corresponding path program 28 times [2022-11-21 16:46:24,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:46:24,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388706245] [2022-11-21 16:46:24,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:46:24,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:46:24,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:24,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:46:24,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:46:24,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388706245] [2022-11-21 16:46:24,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388706245] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:46:24,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:46:24,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:46:24,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331743528] [2022-11-21 16:46:24,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:46:24,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:46:24,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:46:24,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:46:24,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:46:24,890 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:46:24,891 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 271 transitions, 2506 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:24,891 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:46:24,891 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:46:24,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:46:26,400 INFO L130 PetriNetUnfolder]: 264/759 cut-off events. [2022-11-21 16:46:26,401 INFO L131 PetriNetUnfolder]: For 4909/4909 co-relation queries the response was YES. [2022-11-21 16:46:26,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4314 conditions, 759 events. 264/759 cut-off events. For 4909/4909 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3793 event pairs, 18 based on Foata normal form. 1/757 useless extension candidates. Maximal degree in co-relation 4216. Up to 465 conditions per place. [2022-11-21 16:46:26,409 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 147 selfloop transitions, 113 changer transitions 18/317 dead transitions. [2022-11-21 16:46:26,410 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 317 transitions, 3488 flow [2022-11-21 16:46:26,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-21 16:46:26,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-11-21 16:46:26,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 1554 transitions. [2022-11-21 16:46:26,413 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.57006603081438 [2022-11-21 16:46:26,413 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 1554 transitions. [2022-11-21 16:46:26,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 1554 transitions. [2022-11-21 16:46:26,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:46:26,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 1554 transitions. [2022-11-21 16:46:26,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 53.58620689655172) internal successors, (1554), 29 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:26,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 94.0) internal successors, (2820), 30 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:26,417 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 94.0) internal successors, (2820), 30 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:26,418 INFO L175 Difference]: Start difference. First operand has 326 places, 271 transitions, 2506 flow. Second operand 29 states and 1554 transitions. [2022-11-21 16:46:26,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 317 transitions, 3488 flow [2022-11-21 16:46:26,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 317 transitions, 3214 flow, removed 38 selfloop flow, removed 27 redundant places. [2022-11-21 16:46:26,472 INFO L231 Difference]: Finished difference. Result has 325 places, 277 transitions, 2617 flow [2022-11-21 16:46:26,473 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2250, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=2617, PETRI_PLACES=325, PETRI_TRANSITIONS=277} [2022-11-21 16:46:26,473 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 237 predicate places. [2022-11-21 16:46:26,473 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 277 transitions, 2617 flow [2022-11-21 16:46:26,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:26,474 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:46:26,474 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:46:26,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-21 16:46:26,475 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:46:26,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:46:26,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1890809614, now seen corresponding path program 29 times [2022-11-21 16:46:26,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:46:26,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542754724] [2022-11-21 16:46:26,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:46:26,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:46:26,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:27,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:46:27,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:46:27,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542754724] [2022-11-21 16:46:27,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542754724] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:46:27,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:46:27,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-21 16:46:27,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131323158] [2022-11-21 16:46:27,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:46:27,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-21 16:46:27,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:46:27,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-21 16:46:27,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-11-21 16:46:27,134 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:46:27,135 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 277 transitions, 2617 flow. Second operand has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:27,135 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:46:27,135 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:46:27,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:46:28,651 INFO L130 PetriNetUnfolder]: 260/739 cut-off events. [2022-11-21 16:46:28,652 INFO L131 PetriNetUnfolder]: For 4860/4860 co-relation queries the response was YES. [2022-11-21 16:46:28,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4240 conditions, 739 events. 260/739 cut-off events. For 4860/4860 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3606 event pairs, 20 based on Foata normal form. 1/737 useless extension candidates. Maximal degree in co-relation 4141. Up to 507 conditions per place. [2022-11-21 16:46:28,664 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 168 selfloop transitions, 64 changer transitions 29/300 dead transitions. [2022-11-21 16:46:28,664 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 300 transitions, 3242 flow [2022-11-21 16:46:28,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-21 16:46:28,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-21 16:46:28,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1681 transitions. [2022-11-21 16:46:28,667 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.558843085106383 [2022-11-21 16:46:28,667 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1681 transitions. [2022-11-21 16:46:28,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1681 transitions. [2022-11-21 16:46:28,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:46:28,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1681 transitions. [2022-11-21 16:46:28,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 52.53125) internal successors, (1681), 32 states have internal predecessors, (1681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:28,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:28,674 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:28,674 INFO L175 Difference]: Start difference. First operand has 325 places, 277 transitions, 2617 flow. Second operand 32 states and 1681 transitions. [2022-11-21 16:46:28,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 300 transitions, 3242 flow [2022-11-21 16:46:28,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 300 transitions, 2993 flow, removed 41 selfloop flow, removed 24 redundant places. [2022-11-21 16:46:28,713 INFO L231 Difference]: Finished difference. Result has 331 places, 257 transitions, 2275 flow [2022-11-21 16:46:28,713 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2374, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=2275, PETRI_PLACES=331, PETRI_TRANSITIONS=257} [2022-11-21 16:46:28,714 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 243 predicate places. [2022-11-21 16:46:28,714 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 257 transitions, 2275 flow [2022-11-21 16:46:28,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:28,714 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:46:28,715 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:46:28,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-21 16:46:28,715 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:46:28,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:46:28,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1394251328, now seen corresponding path program 30 times [2022-11-21 16:46:28,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:46:28,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907089735] [2022-11-21 16:46:28,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:46:28,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:46:28,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:29,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:46:29,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:46:29,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907089735] [2022-11-21 16:46:29,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907089735] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:46:29,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:46:29,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:46:29,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616059510] [2022-11-21 16:46:29,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:46:29,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:46:29,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:46:29,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:46:29,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:46:29,296 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:46:29,297 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 257 transitions, 2275 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:29,297 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:46:29,297 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:46:29,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:46:30,622 INFO L130 PetriNetUnfolder]: 263/738 cut-off events. [2022-11-21 16:46:30,622 INFO L131 PetriNetUnfolder]: For 4417/4417 co-relation queries the response was YES. [2022-11-21 16:46:30,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4096 conditions, 738 events. 263/738 cut-off events. For 4417/4417 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3598 event pairs, 18 based on Foata normal form. 1/736 useless extension candidates. Maximal degree in co-relation 3998. Up to 465 conditions per place. [2022-11-21 16:46:30,630 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 143 selfloop transitions, 99 changer transitions 18/299 dead transitions. [2022-11-21 16:46:30,630 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 299 transitions, 3142 flow [2022-11-21 16:46:30,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-21 16:46:30,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-21 16:46:30,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1603 transitions. [2022-11-21 16:46:30,632 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5684397163120567 [2022-11-21 16:46:30,632 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1603 transitions. [2022-11-21 16:46:30,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1603 transitions. [2022-11-21 16:46:30,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:46:30,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1603 transitions. [2022-11-21 16:46:30,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 53.43333333333333) internal successors, (1603), 30 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:30,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:30,638 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:30,638 INFO L175 Difference]: Start difference. First operand has 331 places, 257 transitions, 2275 flow. Second operand 30 states and 1603 transitions. [2022-11-21 16:46:30,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 299 transitions, 3142 flow [2022-11-21 16:46:30,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 299 transitions, 2849 flow, removed 37 selfloop flow, removed 37 redundant places. [2022-11-21 16:46:30,685 INFO L231 Difference]: Finished difference. Result has 302 places, 259 transitions, 2286 flow [2022-11-21 16:46:30,685 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2016, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=2286, PETRI_PLACES=302, PETRI_TRANSITIONS=259} [2022-11-21 16:46:30,686 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 214 predicate places. [2022-11-21 16:46:30,686 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 259 transitions, 2286 flow [2022-11-21 16:46:30,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:30,686 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:46:30,687 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:46:30,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-21 16:46:30,687 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:46:30,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:46:30,687 INFO L85 PathProgramCache]: Analyzing trace with hash -920258534, now seen corresponding path program 31 times [2022-11-21 16:46:30,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:46:30,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557797594] [2022-11-21 16:46:30,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:46:30,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:46:30,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:31,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:46:31,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:46:31,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557797594] [2022-11-21 16:46:31,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557797594] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:46:31,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:46:31,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:46:31,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596343123] [2022-11-21 16:46:31,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:46:31,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:46:31,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:46:31,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:46:31,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:46:31,279 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:46:31,279 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 259 transitions, 2286 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:31,280 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:46:31,280 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:46:31,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:46:32,763 INFO L130 PetriNetUnfolder]: 262/725 cut-off events. [2022-11-21 16:46:32,763 INFO L131 PetriNetUnfolder]: For 4459/4459 co-relation queries the response was YES. [2022-11-21 16:46:32,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4034 conditions, 725 events. 262/725 cut-off events. For 4459/4459 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3496 event pairs, 18 based on Foata normal form. 1/723 useless extension candidates. Maximal degree in co-relation 3943. Up to 474 conditions per place. [2022-11-21 16:46:32,771 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 148 selfloop transitions, 89 changer transitions 21/297 dead transitions. [2022-11-21 16:46:32,771 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 297 transitions, 3113 flow [2022-11-21 16:46:32,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-21 16:46:32,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-21 16:46:32,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1698 transitions. [2022-11-21 16:46:32,774 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5644946808510638 [2022-11-21 16:46:32,774 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1698 transitions. [2022-11-21 16:46:32,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1698 transitions. [2022-11-21 16:46:32,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:46:32,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1698 transitions. [2022-11-21 16:46:32,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 53.0625) internal successors, (1698), 32 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:32,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:32,777 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:32,778 INFO L175 Difference]: Start difference. First operand has 302 places, 259 transitions, 2286 flow. Second operand 32 states and 1698 transitions. [2022-11-21 16:46:32,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 297 transitions, 3113 flow [2022-11-21 16:46:32,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 297 transitions, 2896 flow, removed 30 selfloop flow, removed 28 redundant places. [2022-11-21 16:46:32,804 INFO L231 Difference]: Finished difference. Result has 307 places, 257 transitions, 2300 flow [2022-11-21 16:46:32,804 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2087, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=2300, PETRI_PLACES=307, PETRI_TRANSITIONS=257} [2022-11-21 16:46:32,804 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 219 predicate places. [2022-11-21 16:46:32,805 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 257 transitions, 2300 flow [2022-11-21 16:46:32,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:32,805 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:46:32,805 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:46:32,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-21 16:46:32,806 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:46:32,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:46:32,806 INFO L85 PathProgramCache]: Analyzing trace with hash -394051736, now seen corresponding path program 32 times [2022-11-21 16:46:32,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:46:32,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122011864] [2022-11-21 16:46:32,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:46:32,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:46:32,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:33,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:46:33,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:46:33,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122011864] [2022-11-21 16:46:33,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122011864] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:46:33,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:46:33,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:46:33,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175186362] [2022-11-21 16:46:33,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:46:33,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:46:33,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:46:33,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:46:33,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:46:33,379 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:46:33,380 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 257 transitions, 2300 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:33,380 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:46:33,380 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:46:33,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:46:34,702 INFO L130 PetriNetUnfolder]: 256/721 cut-off events. [2022-11-21 16:46:34,703 INFO L131 PetriNetUnfolder]: For 4586/4586 co-relation queries the response was YES. [2022-11-21 16:46:34,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4019 conditions, 721 events. 256/721 cut-off events. For 4586/4586 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3459 event pairs, 17 based on Foata normal form. 1/719 useless extension candidates. Maximal degree in co-relation 3929. Up to 456 conditions per place. [2022-11-21 16:46:34,710 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 143 selfloop transitions, 100 changer transitions 14/296 dead transitions. [2022-11-21 16:46:34,710 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 296 transitions, 3138 flow [2022-11-21 16:46:34,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-21 16:46:34,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-21 16:46:34,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1701 transitions. [2022-11-21 16:46:34,713 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5654920212765957 [2022-11-21 16:46:34,713 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1701 transitions. [2022-11-21 16:46:34,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1701 transitions. [2022-11-21 16:46:34,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:46:34,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1701 transitions. [2022-11-21 16:46:34,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 53.15625) internal successors, (1701), 32 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:34,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:34,719 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:34,719 INFO L175 Difference]: Start difference. First operand has 307 places, 257 transitions, 2300 flow. Second operand 32 states and 1701 transitions. [2022-11-21 16:46:34,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 296 transitions, 3138 flow [2022-11-21 16:46:34,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 296 transitions, 2882 flow, removed 40 selfloop flow, removed 30 redundant places. [2022-11-21 16:46:34,762 INFO L231 Difference]: Finished difference. Result has 307 places, 260 transitions, 2367 flow [2022-11-21 16:46:34,762 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2078, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=2367, PETRI_PLACES=307, PETRI_TRANSITIONS=260} [2022-11-21 16:46:34,763 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 219 predicate places. [2022-11-21 16:46:34,763 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 260 transitions, 2367 flow [2022-11-21 16:46:34,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:34,763 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:46:34,764 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:46:34,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-21 16:46:34,764 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:46:34,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:46:34,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1670592494, now seen corresponding path program 33 times [2022-11-21 16:46:34,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:46:34,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615348365] [2022-11-21 16:46:34,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:46:34,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:46:34,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:35,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:46:35,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:46:35,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615348365] [2022-11-21 16:46:35,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615348365] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:46:35,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:46:35,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:46:35,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595838460] [2022-11-21 16:46:35,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:46:35,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:46:35,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:46:35,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:46:35,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:46:35,363 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:46:35,364 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 260 transitions, 2367 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:35,364 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:46:35,364 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:46:35,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:46:36,812 INFO L130 PetriNetUnfolder]: 255/716 cut-off events. [2022-11-21 16:46:36,812 INFO L131 PetriNetUnfolder]: For 4077/4077 co-relation queries the response was YES. [2022-11-21 16:46:36,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3978 conditions, 716 events. 255/716 cut-off events. For 4077/4077 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3440 event pairs, 19 based on Foata normal form. 1/713 useless extension candidates. Maximal degree in co-relation 3888. Up to 449 conditions per place. [2022-11-21 16:46:36,818 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 139 selfloop transitions, 92 changer transitions 25/295 dead transitions. [2022-11-21 16:46:36,819 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 295 transitions, 3134 flow [2022-11-21 16:46:36,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-21 16:46:36,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-21 16:46:36,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1749 transitions. [2022-11-21 16:46:36,824 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5638297872340425 [2022-11-21 16:46:36,824 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1749 transitions. [2022-11-21 16:46:36,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1749 transitions. [2022-11-21 16:46:36,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:46:36,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1749 transitions. [2022-11-21 16:46:36,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 53.0) internal successors, (1749), 33 states have internal predecessors, (1749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:36,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:36,830 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:36,830 INFO L175 Difference]: Start difference. First operand has 307 places, 260 transitions, 2367 flow. Second operand 33 states and 1749 transitions. [2022-11-21 16:46:36,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 295 transitions, 3134 flow [2022-11-21 16:46:36,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 295 transitions, 2900 flow, removed 32 selfloop flow, removed 27 redundant places. [2022-11-21 16:46:36,871 INFO L231 Difference]: Finished difference. Result has 315 places, 249 transitions, 2284 flow [2022-11-21 16:46:36,872 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2148, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=2284, PETRI_PLACES=315, PETRI_TRANSITIONS=249} [2022-11-21 16:46:36,872 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 227 predicate places. [2022-11-21 16:46:36,873 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 249 transitions, 2284 flow [2022-11-21 16:46:36,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:36,873 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:46:36,873 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:46:36,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-21 16:46:36,874 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:46:36,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:46:36,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1177861492, now seen corresponding path program 34 times [2022-11-21 16:46:36,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:46:36,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166435598] [2022-11-21 16:46:36,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:46:36,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:46:36,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:37,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:46:37,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:46:37,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166435598] [2022-11-21 16:46:37,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166435598] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:46:37,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:46:37,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:46:37,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058016950] [2022-11-21 16:46:37,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:46:37,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:46:37,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:46:37,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:46:37,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:46:37,508 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:46:37,509 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 249 transitions, 2284 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:37,509 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:46:37,509 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:46:37,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:46:38,924 INFO L130 PetriNetUnfolder]: 250/699 cut-off events. [2022-11-21 16:46:38,924 INFO L131 PetriNetUnfolder]: For 4452/4452 co-relation queries the response was YES. [2022-11-21 16:46:38,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3991 conditions, 699 events. 250/699 cut-off events. For 4452/4452 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3317 event pairs, 17 based on Foata normal form. 1/697 useless extension candidates. Maximal degree in co-relation 3897. Up to 468 conditions per place. [2022-11-21 16:46:38,931 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 147 selfloop transitions, 83 changer transitions 16/285 dead transitions. [2022-11-21 16:46:38,931 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 285 transitions, 3064 flow [2022-11-21 16:46:38,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-21 16:46:38,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-21 16:46:38,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1792 transitions. [2022-11-21 16:46:38,933 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5607008760951189 [2022-11-21 16:46:38,933 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1792 transitions. [2022-11-21 16:46:38,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1792 transitions. [2022-11-21 16:46:38,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:46:38,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1792 transitions. [2022-11-21 16:46:38,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 52.705882352941174) internal successors, (1792), 34 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:38,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:38,936 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:38,936 INFO L175 Difference]: Start difference. First operand has 315 places, 249 transitions, 2284 flow. Second operand 34 states and 1792 transitions. [2022-11-21 16:46:38,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 285 transitions, 3064 flow [2022-11-21 16:46:38,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 285 transitions, 2770 flow, removed 32 selfloop flow, removed 37 redundant places. [2022-11-21 16:46:38,962 INFO L231 Difference]: Finished difference. Result has 307 places, 251 transitions, 2245 flow [2022-11-21 16:46:38,963 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2025, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=2245, PETRI_PLACES=307, PETRI_TRANSITIONS=251} [2022-11-21 16:46:38,963 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 219 predicate places. [2022-11-21 16:46:38,963 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 251 transitions, 2245 flow [2022-11-21 16:46:38,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:38,963 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:46:38,963 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:46:38,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-21 16:46:38,964 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:46:38,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:46:38,964 INFO L85 PathProgramCache]: Analyzing trace with hash 103252404, now seen corresponding path program 35 times [2022-11-21 16:46:38,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:46:38,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403812312] [2022-11-21 16:46:38,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:46:38,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:46:38,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:39,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:46:39,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:46:39,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403812312] [2022-11-21 16:46:39,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403812312] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:46:39,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:46:39,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:46:39,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144881052] [2022-11-21 16:46:39,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:46:39,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:46:39,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:46:39,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:46:39,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:46:39,476 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:46:39,477 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 251 transitions, 2245 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:39,477 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:46:39,477 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:46:39,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:46:40,811 INFO L130 PetriNetUnfolder]: 245/684 cut-off events. [2022-11-21 16:46:40,811 INFO L131 PetriNetUnfolder]: For 4086/4086 co-relation queries the response was YES. [2022-11-21 16:46:40,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3855 conditions, 684 events. 245/684 cut-off events. For 4086/4086 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3222 event pairs, 19 based on Foata normal form. 1/681 useless extension candidates. Maximal degree in co-relation 3763. Up to 464 conditions per place. [2022-11-21 16:46:40,820 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 146 selfloop transitions, 70 changer transitions 21/276 dead transitions. [2022-11-21 16:46:40,820 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 276 transitions, 2864 flow [2022-11-21 16:46:40,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-21 16:46:40,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-21 16:46:40,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1636 transitions. [2022-11-21 16:46:40,823 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5614275909402883 [2022-11-21 16:46:40,823 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1636 transitions. [2022-11-21 16:46:40,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1636 transitions. [2022-11-21 16:46:40,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:46:40,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1636 transitions. [2022-11-21 16:46:40,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 52.774193548387096) internal successors, (1636), 31 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:40,828 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:40,829 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:40,829 INFO L175 Difference]: Start difference. First operand has 307 places, 251 transitions, 2245 flow. Second operand 31 states and 1636 transitions. [2022-11-21 16:46:40,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 276 transitions, 2864 flow [2022-11-21 16:46:40,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 276 transitions, 2669 flow, removed 30 selfloop flow, removed 28 redundant places. [2022-11-21 16:46:40,868 INFO L231 Difference]: Finished difference. Result has 307 places, 238 transitions, 2077 flow [2022-11-21 16:46:40,869 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2056, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=2077, PETRI_PLACES=307, PETRI_TRANSITIONS=238} [2022-11-21 16:46:40,869 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 219 predicate places. [2022-11-21 16:46:40,869 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 238 transitions, 2077 flow [2022-11-21 16:46:40,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:40,870 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:46:40,870 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:46:40,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-21 16:46:40,870 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:46:40,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:46:40,871 INFO L85 PathProgramCache]: Analyzing trace with hash -710610230, now seen corresponding path program 36 times [2022-11-21 16:46:40,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:46:40,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377821023] [2022-11-21 16:46:40,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:46:40,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:46:40,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:41,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:46:41,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:46:41,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377821023] [2022-11-21 16:46:41,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377821023] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:46:41,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:46:41,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:46:41,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940829869] [2022-11-21 16:46:41,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:46:41,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:46:41,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:46:41,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:46:41,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:46:41,492 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:46:41,493 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 238 transitions, 2077 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:41,493 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:46:41,493 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:46:41,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:46:42,832 INFO L130 PetriNetUnfolder]: 241/670 cut-off events. [2022-11-21 16:46:42,832 INFO L131 PetriNetUnfolder]: For 3996/3996 co-relation queries the response was YES. [2022-11-21 16:46:42,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3764 conditions, 670 events. 241/670 cut-off events. For 3996/3996 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3119 event pairs, 18 based on Foata normal form. 1/668 useless extension candidates. Maximal degree in co-relation 3671. Up to 438 conditions per place. [2022-11-21 16:46:42,839 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 128 selfloop transitions, 79 changer transitions 22/268 dead transitions. [2022-11-21 16:46:42,839 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 268 transitions, 2710 flow [2022-11-21 16:46:42,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-21 16:46:42,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-21 16:46:42,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1593 transitions. [2022-11-21 16:46:42,842 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5648936170212766 [2022-11-21 16:46:42,842 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1593 transitions. [2022-11-21 16:46:42,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1593 transitions. [2022-11-21 16:46:42,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:46:42,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1593 transitions. [2022-11-21 16:46:42,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 53.1) internal successors, (1593), 30 states have internal predecessors, (1593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:42,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:42,847 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:42,847 INFO L175 Difference]: Start difference. First operand has 307 places, 238 transitions, 2077 flow. Second operand 30 states and 1593 transitions. [2022-11-21 16:46:42,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 268 transitions, 2710 flow [2022-11-21 16:46:42,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 268 transitions, 2435 flow, removed 21 selfloop flow, removed 36 redundant places. [2022-11-21 16:46:42,874 INFO L231 Difference]: Finished difference. Result has 285 places, 228 transitions, 1909 flow [2022-11-21 16:46:42,874 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1808, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1909, PETRI_PLACES=285, PETRI_TRANSITIONS=228} [2022-11-21 16:46:42,874 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 197 predicate places. [2022-11-21 16:46:42,875 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 228 transitions, 1909 flow [2022-11-21 16:46:42,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:42,875 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:46:42,876 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:46:42,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-11-21 16:46:42,876 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:46:42,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:46:42,877 INFO L85 PathProgramCache]: Analyzing trace with hash -921725570, now seen corresponding path program 37 times [2022-11-21 16:46:42,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:46:42,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911660543] [2022-11-21 16:46:42,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:46:42,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:46:42,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:43,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:46:43,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:46:43,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911660543] [2022-11-21 16:46:43,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911660543] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:46:43,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:46:43,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:46:43,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766207752] [2022-11-21 16:46:43,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:46:43,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:46:43,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:46:43,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:46:43,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:46:43,510 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:46:43,511 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 228 transitions, 1909 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:43,511 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:46:43,511 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:46:43,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:46:44,841 INFO L130 PetriNetUnfolder]: 234/643 cut-off events. [2022-11-21 16:46:44,842 INFO L131 PetriNetUnfolder]: For 3490/3490 co-relation queries the response was YES. [2022-11-21 16:46:44,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3525 conditions, 643 events. 234/643 cut-off events. For 3490/3490 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2926 event pairs, 15 based on Foata normal form. 1/641 useless extension candidates. Maximal degree in co-relation 3442. Up to 434 conditions per place. [2022-11-21 16:46:44,851 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 125 selfloop transitions, 69 changer transitions 22/255 dead transitions. [2022-11-21 16:46:44,851 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 255 transitions, 2486 flow [2022-11-21 16:46:44,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-21 16:46:44,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-21 16:46:44,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1586 transitions. [2022-11-21 16:46:44,854 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5624113475177305 [2022-11-21 16:46:44,854 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1586 transitions. [2022-11-21 16:46:44,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1586 transitions. [2022-11-21 16:46:44,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:46:44,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1586 transitions. [2022-11-21 16:46:44,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 52.86666666666667) internal successors, (1586), 30 states have internal predecessors, (1586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:44,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:44,859 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:44,859 INFO L175 Difference]: Start difference. First operand has 285 places, 228 transitions, 1909 flow. Second operand 30 states and 1586 transitions. [2022-11-21 16:46:44,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 255 transitions, 2486 flow [2022-11-21 16:46:44,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 255 transitions, 2231 flow, removed 12 selfloop flow, removed 34 redundant places. [2022-11-21 16:46:44,888 INFO L231 Difference]: Finished difference. Result has 273 places, 218 transitions, 1739 flow [2022-11-21 16:46:44,888 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1662, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1739, PETRI_PLACES=273, PETRI_TRANSITIONS=218} [2022-11-21 16:46:44,889 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 185 predicate places. [2022-11-21 16:46:44,889 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 218 transitions, 1739 flow [2022-11-21 16:46:44,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:44,889 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:46:44,890 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:46:44,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-11-21 16:46:44,890 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:46:44,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:46:44,891 INFO L85 PathProgramCache]: Analyzing trace with hash 199721444, now seen corresponding path program 38 times [2022-11-21 16:46:44,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:46:44,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390544805] [2022-11-21 16:46:44,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:46:44,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:46:44,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:45,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:46:45,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:46:45,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390544805] [2022-11-21 16:46:45,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390544805] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:46:45,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:46:45,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-21 16:46:45,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635977557] [2022-11-21 16:46:45,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:46:45,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-21 16:46:45,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:46:45,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-21 16:46:45,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-21 16:46:45,598 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:46:45,599 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 218 transitions, 1739 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:45,599 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:46:45,599 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:46:45,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:46:47,097 INFO L130 PetriNetUnfolder]: 230/626 cut-off events. [2022-11-21 16:46:47,098 INFO L131 PetriNetUnfolder]: For 3083/3083 co-relation queries the response was YES. [2022-11-21 16:46:47,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3331 conditions, 626 events. 230/626 cut-off events. For 3083/3083 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2802 event pairs, 15 based on Foata normal form. 1/624 useless extension candidates. Maximal degree in co-relation 3253. Up to 426 conditions per place. [2022-11-21 16:46:47,107 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 118 selfloop transitions, 72 changer transitions 15/244 dead transitions. [2022-11-21 16:46:47,107 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 244 transitions, 2311 flow [2022-11-21 16:46:47,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-21 16:46:47,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-21 16:46:47,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1682 transitions. [2022-11-21 16:46:47,110 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5591755319148937 [2022-11-21 16:46:47,110 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1682 transitions. [2022-11-21 16:46:47,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1682 transitions. [2022-11-21 16:46:47,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:46:47,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1682 transitions. [2022-11-21 16:46:47,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 52.5625) internal successors, (1682), 32 states have internal predecessors, (1682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:47,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:47,116 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:47,116 INFO L175 Difference]: Start difference. First operand has 273 places, 218 transitions, 1739 flow. Second operand 32 states and 1682 transitions. [2022-11-21 16:46:47,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 244 transitions, 2311 flow [2022-11-21 16:46:47,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 244 transitions, 2076 flow, removed 15 selfloop flow, removed 33 redundant places. [2022-11-21 16:46:47,147 INFO L231 Difference]: Finished difference. Result has 261 places, 213 transitions, 1649 flow [2022-11-21 16:46:47,148 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1516, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1649, PETRI_PLACES=261, PETRI_TRANSITIONS=213} [2022-11-21 16:46:47,148 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 173 predicate places. [2022-11-21 16:46:47,148 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 213 transitions, 1649 flow [2022-11-21 16:46:47,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:47,149 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:46:47,149 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:46:47,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-11-21 16:46:47,149 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:46:47,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:46:47,150 INFO L85 PathProgramCache]: Analyzing trace with hash -358046080, now seen corresponding path program 39 times [2022-11-21 16:46:47,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:46:47,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626789482] [2022-11-21 16:46:47,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:46:47,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:46:47,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:47,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:46:47,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:46:47,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626789482] [2022-11-21 16:46:47,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626789482] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:46:47,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:46:47,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-21 16:46:47,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362981922] [2022-11-21 16:46:47,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:46:47,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-21 16:46:47,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:46:47,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-21 16:46:47,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-21 16:46:47,719 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:46:47,719 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 213 transitions, 1649 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:47,719 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:46:47,719 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:46:47,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:46:48,994 INFO L130 PetriNetUnfolder]: 226/611 cut-off events. [2022-11-21 16:46:48,994 INFO L131 PetriNetUnfolder]: For 2965/2965 co-relation queries the response was YES. [2022-11-21 16:46:48,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3208 conditions, 611 events. 226/611 cut-off events. For 2965/2965 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2722 event pairs, 18 based on Foata normal form. 1/610 useless extension candidates. Maximal degree in co-relation 3133. Up to 424 conditions per place. [2022-11-21 16:46:48,999 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 112 selfloop transitions, 55 changer transitions 31/237 dead transitions. [2022-11-21 16:46:48,999 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 237 transitions, 2158 flow [2022-11-21 16:46:48,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-21 16:46:48,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-21 16:46:49,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1577 transitions. [2022-11-21 16:46:49,001 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5592198581560284 [2022-11-21 16:46:49,001 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1577 transitions. [2022-11-21 16:46:49,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1577 transitions. [2022-11-21 16:46:49,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:46:49,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1577 transitions. [2022-11-21 16:46:49,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 52.56666666666667) internal successors, (1577), 30 states have internal predecessors, (1577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:49,004 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:49,004 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:49,004 INFO L175 Difference]: Start difference. First operand has 261 places, 213 transitions, 1649 flow. Second operand 30 states and 1577 transitions. [2022-11-21 16:46:49,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 237 transitions, 2158 flow [2022-11-21 16:46:49,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 237 transitions, 1957 flow, removed 10 selfloop flow, removed 31 redundant places. [2022-11-21 16:46:49,024 INFO L231 Difference]: Finished difference. Result has 255 places, 196 transitions, 1474 flow [2022-11-21 16:46:49,024 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1454, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1474, PETRI_PLACES=255, PETRI_TRANSITIONS=196} [2022-11-21 16:46:49,025 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 167 predicate places. [2022-11-21 16:46:49,025 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 196 transitions, 1474 flow [2022-11-21 16:46:49,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:49,026 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:46:49,026 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:46:49,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-11-21 16:46:49,026 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:46:49,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:46:49,027 INFO L85 PathProgramCache]: Analyzing trace with hash 2011754598, now seen corresponding path program 40 times [2022-11-21 16:46:49,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:46:49,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971020897] [2022-11-21 16:46:49,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:46:49,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:46:49,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:49,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:46:49,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:46:49,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971020897] [2022-11-21 16:46:49,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971020897] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:46:49,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:46:49,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:46:49,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428208394] [2022-11-21 16:46:49,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:46:49,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:46:49,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:46:49,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:46:49,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:46:49,561 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:46:49,562 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 196 transitions, 1474 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:49,562 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:46:49,562 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:46:49,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:46:51,262 INFO L130 PetriNetUnfolder]: 260/728 cut-off events. [2022-11-21 16:46:51,262 INFO L131 PetriNetUnfolder]: For 3522/3522 co-relation queries the response was YES. [2022-11-21 16:46:51,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3673 conditions, 728 events. 260/728 cut-off events. For 3522/3522 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3596 event pairs, 53 based on Foata normal form. 1/727 useless extension candidates. Maximal degree in co-relation 3600. Up to 435 conditions per place. [2022-11-21 16:46:51,268 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 115 selfloop transitions, 81 changer transitions 45/280 dead transitions. [2022-11-21 16:46:51,268 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 280 transitions, 2767 flow [2022-11-21 16:46:51,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-21 16:46:51,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-21 16:46:51,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1965 transitions. [2022-11-21 16:46:51,270 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5649798734905118 [2022-11-21 16:46:51,271 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1965 transitions. [2022-11-21 16:46:51,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1965 transitions. [2022-11-21 16:46:51,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:46:51,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1965 transitions. [2022-11-21 16:46:51,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 53.108108108108105) internal successors, (1965), 37 states have internal predecessors, (1965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:51,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:51,298 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:51,299 INFO L175 Difference]: Start difference. First operand has 255 places, 196 transitions, 1474 flow. Second operand 37 states and 1965 transitions. [2022-11-21 16:46:51,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 280 transitions, 2767 flow [2022-11-21 16:46:51,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 280 transitions, 2503 flow, removed 25 selfloop flow, removed 28 redundant places. [2022-11-21 16:46:51,334 INFO L231 Difference]: Finished difference. Result has 257 places, 221 transitions, 1845 flow [2022-11-21 16:46:51,335 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1259, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=1845, PETRI_PLACES=257, PETRI_TRANSITIONS=221} [2022-11-21 16:46:51,335 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 169 predicate places. [2022-11-21 16:46:51,335 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 221 transitions, 1845 flow [2022-11-21 16:46:51,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:51,336 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:46:51,336 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:46:51,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-11-21 16:46:51,336 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:46:51,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:46:51,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1432156986, now seen corresponding path program 41 times [2022-11-21 16:46:51,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:46:51,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750251156] [2022-11-21 16:46:51,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:46:51,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:46:51,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:51,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:46:51,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:46:51,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750251156] [2022-11-21 16:46:51,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750251156] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:46:51,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:46:51,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:46:51,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363251403] [2022-11-21 16:46:51,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:46:51,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:46:51,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:46:51,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:46:51,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:46:51,911 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:46:51,911 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 221 transitions, 1845 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:51,911 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:46:51,912 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:46:51,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:46:53,472 INFO L130 PetriNetUnfolder]: 280/764 cut-off events. [2022-11-21 16:46:53,472 INFO L131 PetriNetUnfolder]: For 5492/5492 co-relation queries the response was YES. [2022-11-21 16:46:53,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4223 conditions, 764 events. 280/764 cut-off events. For 5492/5492 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3686 event pairs, 39 based on Foata normal form. 1/763 useless extension candidates. Maximal degree in co-relation 4140. Up to 482 conditions per place. [2022-11-21 16:46:53,479 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 146 selfloop transitions, 97 changer transitions 22/304 dead transitions. [2022-11-21 16:46:53,479 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 304 transitions, 3346 flow [2022-11-21 16:46:53,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-21 16:46:53,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-11-21 16:46:53,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 2071 transitions. [2022-11-21 16:46:53,482 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5649208947081288 [2022-11-21 16:46:53,482 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 2071 transitions. [2022-11-21 16:46:53,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 2071 transitions. [2022-11-21 16:46:53,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:46:53,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 2071 transitions. [2022-11-21 16:46:53,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 53.1025641025641) internal successors, (2071), 39 states have internal predecessors, (2071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:53,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 94.0) internal successors, (3760), 40 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:53,487 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 94.0) internal successors, (3760), 40 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:53,487 INFO L175 Difference]: Start difference. First operand has 257 places, 221 transitions, 1845 flow. Second operand 39 states and 2071 transitions. [2022-11-21 16:46:53,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 304 transitions, 3346 flow [2022-11-21 16:46:53,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 304 transitions, 2978 flow, removed 148 selfloop flow, removed 21 redundant places. [2022-11-21 16:46:53,514 INFO L231 Difference]: Finished difference. Result has 277 places, 258 transitions, 2347 flow [2022-11-21 16:46:53,514 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1557, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=2347, PETRI_PLACES=277, PETRI_TRANSITIONS=258} [2022-11-21 16:46:53,515 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 189 predicate places. [2022-11-21 16:46:53,515 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 258 transitions, 2347 flow [2022-11-21 16:46:53,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:53,515 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:46:53,516 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:46:53,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-11-21 16:46:53,516 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:46:53,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:46:53,517 INFO L85 PathProgramCache]: Analyzing trace with hash -170058180, now seen corresponding path program 42 times [2022-11-21 16:46:53,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:46:53,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818852510] [2022-11-21 16:46:53,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:46:53,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:46:53,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:54,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:46:54,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:46:54,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818852510] [2022-11-21 16:46:54,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818852510] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:46:54,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:46:54,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:46:54,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734268476] [2022-11-21 16:46:54,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:46:54,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:46:54,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:46:54,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:46:54,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:46:54,015 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:46:54,016 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 258 transitions, 2347 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:54,016 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:46:54,016 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:46:54,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:46:55,479 INFO L130 PetriNetUnfolder]: 296/817 cut-off events. [2022-11-21 16:46:55,479 INFO L131 PetriNetUnfolder]: For 7313/7313 co-relation queries the response was YES. [2022-11-21 16:46:55,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4772 conditions, 817 events. 296/817 cut-off events. For 7313/7313 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 4149 event pairs, 56 based on Foata normal form. 1/816 useless extension candidates. Maximal degree in co-relation 4687. Up to 527 conditions per place. [2022-11-21 16:46:55,486 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 166 selfloop transitions, 79 changer transitions 36/320 dead transitions. [2022-11-21 16:46:55,486 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 320 transitions, 3625 flow [2022-11-21 16:46:55,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-21 16:46:55,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-21 16:46:55,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1813 transitions. [2022-11-21 16:46:55,488 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5672715894868585 [2022-11-21 16:46:55,488 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1813 transitions. [2022-11-21 16:46:55,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1813 transitions. [2022-11-21 16:46:55,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:46:55,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1813 transitions. [2022-11-21 16:46:55,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.3235294117647) internal successors, (1813), 34 states have internal predecessors, (1813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:55,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:55,494 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:55,494 INFO L175 Difference]: Start difference. First operand has 277 places, 258 transitions, 2347 flow. Second operand 34 states and 1813 transitions. [2022-11-21 16:46:55,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 320 transitions, 3625 flow [2022-11-21 16:46:55,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 320 transitions, 3143 flow, removed 204 selfloop flow, removed 17 redundant places. [2022-11-21 16:46:55,528 INFO L231 Difference]: Finished difference. Result has 301 places, 268 transitions, 2299 flow [2022-11-21 16:46:55,529 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1901, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=2299, PETRI_PLACES=301, PETRI_TRANSITIONS=268} [2022-11-21 16:46:55,529 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 213 predicate places. [2022-11-21 16:46:55,529 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 268 transitions, 2299 flow [2022-11-21 16:46:55,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:55,530 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:46:55,530 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:46:55,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-11-21 16:46:55,530 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:46:55,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:46:55,531 INFO L85 PathProgramCache]: Analyzing trace with hash -273998376, now seen corresponding path program 43 times [2022-11-21 16:46:55,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:46:55,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963168077] [2022-11-21 16:46:55,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:46:55,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:46:55,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:56,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:46:56,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:46:56,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963168077] [2022-11-21 16:46:56,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963168077] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:46:56,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:46:56,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:46:56,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126619739] [2022-11-21 16:46:56,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:46:56,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:46:56,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:46:56,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:46:56,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:46:56,111 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:46:56,111 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 268 transitions, 2299 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:56,112 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:46:56,112 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:46:56,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:46:57,591 INFO L130 PetriNetUnfolder]: 300/837 cut-off events. [2022-11-21 16:46:57,591 INFO L131 PetriNetUnfolder]: For 8423/8423 co-relation queries the response was YES. [2022-11-21 16:46:57,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4992 conditions, 837 events. 300/837 cut-off events. For 8423/8423 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 4292 event pairs, 53 based on Foata normal form. 1/836 useless extension candidates. Maximal degree in co-relation 4895. Up to 536 conditions per place. [2022-11-21 16:46:57,599 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 161 selfloop transitions, 87 changer transitions 37/324 dead transitions. [2022-11-21 16:46:57,599 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 324 transitions, 3502 flow [2022-11-21 16:46:57,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-21 16:46:57,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-21 16:46:57,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1811 transitions. [2022-11-21 16:46:57,601 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5666458072590739 [2022-11-21 16:46:57,601 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1811 transitions. [2022-11-21 16:46:57,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1811 transitions. [2022-11-21 16:46:57,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:46:57,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1811 transitions. [2022-11-21 16:46:57,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.26470588235294) internal successors, (1811), 34 states have internal predecessors, (1811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:57,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:57,605 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:57,605 INFO L175 Difference]: Start difference. First operand has 301 places, 268 transitions, 2299 flow. Second operand 34 states and 1811 transitions. [2022-11-21 16:46:57,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 324 transitions, 3502 flow [2022-11-21 16:46:57,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 324 transitions, 3163 flow, removed 117 selfloop flow, removed 27 redundant places. [2022-11-21 16:46:57,639 INFO L231 Difference]: Finished difference. Result has 310 places, 275 transitions, 2407 flow [2022-11-21 16:46:57,640 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2057, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=2407, PETRI_PLACES=310, PETRI_TRANSITIONS=275} [2022-11-21 16:46:57,640 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 222 predicate places. [2022-11-21 16:46:57,640 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 275 transitions, 2407 flow [2022-11-21 16:46:57,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:57,640 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:46:57,641 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:46:57,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-11-21 16:46:57,641 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:46:57,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:46:57,641 INFO L85 PathProgramCache]: Analyzing trace with hash -327641696, now seen corresponding path program 44 times [2022-11-21 16:46:57,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:46:57,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954651752] [2022-11-21 16:46:57,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:46:57,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:46:57,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:58,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:46:58,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:46:58,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954651752] [2022-11-21 16:46:58,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954651752] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:46:58,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:46:58,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:46:58,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488338747] [2022-11-21 16:46:58,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:46:58,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:46:58,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:46:58,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:46:58,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:46:58,125 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:46:58,126 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 275 transitions, 2407 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:58,126 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:46:58,127 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:46:58,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:46:59,610 INFO L130 PetriNetUnfolder]: 307/857 cut-off events. [2022-11-21 16:46:59,611 INFO L131 PetriNetUnfolder]: For 9064/9064 co-relation queries the response was YES. [2022-11-21 16:46:59,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5240 conditions, 857 events. 307/857 cut-off events. For 9064/9064 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 4448 event pairs, 56 based on Foata normal form. 1/856 useless extension candidates. Maximal degree in co-relation 5139. Up to 536 conditions per place. [2022-11-21 16:46:59,624 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 170 selfloop transitions, 95 changer transitions 40/344 dead transitions. [2022-11-21 16:46:59,624 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 344 transitions, 3809 flow [2022-11-21 16:46:59,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-21 16:46:59,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-21 16:46:59,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1659 transitions. [2022-11-21 16:46:59,627 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5693205216197667 [2022-11-21 16:46:59,627 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1659 transitions. [2022-11-21 16:46:59,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1659 transitions. [2022-11-21 16:46:59,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:46:59,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1659 transitions. [2022-11-21 16:46:59,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 53.516129032258064) internal successors, (1659), 31 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:59,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:59,632 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:59,632 INFO L175 Difference]: Start difference. First operand has 310 places, 275 transitions, 2407 flow. Second operand 31 states and 1659 transitions. [2022-11-21 16:46:59,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 344 transitions, 3809 flow [2022-11-21 16:46:59,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 344 transitions, 3497 flow, removed 101 selfloop flow, removed 29 redundant places. [2022-11-21 16:46:59,677 INFO L231 Difference]: Finished difference. Result has 316 places, 287 transitions, 2695 flow [2022-11-21 16:46:59,677 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2219, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=2695, PETRI_PLACES=316, PETRI_TRANSITIONS=287} [2022-11-21 16:46:59,678 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 228 predicate places. [2022-11-21 16:46:59,678 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 287 transitions, 2695 flow [2022-11-21 16:46:59,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:59,678 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:46:59,678 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:46:59,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-11-21 16:46:59,678 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:46:59,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:46:59,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1872896644, now seen corresponding path program 45 times [2022-11-21 16:46:59,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:46:59,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540340881] [2022-11-21 16:46:59,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:46:59,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:46:59,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:00,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:47:00,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:47:00,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540340881] [2022-11-21 16:47:00,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540340881] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:47:00,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:47:00,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:47:00,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703952158] [2022-11-21 16:47:00,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:47:00,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:47:00,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:47:00,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:47:00,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:47:00,232 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:47:00,233 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 287 transitions, 2695 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:00,233 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:47:00,233 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:47:00,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:47:01,980 INFO L130 PetriNetUnfolder]: 305/862 cut-off events. [2022-11-21 16:47:01,981 INFO L131 PetriNetUnfolder]: For 9634/9634 co-relation queries the response was YES. [2022-11-21 16:47:01,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5398 conditions, 862 events. 305/862 cut-off events. For 9634/9634 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 4545 event pairs, 52 based on Foata normal form. 1/861 useless extension candidates. Maximal degree in co-relation 5294. Up to 544 conditions per place. [2022-11-21 16:47:01,996 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 162 selfloop transitions, 101 changer transitions 37/339 dead transitions. [2022-11-21 16:47:01,996 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 339 transitions, 3866 flow [2022-11-21 16:47:01,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-21 16:47:01,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-21 16:47:01,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1909 transitions. [2022-11-21 16:47:01,999 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5641252955082743 [2022-11-21 16:47:01,999 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1909 transitions. [2022-11-21 16:47:01,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1909 transitions. [2022-11-21 16:47:02,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:47:02,000 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1909 transitions. [2022-11-21 16:47:02,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 53.02777777777778) internal successors, (1909), 36 states have internal predecessors, (1909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:02,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:02,003 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:02,003 INFO L175 Difference]: Start difference. First operand has 316 places, 287 transitions, 2695 flow. Second operand 36 states and 1909 transitions. [2022-11-21 16:47:02,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 339 transitions, 3866 flow [2022-11-21 16:47:02,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 339 transitions, 3627 flow, removed 72 selfloop flow, removed 27 redundant places. [2022-11-21 16:47:02,050 INFO L231 Difference]: Finished difference. Result has 326 places, 290 transitions, 2850 flow [2022-11-21 16:47:02,051 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2512, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=2850, PETRI_PLACES=326, PETRI_TRANSITIONS=290} [2022-11-21 16:47:02,051 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 238 predicate places. [2022-11-21 16:47:02,052 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 290 transitions, 2850 flow [2022-11-21 16:47:02,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:02,052 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:47:02,052 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:47:02,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-11-21 16:47:02,053 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:47:02,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:47:02,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1738087850, now seen corresponding path program 46 times [2022-11-21 16:47:02,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:47:02,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431448052] [2022-11-21 16:47:02,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:47:02,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:47:02,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:02,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:47:02,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:47:02,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431448052] [2022-11-21 16:47:02,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431448052] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:47:02,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:47:02,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:47:02,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219339350] [2022-11-21 16:47:02,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:47:02,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:47:02,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:47:02,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:47:02,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:47:02,653 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:47:02,654 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 290 transitions, 2850 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:02,654 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:47:02,654 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:47:02,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:47:04,095 INFO L130 PetriNetUnfolder]: 305/861 cut-off events. [2022-11-21 16:47:04,095 INFO L131 PetriNetUnfolder]: For 9789/9789 co-relation queries the response was YES. [2022-11-21 16:47:04,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5512 conditions, 861 events. 305/861 cut-off events. For 9789/9789 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4518 event pairs, 57 based on Foata normal form. 1/860 useless extension candidates. Maximal degree in co-relation 5405. Up to 557 conditions per place. [2022-11-21 16:47:04,110 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 174 selfloop transitions, 89 changer transitions 38/340 dead transitions. [2022-11-21 16:47:04,111 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 340 transitions, 3979 flow [2022-11-21 16:47:04,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-21 16:47:04,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-21 16:47:04,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1858 transitions. [2022-11-21 16:47:04,113 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.564741641337386 [2022-11-21 16:47:04,113 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1858 transitions. [2022-11-21 16:47:04,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1858 transitions. [2022-11-21 16:47:04,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:47:04,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1858 transitions. [2022-11-21 16:47:04,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 53.08571428571429) internal successors, (1858), 35 states have internal predecessors, (1858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:04,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:04,119 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:04,119 INFO L175 Difference]: Start difference. First operand has 326 places, 290 transitions, 2850 flow. Second operand 35 states and 1858 transitions. [2022-11-21 16:47:04,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 340 transitions, 3979 flow [2022-11-21 16:47:04,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 340 transitions, 3730 flow, removed 53 selfloop flow, removed 33 redundant places. [2022-11-21 16:47:04,186 INFO L231 Difference]: Finished difference. Result has 331 places, 290 transitions, 2905 flow [2022-11-21 16:47:04,186 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2647, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=2905, PETRI_PLACES=331, PETRI_TRANSITIONS=290} [2022-11-21 16:47:04,187 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 243 predicate places. [2022-11-21 16:47:04,187 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 290 transitions, 2905 flow [2022-11-21 16:47:04,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:04,188 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:47:04,188 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:47:04,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-11-21 16:47:04,188 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:47:04,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:47:04,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1371800656, now seen corresponding path program 47 times [2022-11-21 16:47:04,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:47:04,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076382878] [2022-11-21 16:47:04,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:47:04,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:47:04,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:04,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:47:04,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:47:04,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076382878] [2022-11-21 16:47:04,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076382878] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:47:04,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:47:04,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:47:04,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750162562] [2022-11-21 16:47:04,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:47:04,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:47:04,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:47:04,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:47:04,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:47:04,731 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:47:04,732 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 290 transitions, 2905 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:04,732 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:47:04,732 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:47:04,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:47:06,508 INFO L130 PetriNetUnfolder]: 306/842 cut-off events. [2022-11-21 16:47:06,508 INFO L131 PetriNetUnfolder]: For 9877/9877 co-relation queries the response was YES. [2022-11-21 16:47:06,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5600 conditions, 842 events. 306/842 cut-off events. For 9877/9877 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4375 event pairs, 58 based on Foata normal form. 1/841 useless extension candidates. Maximal degree in co-relation 5491. Up to 555 conditions per place. [2022-11-21 16:47:06,516 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 170 selfloop transitions, 100 changer transitions 34/343 dead transitions. [2022-11-21 16:47:06,517 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 343 transitions, 4161 flow [2022-11-21 16:47:06,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-21 16:47:06,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-21 16:47:06,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2009 transitions. [2022-11-21 16:47:06,519 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5624300111982082 [2022-11-21 16:47:06,519 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2009 transitions. [2022-11-21 16:47:06,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2009 transitions. [2022-11-21 16:47:06,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:47:06,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2009 transitions. [2022-11-21 16:47:06,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 52.86842105263158) internal successors, (2009), 38 states have internal predecessors, (2009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:06,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:06,523 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:06,523 INFO L175 Difference]: Start difference. First operand has 331 places, 290 transitions, 2905 flow. Second operand 38 states and 2009 transitions. [2022-11-21 16:47:06,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 343 transitions, 4161 flow [2022-11-21 16:47:06,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 343 transitions, 3859 flow, removed 77 selfloop flow, removed 30 redundant places. [2022-11-21 16:47:06,573 INFO L231 Difference]: Finished difference. Result has 342 places, 296 transitions, 3111 flow [2022-11-21 16:47:06,573 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2675, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=3111, PETRI_PLACES=342, PETRI_TRANSITIONS=296} [2022-11-21 16:47:06,574 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 254 predicate places. [2022-11-21 16:47:06,574 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 296 transitions, 3111 flow [2022-11-21 16:47:06,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:06,574 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:47:06,574 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:47:06,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-11-21 16:47:06,574 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:47:06,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:47:06,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1767480892, now seen corresponding path program 48 times [2022-11-21 16:47:06,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:47:06,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681942773] [2022-11-21 16:47:06,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:47:06,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:47:06,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:07,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:47:07,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:47:07,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681942773] [2022-11-21 16:47:07,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681942773] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:47:07,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:47:07,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:47:07,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790204189] [2022-11-21 16:47:07,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:47:07,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:47:07,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:47:07,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:47:07,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:47:07,089 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:47:07,089 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 296 transitions, 3111 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:07,089 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:47:07,090 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:47:07,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:47:08,641 INFO L130 PetriNetUnfolder]: 298/851 cut-off events. [2022-11-21 16:47:08,641 INFO L131 PetriNetUnfolder]: For 9827/9827 co-relation queries the response was YES. [2022-11-21 16:47:08,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5600 conditions, 851 events. 298/851 cut-off events. For 9827/9827 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4464 event pairs, 59 based on Foata normal form. 1/850 useless extension candidates. Maximal degree in co-relation 5486. Up to 555 conditions per place. [2022-11-21 16:47:08,658 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 170 selfloop transitions, 90 changer transitions 36/335 dead transitions. [2022-11-21 16:47:08,659 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 335 transitions, 4067 flow [2022-11-21 16:47:08,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-21 16:47:08,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-21 16:47:08,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1855 transitions. [2022-11-21 16:47:08,661 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5638297872340425 [2022-11-21 16:47:08,662 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1855 transitions. [2022-11-21 16:47:08,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1855 transitions. [2022-11-21 16:47:08,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:47:08,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1855 transitions. [2022-11-21 16:47:08,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 53.0) internal successors, (1855), 35 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:08,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:08,668 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:08,668 INFO L175 Difference]: Start difference. First operand has 342 places, 296 transitions, 3111 flow. Second operand 35 states and 1855 transitions. [2022-11-21 16:47:08,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 335 transitions, 4067 flow [2022-11-21 16:47:08,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 335 transitions, 3702 flow, removed 101 selfloop flow, removed 31 redundant places. [2022-11-21 16:47:08,752 INFO L231 Difference]: Finished difference. Result has 345 places, 288 transitions, 2966 flow [2022-11-21 16:47:08,753 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2790, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=2966, PETRI_PLACES=345, PETRI_TRANSITIONS=288} [2022-11-21 16:47:08,753 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 257 predicate places. [2022-11-21 16:47:08,753 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 288 transitions, 2966 flow [2022-11-21 16:47:08,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:08,754 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:47:08,754 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:47:08,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-11-21 16:47:08,754 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:47:08,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:47:08,755 INFO L85 PathProgramCache]: Analyzing trace with hash 960424702, now seen corresponding path program 49 times [2022-11-21 16:47:08,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:47:08,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562637347] [2022-11-21 16:47:08,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:47:08,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:47:08,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:09,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:47:09,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:47:09,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562637347] [2022-11-21 16:47:09,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562637347] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:47:09,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:47:09,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-21 16:47:09,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57068792] [2022-11-21 16:47:09,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:47:09,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-21 16:47:09,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:47:09,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-21 16:47:09,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-11-21 16:47:09,310 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:47:09,311 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 288 transitions, 2966 flow. Second operand has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:09,312 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:47:09,312 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:47:09,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:47:11,065 INFO L130 PetriNetUnfolder]: 300/863 cut-off events. [2022-11-21 16:47:11,065 INFO L131 PetriNetUnfolder]: For 9796/9796 co-relation queries the response was YES. [2022-11-21 16:47:11,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5613 conditions, 863 events. 300/863 cut-off events. For 9796/9796 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4553 event pairs, 50 based on Foata normal form. 1/862 useless extension candidates. Maximal degree in co-relation 5498. Up to 560 conditions per place. [2022-11-21 16:47:11,076 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 187 selfloop transitions, 86 changer transitions 30/342 dead transitions. [2022-11-21 16:47:11,076 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 342 transitions, 4187 flow [2022-11-21 16:47:11,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-21 16:47:11,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-21 16:47:11,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1814 transitions. [2022-11-21 16:47:11,079 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.567584480600751 [2022-11-21 16:47:11,079 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1814 transitions. [2022-11-21 16:47:11,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1814 transitions. [2022-11-21 16:47:11,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:47:11,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1814 transitions. [2022-11-21 16:47:11,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.35294117647059) internal successors, (1814), 34 states have internal predecessors, (1814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:11,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:11,083 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:11,083 INFO L175 Difference]: Start difference. First operand has 345 places, 288 transitions, 2966 flow. Second operand 34 states and 1814 transitions. [2022-11-21 16:47:11,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 342 transitions, 4187 flow [2022-11-21 16:47:11,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 342 transitions, 3843 flow, removed 38 selfloop flow, removed 38 redundant places. [2022-11-21 16:47:11,187 INFO L231 Difference]: Finished difference. Result has 337 places, 296 transitions, 3029 flow [2022-11-21 16:47:11,187 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2670, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=3029, PETRI_PLACES=337, PETRI_TRANSITIONS=296} [2022-11-21 16:47:11,188 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 249 predicate places. [2022-11-21 16:47:11,188 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 296 transitions, 3029 flow [2022-11-21 16:47:11,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:11,188 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:47:11,188 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:47:11,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-11-21 16:47:11,188 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:47:11,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:47:11,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1694596224, now seen corresponding path program 50 times [2022-11-21 16:47:11,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:47:11,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730364004] [2022-11-21 16:47:11,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:47:11,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:47:11,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:11,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:47:11,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:47:11,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730364004] [2022-11-21 16:47:11,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730364004] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:47:11,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:47:11,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:47:11,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989371137] [2022-11-21 16:47:11,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:47:11,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:47:11,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:47:11,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:47:11,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:47:11,823 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:47:11,824 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 296 transitions, 3029 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:11,824 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:47:11,824 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:47:11,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:47:13,594 INFO L130 PetriNetUnfolder]: 306/885 cut-off events. [2022-11-21 16:47:13,594 INFO L131 PetriNetUnfolder]: For 9888/9888 co-relation queries the response was YES. [2022-11-21 16:47:13,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5651 conditions, 885 events. 306/885 cut-off events. For 9888/9888 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 4760 event pairs, 62 based on Foata normal form. 1/884 useless extension candidates. Maximal degree in co-relation 5539. Up to 583 conditions per place. [2022-11-21 16:47:13,604 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 195 selfloop transitions, 85 changer transitions 34/353 dead transitions. [2022-11-21 16:47:13,604 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 353 transitions, 4236 flow [2022-11-21 16:47:13,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-21 16:47:13,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-21 16:47:13,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1910 transitions. [2022-11-21 16:47:13,607 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5644208037825059 [2022-11-21 16:47:13,608 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1910 transitions. [2022-11-21 16:47:13,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1910 transitions. [2022-11-21 16:47:13,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:47:13,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1910 transitions. [2022-11-21 16:47:13,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 53.05555555555556) internal successors, (1910), 36 states have internal predecessors, (1910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:13,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:13,612 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:13,612 INFO L175 Difference]: Start difference. First operand has 337 places, 296 transitions, 3029 flow. Second operand 36 states and 1910 transitions. [2022-11-21 16:47:13,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 353 transitions, 4236 flow [2022-11-21 16:47:13,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 353 transitions, 3925 flow, removed 84 selfloop flow, removed 31 redundant places. [2022-11-21 16:47:13,678 INFO L231 Difference]: Finished difference. Result has 348 places, 306 transitions, 3145 flow [2022-11-21 16:47:13,679 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2786, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=3145, PETRI_PLACES=348, PETRI_TRANSITIONS=306} [2022-11-21 16:47:13,679 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 260 predicate places. [2022-11-21 16:47:13,679 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 306 transitions, 3145 flow [2022-11-21 16:47:13,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:13,679 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:47:13,680 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:47:13,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-11-21 16:47:13,680 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:47:13,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:47:13,680 INFO L85 PathProgramCache]: Analyzing trace with hash -2087787960, now seen corresponding path program 51 times [2022-11-21 16:47:13,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:47:13,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155047492] [2022-11-21 16:47:13,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:47:13,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:47:13,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:14,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:47:14,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:47:14,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155047492] [2022-11-21 16:47:14,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155047492] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:47:14,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:47:14,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-21 16:47:14,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389477374] [2022-11-21 16:47:14,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:47:14,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-21 16:47:14,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:47:14,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-21 16:47:14,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-21 16:47:14,395 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:47:14,396 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 306 transitions, 3145 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:14,396 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:47:14,396 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:47:14,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:47:16,954 INFO L130 PetriNetUnfolder]: 348/998 cut-off events. [2022-11-21 16:47:16,954 INFO L131 PetriNetUnfolder]: For 11542/11542 co-relation queries the response was YES. [2022-11-21 16:47:16,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6391 conditions, 998 events. 348/998 cut-off events. For 11542/11542 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 5516 event pairs, 36 based on Foata normal form. 1/997 useless extension candidates. Maximal degree in co-relation 6275. Up to 612 conditions per place. [2022-11-21 16:47:16,970 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 216 selfloop transitions, 155 changer transitions 22/432 dead transitions. [2022-11-21 16:47:16,970 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 432 transitions, 5466 flow [2022-11-21 16:47:16,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-11-21 16:47:16,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2022-11-21 16:47:16,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 2728 transitions. [2022-11-21 16:47:16,974 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.55810147299509 [2022-11-21 16:47:16,974 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 2728 transitions. [2022-11-21 16:47:16,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 2728 transitions. [2022-11-21 16:47:16,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:47:16,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 2728 transitions. [2022-11-21 16:47:16,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 52.46153846153846) internal successors, (2728), 52 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:16,979 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 94.0) internal successors, (4982), 53 states have internal predecessors, (4982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:16,979 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 94.0) internal successors, (4982), 53 states have internal predecessors, (4982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:16,980 INFO L175 Difference]: Start difference. First operand has 348 places, 306 transitions, 3145 flow. Second operand 52 states and 2728 transitions. [2022-11-21 16:47:16,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 432 transitions, 5466 flow [2022-11-21 16:47:17,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 432 transitions, 5210 flow, removed 73 selfloop flow, removed 28 redundant places. [2022-11-21 16:47:17,051 INFO L231 Difference]: Finished difference. Result has 381 places, 389 transitions, 4519 flow [2022-11-21 16:47:17,052 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2970, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=4519, PETRI_PLACES=381, PETRI_TRANSITIONS=389} [2022-11-21 16:47:17,052 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 293 predicate places. [2022-11-21 16:47:17,052 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 389 transitions, 4519 flow [2022-11-21 16:47:17,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:17,053 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:47:17,053 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:47:17,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-11-21 16:47:17,053 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:47:17,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:47:17,054 INFO L85 PathProgramCache]: Analyzing trace with hash -478736964, now seen corresponding path program 52 times [2022-11-21 16:47:17,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:47:17,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439192389] [2022-11-21 16:47:17,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:47:17,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:47:17,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:17,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:47:17,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:47:17,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439192389] [2022-11-21 16:47:17,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439192389] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:47:17,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:47:17,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:47:17,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610348527] [2022-11-21 16:47:17,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:47:17,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:47:17,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:47:17,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:47:17,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:47:17,539 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:47:17,540 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 389 transitions, 4519 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:17,540 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:47:17,540 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:47:17,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:47:19,496 INFO L130 PetriNetUnfolder]: 355/1033 cut-off events. [2022-11-21 16:47:19,496 INFO L131 PetriNetUnfolder]: For 13178/13178 co-relation queries the response was YES. [2022-11-21 16:47:19,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6995 conditions, 1033 events. 355/1033 cut-off events. For 13178/13178 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 5925 event pairs, 49 based on Foata normal form. 1/1032 useless extension candidates. Maximal degree in co-relation 6869. Up to 673 conditions per place. [2022-11-21 16:47:19,508 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 265 selfloop transitions, 110 changer transitions 29/443 dead transitions. [2022-11-21 16:47:19,508 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 443 transitions, 5944 flow [2022-11-21 16:47:19,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-21 16:47:19,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-11-21 16:47:19,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 2066 transitions. [2022-11-21 16:47:19,511 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.563557010365521 [2022-11-21 16:47:19,511 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 2066 transitions. [2022-11-21 16:47:19,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 2066 transitions. [2022-11-21 16:47:19,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:47:19,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 2066 transitions. [2022-11-21 16:47:19,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 52.97435897435897) internal successors, (2066), 39 states have internal predecessors, (2066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:19,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 94.0) internal successors, (3760), 40 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:19,517 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 94.0) internal successors, (3760), 40 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:19,517 INFO L175 Difference]: Start difference. First operand has 381 places, 389 transitions, 4519 flow. Second operand 39 states and 2066 transitions. [2022-11-21 16:47:19,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 443 transitions, 5944 flow [2022-11-21 16:47:19,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 443 transitions, 5178 flow, removed 332 selfloop flow, removed 21 redundant places. [2022-11-21 16:47:19,628 INFO L231 Difference]: Finished difference. Result has 402 places, 398 transitions, 4195 flow [2022-11-21 16:47:19,628 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=3777, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=4195, PETRI_PLACES=402, PETRI_TRANSITIONS=398} [2022-11-21 16:47:19,628 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 314 predicate places. [2022-11-21 16:47:19,629 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 398 transitions, 4195 flow [2022-11-21 16:47:19,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:19,629 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:47:19,629 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:47:19,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-11-21 16:47:19,630 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:47:19,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:47:19,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1724597186, now seen corresponding path program 53 times [2022-11-21 16:47:19,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:47:19,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32798326] [2022-11-21 16:47:19,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:47:19,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:47:19,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:20,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:47:20,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:47:20,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32798326] [2022-11-21 16:47:20,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32798326] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:47:20,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:47:20,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:47:20,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741015425] [2022-11-21 16:47:20,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:47:20,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:47:20,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:47:20,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:47:20,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:47:20,286 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:47:20,287 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 398 transitions, 4195 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:20,287 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:47:20,287 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:47:20,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:47:22,657 INFO L130 PetriNetUnfolder]: 390/1139 cut-off events. [2022-11-21 16:47:22,658 INFO L131 PetriNetUnfolder]: For 15081/15081 co-relation queries the response was YES. [2022-11-21 16:47:22,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7552 conditions, 1139 events. 390/1139 cut-off events. For 15081/15081 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 6729 event pairs, 43 based on Foata normal form. 1/1138 useless extension candidates. Maximal degree in co-relation 7420. Up to 658 conditions per place. [2022-11-21 16:47:22,673 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 236 selfloop transitions, 203 changer transitions 23/501 dead transitions. [2022-11-21 16:47:22,674 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 501 transitions, 6622 flow [2022-11-21 16:47:22,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-11-21 16:47:22,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-11-21 16:47:22,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 2426 transitions. [2022-11-21 16:47:22,676 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.561054579093432 [2022-11-21 16:47:22,676 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 2426 transitions. [2022-11-21 16:47:22,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 2426 transitions. [2022-11-21 16:47:22,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:47:22,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 2426 transitions. [2022-11-21 16:47:22,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 52.73913043478261) internal successors, (2426), 46 states have internal predecessors, (2426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:22,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 94.0) internal successors, (4418), 47 states have internal predecessors, (4418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:22,681 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 94.0) internal successors, (4418), 47 states have internal predecessors, (4418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:22,681 INFO L175 Difference]: Start difference. First operand has 402 places, 398 transitions, 4195 flow. Second operand 46 states and 2426 transitions. [2022-11-21 16:47:22,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 501 transitions, 6622 flow [2022-11-21 16:47:22,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 501 transitions, 6257 flow, removed 113 selfloop flow, removed 34 redundant places. [2022-11-21 16:47:22,797 INFO L231 Difference]: Finished difference. Result has 419 places, 452 transitions, 5421 flow [2022-11-21 16:47:22,798 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=3982, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=5421, PETRI_PLACES=419, PETRI_TRANSITIONS=452} [2022-11-21 16:47:22,799 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 331 predicate places. [2022-11-21 16:47:22,799 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 452 transitions, 5421 flow [2022-11-21 16:47:22,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:22,799 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:47:22,800 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:47:22,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-11-21 16:47:22,800 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:47:22,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:47:22,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1113514368, now seen corresponding path program 54 times [2022-11-21 16:47:22,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:47:22,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537459663] [2022-11-21 16:47:22,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:47:22,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:47:22,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:23,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:47:23,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:47:23,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537459663] [2022-11-21 16:47:23,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537459663] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:47:23,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:47:23,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:47:23,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097008850] [2022-11-21 16:47:23,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:47:23,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:47:23,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:47:23,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:47:23,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:47:23,438 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:47:23,438 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 452 transitions, 5421 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:23,438 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:47:23,438 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:47:23,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:47:25,437 INFO L130 PetriNetUnfolder]: 395/1152 cut-off events. [2022-11-21 16:47:25,437 INFO L131 PetriNetUnfolder]: For 17145/17145 co-relation queries the response was YES. [2022-11-21 16:47:25,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8158 conditions, 1152 events. 395/1152 cut-off events. For 17145/17145 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 6870 event pairs, 41 based on Foata normal form. 1/1151 useless extension candidates. Maximal degree in co-relation 8020. Up to 780 conditions per place. [2022-11-21 16:47:25,454 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 327 selfloop transitions, 98 changer transitions 36/500 dead transitions. [2022-11-21 16:47:25,455 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 500 transitions, 6884 flow [2022-11-21 16:47:25,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-21 16:47:25,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-21 16:47:25,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1912 transitions. [2022-11-21 16:47:25,457 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5650118203309693 [2022-11-21 16:47:25,458 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1912 transitions. [2022-11-21 16:47:25,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1912 transitions. [2022-11-21 16:47:25,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:47:25,458 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1912 transitions. [2022-11-21 16:47:25,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 53.111111111111114) internal successors, (1912), 36 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:25,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:25,462 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:25,462 INFO L175 Difference]: Start difference. First operand has 419 places, 452 transitions, 5421 flow. Second operand 36 states and 1912 transitions. [2022-11-21 16:47:25,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 500 transitions, 6884 flow [2022-11-21 16:47:25,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 500 transitions, 6349 flow, removed 202 selfloop flow, removed 28 redundant places. [2022-11-21 16:47:25,621 INFO L231 Difference]: Finished difference. Result has 434 places, 452 transitions, 5213 flow [2022-11-21 16:47:25,622 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=4930, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=5213, PETRI_PLACES=434, PETRI_TRANSITIONS=452} [2022-11-21 16:47:25,622 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 346 predicate places. [2022-11-21 16:47:25,622 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 452 transitions, 5213 flow [2022-11-21 16:47:25,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:25,622 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:47:25,622 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:47:25,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-11-21 16:47:25,623 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:47:25,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:47:25,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1232454236, now seen corresponding path program 55 times [2022-11-21 16:47:25,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:47:25,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772862289] [2022-11-21 16:47:25,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:47:25,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:47:25,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:26,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:47:26,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:47:26,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772862289] [2022-11-21 16:47:26,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772862289] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:47:26,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:47:26,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:47:26,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733629695] [2022-11-21 16:47:26,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:47:26,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:47:26,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:47:26,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:47:26,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:47:26,205 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:47:26,206 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 452 transitions, 5213 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:26,206 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:47:26,206 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:47:26,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:47:28,376 INFO L130 PetriNetUnfolder]: 398/1162 cut-off events. [2022-11-21 16:47:28,376 INFO L131 PetriNetUnfolder]: For 16289/16289 co-relation queries the response was YES. [2022-11-21 16:47:28,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8113 conditions, 1162 events. 398/1162 cut-off events. For 16289/16289 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 7031 event pairs, 39 based on Foata normal form. 1/1161 useless extension candidates. Maximal degree in co-relation 7966. Up to 751 conditions per place. [2022-11-21 16:47:28,392 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 303 selfloop transitions, 141 changer transitions 30/513 dead transitions. [2022-11-21 16:47:28,392 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 513 transitions, 7000 flow [2022-11-21 16:47:28,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-21 16:47:28,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2022-11-21 16:47:28,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 2168 transitions. [2022-11-21 16:47:28,395 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5625324338349766 [2022-11-21 16:47:28,395 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 2168 transitions. [2022-11-21 16:47:28,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 2168 transitions. [2022-11-21 16:47:28,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:47:28,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 2168 transitions. [2022-11-21 16:47:28,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 52.8780487804878) internal successors, (2168), 41 states have internal predecessors, (2168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:28,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 94.0) internal successors, (3948), 42 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:28,401 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 94.0) internal successors, (3948), 42 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:28,401 INFO L175 Difference]: Start difference. First operand has 434 places, 452 transitions, 5213 flow. Second operand 41 states and 2168 transitions. [2022-11-21 16:47:28,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 513 transitions, 7000 flow [2022-11-21 16:47:28,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 513 transitions, 6624 flow, removed 63 selfloop flow, removed 37 redundant places. [2022-11-21 16:47:28,537 INFO L231 Difference]: Finished difference. Result has 438 places, 465 transitions, 5536 flow [2022-11-21 16:47:28,538 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=4899, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=5536, PETRI_PLACES=438, PETRI_TRANSITIONS=465} [2022-11-21 16:47:28,538 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 350 predicate places. [2022-11-21 16:47:28,538 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 465 transitions, 5536 flow [2022-11-21 16:47:28,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:28,539 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:47:28,539 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:47:28,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-11-21 16:47:28,539 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:47:28,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:47:28,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1955632098, now seen corresponding path program 56 times [2022-11-21 16:47:28,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:47:28,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536293874] [2022-11-21 16:47:28,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:47:28,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:47:28,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:29,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:47:29,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:47:29,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536293874] [2022-11-21 16:47:29,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536293874] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:47:29,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:47:29,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:47:29,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019624176] [2022-11-21 16:47:29,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:47:29,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:47:29,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:47:29,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:47:29,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:47:29,124 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:47:29,125 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 465 transitions, 5536 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:29,125 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:47:29,125 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:47:29,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:47:31,486 INFO L130 PetriNetUnfolder]: 396/1162 cut-off events. [2022-11-21 16:47:31,486 INFO L131 PetriNetUnfolder]: For 15161/15161 co-relation queries the response was YES. [2022-11-21 16:47:31,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8061 conditions, 1162 events. 396/1162 cut-off events. For 15161/15161 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 7060 event pairs, 46 based on Foata normal form. 1/1161 useless extension candidates. Maximal degree in co-relation 7918. Up to 756 conditions per place. [2022-11-21 16:47:31,505 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 308 selfloop transitions, 128 changer transitions 36/511 dead transitions. [2022-11-21 16:47:31,505 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 511 transitions, 7017 flow [2022-11-21 16:47:31,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-21 16:47:31,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-11-21 16:47:31,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 2316 transitions. [2022-11-21 16:47:31,508 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5599613152804642 [2022-11-21 16:47:31,508 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 2316 transitions. [2022-11-21 16:47:31,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 2316 transitions. [2022-11-21 16:47:31,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:47:31,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 2316 transitions. [2022-11-21 16:47:31,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 52.63636363636363) internal successors, (2316), 44 states have internal predecessors, (2316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:31,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 94.0) internal successors, (4230), 45 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:31,517 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 94.0) internal successors, (4230), 45 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:31,517 INFO L175 Difference]: Start difference. First operand has 438 places, 465 transitions, 5536 flow. Second operand 44 states and 2316 transitions. [2022-11-21 16:47:31,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 511 transitions, 7017 flow [2022-11-21 16:47:31,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 511 transitions, 6694 flow, removed 90 selfloop flow, removed 34 redundant places. [2022-11-21 16:47:31,769 INFO L231 Difference]: Finished difference. Result has 453 places, 464 transitions, 5620 flow [2022-11-21 16:47:31,770 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=5263, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=465, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=5620, PETRI_PLACES=453, PETRI_TRANSITIONS=464} [2022-11-21 16:47:31,771 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 365 predicate places. [2022-11-21 16:47:31,771 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 464 transitions, 5620 flow [2022-11-21 16:47:31,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:31,771 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:47:31,772 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:47:31,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-11-21 16:47:31,772 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:47:31,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:47:31,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1157197320, now seen corresponding path program 57 times [2022-11-21 16:47:31,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:47:31,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126207737] [2022-11-21 16:47:31,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:47:31,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:47:31,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:32,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:47:32,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:47:32,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126207737] [2022-11-21 16:47:32,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126207737] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:47:32,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:47:32,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:47:32,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455066923] [2022-11-21 16:47:32,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:47:32,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:47:32,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:47:32,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:47:32,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:47:32,457 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:47:32,458 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 464 transitions, 5620 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:32,458 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:47:32,458 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:47:32,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:47:34,328 INFO L130 PetriNetUnfolder]: 392/1160 cut-off events. [2022-11-21 16:47:34,329 INFO L131 PetriNetUnfolder]: For 14657/14657 co-relation queries the response was YES. [2022-11-21 16:47:34,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8117 conditions, 1160 events. 392/1160 cut-off events. For 14657/14657 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 7002 event pairs, 43 based on Foata normal form. 1/1159 useless extension candidates. Maximal degree in co-relation 7967. Up to 782 conditions per place. [2022-11-21 16:47:34,343 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 335 selfloop transitions, 108 changer transitions 27/509 dead transitions. [2022-11-21 16:47:34,343 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 509 transitions, 7124 flow [2022-11-21 16:47:34,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-21 16:47:34,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-21 16:47:34,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1859 transitions. [2022-11-21 16:47:34,346 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5650455927051672 [2022-11-21 16:47:34,346 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1859 transitions. [2022-11-21 16:47:34,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1859 transitions. [2022-11-21 16:47:34,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:47:34,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1859 transitions. [2022-11-21 16:47:34,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 53.114285714285714) internal successors, (1859), 35 states have internal predecessors, (1859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:34,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:34,351 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:34,351 INFO L175 Difference]: Start difference. First operand has 453 places, 464 transitions, 5620 flow. Second operand 35 states and 1859 transitions. [2022-11-21 16:47:34,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 509 transitions, 7124 flow [2022-11-21 16:47:34,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 509 transitions, 6731 flow, removed 46 selfloop flow, removed 41 redundant places. [2022-11-21 16:47:34,475 INFO L231 Difference]: Finished difference. Result has 445 places, 467 transitions, 5625 flow [2022-11-21 16:47:34,475 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=5269, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=5625, PETRI_PLACES=445, PETRI_TRANSITIONS=467} [2022-11-21 16:47:34,475 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 357 predicate places. [2022-11-21 16:47:34,475 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 467 transitions, 5625 flow [2022-11-21 16:47:34,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:34,476 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:47:34,476 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:47:34,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-11-21 16:47:34,476 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:47:34,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:47:34,477 INFO L85 PathProgramCache]: Analyzing trace with hash -519573206, now seen corresponding path program 58 times [2022-11-21 16:47:34,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:47:34,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41572977] [2022-11-21 16:47:34,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:47:34,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:47:34,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:35,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:47:35,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:47:35,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41572977] [2022-11-21 16:47:35,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41572977] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:47:35,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:47:35,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:47:35,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684481542] [2022-11-21 16:47:35,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:47:35,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:47:35,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:47:35,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:47:35,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:47:35,098 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:47:35,099 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 467 transitions, 5625 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:35,099 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:47:35,099 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:47:35,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:47:36,782 INFO L130 PetriNetUnfolder]: 399/1173 cut-off events. [2022-11-21 16:47:36,783 INFO L131 PetriNetUnfolder]: For 15695/15695 co-relation queries the response was YES. [2022-11-21 16:47:36,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8261 conditions, 1173 events. 399/1173 cut-off events. For 15695/15695 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 7095 event pairs, 54 based on Foata normal form. 1/1172 useless extension candidates. Maximal degree in co-relation 8112. Up to 784 conditions per place. [2022-11-21 16:47:36,802 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 349 selfloop transitions, 103 changer transitions 29/520 dead transitions. [2022-11-21 16:47:36,803 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 520 transitions, 7417 flow [2022-11-21 16:47:36,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-21 16:47:36,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-21 16:47:36,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1812 transitions. [2022-11-21 16:47:36,805 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5669586983729662 [2022-11-21 16:47:36,805 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1812 transitions. [2022-11-21 16:47:36,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1812 transitions. [2022-11-21 16:47:36,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:47:36,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1812 transitions. [2022-11-21 16:47:36,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.294117647058826) internal successors, (1812), 34 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:36,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:36,809 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:36,809 INFO L175 Difference]: Start difference. First operand has 445 places, 467 transitions, 5625 flow. Second operand 34 states and 1812 transitions. [2022-11-21 16:47:36,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 520 transitions, 7417 flow [2022-11-21 16:47:36,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 520 transitions, 7167 flow, removed 50 selfloop flow, removed 31 redundant places. [2022-11-21 16:47:36,943 INFO L231 Difference]: Finished difference. Result has 451 places, 478 transitions, 5939 flow [2022-11-21 16:47:36,944 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=5411, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=5939, PETRI_PLACES=451, PETRI_TRANSITIONS=478} [2022-11-21 16:47:36,945 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 363 predicate places. [2022-11-21 16:47:36,945 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 478 transitions, 5939 flow [2022-11-21 16:47:36,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:36,945 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:47:36,945 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:47:36,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-11-21 16:47:36,946 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:47:36,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:47:36,946 INFO L85 PathProgramCache]: Analyzing trace with hash 32107294, now seen corresponding path program 59 times [2022-11-21 16:47:36,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:47:36,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210772840] [2022-11-21 16:47:36,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:47:36,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:47:36,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:37,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:47:37,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:47:37,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210772840] [2022-11-21 16:47:37,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210772840] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:47:37,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:47:37,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:47:37,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063617321] [2022-11-21 16:47:37,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:47:37,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:47:37,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:47:37,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:47:37,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:47:37,650 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:47:37,651 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 478 transitions, 5939 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:37,651 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:47:37,651 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:47:37,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:47:39,890 INFO L130 PetriNetUnfolder]: 400/1173 cut-off events. [2022-11-21 16:47:39,890 INFO L131 PetriNetUnfolder]: For 17591/17591 co-relation queries the response was YES. [2022-11-21 16:47:39,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8497 conditions, 1173 events. 400/1173 cut-off events. For 17591/17591 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 7102 event pairs, 41 based on Foata normal form. 1/1172 useless extension candidates. Maximal degree in co-relation 8345. Up to 760 conditions per place. [2022-11-21 16:47:39,909 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 308 selfloop transitions, 150 changer transitions 27/524 dead transitions. [2022-11-21 16:47:39,909 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 524 transitions, 7540 flow [2022-11-21 16:47:39,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-21 16:47:39,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-11-21 16:47:39,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 2264 transitions. [2022-11-21 16:47:39,912 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5601187530925285 [2022-11-21 16:47:39,912 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 2264 transitions. [2022-11-21 16:47:39,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 2264 transitions. [2022-11-21 16:47:39,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:47:39,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 2264 transitions. [2022-11-21 16:47:39,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 52.651162790697676) internal successors, (2264), 43 states have internal predecessors, (2264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:39,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 94.0) internal successors, (4136), 44 states have internal predecessors, (4136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:39,917 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 94.0) internal successors, (4136), 44 states have internal predecessors, (4136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:39,917 INFO L175 Difference]: Start difference. First operand has 451 places, 478 transitions, 5939 flow. Second operand 43 states and 2264 transitions. [2022-11-21 16:47:39,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 524 transitions, 7540 flow [2022-11-21 16:47:40,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 524 transitions, 7101 flow, removed 136 selfloop flow, removed 28 redundant places. [2022-11-21 16:47:40,075 INFO L231 Difference]: Finished difference. Result has 467 places, 481 transitions, 6029 flow [2022-11-21 16:47:40,075 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=5562, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=478, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=6029, PETRI_PLACES=467, PETRI_TRANSITIONS=481} [2022-11-21 16:47:40,076 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 379 predicate places. [2022-11-21 16:47:40,076 INFO L495 AbstractCegarLoop]: Abstraction has has 467 places, 481 transitions, 6029 flow [2022-11-21 16:47:40,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:40,076 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:47:40,076 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:47:40,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-11-21 16:47:40,076 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:47:40,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:47:40,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1948725806, now seen corresponding path program 60 times [2022-11-21 16:47:40,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:47:40,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674567067] [2022-11-21 16:47:40,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:47:40,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:47:40,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:40,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:47:40,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:47:40,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674567067] [2022-11-21 16:47:40,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674567067] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:47:40,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:47:40,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-21 16:47:40,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921972294] [2022-11-21 16:47:40,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:47:40,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-21 16:47:40,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:47:40,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-21 16:47:40,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-11-21 16:47:40,622 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:47:40,622 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 481 transitions, 6029 flow. Second operand has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:40,622 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:47:40,623 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:47:40,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:47:42,247 INFO L130 PetriNetUnfolder]: 403/1183 cut-off events. [2022-11-21 16:47:42,247 INFO L131 PetriNetUnfolder]: For 17161/17161 co-relation queries the response was YES. [2022-11-21 16:47:42,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8608 conditions, 1183 events. 403/1183 cut-off events. For 17161/17161 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 7199 event pairs, 49 based on Foata normal form. 1/1182 useless extension candidates. Maximal degree in co-relation 8454. Up to 807 conditions per place. [2022-11-21 16:47:42,266 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 358 selfloop transitions, 102 changer transitions 27/526 dead transitions. [2022-11-21 16:47:42,266 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 491 places, 526 transitions, 7649 flow [2022-11-21 16:47:42,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-21 16:47:42,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-21 16:47:42,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1707 transitions. [2022-11-21 16:47:42,268 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5674867021276596 [2022-11-21 16:47:42,268 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1707 transitions. [2022-11-21 16:47:42,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1707 transitions. [2022-11-21 16:47:42,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:47:42,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1707 transitions. [2022-11-21 16:47:42,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 53.34375) internal successors, (1707), 32 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:42,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:42,275 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:42,275 INFO L175 Difference]: Start difference. First operand has 467 places, 481 transitions, 6029 flow. Second operand 32 states and 1707 transitions. [2022-11-21 16:47:42,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 491 places, 526 transitions, 7649 flow [2022-11-21 16:47:42,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 526 transitions, 7323 flow, removed 61 selfloop flow, removed 39 redundant places. [2022-11-21 16:47:42,530 INFO L231 Difference]: Finished difference. Result has 462 places, 488 transitions, 6190 flow [2022-11-21 16:47:42,531 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=5759, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=6190, PETRI_PLACES=462, PETRI_TRANSITIONS=488} [2022-11-21 16:47:42,531 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 374 predicate places. [2022-11-21 16:47:42,531 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 488 transitions, 6190 flow [2022-11-21 16:47:42,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:42,532 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:47:42,532 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:47:42,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-11-21 16:47:42,532 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:47:42,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:47:42,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1516929996, now seen corresponding path program 61 times [2022-11-21 16:47:42,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:47:42,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952498693] [2022-11-21 16:47:42,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:47:42,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:47:42,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:43,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:47:43,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:47:43,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952498693] [2022-11-21 16:47:43,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952498693] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:47:43,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:47:43,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:47:43,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073056370] [2022-11-21 16:47:43,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:47:43,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:47:43,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:47:43,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:47:43,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:47:43,226 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:47:43,227 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 488 transitions, 6190 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:43,227 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:47:43,227 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:47:43,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:47:44,971 INFO L130 PetriNetUnfolder]: 404/1196 cut-off events. [2022-11-21 16:47:44,971 INFO L131 PetriNetUnfolder]: For 17786/17786 co-relation queries the response was YES. [2022-11-21 16:47:44,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8704 conditions, 1196 events. 404/1196 cut-off events. For 17786/17786 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 7325 event pairs, 50 based on Foata normal form. 1/1195 useless extension candidates. Maximal degree in co-relation 8548. Up to 808 conditions per place. [2022-11-21 16:47:45,036 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 356 selfloop transitions, 107 changer transitions 27/529 dead transitions. [2022-11-21 16:47:45,036 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 529 transitions, 7735 flow [2022-11-21 16:47:45,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-21 16:47:45,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-21 16:47:45,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1757 transitions. [2022-11-21 16:47:45,038 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5664087685364281 [2022-11-21 16:47:45,038 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1757 transitions. [2022-11-21 16:47:45,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1757 transitions. [2022-11-21 16:47:45,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:47:45,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1757 transitions. [2022-11-21 16:47:45,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 53.24242424242424) internal successors, (1757), 33 states have internal predecessors, (1757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:45,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:45,043 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:45,043 INFO L175 Difference]: Start difference. First operand has 462 places, 488 transitions, 6190 flow. Second operand 33 states and 1757 transitions. [2022-11-21 16:47:45,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 529 transitions, 7735 flow [2022-11-21 16:47:45,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 529 transitions, 7449 flow, removed 72 selfloop flow, removed 26 redundant places. [2022-11-21 16:47:45,190 INFO L231 Difference]: Finished difference. Result has 471 places, 491 transitions, 6300 flow [2022-11-21 16:47:45,190 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=5941, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=6300, PETRI_PLACES=471, PETRI_TRANSITIONS=491} [2022-11-21 16:47:45,191 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 383 predicate places. [2022-11-21 16:47:45,191 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 491 transitions, 6300 flow [2022-11-21 16:47:45,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:45,191 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:47:45,192 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:47:45,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-11-21 16:47:45,192 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:47:45,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:47:45,192 INFO L85 PathProgramCache]: Analyzing trace with hash 920423182, now seen corresponding path program 62 times [2022-11-21 16:47:45,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:47:45,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101656193] [2022-11-21 16:47:45,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:47:45,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:47:45,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:45,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:47:45,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:47:45,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101656193] [2022-11-21 16:47:45,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101656193] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:47:45,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:47:45,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:47:45,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307129932] [2022-11-21 16:47:45,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:47:45,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:47:45,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:47:45,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:47:45,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:47:45,697 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:47:45,698 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 491 transitions, 6300 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:45,698 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:47:45,698 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:47:45,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:47:47,478 INFO L130 PetriNetUnfolder]: 406/1197 cut-off events. [2022-11-21 16:47:47,478 INFO L131 PetriNetUnfolder]: For 18036/18036 co-relation queries the response was YES. [2022-11-21 16:47:47,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8777 conditions, 1197 events. 406/1197 cut-off events. For 18036/18036 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 7315 event pairs, 40 based on Foata normal form. 1/1197 useless extension candidates. Maximal degree in co-relation 8619. Up to 840 conditions per place. [2022-11-21 16:47:47,493 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 379 selfloop transitions, 94 changer transitions 22/534 dead transitions. [2022-11-21 16:47:47,493 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 534 transitions, 7799 flow [2022-11-21 16:47:47,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-21 16:47:47,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-21 16:47:47,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1900 transitions. [2022-11-21 16:47:47,495 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5614657210401891 [2022-11-21 16:47:47,495 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1900 transitions. [2022-11-21 16:47:47,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1900 transitions. [2022-11-21 16:47:47,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:47:47,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1900 transitions. [2022-11-21 16:47:47,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 52.77777777777778) internal successors, (1900), 36 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:47,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:47,499 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:47,499 INFO L175 Difference]: Start difference. First operand has 471 places, 491 transitions, 6300 flow. Second operand 36 states and 1900 transitions. [2022-11-21 16:47:47,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 534 transitions, 7799 flow [2022-11-21 16:47:47,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 534 transitions, 7513 flow, removed 64 selfloop flow, removed 29 redundant places. [2022-11-21 16:47:47,644 INFO L231 Difference]: Finished difference. Result has 483 places, 500 transitions, 6463 flow [2022-11-21 16:47:47,644 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=6058, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=6463, PETRI_PLACES=483, PETRI_TRANSITIONS=500} [2022-11-21 16:47:47,644 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 395 predicate places. [2022-11-21 16:47:47,644 INFO L495 AbstractCegarLoop]: Abstraction has has 483 places, 500 transitions, 6463 flow [2022-11-21 16:47:47,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:47,645 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:47:47,645 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:47:47,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-11-21 16:47:47,645 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:47:47,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:47:47,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1139507504, now seen corresponding path program 63 times [2022-11-21 16:47:47,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:47:47,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611018607] [2022-11-21 16:47:47,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:47:47,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:47:47,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:48,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:47:48,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:47:48,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611018607] [2022-11-21 16:47:48,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611018607] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:47:48,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:47:48,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:47:48,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613235587] [2022-11-21 16:47:48,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:47:48,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:47:48,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:47:48,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:47:48,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:47:48,201 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:47:48,201 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 483 places, 500 transitions, 6463 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:48,201 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:47:48,202 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:47:48,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:47:49,967 INFO L130 PetriNetUnfolder]: 399/1195 cut-off events. [2022-11-21 16:47:49,968 INFO L131 PetriNetUnfolder]: For 17685/17685 co-relation queries the response was YES. [2022-11-21 16:47:49,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8718 conditions, 1195 events. 399/1195 cut-off events. For 17685/17685 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 7342 event pairs, 44 based on Foata normal form. 1/1194 useless extension candidates. Maximal degree in co-relation 8555. Up to 844 conditions per place. [2022-11-21 16:47:49,987 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 380 selfloop transitions, 88 changer transitions 19/526 dead transitions. [2022-11-21 16:47:49,987 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 526 transitions, 7610 flow [2022-11-21 16:47:49,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-21 16:47:49,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-21 16:47:49,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1791 transitions. [2022-11-21 16:47:49,990 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5603879849812266 [2022-11-21 16:47:49,990 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1791 transitions. [2022-11-21 16:47:49,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1791 transitions. [2022-11-21 16:47:49,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:47:49,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1791 transitions. [2022-11-21 16:47:49,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 52.6764705882353) internal successors, (1791), 34 states have internal predecessors, (1791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:49,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:49,995 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:49,995 INFO L175 Difference]: Start difference. First operand has 483 places, 500 transitions, 6463 flow. Second operand 34 states and 1791 transitions. [2022-11-21 16:47:49,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 526 transitions, 7610 flow [2022-11-21 16:47:50,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 482 places, 526 transitions, 7384 flow, removed 56 selfloop flow, removed 28 redundant places. [2022-11-21 16:47:50,157 INFO L231 Difference]: Finished difference. Result has 489 places, 497 transitions, 6418 flow [2022-11-21 16:47:50,157 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=6249, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=6418, PETRI_PLACES=489, PETRI_TRANSITIONS=497} [2022-11-21 16:47:50,158 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 401 predicate places. [2022-11-21 16:47:50,158 INFO L495 AbstractCegarLoop]: Abstraction has has 489 places, 497 transitions, 6418 flow [2022-11-21 16:47:50,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:50,158 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:47:50,158 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:47:50,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-11-21 16:47:50,159 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:47:50,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:47:50,159 INFO L85 PathProgramCache]: Analyzing trace with hash -512865626, now seen corresponding path program 64 times [2022-11-21 16:47:50,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:47:50,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540008315] [2022-11-21 16:47:50,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:47:50,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:47:50,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:50,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:47:50,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:47:50,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540008315] [2022-11-21 16:47:50,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540008315] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:47:50,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:47:50,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:47:50,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697734472] [2022-11-21 16:47:50,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:47:50,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:47:50,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:47:50,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:47:50,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:47:50,692 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:47:50,693 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 489 places, 497 transitions, 6418 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:50,694 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:47:50,694 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:47:50,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:47:52,391 INFO L130 PetriNetUnfolder]: 406/1214 cut-off events. [2022-11-21 16:47:52,391 INFO L131 PetriNetUnfolder]: For 18057/18057 co-relation queries the response was YES. [2022-11-21 16:47:52,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8906 conditions, 1214 events. 406/1214 cut-off events. For 18057/18057 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 7506 event pairs, 52 based on Foata normal form. 1/1212 useless extension candidates. Maximal degree in co-relation 8742. Up to 824 conditions per place. [2022-11-21 16:47:52,409 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 369 selfloop transitions, 107 changer transitions 22/537 dead transitions. [2022-11-21 16:47:52,409 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 537 transitions, 7911 flow [2022-11-21 16:47:52,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-21 16:47:52,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-21 16:47:52,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1858 transitions. [2022-11-21 16:47:52,412 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.564741641337386 [2022-11-21 16:47:52,412 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1858 transitions. [2022-11-21 16:47:52,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1858 transitions. [2022-11-21 16:47:52,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:47:52,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1858 transitions. [2022-11-21 16:47:52,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 53.08571428571429) internal successors, (1858), 35 states have internal predecessors, (1858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:52,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:52,415 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:52,415 INFO L175 Difference]: Start difference. First operand has 489 places, 497 transitions, 6418 flow. Second operand 35 states and 1858 transitions. [2022-11-21 16:47:52,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 537 transitions, 7911 flow [2022-11-21 16:47:52,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 537 transitions, 7635 flow, removed 22 selfloop flow, removed 36 redundant places. [2022-11-21 16:47:52,566 INFO L231 Difference]: Finished difference. Result has 490 places, 503 transitions, 6576 flow [2022-11-21 16:47:52,567 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=6166, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=6576, PETRI_PLACES=490, PETRI_TRANSITIONS=503} [2022-11-21 16:47:52,567 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 402 predicate places. [2022-11-21 16:47:52,568 INFO L495 AbstractCegarLoop]: Abstraction has has 490 places, 503 transitions, 6576 flow [2022-11-21 16:47:52,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:52,568 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:47:52,568 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:47:52,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-11-21 16:47:52,569 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:47:52,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:47:52,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1877530548, now seen corresponding path program 65 times [2022-11-21 16:47:52,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:47:52,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618286078] [2022-11-21 16:47:52,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:47:52,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:47:52,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:53,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:47:53,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:47:53,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618286078] [2022-11-21 16:47:53,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618286078] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:47:53,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:47:53,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:47:53,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953467942] [2022-11-21 16:47:53,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:47:53,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:47:53,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:47:53,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:47:53,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:47:53,057 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:47:53,058 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 503 transitions, 6576 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:53,058 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:47:53,058 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:47:53,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:47:54,715 INFO L130 PetriNetUnfolder]: 409/1245 cut-off events. [2022-11-21 16:47:54,715 INFO L131 PetriNetUnfolder]: For 19497/19497 co-relation queries the response was YES. [2022-11-21 16:47:54,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9216 conditions, 1245 events. 409/1245 cut-off events. For 19497/19497 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 7900 event pairs, 59 based on Foata normal form. 1/1244 useless extension candidates. Maximal degree in co-relation 9050. Up to 863 conditions per place. [2022-11-21 16:47:54,738 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 389 selfloop transitions, 84 changer transitions 31/543 dead transitions. [2022-11-21 16:47:54,738 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 517 places, 543 transitions, 8153 flow [2022-11-21 16:47:54,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-21 16:47:54,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-21 16:47:54,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1804 transitions. [2022-11-21 16:47:54,741 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5644555694618273 [2022-11-21 16:47:54,741 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1804 transitions. [2022-11-21 16:47:54,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1804 transitions. [2022-11-21 16:47:54,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:47:54,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1804 transitions. [2022-11-21 16:47:54,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.05882352941177) internal successors, (1804), 34 states have internal predecessors, (1804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:54,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:54,747 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:54,747 INFO L175 Difference]: Start difference. First operand has 490 places, 503 transitions, 6576 flow. Second operand 34 states and 1804 transitions. [2022-11-21 16:47:54,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 517 places, 543 transitions, 8153 flow [2022-11-21 16:47:54,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 543 transitions, 7873 flow, removed 71 selfloop flow, removed 28 redundant places. [2022-11-21 16:47:55,004 INFO L231 Difference]: Finished difference. Result has 499 places, 501 transitions, 6575 flow [2022-11-21 16:47:55,005 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=6332, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=6575, PETRI_PLACES=499, PETRI_TRANSITIONS=501} [2022-11-21 16:47:55,005 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 411 predicate places. [2022-11-21 16:47:55,005 INFO L495 AbstractCegarLoop]: Abstraction has has 499 places, 501 transitions, 6575 flow [2022-11-21 16:47:55,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:55,007 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:47:55,007 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:47:55,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-11-21 16:47:55,007 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:47:55,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:47:55,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1524726466, now seen corresponding path program 66 times [2022-11-21 16:47:55,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:47:55,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252362257] [2022-11-21 16:47:55,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:47:55,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:47:55,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:55,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:47:55,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:47:55,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252362257] [2022-11-21 16:47:55,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252362257] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:47:55,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:47:55,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-21 16:47:55,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276598061] [2022-11-21 16:47:55,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:47:55,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-21 16:47:55,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:47:55,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-21 16:47:55,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-21 16:47:55,637 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:47:55,638 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 499 places, 501 transitions, 6575 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:55,638 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:47:55,638 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:47:55,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:47:57,962 INFO L130 PetriNetUnfolder]: 442/1380 cut-off events. [2022-11-21 16:47:57,962 INFO L131 PetriNetUnfolder]: For 22184/22184 co-relation queries the response was YES. [2022-11-21 16:47:57,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10069 conditions, 1380 events. 442/1380 cut-off events. For 22184/22184 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 9128 event pairs, 54 based on Foata normal form. 1/1379 useless extension candidates. Maximal degree in co-relation 9898. Up to 830 conditions per place. [2022-11-21 16:47:57,991 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 365 selfloop transitions, 189 changer transitions 22/615 dead transitions. [2022-11-21 16:47:57,991 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 537 places, 615 transitions, 9319 flow [2022-11-21 16:47:57,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-21 16:47:57,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-11-21 16:47:57,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 2575 transitions. [2022-11-21 16:47:57,994 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5590534085974815 [2022-11-21 16:47:57,994 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 2575 transitions. [2022-11-21 16:47:57,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 2575 transitions. [2022-11-21 16:47:57,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:47:57,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 2575 transitions. [2022-11-21 16:47:57,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 52.55102040816327) internal successors, (2575), 49 states have internal predecessors, (2575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:57,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 94.0) internal successors, (4700), 50 states have internal predecessors, (4700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:57,999 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 94.0) internal successors, (4700), 50 states have internal predecessors, (4700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:57,999 INFO L175 Difference]: Start difference. First operand has 499 places, 501 transitions, 6575 flow. Second operand 49 states and 2575 transitions. [2022-11-21 16:47:57,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 537 places, 615 transitions, 9319 flow [2022-11-21 16:47:58,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 505 places, 615 transitions, 9031 flow, removed 74 selfloop flow, removed 32 redundant places. [2022-11-21 16:47:58,169 INFO L231 Difference]: Finished difference. Result has 516 places, 568 transitions, 7928 flow [2022-11-21 16:47:58,169 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=6355, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=7928, PETRI_PLACES=516, PETRI_TRANSITIONS=568} [2022-11-21 16:47:58,169 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 428 predicate places. [2022-11-21 16:47:58,169 INFO L495 AbstractCegarLoop]: Abstraction has has 516 places, 568 transitions, 7928 flow [2022-11-21 16:47:58,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:58,170 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:47:58,170 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:47:58,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-11-21 16:47:58,170 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:47:58,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:47:58,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1989330444, now seen corresponding path program 67 times [2022-11-21 16:47:58,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:47:58,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072541326] [2022-11-21 16:47:58,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:47:58,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:47:58,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:58,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:47:58,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:47:58,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072541326] [2022-11-21 16:47:58,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072541326] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:47:58,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:47:58,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-21 16:47:58,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479387116] [2022-11-21 16:47:58,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:47:58,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-21 16:47:58,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:47:58,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-21 16:47:58,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-11-21 16:47:58,708 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:47:58,709 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 516 places, 568 transitions, 7928 flow. Second operand has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:58,709 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:47:58,709 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:47:58,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:48:01,253 INFO L130 PetriNetUnfolder]: 438/1378 cut-off events. [2022-11-21 16:48:01,253 INFO L131 PetriNetUnfolder]: For 24112/24112 co-relation queries the response was YES. [2022-11-21 16:48:01,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10435 conditions, 1378 events. 438/1378 cut-off events. For 24112/24112 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 9157 event pairs, 44 based on Foata normal form. 1/1377 useless extension candidates. Maximal degree in co-relation 10262. Up to 866 conditions per place. [2022-11-21 16:48:01,278 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 403 selfloop transitions, 151 changer transitions 24/617 dead transitions. [2022-11-21 16:48:01,278 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 560 places, 617 transitions, 9755 flow [2022-11-21 16:48:01,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-11-21 16:48:01,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2022-11-21 16:48:01,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 2666 transitions. [2022-11-21 16:48:01,281 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5561118064246975 [2022-11-21 16:48:01,281 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 2666 transitions. [2022-11-21 16:48:01,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 2666 transitions. [2022-11-21 16:48:01,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:48:01,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 2666 transitions. [2022-11-21 16:48:01,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 52.27450980392157) internal successors, (2666), 51 states have internal predecessors, (2666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:01,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 94.0) internal successors, (4888), 52 states have internal predecessors, (4888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:01,287 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 94.0) internal successors, (4888), 52 states have internal predecessors, (4888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:01,287 INFO L175 Difference]: Start difference. First operand has 516 places, 568 transitions, 7928 flow. Second operand 51 states and 2666 transitions. [2022-11-21 16:48:01,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 560 places, 617 transitions, 9755 flow [2022-11-21 16:48:01,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 527 places, 617 transitions, 9290 flow, removed 151 selfloop flow, removed 33 redundant places. [2022-11-21 16:48:01,535 INFO L231 Difference]: Finished difference. Result has 536 places, 574 transitions, 8010 flow [2022-11-21 16:48:01,535 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=7491, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=568, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=8010, PETRI_PLACES=536, PETRI_TRANSITIONS=574} [2022-11-21 16:48:01,535 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 448 predicate places. [2022-11-21 16:48:01,535 INFO L495 AbstractCegarLoop]: Abstraction has has 536 places, 574 transitions, 8010 flow [2022-11-21 16:48:01,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:01,536 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:48:01,536 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:48:01,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-11-21 16:48:01,536 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:48:01,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:48:01,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1556785272, now seen corresponding path program 68 times [2022-11-21 16:48:01,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:48:01,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984364976] [2022-11-21 16:48:01,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:48:01,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:48:01,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:48:02,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:48:02,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:48:02,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984364976] [2022-11-21 16:48:02,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984364976] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:48:02,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:48:02,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:48:02,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320982279] [2022-11-21 16:48:02,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:48:02,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:48:02,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:48:02,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:48:02,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:48:02,149 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:48:02,149 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 536 places, 574 transitions, 8010 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:02,150 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:48:02,150 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:48:02,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:48:04,140 INFO L130 PetriNetUnfolder]: 447/1401 cut-off events. [2022-11-21 16:48:04,140 INFO L131 PetriNetUnfolder]: For 25002/25002 co-relation queries the response was YES. [2022-11-21 16:48:04,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10802 conditions, 1401 events. 447/1401 cut-off events. For 25002/25002 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 9346 event pairs, 57 based on Foata normal form. 1/1399 useless extension candidates. Maximal degree in co-relation 10621. Up to 947 conditions per place. [2022-11-21 16:48:04,164 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 448 selfloop transitions, 119 changer transitions 24/630 dead transitions. [2022-11-21 16:48:04,164 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 566 places, 630 transitions, 10026 flow [2022-11-21 16:48:04,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-21 16:48:04,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-21 16:48:04,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2011 transitions. [2022-11-21 16:48:04,167 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.562989921612542 [2022-11-21 16:48:04,167 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2011 transitions. [2022-11-21 16:48:04,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2011 transitions. [2022-11-21 16:48:04,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:48:04,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2011 transitions. [2022-11-21 16:48:04,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 52.921052631578945) internal successors, (2011), 38 states have internal predecessors, (2011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:04,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:04,171 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:04,171 INFO L175 Difference]: Start difference. First operand has 536 places, 574 transitions, 8010 flow. Second operand 38 states and 2011 transitions. [2022-11-21 16:48:04,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 566 places, 630 transitions, 10026 flow [2022-11-21 16:48:04,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 524 places, 630 transitions, 9592 flow, removed 100 selfloop flow, removed 42 redundant places. [2022-11-21 16:48:04,456 INFO L231 Difference]: Finished difference. Result has 535 places, 591 transitions, 8255 flow [2022-11-21 16:48:04,456 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=7600, PETRI_DIFFERENCE_MINUEND_PLACES=487, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=574, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=462, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=8255, PETRI_PLACES=535, PETRI_TRANSITIONS=591} [2022-11-21 16:48:04,457 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 447 predicate places. [2022-11-21 16:48:04,457 INFO L495 AbstractCegarLoop]: Abstraction has has 535 places, 591 transitions, 8255 flow [2022-11-21 16:48:04,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:04,457 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:48:04,457 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:48:04,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-11-21 16:48:04,457 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:48:04,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:48:04,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1042239066, now seen corresponding path program 69 times [2022-11-21 16:48:04,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:48:04,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444079883] [2022-11-21 16:48:04,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:48:04,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:48:04,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:48:05,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:48:05,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:48:05,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444079883] [2022-11-21 16:48:05,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444079883] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:48:05,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:48:05,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:48:05,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540561248] [2022-11-21 16:48:05,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:48:05,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:48:05,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:48:05,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:48:05,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:48:05,007 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:48:05,008 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 535 places, 591 transitions, 8255 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:05,008 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:48:05,008 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:48:05,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:48:07,059 INFO L130 PetriNetUnfolder]: 447/1426 cut-off events. [2022-11-21 16:48:07,059 INFO L131 PetriNetUnfolder]: For 25535/25535 co-relation queries the response was YES. [2022-11-21 16:48:07,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10940 conditions, 1426 events. 447/1426 cut-off events. For 25535/25535 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 9649 event pairs, 54 based on Foata normal form. 1/1425 useless extension candidates. Maximal degree in co-relation 10755. Up to 950 conditions per place. [2022-11-21 16:48:07,082 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 452 selfloop transitions, 118 changer transitions 22/631 dead transitions. [2022-11-21 16:48:07,082 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 564 places, 631 transitions, 10060 flow [2022-11-21 16:48:07,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-21 16:48:07,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-21 16:48:07,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1908 transitions. [2022-11-21 16:48:07,084 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5638297872340425 [2022-11-21 16:48:07,084 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1908 transitions. [2022-11-21 16:48:07,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1908 transitions. [2022-11-21 16:48:07,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:48:07,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1908 transitions. [2022-11-21 16:48:07,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 53.0) internal successors, (1908), 36 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:07,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:07,088 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:07,088 INFO L175 Difference]: Start difference. First operand has 535 places, 591 transitions, 8255 flow. Second operand 36 states and 1908 transitions. [2022-11-21 16:48:07,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 564 places, 631 transitions, 10060 flow [2022-11-21 16:48:07,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 534 places, 631 transitions, 9781 flow, removed 64 selfloop flow, removed 30 redundant places. [2022-11-21 16:48:07,372 INFO L231 Difference]: Finished difference. Result has 545 places, 597 transitions, 8476 flow [2022-11-21 16:48:07,373 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8006, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=591, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=474, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=8476, PETRI_PLACES=545, PETRI_TRANSITIONS=597} [2022-11-21 16:48:07,373 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 457 predicate places. [2022-11-21 16:48:07,373 INFO L495 AbstractCegarLoop]: Abstraction has has 545 places, 597 transitions, 8476 flow [2022-11-21 16:48:07,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:07,374 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:48:07,374 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:48:07,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-11-21 16:48:07,374 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:48:07,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:48:07,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1046651676, now seen corresponding path program 70 times [2022-11-21 16:48:07,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:48:07,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105832828] [2022-11-21 16:48:07,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:48:07,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:48:07,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:48:07,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:48:07,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:48:07,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105832828] [2022-11-21 16:48:07,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105832828] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:48:07,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:48:07,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:48:07,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70294776] [2022-11-21 16:48:07,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:48:07,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:48:07,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:48:07,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:48:07,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:48:07,838 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:48:07,838 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 545 places, 597 transitions, 8476 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:07,838 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:48:07,838 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:48:07,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:48:09,818 INFO L130 PetriNetUnfolder]: 447/1438 cut-off events. [2022-11-21 16:48:09,818 INFO L131 PetriNetUnfolder]: For 27719/27719 co-relation queries the response was YES. [2022-11-21 16:48:09,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11175 conditions, 1438 events. 447/1438 cut-off events. For 27719/27719 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 9850 event pairs, 41 based on Foata normal form. 1/1437 useless extension candidates. Maximal degree in co-relation 10984. Up to 932 conditions per place. [2022-11-21 16:48:09,844 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 441 selfloop transitions, 132 changer transitions 32/644 dead transitions. [2022-11-21 16:48:09,844 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 574 places, 644 transitions, 10329 flow [2022-11-21 16:48:09,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-21 16:48:09,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-21 16:48:09,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1912 transitions. [2022-11-21 16:48:09,847 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5650118203309693 [2022-11-21 16:48:09,847 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1912 transitions. [2022-11-21 16:48:09,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1912 transitions. [2022-11-21 16:48:09,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:48:09,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1912 transitions. [2022-11-21 16:48:09,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 53.111111111111114) internal successors, (1912), 36 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:09,851 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:09,851 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:09,852 INFO L175 Difference]: Start difference. First operand has 545 places, 597 transitions, 8476 flow. Second operand 36 states and 1912 transitions. [2022-11-21 16:48:09,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 574 places, 644 transitions, 10329 flow [2022-11-21 16:48:10,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 545 places, 644 transitions, 10006 flow, removed 87 selfloop flow, removed 29 redundant places. [2022-11-21 16:48:10,104 INFO L231 Difference]: Finished difference. Result has 555 places, 594 transitions, 8486 flow [2022-11-21 16:48:10,105 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8197, PETRI_DIFFERENCE_MINUEND_PLACES=510, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=597, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=467, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=8486, PETRI_PLACES=555, PETRI_TRANSITIONS=594} [2022-11-21 16:48:10,105 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 467 predicate places. [2022-11-21 16:48:10,105 INFO L495 AbstractCegarLoop]: Abstraction has has 555 places, 594 transitions, 8486 flow [2022-11-21 16:48:10,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:10,105 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:48:10,105 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:48:10,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-11-21 16:48:10,106 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:48:10,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:48:10,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1300957692, now seen corresponding path program 71 times [2022-11-21 16:48:10,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:48:10,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534890643] [2022-11-21 16:48:10,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:48:10,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:48:10,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:48:10,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:48:10,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:48:10,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534890643] [2022-11-21 16:48:10,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534890643] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:48:10,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:48:10,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-21 16:48:10,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575090771] [2022-11-21 16:48:10,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:48:10,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-21 16:48:10,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:48:10,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-21 16:48:10,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-21 16:48:10,613 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:48:10,613 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 555 places, 594 transitions, 8486 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:10,614 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:48:10,614 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:48:10,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:48:12,924 INFO L130 PetriNetUnfolder]: 443/1413 cut-off events. [2022-11-21 16:48:12,924 INFO L131 PetriNetUnfolder]: For 27436/27436 co-relation queries the response was YES. [2022-11-21 16:48:12,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11203 conditions, 1413 events. 443/1413 cut-off events. For 27436/27436 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 9610 event pairs, 47 based on Foata normal form. 1/1411 useless extension candidates. Maximal degree in co-relation 11007. Up to 975 conditions per place. [2022-11-21 16:48:12,952 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 466 selfloop transitions, 106 changer transitions 22/633 dead transitions. [2022-11-21 16:48:12,952 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 582 places, 633 transitions, 10306 flow [2022-11-21 16:48:12,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-21 16:48:12,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-21 16:48:12,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1951 transitions. [2022-11-21 16:48:12,955 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5609545715928694 [2022-11-21 16:48:12,955 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1951 transitions. [2022-11-21 16:48:12,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1951 transitions. [2022-11-21 16:48:12,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:48:12,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1951 transitions. [2022-11-21 16:48:12,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 52.729729729729726) internal successors, (1951), 37 states have internal predecessors, (1951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:12,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:12,960 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:12,960 INFO L175 Difference]: Start difference. First operand has 555 places, 594 transitions, 8486 flow. Second operand 37 states and 1951 transitions. [2022-11-21 16:48:12,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 582 places, 633 transitions, 10306 flow [2022-11-21 16:48:13,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 550 places, 633 transitions, 9965 flow, removed 38 selfloop flow, removed 32 redundant places. [2022-11-21 16:48:13,289 INFO L231 Difference]: Finished difference. Result has 561 places, 599 transitions, 8609 flow [2022-11-21 16:48:13,290 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8183, PETRI_DIFFERENCE_MINUEND_PLACES=514, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=594, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=489, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=8609, PETRI_PLACES=561, PETRI_TRANSITIONS=599} [2022-11-21 16:48:13,291 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 473 predicate places. [2022-11-21 16:48:13,291 INFO L495 AbstractCegarLoop]: Abstraction has has 561 places, 599 transitions, 8609 flow [2022-11-21 16:48:13,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:13,291 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:48:13,292 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:48:13,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-11-21 16:48:13,292 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:48:13,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:48:13,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1965681016, now seen corresponding path program 72 times [2022-11-21 16:48:13,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:48:13,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971991367] [2022-11-21 16:48:13,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:48:13,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:48:13,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:48:13,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:48:13,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:48:13,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971991367] [2022-11-21 16:48:13,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971991367] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:48:13,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:48:13,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:48:13,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928640708] [2022-11-21 16:48:13,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:48:13,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:48:13,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:48:13,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:48:13,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:48:13,974 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:48:13,974 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 561 places, 599 transitions, 8609 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:13,974 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:48:13,975 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:48:13,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:48:16,162 INFO L130 PetriNetUnfolder]: 436/1421 cut-off events. [2022-11-21 16:48:16,163 INFO L131 PetriNetUnfolder]: For 27553/27553 co-relation queries the response was YES. [2022-11-21 16:48:16,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11085 conditions, 1421 events. 436/1421 cut-off events. For 27553/27553 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 9747 event pairs, 55 based on Foata normal form. 1/1420 useless extension candidates. Maximal degree in co-relation 10887. Up to 961 conditions per place. [2022-11-21 16:48:16,185 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 458 selfloop transitions, 106 changer transitions 22/625 dead transitions. [2022-11-21 16:48:16,185 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 588 places, 625 transitions, 10008 flow [2022-11-21 16:48:16,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-21 16:48:16,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-21 16:48:16,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1799 transitions. [2022-11-21 16:48:16,187 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5628911138923655 [2022-11-21 16:48:16,187 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1799 transitions. [2022-11-21 16:48:16,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1799 transitions. [2022-11-21 16:48:16,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:48:16,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1799 transitions. [2022-11-21 16:48:16,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 52.911764705882355) internal successors, (1799), 34 states have internal predecessors, (1799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:16,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:16,190 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:16,190 INFO L175 Difference]: Start difference. First operand has 561 places, 599 transitions, 8609 flow. Second operand 34 states and 1799 transitions. [2022-11-21 16:48:16,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 588 places, 625 transitions, 10008 flow [2022-11-21 16:48:16,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 557 places, 625 transitions, 9710 flow, removed 74 selfloop flow, removed 31 redundant places. [2022-11-21 16:48:16,440 INFO L231 Difference]: Finished difference. Result has 564 places, 593 transitions, 8494 flow [2022-11-21 16:48:16,440 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8327, PETRI_DIFFERENCE_MINUEND_PLACES=524, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=493, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=8494, PETRI_PLACES=564, PETRI_TRANSITIONS=593} [2022-11-21 16:48:16,441 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 476 predicate places. [2022-11-21 16:48:16,441 INFO L495 AbstractCegarLoop]: Abstraction has has 564 places, 593 transitions, 8494 flow [2022-11-21 16:48:16,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:16,441 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:48:16,441 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:48:16,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-11-21 16:48:16,441 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:48:16,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:48:16,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1548872244, now seen corresponding path program 73 times [2022-11-21 16:48:16,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:48:16,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911043376] [2022-11-21 16:48:16,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:48:16,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:48:16,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:48:17,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:48:17,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:48:17,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911043376] [2022-11-21 16:48:17,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911043376] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:48:17,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:48:17,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:48:17,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118637982] [2022-11-21 16:48:17,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:48:17,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:48:17,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:48:17,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:48:17,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:48:17,039 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:48:17,040 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 564 places, 593 transitions, 8494 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:17,040 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:48:17,040 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:48:17,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:48:19,342 INFO L130 PetriNetUnfolder]: 448/1444 cut-off events. [2022-11-21 16:48:19,342 INFO L131 PetriNetUnfolder]: For 27750/27750 co-relation queries the response was YES. [2022-11-21 16:48:19,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11373 conditions, 1444 events. 448/1444 cut-off events. For 27750/27750 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 9893 event pairs, 54 based on Foata normal form. 1/1442 useless extension candidates. Maximal degree in co-relation 11174. Up to 923 conditions per place. [2022-11-21 16:48:19,362 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 416 selfloop transitions, 169 changer transitions 24/648 dead transitions. [2022-11-21 16:48:19,362 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 599 places, 648 transitions, 10550 flow [2022-11-21 16:48:19,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-21 16:48:19,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-11-21 16:48:19,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 2366 transitions. [2022-11-21 16:48:19,365 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5593380614657211 [2022-11-21 16:48:19,365 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 2366 transitions. [2022-11-21 16:48:19,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 2366 transitions. [2022-11-21 16:48:19,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:48:19,366 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 2366 transitions. [2022-11-21 16:48:19,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 52.577777777777776) internal successors, (2366), 45 states have internal predecessors, (2366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:19,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 94.0) internal successors, (4324), 46 states have internal predecessors, (4324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:19,372 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 94.0) internal successors, (4324), 46 states have internal predecessors, (4324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:19,372 INFO L175 Difference]: Start difference. First operand has 564 places, 593 transitions, 8494 flow. Second operand 45 states and 2366 transitions. [2022-11-21 16:48:19,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 599 places, 648 transitions, 10550 flow [2022-11-21 16:48:19,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 562 places, 648 transitions, 10183 flow, removed 26 selfloop flow, removed 37 redundant places. [2022-11-21 16:48:19,621 INFO L231 Difference]: Finished difference. Result has 573 places, 610 transitions, 8943 flow [2022-11-21 16:48:19,622 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8161, PETRI_DIFFERENCE_MINUEND_PLACES=518, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=593, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=8943, PETRI_PLACES=573, PETRI_TRANSITIONS=610} [2022-11-21 16:48:19,622 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 485 predicate places. [2022-11-21 16:48:19,622 INFO L495 AbstractCegarLoop]: Abstraction has has 573 places, 610 transitions, 8943 flow [2022-11-21 16:48:19,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:19,622 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:48:19,623 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:48:19,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-11-21 16:48:19,623 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:48:19,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:48:19,623 INFO L85 PathProgramCache]: Analyzing trace with hash -2030521222, now seen corresponding path program 74 times [2022-11-21 16:48:19,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:48:19,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368951480] [2022-11-21 16:48:19,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:48:19,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:48:19,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:48:20,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:48:20,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:48:20,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368951480] [2022-11-21 16:48:20,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368951480] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:48:20,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:48:20,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-21 16:48:20,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344197589] [2022-11-21 16:48:20,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:48:20,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-21 16:48:20,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:48:20,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-21 16:48:20,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-21 16:48:20,199 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:48:20,200 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 573 places, 610 transitions, 8943 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:20,200 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:48:20,200 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:48:20,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:48:22,840 INFO L130 PetriNetUnfolder]: 448/1473 cut-off events. [2022-11-21 16:48:22,841 INFO L131 PetriNetUnfolder]: For 29479/29479 co-relation queries the response was YES. [2022-11-21 16:48:22,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11603 conditions, 1473 events. 448/1473 cut-off events. For 29479/29479 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 10315 event pairs, 44 based on Foata normal form. 1/1472 useless extension candidates. Maximal degree in co-relation 11402. Up to 891 conditions per place. [2022-11-21 16:48:22,863 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 407 selfloop transitions, 183 changer transitions 32/661 dead transitions. [2022-11-21 16:48:22,863 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 616 places, 661 transitions, 10919 flow [2022-11-21 16:48:22,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-21 16:48:22,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2022-11-21 16:48:22,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 2620 transitions. [2022-11-21 16:48:22,866 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5574468085106383 [2022-11-21 16:48:22,866 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 2620 transitions. [2022-11-21 16:48:22,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 2620 transitions. [2022-11-21 16:48:22,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:48:22,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 2620 transitions. [2022-11-21 16:48:22,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 52.4) internal successors, (2620), 50 states have internal predecessors, (2620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:22,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 94.0) internal successors, (4794), 51 states have internal predecessors, (4794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:22,871 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 94.0) internal successors, (4794), 51 states have internal predecessors, (4794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:22,871 INFO L175 Difference]: Start difference. First operand has 573 places, 610 transitions, 8943 flow. Second operand 50 states and 2620 transitions. [2022-11-21 16:48:22,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 616 places, 661 transitions, 10919 flow [2022-11-21 16:48:23,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 578 places, 661 transitions, 10506 flow, removed 87 selfloop flow, removed 38 redundant places. [2022-11-21 16:48:23,131 INFO L231 Difference]: Finished difference. Result has 590 places, 613 transitions, 9119 flow [2022-11-21 16:48:23,131 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8587, PETRI_DIFFERENCE_MINUEND_PLACES=529, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=610, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=176, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=9119, PETRI_PLACES=590, PETRI_TRANSITIONS=613} [2022-11-21 16:48:23,131 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 502 predicate places. [2022-11-21 16:48:23,131 INFO L495 AbstractCegarLoop]: Abstraction has has 590 places, 613 transitions, 9119 flow [2022-11-21 16:48:23,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:23,132 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:48:23,132 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:48:23,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-11-21 16:48:23,132 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:48:23,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:48:23,132 INFO L85 PathProgramCache]: Analyzing trace with hash 648024164, now seen corresponding path program 75 times [2022-11-21 16:48:23,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:48:23,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576619719] [2022-11-21 16:48:23,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:48:23,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:48:23,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:48:23,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:48:23,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:48:23,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576619719] [2022-11-21 16:48:23,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576619719] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:48:23,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:48:23,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:48:23,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352969450] [2022-11-21 16:48:23,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:48:23,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:48:23,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:48:23,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:48:23,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:48:23,629 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:48:23,629 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 590 places, 613 transitions, 9119 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:23,629 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:48:23,629 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:48:23,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:48:25,856 INFO L130 PetriNetUnfolder]: 444/1452 cut-off events. [2022-11-21 16:48:25,856 INFO L131 PetriNetUnfolder]: For 29256/29256 co-relation queries the response was YES. [2022-11-21 16:48:25,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11665 conditions, 1452 events. 444/1452 cut-off events. For 29256/29256 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 10107 event pairs, 41 based on Foata normal form. 1/1451 useless extension candidates. Maximal degree in co-relation 11458. Up to 957 conditions per place. [2022-11-21 16:48:25,883 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 456 selfloop transitions, 130 changer transitions 32/657 dead transitions. [2022-11-21 16:48:25,883 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 624 places, 657 transitions, 10996 flow [2022-11-21 16:48:25,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-21 16:48:25,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-11-21 16:48:25,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 2264 transitions. [2022-11-21 16:48:25,886 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5601187530925285 [2022-11-21 16:48:25,886 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 2264 transitions. [2022-11-21 16:48:25,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 2264 transitions. [2022-11-21 16:48:25,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:48:25,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 2264 transitions. [2022-11-21 16:48:25,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 52.651162790697676) internal successors, (2264), 43 states have internal predecessors, (2264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:25,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 94.0) internal successors, (4136), 44 states have internal predecessors, (4136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:25,890 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 94.0) internal successors, (4136), 44 states have internal predecessors, (4136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:25,891 INFO L175 Difference]: Start difference. First operand has 590 places, 613 transitions, 9119 flow. Second operand 43 states and 2264 transitions. [2022-11-21 16:48:25,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 624 places, 657 transitions, 10996 flow [2022-11-21 16:48:26,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 578 places, 657 transitions, 10500 flow, removed 57 selfloop flow, removed 46 redundant places. [2022-11-21 16:48:26,192 INFO L231 Difference]: Finished difference. Result has 588 places, 610 transitions, 8958 flow [2022-11-21 16:48:26,193 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8673, PETRI_DIFFERENCE_MINUEND_PLACES=536, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=613, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=484, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=8958, PETRI_PLACES=588, PETRI_TRANSITIONS=610} [2022-11-21 16:48:26,193 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 500 predicate places. [2022-11-21 16:48:26,193 INFO L495 AbstractCegarLoop]: Abstraction has has 588 places, 610 transitions, 8958 flow [2022-11-21 16:48:26,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:26,193 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:48:26,193 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:48:26,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-11-21 16:48:26,194 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:48:26,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:48:26,194 INFO L85 PathProgramCache]: Analyzing trace with hash -539184084, now seen corresponding path program 76 times [2022-11-21 16:48:26,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:48:26,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325640324] [2022-11-21 16:48:26,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:48:26,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:48:26,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:48:26,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:48:26,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:48:26,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325640324] [2022-11-21 16:48:26,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325640324] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:48:26,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:48:26,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:48:26,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401891993] [2022-11-21 16:48:26,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:48:26,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:48:26,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:48:26,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:48:26,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:48:26,686 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:48:26,687 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 588 places, 610 transitions, 8958 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:26,687 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:48:26,687 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:48:26,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:48:28,892 INFO L130 PetriNetUnfolder]: 442/1455 cut-off events. [2022-11-21 16:48:28,893 INFO L131 PetriNetUnfolder]: For 29115/29115 co-relation queries the response was YES. [2022-11-21 16:48:28,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11570 conditions, 1455 events. 442/1455 cut-off events. For 29115/29115 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 10044 event pairs, 44 based on Foata normal form. 1/1453 useless extension candidates. Maximal degree in co-relation 11363. Up to 1012 conditions per place. [2022-11-21 16:48:28,922 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 499 selfloop transitions, 90 changer transitions 22/650 dead transitions. [2022-11-21 16:48:28,922 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 614 places, 650 transitions, 10827 flow [2022-11-21 16:48:28,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-21 16:48:28,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-21 16:48:28,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1901 transitions. [2022-11-21 16:48:28,924 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5617612293144209 [2022-11-21 16:48:28,924 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1901 transitions. [2022-11-21 16:48:28,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1901 transitions. [2022-11-21 16:48:28,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:48:28,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1901 transitions. [2022-11-21 16:48:28,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 52.80555555555556) internal successors, (1901), 36 states have internal predecessors, (1901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:28,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:28,928 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:28,928 INFO L175 Difference]: Start difference. First operand has 588 places, 610 transitions, 8958 flow. Second operand 36 states and 1901 transitions. [2022-11-21 16:48:28,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 614 places, 650 transitions, 10827 flow [2022-11-21 16:48:29,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 577 places, 650 transitions, 10451 flow, removed 74 selfloop flow, removed 37 redundant places. [2022-11-21 16:48:29,327 INFO L231 Difference]: Finished difference. Result has 588 places, 616 transitions, 9016 flow [2022-11-21 16:48:29,328 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8632, PETRI_DIFFERENCE_MINUEND_PLACES=542, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=610, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=521, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=9016, PETRI_PLACES=588, PETRI_TRANSITIONS=616} [2022-11-21 16:48:29,328 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 500 predicate places. [2022-11-21 16:48:29,328 INFO L495 AbstractCegarLoop]: Abstraction has has 588 places, 616 transitions, 9016 flow [2022-11-21 16:48:29,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:29,328 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:48:29,328 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:48:29,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-11-21 16:48:29,329 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:48:29,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:48:29,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1628501694, now seen corresponding path program 77 times [2022-11-21 16:48:29,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:48:29,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111397291] [2022-11-21 16:48:29,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:48:29,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:48:29,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:48:29,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:48:29,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:48:29,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111397291] [2022-11-21 16:48:29,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111397291] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:48:29,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:48:29,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:48:29,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262860648] [2022-11-21 16:48:29,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:48:29,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:48:29,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:48:29,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:48:29,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:48:29,806 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:48:29,806 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 588 places, 616 transitions, 9016 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:29,806 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:48:29,807 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:48:29,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:48:31,861 INFO L130 PetriNetUnfolder]: 442/1449 cut-off events. [2022-11-21 16:48:31,861 INFO L131 PetriNetUnfolder]: For 30247/30247 co-relation queries the response was YES. [2022-11-21 16:48:31,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11685 conditions, 1449 events. 442/1449 cut-off events. For 30247/30247 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 10051 event pairs, 49 based on Foata normal form. 1/1448 useless extension candidates. Maximal degree in co-relation 11475. Up to 969 conditions per place. [2022-11-21 16:48:31,906 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 471 selfloop transitions, 129 changer transitions 16/655 dead transitions. [2022-11-21 16:48:31,906 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 616 places, 655 transitions, 11012 flow [2022-11-21 16:48:31,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-21 16:48:31,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-21 16:48:31,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1858 transitions. [2022-11-21 16:48:31,910 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.564741641337386 [2022-11-21 16:48:31,910 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1858 transitions. [2022-11-21 16:48:31,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1858 transitions. [2022-11-21 16:48:31,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:48:31,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1858 transitions. [2022-11-21 16:48:31,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 53.08571428571429) internal successors, (1858), 35 states have internal predecessors, (1858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:31,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:31,919 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:31,919 INFO L175 Difference]: Start difference. First operand has 588 places, 616 transitions, 9016 flow. Second operand 35 states and 1858 transitions. [2022-11-21 16:48:31,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 616 places, 655 transitions, 11012 flow [2022-11-21 16:48:32,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 586 places, 655 transitions, 10689 flow, removed 74 selfloop flow, removed 30 redundant places. [2022-11-21 16:48:32,391 INFO L231 Difference]: Finished difference. Result has 594 places, 627 transitions, 9382 flow [2022-11-21 16:48:32,391 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8719, PETRI_DIFFERENCE_MINUEND_PLACES=552, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=616, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=494, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=9382, PETRI_PLACES=594, PETRI_TRANSITIONS=627} [2022-11-21 16:48:32,392 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 506 predicate places. [2022-11-21 16:48:32,392 INFO L495 AbstractCegarLoop]: Abstraction has has 594 places, 627 transitions, 9382 flow [2022-11-21 16:48:32,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:32,393 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:48:32,393 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:48:32,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-11-21 16:48:32,393 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:48:32,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:48:32,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1039571604, now seen corresponding path program 78 times [2022-11-21 16:48:32,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:48:32,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509680809] [2022-11-21 16:48:32,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:48:32,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:48:32,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:48:33,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:48:33,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:48:33,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509680809] [2022-11-21 16:48:33,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509680809] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:48:33,002 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:48:33,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-21 16:48:33,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322255312] [2022-11-21 16:48:33,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:48:33,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-21 16:48:33,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:48:33,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-21 16:48:33,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-21 16:48:33,005 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:48:33,006 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 594 places, 627 transitions, 9382 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:33,006 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:48:33,006 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:48:33,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:48:35,260 INFO L130 PetriNetUnfolder]: 441/1459 cut-off events. [2022-11-21 16:48:35,260 INFO L131 PetriNetUnfolder]: For 32797/32797 co-relation queries the response was YES. [2022-11-21 16:48:35,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11775 conditions, 1459 events. 441/1459 cut-off events. For 32797/32797 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 10191 event pairs, 50 based on Foata normal form. 1/1457 useless extension candidates. Maximal degree in co-relation 11563. Up to 1017 conditions per place. [2022-11-21 16:48:35,284 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 498 selfloop transitions, 97 changer transitions 19/653 dead transitions. [2022-11-21 16:48:35,284 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 622 places, 653 transitions, 10853 flow [2022-11-21 16:48:35,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-21 16:48:35,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-21 16:48:35,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1842 transitions. [2022-11-21 16:48:35,286 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5598784194528875 [2022-11-21 16:48:35,286 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1842 transitions. [2022-11-21 16:48:35,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1842 transitions. [2022-11-21 16:48:35,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:48:35,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1842 transitions. [2022-11-21 16:48:35,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 52.628571428571426) internal successors, (1842), 35 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:35,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:35,292 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:35,292 INFO L175 Difference]: Start difference. First operand has 594 places, 627 transitions, 9382 flow. Second operand 35 states and 1842 transitions. [2022-11-21 16:48:35,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 622 places, 653 transitions, 10853 flow [2022-11-21 16:48:35,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 597 places, 653 transitions, 10396 flow, removed 149 selfloop flow, removed 25 redundant places. [2022-11-21 16:48:35,596 INFO L231 Difference]: Finished difference. Result has 604 places, 624 transitions, 9125 flow [2022-11-21 16:48:35,597 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8933, PETRI_DIFFERENCE_MINUEND_PLACES=563, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=627, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=530, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=9125, PETRI_PLACES=604, PETRI_TRANSITIONS=624} [2022-11-21 16:48:35,597 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 516 predicate places. [2022-11-21 16:48:35,598 INFO L495 AbstractCegarLoop]: Abstraction has has 604 places, 624 transitions, 9125 flow [2022-11-21 16:48:35,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:35,598 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:48:35,598 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:48:35,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-11-21 16:48:35,599 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:48:35,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:48:35,599 INFO L85 PathProgramCache]: Analyzing trace with hash -879968222, now seen corresponding path program 79 times [2022-11-21 16:48:35,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:48:35,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290348953] [2022-11-21 16:48:35,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:48:35,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:48:35,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:48:36,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:48:36,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:48:36,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290348953] [2022-11-21 16:48:36,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290348953] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:48:36,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:48:36,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-21 16:48:36,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829839924] [2022-11-21 16:48:36,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:48:36,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-21 16:48:36,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:48:36,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-21 16:48:36,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-11-21 16:48:36,262 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:48:36,263 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 604 places, 624 transitions, 9125 flow. Second operand has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:36,263 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:48:36,263 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:48:36,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:48:38,585 INFO L130 PetriNetUnfolder]: 438/1444 cut-off events. [2022-11-21 16:48:38,585 INFO L131 PetriNetUnfolder]: For 31873/31873 co-relation queries the response was YES. [2022-11-21 16:48:38,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11626 conditions, 1444 events. 438/1444 cut-off events. For 31873/31873 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 10025 event pairs, 40 based on Foata normal form. 1/1441 useless extension candidates. Maximal degree in co-relation 11411. Up to 1001 conditions per place. [2022-11-21 16:48:38,610 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 492 selfloop transitions, 100 changer transitions 22/653 dead transitions. [2022-11-21 16:48:38,610 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 633 places, 653 transitions, 10715 flow [2022-11-21 16:48:38,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-21 16:48:38,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-21 16:48:38,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 1990 transitions. [2022-11-21 16:48:38,612 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5571108622620381 [2022-11-21 16:48:38,612 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 1990 transitions. [2022-11-21 16:48:38,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 1990 transitions. [2022-11-21 16:48:38,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:48:38,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 1990 transitions. [2022-11-21 16:48:38,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 52.36842105263158) internal successors, (1990), 38 states have internal predecessors, (1990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:38,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:38,616 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:38,616 INFO L175 Difference]: Start difference. First operand has 604 places, 624 transitions, 9125 flow. Second operand 38 states and 1990 transitions. [2022-11-21 16:48:38,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 633 places, 653 transitions, 10715 flow [2022-11-21 16:48:38,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 598 places, 653 transitions, 10452 flow, removed 13 selfloop flow, removed 35 redundant places. [2022-11-21 16:48:38,956 INFO L231 Difference]: Finished difference. Result has 606 places, 621 transitions, 9118 flow [2022-11-21 16:48:38,956 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8880, PETRI_DIFFERENCE_MINUEND_PLACES=561, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=624, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=524, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=9118, PETRI_PLACES=606, PETRI_TRANSITIONS=621} [2022-11-21 16:48:38,956 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 518 predicate places. [2022-11-21 16:48:38,956 INFO L495 AbstractCegarLoop]: Abstraction has has 606 places, 621 transitions, 9118 flow [2022-11-21 16:48:38,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:38,957 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:48:38,957 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:48:38,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-11-21 16:48:38,957 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:48:38,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:48:38,957 INFO L85 PathProgramCache]: Analyzing trace with hash -2128455458, now seen corresponding path program 80 times [2022-11-21 16:48:38,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:48:38,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085536055] [2022-11-21 16:48:38,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:48:38,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:48:38,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:48:39,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:48:39,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:48:39,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085536055] [2022-11-21 16:48:39,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085536055] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:48:39,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:48:39,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:48:39,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440083647] [2022-11-21 16:48:39,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:48:39,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:48:39,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:48:39,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:48:39,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:48:39,669 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:48:39,670 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 606 places, 621 transitions, 9118 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:39,670 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:48:39,670 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:48:39,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:48:41,614 INFO L130 PetriNetUnfolder]: 436/1422 cut-off events. [2022-11-21 16:48:41,614 INFO L131 PetriNetUnfolder]: For 33285/33285 co-relation queries the response was YES. [2022-11-21 16:48:41,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11686 conditions, 1422 events. 436/1422 cut-off events. For 33285/33285 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 9750 event pairs, 37 based on Foata normal form. 1/1420 useless extension candidates. Maximal degree in co-relation 11470. Up to 958 conditions per place. [2022-11-21 16:48:41,644 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 468 selfloop transitions, 126 changer transitions 21/654 dead transitions. [2022-11-21 16:48:41,644 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 630 places, 654 transitions, 10921 flow [2022-11-21 16:48:41,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-21 16:48:41,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-21 16:48:41,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1705 transitions. [2022-11-21 16:48:41,646 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5668218085106383 [2022-11-21 16:48:41,646 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1705 transitions. [2022-11-21 16:48:41,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1705 transitions. [2022-11-21 16:48:41,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:48:41,647 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1705 transitions. [2022-11-21 16:48:41,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 53.28125) internal successors, (1705), 32 states have internal predecessors, (1705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:41,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:41,650 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:41,650 INFO L175 Difference]: Start difference. First operand has 606 places, 621 transitions, 9118 flow. Second operand 32 states and 1705 transitions. [2022-11-21 16:48:41,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 630 places, 654 transitions, 10921 flow [2022-11-21 16:48:42,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 593 places, 654 transitions, 10594 flow, removed 56 selfloop flow, removed 37 redundant places. [2022-11-21 16:48:42,018 INFO L231 Difference]: Finished difference. Result has 600 places, 623 transitions, 9277 flow [2022-11-21 16:48:42,018 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8833, PETRI_DIFFERENCE_MINUEND_PLACES=562, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=621, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=498, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=9277, PETRI_PLACES=600, PETRI_TRANSITIONS=623} [2022-11-21 16:48:42,018 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 512 predicate places. [2022-11-21 16:48:42,019 INFO L495 AbstractCegarLoop]: Abstraction has has 600 places, 623 transitions, 9277 flow [2022-11-21 16:48:42,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:42,019 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:48:42,019 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:48:42,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-11-21 16:48:42,019 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:48:42,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:48:42,020 INFO L85 PathProgramCache]: Analyzing trace with hash -962888412, now seen corresponding path program 81 times [2022-11-21 16:48:42,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:48:42,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514100572] [2022-11-21 16:48:42,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:48:42,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:48:42,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:48:42,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:48:42,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:48:42,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514100572] [2022-11-21 16:48:42,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514100572] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:48:42,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:48:42,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:48:42,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372488836] [2022-11-21 16:48:42,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:48:42,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:48:42,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:48:42,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:48:42,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:48:42,486 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:48:42,487 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 600 places, 623 transitions, 9277 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:42,487 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:48:42,487 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:48:42,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:48:44,497 INFO L130 PetriNetUnfolder]: 433/1410 cut-off events. [2022-11-21 16:48:44,497 INFO L131 PetriNetUnfolder]: For 31965/31965 co-relation queries the response was YES. [2022-11-21 16:48:44,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11563 conditions, 1410 events. 433/1410 cut-off events. For 31965/31965 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 9671 event pairs, 40 based on Foata normal form. 1/1408 useless extension candidates. Maximal degree in co-relation 11348. Up to 1012 conditions per place. [2022-11-21 16:48:44,523 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 507 selfloop transitions, 84 changer transitions 19/649 dead transitions. [2022-11-21 16:48:44,523 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 626 places, 649 transitions, 10744 flow [2022-11-21 16:48:44,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-21 16:48:44,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-21 16:48:44,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1792 transitions. [2022-11-21 16:48:44,526 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5607008760951189 [2022-11-21 16:48:44,526 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1792 transitions. [2022-11-21 16:48:44,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1792 transitions. [2022-11-21 16:48:44,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:48:44,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1792 transitions. [2022-11-21 16:48:44,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 52.705882352941174) internal successors, (1792), 34 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:44,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:44,529 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:44,529 INFO L175 Difference]: Start difference. First operand has 600 places, 623 transitions, 9277 flow. Second operand 34 states and 1792 transitions. [2022-11-21 16:48:44,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 626 places, 649 transitions, 10744 flow [2022-11-21 16:48:44,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 597 places, 649 transitions, 10336 flow, removed 95 selfloop flow, removed 29 redundant places. [2022-11-21 16:48:44,845 INFO L231 Difference]: Finished difference. Result has 604 places, 620 transitions, 9032 flow [2022-11-21 16:48:44,845 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8891, PETRI_DIFFERENCE_MINUEND_PLACES=564, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=623, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=539, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=9032, PETRI_PLACES=604, PETRI_TRANSITIONS=620} [2022-11-21 16:48:44,845 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 516 predicate places. [2022-11-21 16:48:44,846 INFO L495 AbstractCegarLoop]: Abstraction has has 604 places, 620 transitions, 9032 flow [2022-11-21 16:48:44,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:44,846 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:48:44,846 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:48:44,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-11-21 16:48:44,846 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:48:44,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:48:44,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1810588844, now seen corresponding path program 82 times [2022-11-21 16:48:44,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:48:44,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487159145] [2022-11-21 16:48:44,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:48:44,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:48:44,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:48:45,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:48:45,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:48:45,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487159145] [2022-11-21 16:48:45,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487159145] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:48:45,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:48:45,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-21 16:48:45,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679521914] [2022-11-21 16:48:45,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:48:45,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-21 16:48:45,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:48:45,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-21 16:48:45,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-11-21 16:48:45,440 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:48:45,441 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 604 places, 620 transitions, 9032 flow. Second operand has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:45,441 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:48:45,441 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:48:45,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:48:47,614 INFO L130 PetriNetUnfolder]: 428/1386 cut-off events. [2022-11-21 16:48:47,614 INFO L131 PetriNetUnfolder]: For 28223/28223 co-relation queries the response was YES. [2022-11-21 16:48:47,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11138 conditions, 1386 events. 428/1386 cut-off events. For 28223/28223 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 9409 event pairs, 50 based on Foata normal form. 1/1384 useless extension candidates. Maximal degree in co-relation 10923. Up to 986 conditions per place. [2022-11-21 16:48:47,637 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 490 selfloop transitions, 72 changer transitions 38/639 dead transitions. [2022-11-21 16:48:47,637 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 630 places, 639 transitions, 10310 flow [2022-11-21 16:48:47,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-21 16:48:47,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-21 16:48:47,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1834 transitions. [2022-11-21 16:48:47,639 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5574468085106383 [2022-11-21 16:48:47,639 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1834 transitions. [2022-11-21 16:48:47,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1834 transitions. [2022-11-21 16:48:47,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:48:47,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1834 transitions. [2022-11-21 16:48:47,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 52.4) internal successors, (1834), 35 states have internal predecessors, (1834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:47,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:47,643 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:47,643 INFO L175 Difference]: Start difference. First operand has 604 places, 620 transitions, 9032 flow. Second operand 35 states and 1834 transitions. [2022-11-21 16:48:47,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 630 places, 639 transitions, 10310 flow [2022-11-21 16:48:47,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 595 places, 639 transitions, 10066 flow, removed 13 selfloop flow, removed 35 redundant places. [2022-11-21 16:48:47,955 INFO L231 Difference]: Finished difference. Result has 599 places, 592 transitions, 8529 flow [2022-11-21 16:48:47,956 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8794, PETRI_DIFFERENCE_MINUEND_PLACES=561, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=620, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=548, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=8529, PETRI_PLACES=599, PETRI_TRANSITIONS=592} [2022-11-21 16:48:47,956 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 511 predicate places. [2022-11-21 16:48:47,956 INFO L495 AbstractCegarLoop]: Abstraction has has 599 places, 592 transitions, 8529 flow [2022-11-21 16:48:47,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:47,956 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:48:47,957 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:48:47,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-11-21 16:48:47,957 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:48:47,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:48:47,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1384972958, now seen corresponding path program 83 times [2022-11-21 16:48:47,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:48:47,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475528867] [2022-11-21 16:48:47,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:48:47,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:48:47,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:48:48,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:48:48,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:48:48,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475528867] [2022-11-21 16:48:48,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475528867] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:48:48,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:48:48,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:48:48,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790779077] [2022-11-21 16:48:48,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:48:48,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:48:48,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:48:48,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:48:48,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:48:48,437 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:48:48,438 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 599 places, 592 transitions, 8529 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:48,438 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:48:48,438 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:48:48,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:48:50,317 INFO L130 PetriNetUnfolder]: 424/1365 cut-off events. [2022-11-21 16:48:50,317 INFO L131 PetriNetUnfolder]: For 27183/27183 co-relation queries the response was YES. [2022-11-21 16:48:50,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10802 conditions, 1365 events. 424/1365 cut-off events. For 27183/27183 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 9183 event pairs, 43 based on Foata normal form. 1/1363 useless extension candidates. Maximal degree in co-relation 10592. Up to 945 conditions per place. [2022-11-21 16:48:50,343 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 458 selfloop transitions, 105 changer transitions 19/621 dead transitions. [2022-11-21 16:48:50,343 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 602 places, 621 transitions, 9960 flow [2022-11-21 16:48:50,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-21 16:48:50,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-21 16:48:50,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1850 transitions. [2022-11-21 16:48:50,346 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5623100303951368 [2022-11-21 16:48:50,346 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1850 transitions. [2022-11-21 16:48:50,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1850 transitions. [2022-11-21 16:48:50,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:48:50,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1850 transitions. [2022-11-21 16:48:50,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 52.857142857142854) internal successors, (1850), 35 states have internal predecessors, (1850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:50,349 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:50,350 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:50,350 INFO L175 Difference]: Start difference. First operand has 599 places, 592 transitions, 8529 flow. Second operand 35 states and 1850 transitions. [2022-11-21 16:48:50,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 602 places, 621 transitions, 9960 flow [2022-11-21 16:48:50,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 557 places, 621 transitions, 9575 flow, removed 39 selfloop flow, removed 45 redundant places. [2022-11-21 16:48:50,695 INFO L231 Difference]: Finished difference. Result has 564 places, 589 transitions, 8357 flow [2022-11-21 16:48:50,695 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8158, PETRI_DIFFERENCE_MINUEND_PLACES=523, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=592, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=487, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=8357, PETRI_PLACES=564, PETRI_TRANSITIONS=589} [2022-11-21 16:48:50,696 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 476 predicate places. [2022-11-21 16:48:50,696 INFO L495 AbstractCegarLoop]: Abstraction has has 564 places, 589 transitions, 8357 flow [2022-11-21 16:48:50,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:50,696 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:48:50,696 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:48:50,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2022-11-21 16:48:50,696 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:48:50,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:48:50,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1947784342, now seen corresponding path program 84 times [2022-11-21 16:48:50,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:48:50,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025181403] [2022-11-21 16:48:50,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:48:50,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:48:50,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:48:51,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:48:51,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:48:51,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025181403] [2022-11-21 16:48:51,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025181403] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:48:51,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:48:51,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:48:51,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461373102] [2022-11-21 16:48:51,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:48:51,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:48:51,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:48:51,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:48:51,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:48:51,183 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:48:51,184 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 564 places, 589 transitions, 8357 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:51,184 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:48:51,184 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:48:51,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:48:53,244 INFO L130 PetriNetUnfolder]: 430/1371 cut-off events. [2022-11-21 16:48:53,244 INFO L131 PetriNetUnfolder]: For 27027/27027 co-relation queries the response was YES. [2022-11-21 16:48:53,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10885 conditions, 1371 events. 430/1371 cut-off events. For 27027/27027 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 9167 event pairs, 52 based on Foata normal form. 1/1369 useless extension candidates. Maximal degree in co-relation 10685. Up to 934 conditions per place. [2022-11-21 16:48:53,268 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 452 selfloop transitions, 118 changer transitions 22/631 dead transitions. [2022-11-21 16:48:53,268 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 593 places, 631 transitions, 10197 flow [2022-11-21 16:48:53,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-21 16:48:53,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-21 16:48:53,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2008 transitions. [2022-11-21 16:48:53,271 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5621500559910414 [2022-11-21 16:48:53,271 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2008 transitions. [2022-11-21 16:48:53,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2008 transitions. [2022-11-21 16:48:53,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:48:53,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2008 transitions. [2022-11-21 16:48:53,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 52.8421052631579) internal successors, (2008), 38 states have internal predecessors, (2008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:53,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:53,275 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:53,275 INFO L175 Difference]: Start difference. First operand has 564 places, 589 transitions, 8357 flow. Second operand 38 states and 2008 transitions. [2022-11-21 16:48:53,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 593 places, 631 transitions, 10197 flow [2022-11-21 16:48:53,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 558 places, 631 transitions, 9903 flow, removed 24 selfloop flow, removed 35 redundant places. [2022-11-21 16:48:53,538 INFO L231 Difference]: Finished difference. Result has 569 places, 594 transitions, 8551 flow [2022-11-21 16:48:53,539 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8087, PETRI_DIFFERENCE_MINUEND_PLACES=521, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=589, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=8551, PETRI_PLACES=569, PETRI_TRANSITIONS=594} [2022-11-21 16:48:53,539 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 481 predicate places. [2022-11-21 16:48:53,539 INFO L495 AbstractCegarLoop]: Abstraction has has 569 places, 594 transitions, 8551 flow [2022-11-21 16:48:53,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:53,539 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:48:53,540 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:48:53,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2022-11-21 16:48:53,540 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:48:53,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:48:53,540 INFO L85 PathProgramCache]: Analyzing trace with hash -657749404, now seen corresponding path program 85 times [2022-11-21 16:48:53,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:48:53,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194888016] [2022-11-21 16:48:53,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:48:53,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:48:53,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:48:54,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:48:54,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:48:54,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194888016] [2022-11-21 16:48:54,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194888016] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:48:54,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:48:54,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:48:54,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425215068] [2022-11-21 16:48:54,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:48:54,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:48:54,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:48:54,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:48:54,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:48:54,018 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:48:54,018 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 569 places, 594 transitions, 8551 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:54,018 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:48:54,019 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:48:54,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:48:55,921 INFO L130 PetriNetUnfolder]: 423/1376 cut-off events. [2022-11-21 16:48:55,921 INFO L131 PetriNetUnfolder]: For 27670/27670 co-relation queries the response was YES. [2022-11-21 16:48:55,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10859 conditions, 1376 events. 423/1376 cut-off events. For 27670/27670 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 9309 event pairs, 51 based on Foata normal form. 1/1374 useless extension candidates. Maximal degree in co-relation 10656. Up to 946 conditions per place. [2022-11-21 16:48:55,947 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 456 selfloop transitions, 109 changer transitions 19/623 dead transitions. [2022-11-21 16:48:55,947 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 598 places, 623 transitions, 9990 flow [2022-11-21 16:48:55,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-21 16:48:55,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-21 16:48:55,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1899 transitions. [2022-11-21 16:48:55,950 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5611702127659575 [2022-11-21 16:48:55,950 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1899 transitions. [2022-11-21 16:48:55,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1899 transitions. [2022-11-21 16:48:55,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:48:55,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1899 transitions. [2022-11-21 16:48:55,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 52.75) internal successors, (1899), 36 states have internal predecessors, (1899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:55,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:55,953 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:55,953 INFO L175 Difference]: Start difference. First operand has 569 places, 594 transitions, 8551 flow. Second operand 36 states and 1899 transitions. [2022-11-21 16:48:55,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 598 places, 623 transitions, 9990 flow [2022-11-21 16:48:56,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 567 places, 623 transitions, 9750 flow, removed 49 selfloop flow, removed 31 redundant places. [2022-11-21 16:48:56,206 INFO L231 Difference]: Finished difference. Result has 574 places, 591 transitions, 8529 flow [2022-11-21 16:48:56,206 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8319, PETRI_DIFFERENCE_MINUEND_PLACES=532, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=594, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=8529, PETRI_PLACES=574, PETRI_TRANSITIONS=591} [2022-11-21 16:48:56,207 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 486 predicate places. [2022-11-21 16:48:56,207 INFO L495 AbstractCegarLoop]: Abstraction has has 574 places, 591 transitions, 8529 flow [2022-11-21 16:48:56,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:56,207 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:48:56,207 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:48:56,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2022-11-21 16:48:56,208 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:48:56,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:48:56,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1869742924, now seen corresponding path program 86 times [2022-11-21 16:48:56,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:48:56,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857679630] [2022-11-21 16:48:56,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:48:56,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:48:56,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:48:56,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:48:56,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:48:56,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857679630] [2022-11-21 16:48:56,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857679630] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:48:56,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:48:56,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:48:56,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655700897] [2022-11-21 16:48:56,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:48:56,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:48:56,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:48:56,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:48:56,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:48:56,809 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:48:56,810 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 574 places, 591 transitions, 8529 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:56,810 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:48:56,810 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:48:56,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:48:58,749 INFO L130 PetriNetUnfolder]: 422/1381 cut-off events. [2022-11-21 16:48:58,749 INFO L131 PetriNetUnfolder]: For 28764/28764 co-relation queries the response was YES. [2022-11-21 16:48:58,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10967 conditions, 1381 events. 422/1381 cut-off events. For 28764/28764 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 9357 event pairs, 42 based on Foata normal form. 1/1379 useless extension candidates. Maximal degree in co-relation 10762. Up to 892 conditions per place. [2022-11-21 16:48:58,773 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 431 selfloop transitions, 146 changer transitions 23/639 dead transitions. [2022-11-21 16:48:58,774 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 599 places, 639 transitions, 10493 flow [2022-11-21 16:48:58,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-21 16:48:58,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-21 16:48:58,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1804 transitions. [2022-11-21 16:48:58,776 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5644555694618273 [2022-11-21 16:48:58,776 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1804 transitions. [2022-11-21 16:48:58,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1804 transitions. [2022-11-21 16:48:58,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:48:58,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1804 transitions. [2022-11-21 16:48:58,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.05882352941177) internal successors, (1804), 34 states have internal predecessors, (1804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:58,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:58,781 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:58,781 INFO L175 Difference]: Start difference. First operand has 574 places, 591 transitions, 8529 flow. Second operand 34 states and 1804 transitions. [2022-11-21 16:48:58,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 599 places, 639 transitions, 10493 flow [2022-11-21 16:48:59,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 561 places, 639 transitions, 10144 flow, removed 17 selfloop flow, removed 38 redundant places. [2022-11-21 16:48:59,073 INFO L231 Difference]: Finished difference. Result has 568 places, 598 transitions, 8751 flow [2022-11-21 16:48:59,074 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8203, PETRI_DIFFERENCE_MINUEND_PLACES=528, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=591, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=8751, PETRI_PLACES=568, PETRI_TRANSITIONS=598} [2022-11-21 16:48:59,074 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 480 predicate places. [2022-11-21 16:48:59,074 INFO L495 AbstractCegarLoop]: Abstraction has has 568 places, 598 transitions, 8751 flow [2022-11-21 16:48:59,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:59,074 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:48:59,075 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:48:59,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2022-11-21 16:48:59,075 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:48:59,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:48:59,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1734526900, now seen corresponding path program 87 times [2022-11-21 16:48:59,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:48:59,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389597144] [2022-11-21 16:48:59,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:48:59,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:48:59,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:48:59,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:48:59,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:48:59,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389597144] [2022-11-21 16:48:59,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389597144] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:48:59,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:48:59,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:48:59,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320396704] [2022-11-21 16:48:59,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:48:59,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:48:59,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:48:59,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:48:59,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:48:59,625 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:48:59,626 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 568 places, 598 transitions, 8751 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:59,626 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:48:59,626 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:48:59,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:49:01,497 INFO L130 PetriNetUnfolder]: 423/1353 cut-off events. [2022-11-21 16:49:01,497 INFO L131 PetriNetUnfolder]: For 29665/29665 co-relation queries the response was YES. [2022-11-21 16:49:01,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10983 conditions, 1353 events. 423/1353 cut-off events. For 29665/29665 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 9025 event pairs, 51 based on Foata normal form. 1/1351 useless extension candidates. Maximal degree in co-relation 10780. Up to 882 conditions per place. [2022-11-21 16:49:01,519 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 428 selfloop transitions, 149 changer transitions 21/637 dead transitions. [2022-11-21 16:49:01,519 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 597 places, 637 transitions, 10553 flow [2022-11-21 16:49:01,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-21 16:49:01,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-21 16:49:01,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1858 transitions. [2022-11-21 16:49:01,522 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.564741641337386 [2022-11-21 16:49:01,522 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1858 transitions. [2022-11-21 16:49:01,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1858 transitions. [2022-11-21 16:49:01,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:49:01,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1858 transitions. [2022-11-21 16:49:01,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 53.08571428571429) internal successors, (1858), 35 states have internal predecessors, (1858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:01,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:01,525 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:01,525 INFO L175 Difference]: Start difference. First operand has 568 places, 598 transitions, 8751 flow. Second operand 35 states and 1858 transitions. [2022-11-21 16:49:01,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 597 places, 637 transitions, 10553 flow [2022-11-21 16:49:01,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 569 places, 637 transitions, 10166 flow, removed 104 selfloop flow, removed 28 redundant places. [2022-11-21 16:49:01,801 INFO L231 Difference]: Finished difference. Result has 576 places, 599 transitions, 8843 flow [2022-11-21 16:49:01,802 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8428, PETRI_DIFFERENCE_MINUEND_PLACES=535, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=598, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=8843, PETRI_PLACES=576, PETRI_TRANSITIONS=599} [2022-11-21 16:49:01,802 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 488 predicate places. [2022-11-21 16:49:01,802 INFO L495 AbstractCegarLoop]: Abstraction has has 576 places, 599 transitions, 8843 flow [2022-11-21 16:49:01,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:01,803 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:49:01,803 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:49:01,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2022-11-21 16:49:01,803 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:49:01,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:49:01,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1299867540, now seen corresponding path program 88 times [2022-11-21 16:49:01,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:49:01,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385212990] [2022-11-21 16:49:01,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:49:01,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:49:01,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:49:02,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:49:02,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:49:02,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385212990] [2022-11-21 16:49:02,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385212990] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:49:02,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:49:02,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:49:02,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325873509] [2022-11-21 16:49:02,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:49:02,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:49:02,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:49:02,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:49:02,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:49:02,286 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:49:02,287 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 576 places, 599 transitions, 8843 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:02,287 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:49:02,287 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:49:02,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:49:04,308 INFO L130 PetriNetUnfolder]: 417/1336 cut-off events. [2022-11-21 16:49:04,308 INFO L131 PetriNetUnfolder]: For 27140/27140 co-relation queries the response was YES. [2022-11-21 16:49:04,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10715 conditions, 1336 events. 417/1336 cut-off events. For 27140/27140 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 8819 event pairs, 40 based on Foata normal form. 1/1333 useless extension candidates. Maximal degree in co-relation 10510. Up to 852 conditions per place. [2022-11-21 16:49:04,331 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 409 selfloop transitions, 139 changer transitions 43/630 dead transitions. [2022-11-21 16:49:04,331 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 608 places, 630 transitions, 10308 flow [2022-11-21 16:49:04,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-21 16:49:04,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-21 16:49:04,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2006 transitions. [2022-11-21 16:49:04,335 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5615901455767077 [2022-11-21 16:49:04,335 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2006 transitions. [2022-11-21 16:49:04,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2006 transitions. [2022-11-21 16:49:04,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:49:04,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2006 transitions. [2022-11-21 16:49:04,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 52.78947368421053) internal successors, (2006), 38 states have internal predecessors, (2006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:04,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:04,341 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:04,341 INFO L175 Difference]: Start difference. First operand has 576 places, 599 transitions, 8843 flow. Second operand 38 states and 2006 transitions. [2022-11-21 16:49:04,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 608 places, 630 transitions, 10308 flow [2022-11-21 16:49:04,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 574 places, 630 transitions, 9983 flow, removed 45 selfloop flow, removed 34 redundant places. [2022-11-21 16:49:04,640 INFO L231 Difference]: Finished difference. Result has 582 places, 571 transitions, 8437 flow [2022-11-21 16:49:04,640 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8532, PETRI_DIFFERENCE_MINUEND_PLACES=537, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=8437, PETRI_PLACES=582, PETRI_TRANSITIONS=571} [2022-11-21 16:49:04,641 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 494 predicate places. [2022-11-21 16:49:04,641 INFO L495 AbstractCegarLoop]: Abstraction has has 582 places, 571 transitions, 8437 flow [2022-11-21 16:49:04,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:04,641 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:49:04,641 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:49:04,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2022-11-21 16:49:04,641 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:49:04,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:49:04,642 INFO L85 PathProgramCache]: Analyzing trace with hash 310374354, now seen corresponding path program 89 times [2022-11-21 16:49:04,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:49:04,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243378232] [2022-11-21 16:49:04,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:49:04,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:49:04,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:49:05,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:49:05,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:49:05,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243378232] [2022-11-21 16:49:05,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243378232] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:49:05,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:49:05,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:49:05,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67427299] [2022-11-21 16:49:05,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:49:05,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:49:05,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:49:05,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:49:05,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:49:05,205 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:49:05,206 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 582 places, 571 transitions, 8437 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:05,206 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:49:05,206 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:49:05,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:49:07,007 INFO L130 PetriNetUnfolder]: 405/1314 cut-off events. [2022-11-21 16:49:07,007 INFO L131 PetriNetUnfolder]: For 27360/27360 co-relation queries the response was YES. [2022-11-21 16:49:07,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10685 conditions, 1314 events. 405/1314 cut-off events. For 27360/27360 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 8723 event pairs, 43 based on Foata normal form. 1/1313 useless extension candidates. Maximal degree in co-relation 10480. Up to 881 conditions per place. [2022-11-21 16:49:07,031 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 434 selfloop transitions, 109 changer transitions 23/605 dead transitions. [2022-11-21 16:49:07,031 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 603 places, 605 transitions, 10095 flow [2022-11-21 16:49:07,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-21 16:49:07,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-21 16:49:07,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1755 transitions. [2022-11-21 16:49:07,033 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5657640232108317 [2022-11-21 16:49:07,033 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1755 transitions. [2022-11-21 16:49:07,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1755 transitions. [2022-11-21 16:49:07,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:49:07,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1755 transitions. [2022-11-21 16:49:07,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 53.18181818181818) internal successors, (1755), 33 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:07,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:07,036 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:07,036 INFO L175 Difference]: Start difference. First operand has 582 places, 571 transitions, 8437 flow. Second operand 33 states and 1755 transitions. [2022-11-21 16:49:07,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 603 places, 605 transitions, 10095 flow [2022-11-21 16:49:07,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 560 places, 605 transitions, 9570 flow, removed 72 selfloop flow, removed 43 redundant places. [2022-11-21 16:49:07,320 INFO L231 Difference]: Finished difference. Result has 567 places, 571 transitions, 8267 flow [2022-11-21 16:49:07,321 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=7934, PETRI_DIFFERENCE_MINUEND_PLACES=528, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=571, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=463, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=8267, PETRI_PLACES=567, PETRI_TRANSITIONS=571} [2022-11-21 16:49:07,321 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 479 predicate places. [2022-11-21 16:49:07,321 INFO L495 AbstractCegarLoop]: Abstraction has has 567 places, 571 transitions, 8267 flow [2022-11-21 16:49:07,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:07,321 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:49:07,322 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:49:07,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2022-11-21 16:49:07,322 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:49:07,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:49:07,322 INFO L85 PathProgramCache]: Analyzing trace with hash -596217238, now seen corresponding path program 90 times [2022-11-21 16:49:07,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:49:07,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849479498] [2022-11-21 16:49:07,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:49:07,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:49:07,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:49:07,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:49:07,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:49:07,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849479498] [2022-11-21 16:49:07,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849479498] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:49:07,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:49:07,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-21 16:49:07,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343935163] [2022-11-21 16:49:07,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:49:07,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-21 16:49:07,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:49:07,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-21 16:49:07,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-21 16:49:07,993 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:49:07,993 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 567 places, 571 transitions, 8267 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:07,994 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:49:07,994 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:49:07,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:49:10,321 INFO L130 PetriNetUnfolder]: 407/1309 cut-off events. [2022-11-21 16:49:10,321 INFO L131 PetriNetUnfolder]: For 29227/29227 co-relation queries the response was YES. [2022-11-21 16:49:10,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10672 conditions, 1309 events. 407/1309 cut-off events. For 29227/29227 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 8664 event pairs, 36 based on Foata normal form. 1/1309 useless extension candidates. Maximal degree in co-relation 10472. Up to 832 conditions per place. [2022-11-21 16:49:10,343 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 378 selfloop transitions, 175 changer transitions 22/614 dead transitions. [2022-11-21 16:49:10,344 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 608 places, 614 transitions, 10149 flow [2022-11-21 16:49:10,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-21 16:49:10,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2022-11-21 16:49:10,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 2465 transitions. [2022-11-21 16:49:10,346 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5579447713897692 [2022-11-21 16:49:10,347 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 2465 transitions. [2022-11-21 16:49:10,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 2465 transitions. [2022-11-21 16:49:10,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:49:10,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 2465 transitions. [2022-11-21 16:49:10,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 52.4468085106383) internal successors, (2465), 47 states have internal predecessors, (2465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:10,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 94.0) internal successors, (4512), 48 states have internal predecessors, (4512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:10,351 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 94.0) internal successors, (4512), 48 states have internal predecessors, (4512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:10,351 INFO L175 Difference]: Start difference. First operand has 567 places, 571 transitions, 8267 flow. Second operand 47 states and 2465 transitions. [2022-11-21 16:49:10,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 608 places, 614 transitions, 10149 flow [2022-11-21 16:49:10,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 576 places, 614 transitions, 9849 flow, removed 57 selfloop flow, removed 32 redundant places. [2022-11-21 16:49:10,637 INFO L231 Difference]: Finished difference. Result has 587 places, 577 transitions, 8648 flow [2022-11-21 16:49:10,637 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=7995, PETRI_DIFFERENCE_MINUEND_PLACES=530, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=571, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=8648, PETRI_PLACES=587, PETRI_TRANSITIONS=577} [2022-11-21 16:49:10,638 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 499 predicate places. [2022-11-21 16:49:10,638 INFO L495 AbstractCegarLoop]: Abstraction has has 587 places, 577 transitions, 8648 flow [2022-11-21 16:49:10,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:10,638 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:49:10,638 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:49:10,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2022-11-21 16:49:10,638 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:49:10,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:49:10,639 INFO L85 PathProgramCache]: Analyzing trace with hash 618312006, now seen corresponding path program 91 times [2022-11-21 16:49:10,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:49:10,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541369317] [2022-11-21 16:49:10,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:49:10,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:49:10,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:49:11,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:49:11,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:49:11,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541369317] [2022-11-21 16:49:11,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541369317] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:49:11,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:49:11,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-21 16:49:11,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429461491] [2022-11-21 16:49:11,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:49:11,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-21 16:49:11,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:49:11,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-21 16:49:11,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-21 16:49:11,281 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:49:11,282 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 587 places, 577 transitions, 8648 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:11,282 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:49:11,282 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:49:11,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:49:13,711 INFO L130 PetriNetUnfolder]: 401/1301 cut-off events. [2022-11-21 16:49:13,711 INFO L131 PetriNetUnfolder]: For 28464/28464 co-relation queries the response was YES. [2022-11-21 16:49:13,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10723 conditions, 1301 events. 401/1301 cut-off events. For 28464/28464 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 8645 event pairs, 43 based on Foata normal form. 1/1300 useless extension candidates. Maximal degree in co-relation 10520. Up to 851 conditions per place. [2022-11-21 16:49:13,730 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 389 selfloop transitions, 158 changer transitions 22/608 dead transitions. [2022-11-21 16:49:13,730 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 625 places, 608 transitions, 10098 flow [2022-11-21 16:49:13,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-21 16:49:13,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-11-21 16:49:13,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 2358 transitions. [2022-11-21 16:49:13,733 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5574468085106383 [2022-11-21 16:49:13,733 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 2358 transitions. [2022-11-21 16:49:13,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 2358 transitions. [2022-11-21 16:49:13,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:49:13,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 2358 transitions. [2022-11-21 16:49:13,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 52.4) internal successors, (2358), 45 states have internal predecessors, (2358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:13,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 94.0) internal successors, (4324), 46 states have internal predecessors, (4324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:13,737 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 94.0) internal successors, (4324), 46 states have internal predecessors, (4324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:13,737 INFO L175 Difference]: Start difference. First operand has 587 places, 577 transitions, 8648 flow. Second operand 45 states and 2358 transitions. [2022-11-21 16:49:13,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 625 places, 608 transitions, 10098 flow [2022-11-21 16:49:14,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 585 places, 608 transitions, 9771 flow, removed 60 selfloop flow, removed 40 redundant places. [2022-11-21 16:49:14,031 INFO L231 Difference]: Finished difference. Result has 592 places, 572 transitions, 8653 flow [2022-11-21 16:49:14,031 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8338, PETRI_DIFFERENCE_MINUEND_PLACES=541, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=577, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=8653, PETRI_PLACES=592, PETRI_TRANSITIONS=572} [2022-11-21 16:49:14,032 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 504 predicate places. [2022-11-21 16:49:14,032 INFO L495 AbstractCegarLoop]: Abstraction has has 592 places, 572 transitions, 8653 flow [2022-11-21 16:49:14,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:14,032 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:49:14,032 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:49:14,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2022-11-21 16:49:14,033 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:49:14,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:49:14,033 INFO L85 PathProgramCache]: Analyzing trace with hash 944180584, now seen corresponding path program 92 times [2022-11-21 16:49:14,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:49:14,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403953739] [2022-11-21 16:49:14,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:49:14,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:49:14,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:49:14,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:49:14,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:49:14,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403953739] [2022-11-21 16:49:14,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403953739] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:49:14,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:49:14,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:49:14,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226092802] [2022-11-21 16:49:14,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:49:14,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:49:14,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:49:14,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:49:14,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:49:14,675 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:49:14,676 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 592 places, 572 transitions, 8653 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:14,676 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:49:14,676 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:49:14,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:49:17,000 INFO L130 PetriNetUnfolder]: 406/1315 cut-off events. [2022-11-21 16:49:17,000 INFO L131 PetriNetUnfolder]: For 29971/29971 co-relation queries the response was YES. [2022-11-21 16:49:17,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11020 conditions, 1315 events. 406/1315 cut-off events. For 29971/29971 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 8742 event pairs, 42 based on Foata normal form. 1/1314 useless extension candidates. Maximal degree in co-relation 10815. Up to 757 conditions per place. [2022-11-21 16:49:17,024 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 334 selfloop transitions, 230 changer transitions 21/624 dead transitions. [2022-11-21 16:49:17,024 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 628 places, 624 transitions, 10807 flow [2022-11-21 16:49:17,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-11-21 16:49:17,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-11-21 16:49:17,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 2423 transitions. [2022-11-21 16:49:17,027 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5603607770582794 [2022-11-21 16:49:17,027 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 2423 transitions. [2022-11-21 16:49:17,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 2423 transitions. [2022-11-21 16:49:17,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:49:17,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 2423 transitions. [2022-11-21 16:49:17,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 52.67391304347826) internal successors, (2423), 46 states have internal predecessors, (2423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:17,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 94.0) internal successors, (4418), 47 states have internal predecessors, (4418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:17,031 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 94.0) internal successors, (4418), 47 states have internal predecessors, (4418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:17,031 INFO L175 Difference]: Start difference. First operand has 592 places, 572 transitions, 8653 flow. Second operand 46 states and 2423 transitions. [2022-11-21 16:49:17,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 628 places, 624 transitions, 10807 flow [2022-11-21 16:49:17,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 582 places, 624 transitions, 10327 flow, removed 24 selfloop flow, removed 46 redundant places. [2022-11-21 16:49:17,324 INFO L231 Difference]: Finished difference. Result has 591 places, 582 transitions, 9124 flow [2022-11-21 16:49:17,324 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8208, PETRI_DIFFERENCE_MINUEND_PLACES=537, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=221, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=9124, PETRI_PLACES=591, PETRI_TRANSITIONS=582} [2022-11-21 16:49:17,325 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 503 predicate places. [2022-11-21 16:49:17,325 INFO L495 AbstractCegarLoop]: Abstraction has has 591 places, 582 transitions, 9124 flow [2022-11-21 16:49:17,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:17,325 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:49:17,325 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:49:17,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2022-11-21 16:49:17,326 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:49:17,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:49:17,326 INFO L85 PathProgramCache]: Analyzing trace with hash 196111776, now seen corresponding path program 93 times [2022-11-21 16:49:17,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:49:17,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600627406] [2022-11-21 16:49:17,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:49:17,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:49:17,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:49:17,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:49:17,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:49:17,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600627406] [2022-11-21 16:49:17,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600627406] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:49:17,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:49:17,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:49:17,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747611257] [2022-11-21 16:49:17,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:49:17,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:49:17,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:49:17,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:49:17,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:49:17,885 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:49:17,886 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 591 places, 582 transitions, 9124 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:17,886 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:49:17,886 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:49:17,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:49:20,072 INFO L130 PetriNetUnfolder]: 401/1315 cut-off events. [2022-11-21 16:49:20,072 INFO L131 PetriNetUnfolder]: For 30550/30550 co-relation queries the response was YES. [2022-11-21 16:49:20,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11064 conditions, 1315 events. 401/1315 cut-off events. For 30550/30550 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 8832 event pairs, 40 based on Foata normal form. 1/1314 useless extension candidates. Maximal degree in co-relation 10859. Up to 790 conditions per place. [2022-11-21 16:49:20,096 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 359 selfloop transitions, 193 changer transitions 27/618 dead transitions. [2022-11-21 16:49:20,096 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 627 places, 618 transitions, 10720 flow [2022-11-21 16:49:20,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-21 16:49:20,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-11-21 16:49:20,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 2264 transitions. [2022-11-21 16:49:20,099 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5601187530925285 [2022-11-21 16:49:20,099 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 2264 transitions. [2022-11-21 16:49:20,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 2264 transitions. [2022-11-21 16:49:20,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:49:20,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 2264 transitions. [2022-11-21 16:49:20,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 52.651162790697676) internal successors, (2264), 43 states have internal predecessors, (2264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:20,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 94.0) internal successors, (4136), 44 states have internal predecessors, (4136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:20,104 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 94.0) internal successors, (4136), 44 states have internal predecessors, (4136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:20,104 INFO L175 Difference]: Start difference. First operand has 591 places, 582 transitions, 9124 flow. Second operand 43 states and 2264 transitions. [2022-11-21 16:49:20,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 627 places, 618 transitions, 10720 flow [2022-11-21 16:49:20,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 593 places, 618 transitions, 10248 flow, removed 127 selfloop flow, removed 34 redundant places. [2022-11-21 16:49:20,416 INFO L231 Difference]: Finished difference. Result has 600 places, 574 transitions, 9102 flow [2022-11-21 16:49:20,417 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8684, PETRI_DIFFERENCE_MINUEND_PLACES=551, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=582, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=9102, PETRI_PLACES=600, PETRI_TRANSITIONS=574} [2022-11-21 16:49:20,417 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 512 predicate places. [2022-11-21 16:49:20,417 INFO L495 AbstractCegarLoop]: Abstraction has has 600 places, 574 transitions, 9102 flow [2022-11-21 16:49:20,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:20,417 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:49:20,418 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:49:20,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2022-11-21 16:49:20,418 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:49:20,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:49:20,418 INFO L85 PathProgramCache]: Analyzing trace with hash 984579434, now seen corresponding path program 94 times [2022-11-21 16:49:20,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:49:20,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894634493] [2022-11-21 16:49:20,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:49:20,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:49:20,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:49:20,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:49:20,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:49:20,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894634493] [2022-11-21 16:49:20,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894634493] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:49:20,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:49:20,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:49:20,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235290851] [2022-11-21 16:49:20,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:49:20,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:49:20,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:49:20,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:49:20,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:49:20,920 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:49:20,920 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 600 places, 574 transitions, 9102 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:20,920 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:49:20,920 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:49:20,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:49:23,090 INFO L130 PetriNetUnfolder]: 414/1351 cut-off events. [2022-11-21 16:49:23,090 INFO L131 PetriNetUnfolder]: For 31190/31190 co-relation queries the response was YES. [2022-11-21 16:49:23,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11452 conditions, 1351 events. 414/1351 cut-off events. For 31190/31190 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 9089 event pairs, 42 based on Foata normal form. 1/1350 useless extension candidates. Maximal degree in co-relation 11244. Up to 830 conditions per place. [2022-11-21 16:49:23,112 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 406 selfloop transitions, 187 changer transitions 26/658 dead transitions. [2022-11-21 16:49:23,112 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 629 places, 658 transitions, 11643 flow [2022-11-21 16:49:23,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-21 16:49:23,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2022-11-21 16:49:23,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 2161 transitions. [2022-11-21 16:49:23,115 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5607161390762844 [2022-11-21 16:49:23,115 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 2161 transitions. [2022-11-21 16:49:23,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 2161 transitions. [2022-11-21 16:49:23,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:49:23,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 2161 transitions. [2022-11-21 16:49:23,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 52.707317073170735) internal successors, (2161), 41 states have internal predecessors, (2161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:23,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 94.0) internal successors, (3948), 42 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:23,119 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 94.0) internal successors, (3948), 42 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:23,119 INFO L175 Difference]: Start difference. First operand has 600 places, 574 transitions, 9102 flow. Second operand 41 states and 2161 transitions. [2022-11-21 16:49:23,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 629 places, 658 transitions, 11643 flow [2022-11-21 16:49:23,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 586 places, 658 transitions, 11124 flow, removed 18 selfloop flow, removed 43 redundant places. [2022-11-21 16:49:23,440 INFO L231 Difference]: Finished difference. Result has 595 places, 607 transitions, 9690 flow [2022-11-21 16:49:23,441 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8619, PETRI_DIFFERENCE_MINUEND_PLACES=546, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=574, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=9690, PETRI_PLACES=595, PETRI_TRANSITIONS=607} [2022-11-21 16:49:23,441 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 507 predicate places. [2022-11-21 16:49:23,441 INFO L495 AbstractCegarLoop]: Abstraction has has 595 places, 607 transitions, 9690 flow [2022-11-21 16:49:23,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:23,441 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:49:23,442 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:49:23,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2022-11-21 16:49:23,442 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:49:23,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:49:23,442 INFO L85 PathProgramCache]: Analyzing trace with hash -2093638478, now seen corresponding path program 95 times [2022-11-21 16:49:23,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:49:23,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561844532] [2022-11-21 16:49:23,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:49:23,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:49:23,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:49:24,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:49:24,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:49:24,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561844532] [2022-11-21 16:49:24,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561844532] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:49:24,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:49:24,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:49:24,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877755105] [2022-11-21 16:49:24,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:49:24,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:49:24,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:49:24,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:49:24,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:49:24,024 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:49:24,024 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 595 places, 607 transitions, 9690 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:24,025 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:49:24,025 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:49:24,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:49:26,202 INFO L130 PetriNetUnfolder]: 406/1333 cut-off events. [2022-11-21 16:49:26,202 INFO L131 PetriNetUnfolder]: For 31788/31788 co-relation queries the response was YES. [2022-11-21 16:49:26,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11324 conditions, 1333 events. 406/1333 cut-off events. For 31788/31788 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 8956 event pairs, 51 based on Foata normal form. 1/1332 useless extension candidates. Maximal degree in co-relation 11116. Up to 927 conditions per place. [2022-11-21 16:49:26,229 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 474 selfloop transitions, 106 changer transitions 20/639 dead transitions. [2022-11-21 16:49:26,229 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 626 places, 639 transitions, 11196 flow [2022-11-21 16:49:26,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-21 16:49:26,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-21 16:49:26,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1946 transitions. [2022-11-21 16:49:26,231 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5595169637722829 [2022-11-21 16:49:26,231 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1946 transitions. [2022-11-21 16:49:26,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1946 transitions. [2022-11-21 16:49:26,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:49:26,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1946 transitions. [2022-11-21 16:49:26,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 52.5945945945946) internal successors, (1946), 37 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:26,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:26,235 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:26,236 INFO L175 Difference]: Start difference. First operand has 595 places, 607 transitions, 9690 flow. Second operand 37 states and 1946 transitions. [2022-11-21 16:49:26,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 626 places, 639 transitions, 11196 flow [2022-11-21 16:49:26,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 596 places, 639 transitions, 10878 flow, removed 86 selfloop flow, removed 30 redundant places. [2022-11-21 16:49:26,624 INFO L231 Difference]: Finished difference. Result has 604 places, 606 transitions, 9596 flow [2022-11-21 16:49:26,625 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=9385, PETRI_DIFFERENCE_MINUEND_PLACES=560, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=607, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=501, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=9596, PETRI_PLACES=604, PETRI_TRANSITIONS=606} [2022-11-21 16:49:26,625 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 516 predicate places. [2022-11-21 16:49:26,625 INFO L495 AbstractCegarLoop]: Abstraction has has 604 places, 606 transitions, 9596 flow [2022-11-21 16:49:26,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:26,626 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:49:26,626 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:49:26,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2022-11-21 16:49:26,627 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:49:26,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:49:26,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1715818286, now seen corresponding path program 96 times [2022-11-21 16:49:26,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:49:26,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731457650] [2022-11-21 16:49:26,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:49:26,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:49:26,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:49:27,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:49:27,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:49:27,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731457650] [2022-11-21 16:49:27,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731457650] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:49:27,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:49:27,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-21 16:49:27,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139928444] [2022-11-21 16:49:27,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:49:27,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-21 16:49:27,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:49:27,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-21 16:49:27,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-21 16:49:27,212 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:49:27,213 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 604 places, 606 transitions, 9596 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:27,213 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:49:27,213 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:49:27,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:49:29,522 INFO L130 PetriNetUnfolder]: 402/1327 cut-off events. [2022-11-21 16:49:29,522 INFO L131 PetriNetUnfolder]: For 29276/29276 co-relation queries the response was YES. [2022-11-21 16:49:29,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11164 conditions, 1327 events. 402/1327 cut-off events. For 29276/29276 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 8926 event pairs, 50 based on Foata normal form. 1/1326 useless extension candidates. Maximal degree in co-relation 10951. Up to 932 conditions per place. [2022-11-21 16:49:29,551 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 478 selfloop transitions, 96 changer transitions 18/631 dead transitions. [2022-11-21 16:49:29,551 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 633 places, 631 transitions, 10990 flow [2022-11-21 16:49:29,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-21 16:49:29,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-21 16:49:29,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1893 transitions. [2022-11-21 16:49:29,554 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5593971631205674 [2022-11-21 16:49:29,554 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1893 transitions. [2022-11-21 16:49:29,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1893 transitions. [2022-11-21 16:49:29,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:49:29,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1893 transitions. [2022-11-21 16:49:29,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 52.583333333333336) internal successors, (1893), 36 states have internal predecessors, (1893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:29,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:29,558 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:29,558 INFO L175 Difference]: Start difference. First operand has 604 places, 606 transitions, 9596 flow. Second operand 36 states and 1893 transitions. [2022-11-21 16:49:29,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 633 places, 631 transitions, 10990 flow [2022-11-21 16:49:29,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 597 places, 631 transitions, 10715 flow, removed 32 selfloop flow, removed 36 redundant places. [2022-11-21 16:49:29,930 INFO L231 Difference]: Finished difference. Result has 605 places, 603 transitions, 9520 flow [2022-11-21 16:49:29,930 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=9337, PETRI_DIFFERENCE_MINUEND_PLACES=562, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=606, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=510, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=9520, PETRI_PLACES=605, PETRI_TRANSITIONS=603} [2022-11-21 16:49:29,931 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 517 predicate places. [2022-11-21 16:49:29,931 INFO L495 AbstractCegarLoop]: Abstraction has has 605 places, 603 transitions, 9520 flow [2022-11-21 16:49:29,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:29,931 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:49:29,932 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:49:29,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2022-11-21 16:49:29,932 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:49:29,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:49:29,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1752975368, now seen corresponding path program 97 times [2022-11-21 16:49:29,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:49:29,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393746987] [2022-11-21 16:49:29,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:49:29,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:49:29,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:49:30,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:49:30,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:49:30,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393746987] [2022-11-21 16:49:30,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393746987] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:49:30,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:49:30,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-21 16:49:30,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144317274] [2022-11-21 16:49:30,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:49:30,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-21 16:49:30,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:49:30,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-21 16:49:30,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-21 16:49:30,519 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:49:30,520 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 605 places, 603 transitions, 9520 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:30,520 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:49:30,520 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:49:30,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:49:32,628 INFO L130 PetriNetUnfolder]: 400/1329 cut-off events. [2022-11-21 16:49:32,628 INFO L131 PetriNetUnfolder]: For 29544/29544 co-relation queries the response was YES. [2022-11-21 16:49:32,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11179 conditions, 1329 events. 400/1329 cut-off events. For 29544/29544 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 8946 event pairs, 40 based on Foata normal form. 1/1328 useless extension candidates. Maximal degree in co-relation 10965. Up to 951 conditions per place. [2022-11-21 16:49:32,652 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 487 selfloop transitions, 89 changer transitions 17/632 dead transitions. [2022-11-21 16:49:32,653 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 636 places, 632 transitions, 11018 flow [2022-11-21 16:49:32,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-21 16:49:32,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-21 16:49:32,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 1991 transitions. [2022-11-21 16:49:32,655 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5573908174692049 [2022-11-21 16:49:32,655 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 1991 transitions. [2022-11-21 16:49:32,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 1991 transitions. [2022-11-21 16:49:32,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:49:32,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 1991 transitions. [2022-11-21 16:49:32,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 52.39473684210526) internal successors, (1991), 38 states have internal predecessors, (1991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:32,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:32,659 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:32,659 INFO L175 Difference]: Start difference. First operand has 605 places, 603 transitions, 9520 flow. Second operand 38 states and 1991 transitions. [2022-11-21 16:49:32,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 636 places, 632 transitions, 11018 flow [2022-11-21 16:49:32,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 601 places, 632 transitions, 10775 flow, removed 25 selfloop flow, removed 35 redundant places. [2022-11-21 16:49:32,969 INFO L231 Difference]: Finished difference. Result has 608 places, 605 transitions, 9575 flow [2022-11-21 16:49:32,970 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=9301, PETRI_DIFFERENCE_MINUEND_PLACES=564, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=603, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=515, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=9575, PETRI_PLACES=608, PETRI_TRANSITIONS=605} [2022-11-21 16:49:32,970 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 520 predicate places. [2022-11-21 16:49:32,970 INFO L495 AbstractCegarLoop]: Abstraction has has 608 places, 605 transitions, 9575 flow [2022-11-21 16:49:32,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:32,970 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:49:32,971 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:49:32,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2022-11-21 16:49:32,971 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:49:32,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:49:32,971 INFO L85 PathProgramCache]: Analyzing trace with hash -481131398, now seen corresponding path program 98 times [2022-11-21 16:49:32,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:49:32,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017142198] [2022-11-21 16:49:32,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:49:32,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:49:32,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:49:33,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:49:33,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:49:33,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017142198] [2022-11-21 16:49:33,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017142198] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:49:33,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:49:33,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-21 16:49:33,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092104885] [2022-11-21 16:49:33,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:49:33,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-21 16:49:33,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:49:33,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-21 16:49:33,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-21 16:49:33,702 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:49:33,702 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 608 places, 605 transitions, 9575 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:33,702 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:49:33,703 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:49:33,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:49:36,482 INFO L130 PetriNetUnfolder]: 400/1336 cut-off events. [2022-11-21 16:49:36,482 INFO L131 PetriNetUnfolder]: For 31105/31105 co-relation queries the response was YES. [2022-11-21 16:49:36,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11298 conditions, 1336 events. 400/1336 cut-off events. For 31105/31105 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 9058 event pairs, 38 based on Foata normal form. 1/1335 useless extension candidates. Maximal degree in co-relation 11084. Up to 777 conditions per place. [2022-11-21 16:49:36,509 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 364 selfloop transitions, 225 changer transitions 20/648 dead transitions. [2022-11-21 16:49:36,509 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 648 places, 648 transitions, 11594 flow [2022-11-21 16:49:36,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-21 16:49:36,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2022-11-21 16:49:36,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 2515 transitions. [2022-11-21 16:49:36,512 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5574024822695035 [2022-11-21 16:49:36,512 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 2515 transitions. [2022-11-21 16:49:36,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 2515 transitions. [2022-11-21 16:49:36,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:49:36,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 2515 transitions. [2022-11-21 16:49:36,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 52.395833333333336) internal successors, (2515), 48 states have internal predecessors, (2515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:36,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 94.0) internal successors, (4606), 49 states have internal predecessors, (4606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:36,517 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 94.0) internal successors, (4606), 49 states have internal predecessors, (4606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:36,517 INFO L175 Difference]: Start difference. First operand has 608 places, 605 transitions, 9575 flow. Second operand 48 states and 2515 transitions. [2022-11-21 16:49:36,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 648 places, 648 transitions, 11594 flow [2022-11-21 16:49:36,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 615 places, 648 transitions, 11289 flow, removed 65 selfloop flow, removed 33 redundant places. [2022-11-21 16:49:36,910 INFO L231 Difference]: Finished difference. Result has 622 places, 611 transitions, 10034 flow [2022-11-21 16:49:36,911 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=9280, PETRI_DIFFERENCE_MINUEND_PLACES=568, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=605, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=219, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=10034, PETRI_PLACES=622, PETRI_TRANSITIONS=611} [2022-11-21 16:49:36,911 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 534 predicate places. [2022-11-21 16:49:36,912 INFO L495 AbstractCegarLoop]: Abstraction has has 622 places, 611 transitions, 10034 flow [2022-11-21 16:49:36,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:36,912 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:49:36,913 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:49:36,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2022-11-21 16:49:36,913 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:49:36,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:49:36,914 INFO L85 PathProgramCache]: Analyzing trace with hash 521647042, now seen corresponding path program 99 times [2022-11-21 16:49:36,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:49:36,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131008120] [2022-11-21 16:49:36,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:49:36,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:49:36,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:49:37,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:49:37,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:49:37,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131008120] [2022-11-21 16:49:37,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131008120] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:49:37,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:49:37,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-21 16:49:37,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894772173] [2022-11-21 16:49:37,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:49:37,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-21 16:49:37,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:49:37,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-21 16:49:37,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-21 16:49:37,500 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:49:37,501 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 622 places, 611 transitions, 10034 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:37,501 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:49:37,501 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:49:37,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:49:39,493 INFO L130 PetriNetUnfolder]: 395/1308 cut-off events. [2022-11-21 16:49:39,493 INFO L131 PetriNetUnfolder]: For 30493/30493 co-relation queries the response was YES. [2022-11-21 16:49:39,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11268 conditions, 1308 events. 395/1308 cut-off events. For 30493/30493 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 8746 event pairs, 38 based on Foata normal form. 1/1307 useless extension candidates. Maximal degree in co-relation 11052. Up to 926 conditions per place. [2022-11-21 16:49:39,518 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 485 selfloop transitions, 75 changer transitions 31/630 dead transitions. [2022-11-21 16:49:39,518 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 650 places, 630 transitions, 11302 flow [2022-11-21 16:49:39,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-21 16:49:39,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-21 16:49:39,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1788 transitions. [2022-11-21 16:49:39,520 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5594493116395495 [2022-11-21 16:49:39,521 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1788 transitions. [2022-11-21 16:49:39,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1788 transitions. [2022-11-21 16:49:39,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:49:39,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1788 transitions. [2022-11-21 16:49:39,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 52.588235294117645) internal successors, (1788), 34 states have internal predecessors, (1788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:39,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:39,524 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:39,524 INFO L175 Difference]: Start difference. First operand has 622 places, 611 transitions, 10034 flow. Second operand 34 states and 1788 transitions. [2022-11-21 16:49:39,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 650 places, 630 transitions, 11302 flow [2022-11-21 16:49:39,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 609 places, 630 transitions, 10921 flow, removed 75 selfloop flow, removed 41 redundant places. [2022-11-21 16:49:39,874 INFO L231 Difference]: Finished difference. Result has 613 places, 590 transitions, 9541 flow [2022-11-21 16:49:39,875 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=9659, PETRI_DIFFERENCE_MINUEND_PLACES=576, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=611, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=536, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=9541, PETRI_PLACES=613, PETRI_TRANSITIONS=590} [2022-11-21 16:49:39,875 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 525 predicate places. [2022-11-21 16:49:39,875 INFO L495 AbstractCegarLoop]: Abstraction has has 613 places, 590 transitions, 9541 flow [2022-11-21 16:49:39,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:39,875 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:49:39,876 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:49:39,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2022-11-21 16:49:39,876 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:49:39,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:49:39,876 INFO L85 PathProgramCache]: Analyzing trace with hash -773918718, now seen corresponding path program 100 times [2022-11-21 16:49:39,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:49:39,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104245417] [2022-11-21 16:49:39,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:49:39,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:49:39,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:49:40,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:49:40,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:49:40,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104245417] [2022-11-21 16:49:40,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104245417] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:49:40,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:49:40,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:49:40,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591006491] [2022-11-21 16:49:40,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:49:40,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:49:40,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:49:40,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:49:40,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:49:40,382 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:49:40,383 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 613 places, 590 transitions, 9541 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:40,383 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:49:40,383 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:49:40,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:49:42,379 INFO L130 PetriNetUnfolder]: 394/1295 cut-off events. [2022-11-21 16:49:42,379 INFO L131 PetriNetUnfolder]: For 28442/28442 co-relation queries the response was YES. [2022-11-21 16:49:42,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11071 conditions, 1295 events. 394/1295 cut-off events. For 28442/28442 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 8579 event pairs, 52 based on Foata normal form. 1/1294 useless extension candidates. Maximal degree in co-relation 10854. Up to 901 conditions per place. [2022-11-21 16:49:42,405 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 466 selfloop transitions, 93 changer transitions 23/621 dead transitions. [2022-11-21 16:49:42,405 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 627 places, 621 transitions, 11038 flow [2022-11-21 16:49:42,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-21 16:49:42,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-21 16:49:42,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2002 transitions. [2022-11-21 16:49:42,408 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5604703247480403 [2022-11-21 16:49:42,408 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2002 transitions. [2022-11-21 16:49:42,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2002 transitions. [2022-11-21 16:49:42,409 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:49:42,409 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2002 transitions. [2022-11-21 16:49:42,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 52.68421052631579) internal successors, (2002), 38 states have internal predecessors, (2002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:42,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:42,412 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:42,412 INFO L175 Difference]: Start difference. First operand has 613 places, 590 transitions, 9541 flow. Second operand 38 states and 2002 transitions. [2022-11-21 16:49:42,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 627 places, 621 transitions, 11038 flow [2022-11-21 16:49:42,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 584 places, 621 transitions, 10617 flow, removed 54 selfloop flow, removed 43 redundant places. [2022-11-21 16:49:42,760 INFO L231 Difference]: Finished difference. Result has 591 places, 587 transitions, 9385 flow [2022-11-21 16:49:42,761 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=9146, PETRI_DIFFERENCE_MINUEND_PLACES=547, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=590, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=498, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=9385, PETRI_PLACES=591, PETRI_TRANSITIONS=587} [2022-11-21 16:49:42,761 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 503 predicate places. [2022-11-21 16:49:42,761 INFO L495 AbstractCegarLoop]: Abstraction has has 591 places, 587 transitions, 9385 flow [2022-11-21 16:49:42,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:42,761 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:49:42,762 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:49:42,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2022-11-21 16:49:42,762 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:49:42,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:49:42,762 INFO L85 PathProgramCache]: Analyzing trace with hash 948382796, now seen corresponding path program 101 times [2022-11-21 16:49:42,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:49:42,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773970551] [2022-11-21 16:49:42,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:49:42,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:49:42,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:49:43,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:49:43,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:49:43,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773970551] [2022-11-21 16:49:43,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773970551] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:49:43,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:49:43,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:49:43,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086830113] [2022-11-21 16:49:43,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:49:43,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:49:43,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:49:43,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:49:43,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:49:43,261 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:49:43,262 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 591 places, 587 transitions, 9385 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:43,262 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:49:43,262 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:49:43,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:49:45,452 INFO L130 PetriNetUnfolder]: 392/1290 cut-off events. [2022-11-21 16:49:45,453 INFO L131 PetriNetUnfolder]: For 26969/26969 co-relation queries the response was YES. [2022-11-21 16:49:45,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10978 conditions, 1290 events. 392/1290 cut-off events. For 26969/26969 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 8544 event pairs, 51 based on Foata normal form. 1/1289 useless extension candidates. Maximal degree in co-relation 10767. Up to 769 conditions per place. [2022-11-21 16:49:45,478 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 358 selfloop transitions, 216 changer transitions 23/636 dead transitions. [2022-11-21 16:49:45,478 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 622 places, 636 transitions, 11428 flow [2022-11-21 16:49:45,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-21 16:49:45,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2022-11-21 16:49:45,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 2159 transitions. [2022-11-21 16:49:45,481 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.560197197716658 [2022-11-21 16:49:45,481 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 2159 transitions. [2022-11-21 16:49:45,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 2159 transitions. [2022-11-21 16:49:45,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:49:45,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 2159 transitions. [2022-11-21 16:49:45,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 52.65853658536585) internal successors, (2159), 41 states have internal predecessors, (2159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:45,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 94.0) internal successors, (3948), 42 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:45,485 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 94.0) internal successors, (3948), 42 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:45,485 INFO L175 Difference]: Start difference. First operand has 591 places, 587 transitions, 9385 flow. Second operand 41 states and 2159 transitions. [2022-11-21 16:49:45,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 622 places, 636 transitions, 11428 flow [2022-11-21 16:49:45,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 587 places, 636 transitions, 11109 flow, removed 53 selfloop flow, removed 35 redundant places. [2022-11-21 16:49:45,860 INFO L231 Difference]: Finished difference. Result has 594 places, 596 transitions, 9858 flow [2022-11-21 16:49:45,860 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=9072, PETRI_DIFFERENCE_MINUEND_PLACES=547, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=587, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=207, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=9858, PETRI_PLACES=594, PETRI_TRANSITIONS=596} [2022-11-21 16:49:45,861 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 506 predicate places. [2022-11-21 16:49:45,861 INFO L495 AbstractCegarLoop]: Abstraction has has 594 places, 596 transitions, 9858 flow [2022-11-21 16:49:45,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:45,862 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:49:45,862 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:49:45,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2022-11-21 16:49:45,862 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:49:45,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:49:45,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1741176090, now seen corresponding path program 102 times [2022-11-21 16:49:45,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:49:45,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232613704] [2022-11-21 16:49:45,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:49:45,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:49:45,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:49:46,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:49:46,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:49:46,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232613704] [2022-11-21 16:49:46,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232613704] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:49:46,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:49:46,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:49:46,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097732585] [2022-11-21 16:49:46,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:49:46,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:49:46,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:49:46,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:49:46,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:49:46,416 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:49:46,416 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 594 places, 596 transitions, 9858 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:46,416 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:49:46,417 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:49:46,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:49:48,444 INFO L130 PetriNetUnfolder]: 391/1259 cut-off events. [2022-11-21 16:49:48,444 INFO L131 PetriNetUnfolder]: For 27760/27760 co-relation queries the response was YES. [2022-11-21 16:49:48,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11014 conditions, 1259 events. 391/1259 cut-off events. For 27760/27760 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 8193 event pairs, 52 based on Foata normal form. 1/1258 useless extension candidates. Maximal degree in co-relation 10800. Up to 895 conditions per place. [2022-11-21 16:49:48,468 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 474 selfloop transitions, 92 changer transitions 18/623 dead transitions. [2022-11-21 16:49:48,468 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 624 places, 623 transitions, 11353 flow [2022-11-21 16:49:48,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-21 16:49:48,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-21 16:49:48,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1899 transitions. [2022-11-21 16:49:48,470 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5611702127659575 [2022-11-21 16:49:48,471 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1899 transitions. [2022-11-21 16:49:48,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1899 transitions. [2022-11-21 16:49:48,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:49:48,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1899 transitions. [2022-11-21 16:49:48,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 52.75) internal successors, (1899), 36 states have internal predecessors, (1899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:48,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:48,474 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:48,474 INFO L175 Difference]: Start difference. First operand has 594 places, 596 transitions, 9858 flow. Second operand 36 states and 1899 transitions. [2022-11-21 16:49:48,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 624 places, 623 transitions, 11353 flow [2022-11-21 16:49:48,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 586 places, 623 transitions, 10853 flow, removed 71 selfloop flow, removed 38 redundant places. [2022-11-21 16:49:48,865 INFO L231 Difference]: Finished difference. Result has 591 places, 595 transitions, 9640 flow [2022-11-21 16:49:48,866 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=9376, PETRI_DIFFERENCE_MINUEND_PLACES=551, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=596, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=505, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=9640, PETRI_PLACES=591, PETRI_TRANSITIONS=595} [2022-11-21 16:49:48,866 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 503 predicate places. [2022-11-21 16:49:48,866 INFO L495 AbstractCegarLoop]: Abstraction has has 591 places, 595 transitions, 9640 flow [2022-11-21 16:49:48,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:48,866 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:49:48,866 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:49:48,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2022-11-21 16:49:48,867 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:49:48,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:49:48,867 INFO L85 PathProgramCache]: Analyzing trace with hash -470436548, now seen corresponding path program 103 times [2022-11-21 16:49:48,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:49:48,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905355685] [2022-11-21 16:49:48,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:49:48,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:49:48,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:49:49,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:49:49,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:49:49,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905355685] [2022-11-21 16:49:49,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905355685] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:49:49,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:49:49,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-21 16:49:49,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316995776] [2022-11-21 16:49:49,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:49:49,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-21 16:49:49,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:49:49,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-21 16:49:49,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-21 16:49:49,451 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:49:49,452 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 591 places, 595 transitions, 9640 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:49,452 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:49:49,453 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:49:49,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:49:51,941 INFO L130 PetriNetUnfolder]: 397/1292 cut-off events. [2022-11-21 16:49:51,941 INFO L131 PetriNetUnfolder]: For 26010/26010 co-relation queries the response was YES. [2022-11-21 16:49:51,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11068 conditions, 1292 events. 397/1292 cut-off events. For 26010/26010 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 8505 event pairs, 49 based on Foata normal form. 1/1292 useless extension candidates. Maximal degree in co-relation 10857. Up to 799 conditions per place. [2022-11-21 16:49:51,964 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 409 selfloop transitions, 188 changer transitions 17/653 dead transitions. [2022-11-21 16:49:51,964 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 631 places, 653 transitions, 11916 flow [2022-11-21 16:49:51,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-21 16:49:51,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2022-11-21 16:49:51,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 2512 transitions. [2022-11-21 16:49:51,967 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5567375886524822 [2022-11-21 16:49:51,967 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 2512 transitions. [2022-11-21 16:49:51,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 2512 transitions. [2022-11-21 16:49:51,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:49:51,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 2512 transitions. [2022-11-21 16:49:51,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 52.333333333333336) internal successors, (2512), 48 states have internal predecessors, (2512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:51,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 94.0) internal successors, (4606), 49 states have internal predecessors, (4606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:51,971 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 94.0) internal successors, (4606), 49 states have internal predecessors, (4606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:51,971 INFO L175 Difference]: Start difference. First operand has 591 places, 595 transitions, 9640 flow. Second operand 48 states and 2512 transitions. [2022-11-21 16:49:51,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 631 places, 653 transitions, 11916 flow [2022-11-21 16:49:52,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 596 places, 653 transitions, 11589 flow, removed 70 selfloop flow, removed 35 redundant places. [2022-11-21 16:49:52,278 INFO L231 Difference]: Finished difference. Result has 603 places, 613 transitions, 10139 flow [2022-11-21 16:49:52,279 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=9323, PETRI_DIFFERENCE_MINUEND_PLACES=549, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=595, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=10139, PETRI_PLACES=603, PETRI_TRANSITIONS=613} [2022-11-21 16:49:52,279 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 515 predicate places. [2022-11-21 16:49:52,279 INFO L495 AbstractCegarLoop]: Abstraction has has 603 places, 613 transitions, 10139 flow [2022-11-21 16:49:52,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:52,279 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:49:52,281 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:49:52,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2022-11-21 16:49:52,282 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:49:52,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:49:52,282 INFO L85 PathProgramCache]: Analyzing trace with hash 123234612, now seen corresponding path program 104 times [2022-11-21 16:49:52,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:49:52,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050046435] [2022-11-21 16:49:52,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:49:52,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:49:52,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:49:52,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:49:52,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:49:52,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050046435] [2022-11-21 16:49:52,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050046435] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:49:52,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:49:52,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-21 16:49:52,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396556615] [2022-11-21 16:49:52,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:49:52,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-21 16:49:52,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:49:52,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-21 16:49:52,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-21 16:49:52,829 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:49:52,830 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 603 places, 613 transitions, 10139 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:52,830 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:49:52,830 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:49:52,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:49:54,733 INFO L130 PetriNetUnfolder]: 392/1274 cut-off events. [2022-11-21 16:49:54,733 INFO L131 PetriNetUnfolder]: For 25310/25310 co-relation queries the response was YES. [2022-11-21 16:49:54,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10983 conditions, 1274 events. 392/1274 cut-off events. For 25310/25310 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 8361 event pairs, 48 based on Foata normal form. 1/1274 useless extension candidates. Maximal degree in co-relation 10771. Up to 924 conditions per place. [2022-11-21 16:49:54,756 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 493 selfloop transitions, 74 changer transitions 25/631 dead transitions. [2022-11-21 16:49:54,756 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 632 places, 631 transitions, 11422 flow [2022-11-21 16:49:54,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-21 16:49:54,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-21 16:49:54,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1835 transitions. [2022-11-21 16:49:54,759 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5577507598784195 [2022-11-21 16:49:54,759 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1835 transitions. [2022-11-21 16:49:54,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1835 transitions. [2022-11-21 16:49:54,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:49:54,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1835 transitions. [2022-11-21 16:49:54,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 52.42857142857143) internal successors, (1835), 35 states have internal predecessors, (1835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:54,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:54,764 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:54,765 INFO L175 Difference]: Start difference. First operand has 603 places, 613 transitions, 10139 flow. Second operand 35 states and 1835 transitions. [2022-11-21 16:49:54,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 632 places, 631 transitions, 11422 flow [2022-11-21 16:49:55,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 591 places, 631 transitions, 11076 flow, removed 52 selfloop flow, removed 41 redundant places. [2022-11-21 16:49:55,121 INFO L231 Difference]: Finished difference. Result has 596 places, 597 transitions, 9708 flow [2022-11-21 16:49:55,121 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=9799, PETRI_DIFFERENCE_MINUEND_PLACES=557, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=613, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=539, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=9708, PETRI_PLACES=596, PETRI_TRANSITIONS=597} [2022-11-21 16:49:55,122 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 508 predicate places. [2022-11-21 16:49:55,122 INFO L495 AbstractCegarLoop]: Abstraction has has 596 places, 597 transitions, 9708 flow [2022-11-21 16:49:55,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:55,122 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:49:55,123 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:49:55,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2022-11-21 16:49:55,123 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:49:55,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:49:55,123 INFO L85 PathProgramCache]: Analyzing trace with hash 839897168, now seen corresponding path program 105 times [2022-11-21 16:49:55,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:49:55,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570435823] [2022-11-21 16:49:55,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:49:55,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:49:55,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:49:55,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:49:55,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:49:55,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570435823] [2022-11-21 16:49:55,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570435823] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:49:55,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:49:55,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:49:55,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469102213] [2022-11-21 16:49:55,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:49:55,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:49:55,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:49:55,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:49:55,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:49:55,630 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:49:55,631 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 596 places, 597 transitions, 9708 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:55,631 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:49:55,631 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:49:55,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:49:57,445 INFO L130 PetriNetUnfolder]: 387/1250 cut-off events. [2022-11-21 16:49:57,445 INFO L131 PetriNetUnfolder]: For 24157/24157 co-relation queries the response was YES. [2022-11-21 16:49:57,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10716 conditions, 1250 events. 387/1250 cut-off events. For 24157/24157 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 8119 event pairs, 48 based on Foata normal form. 1/1250 useless extension candidates. Maximal degree in co-relation 10503. Up to 894 conditions per place. [2022-11-21 16:49:57,468 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 479 selfloop transitions, 78 changer transitions 19/615 dead transitions. [2022-11-21 16:49:57,468 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 605 places, 615 transitions, 10954 flow [2022-11-21 16:49:57,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-21 16:49:57,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-21 16:49:57,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1790 transitions. [2022-11-21 16:49:57,470 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5600750938673341 [2022-11-21 16:49:57,470 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1790 transitions. [2022-11-21 16:49:57,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1790 transitions. [2022-11-21 16:49:57,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:49:57,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1790 transitions. [2022-11-21 16:49:57,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 52.64705882352941) internal successors, (1790), 34 states have internal predecessors, (1790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:57,473 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:57,474 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:57,474 INFO L175 Difference]: Start difference. First operand has 596 places, 597 transitions, 9708 flow. Second operand 34 states and 1790 transitions. [2022-11-21 16:49:57,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 605 places, 615 transitions, 10954 flow [2022-11-21 16:49:57,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 564 places, 615 transitions, 10626 flow, removed 23 selfloop flow, removed 41 redundant places. [2022-11-21 16:49:57,787 INFO L231 Difference]: Finished difference. Result has 569 places, 587 transitions, 9493 flow [2022-11-21 16:49:57,787 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=9388, PETRI_DIFFERENCE_MINUEND_PLACES=531, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=597, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=519, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=9493, PETRI_PLACES=569, PETRI_TRANSITIONS=587} [2022-11-21 16:49:57,788 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 481 predicate places. [2022-11-21 16:49:57,788 INFO L495 AbstractCegarLoop]: Abstraction has has 569 places, 587 transitions, 9493 flow [2022-11-21 16:49:57,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:57,788 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:49:57,788 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:49:57,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2022-11-21 16:49:57,788 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:49:57,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:49:57,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1224198230, now seen corresponding path program 106 times [2022-11-21 16:49:57,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:49:57,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656191848] [2022-11-21 16:49:57,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:49:57,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:49:57,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:49:58,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:49:58,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:49:58,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656191848] [2022-11-21 16:49:58,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656191848] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:49:58,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:49:58,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:49:58,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156405050] [2022-11-21 16:49:58,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:49:58,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:49:58,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:49:58,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:49:58,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:49:58,295 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:49:58,296 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 569 places, 587 transitions, 9493 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:58,296 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:49:58,296 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:49:58,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:49:59,951 INFO L130 PetriNetUnfolder]: 383/1236 cut-off events. [2022-11-21 16:49:59,952 INFO L131 PetriNetUnfolder]: For 23826/23826 co-relation queries the response was YES. [2022-11-21 16:49:59,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10505 conditions, 1236 events. 383/1236 cut-off events. For 23826/23826 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 7989 event pairs, 51 based on Foata normal form. 1/1235 useless extension candidates. Maximal degree in co-relation 10304. Up to 885 conditions per place. [2022-11-21 16:49:59,971 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 463 selfloop transitions, 56 changer transitions 46/604 dead transitions. [2022-11-21 16:49:59,971 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 585 places, 604 transitions, 10711 flow [2022-11-21 16:49:59,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-21 16:49:59,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-21 16:49:59,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1688 transitions. [2022-11-21 16:49:59,974 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5611702127659575 [2022-11-21 16:49:59,974 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1688 transitions. [2022-11-21 16:49:59,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1688 transitions. [2022-11-21 16:49:59,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:49:59,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1688 transitions. [2022-11-21 16:49:59,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 52.75) internal successors, (1688), 32 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:59,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:59,977 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:49:59,977 INFO L175 Difference]: Start difference. First operand has 569 places, 587 transitions, 9493 flow. Second operand 32 states and 1688 transitions. [2022-11-21 16:49:59,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 585 places, 604 transitions, 10711 flow [2022-11-21 16:50:00,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 551 places, 604 transitions, 10484 flow, removed 12 selfloop flow, removed 34 redundant places. [2022-11-21 16:50:00,253 INFO L231 Difference]: Finished difference. Result has 555 places, 549 transitions, 8980 flow [2022-11-21 16:50:00,254 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=9274, PETRI_DIFFERENCE_MINUEND_PLACES=520, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=587, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=531, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=8980, PETRI_PLACES=555, PETRI_TRANSITIONS=549} [2022-11-21 16:50:00,254 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 467 predicate places. [2022-11-21 16:50:00,254 INFO L495 AbstractCegarLoop]: Abstraction has has 555 places, 549 transitions, 8980 flow [2022-11-21 16:50:00,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:00,254 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:50:00,255 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:50:00,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2022-11-21 16:50:00,255 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:50:00,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:50:00,255 INFO L85 PathProgramCache]: Analyzing trace with hash -922201066, now seen corresponding path program 107 times [2022-11-21 16:50:00,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:50:00,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491350164] [2022-11-21 16:50:00,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:50:00,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:50:00,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:50:00,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:50:00,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:50:00,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491350164] [2022-11-21 16:50:00,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491350164] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:50:00,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:50:00,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:50:00,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727909528] [2022-11-21 16:50:00,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:50:00,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:50:00,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:50:00,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:50:00,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:50:00,736 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:50:00,737 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 555 places, 549 transitions, 8980 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:00,737 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:50:00,737 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:50:00,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:50:02,496 INFO L130 PetriNetUnfolder]: 374/1205 cut-off events. [2022-11-21 16:50:02,496 INFO L131 PetriNetUnfolder]: For 23855/23855 co-relation queries the response was YES. [2022-11-21 16:50:02,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10212 conditions, 1205 events. 374/1205 cut-off events. For 23855/23855 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 7741 event pairs, 51 based on Foata normal form. 1/1204 useless extension candidates. Maximal degree in co-relation 10015. Up to 795 conditions per place. [2022-11-21 16:50:02,518 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 394 selfloop transitions, 126 changer transitions 26/585 dead transitions. [2022-11-21 16:50:02,518 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 551 places, 585 transitions, 10515 flow [2022-11-21 16:50:02,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-21 16:50:02,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-21 16:50:02,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1801 transitions. [2022-11-21 16:50:02,521 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5635168961201502 [2022-11-21 16:50:02,521 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1801 transitions. [2022-11-21 16:50:02,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1801 transitions. [2022-11-21 16:50:02,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:50:02,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1801 transitions. [2022-11-21 16:50:02,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 52.970588235294116) internal successors, (1801), 34 states have internal predecessors, (1801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:02,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:02,524 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:02,524 INFO L175 Difference]: Start difference. First operand has 555 places, 549 transitions, 8980 flow. Second operand 34 states and 1801 transitions. [2022-11-21 16:50:02,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 551 places, 585 transitions, 10515 flow [2022-11-21 16:50:02,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 506 places, 585 transitions, 9960 flow, removed 70 selfloop flow, removed 45 redundant places. [2022-11-21 16:50:02,798 INFO L231 Difference]: Finished difference. Result has 512 places, 543 transitions, 8651 flow [2022-11-21 16:50:02,799 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8473, PETRI_DIFFERENCE_MINUEND_PLACES=473, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=549, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=8651, PETRI_PLACES=512, PETRI_TRANSITIONS=543} [2022-11-21 16:50:02,799 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 424 predicate places. [2022-11-21 16:50:02,799 INFO L495 AbstractCegarLoop]: Abstraction has has 512 places, 543 transitions, 8651 flow [2022-11-21 16:50:02,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:02,799 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:50:02,799 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:50:02,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2022-11-21 16:50:02,800 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:50:02,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:50:02,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1691880736, now seen corresponding path program 108 times [2022-11-21 16:50:02,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:50:02,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939371920] WARNING: YOUR LOGFILE WAS TOO LONG, SOME LINES IN THE MIDDLE WERE REMOVED. [2022-11-21 16:50:32,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-21 16:50:32,322 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:50:32,323 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 444 transitions, 6142 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:32,323 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:50:32,323 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:50:32,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:50:34,173 INFO L130 PetriNetUnfolder]: 323/1013 cut-off events. [2022-11-21 16:50:34,173 INFO L131 PetriNetUnfolder]: For 12220/12220 co-relation queries the response was YES. [2022-11-21 16:50:34,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7446 conditions, 1013 events. 323/1013 cut-off events. For 12220/12220 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 5929 event pairs, 57 based on Foata normal form. 1/1011 useless extension candidates. Maximal degree in co-relation 7292. Up to 632 conditions per place. [2022-11-21 16:50:34,188 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 275 selfloop transitions, 97 changer transitions 57/468 dead transitions. [2022-11-21 16:50:34,188 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 468 transitions, 7150 flow [2022-11-21 16:50:34,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-21 16:50:34,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-21 16:50:34,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1942 transitions. [2022-11-21 16:50:34,190 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5583668775158137 [2022-11-21 16:50:34,190 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1942 transitions. [2022-11-21 16:50:34,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1942 transitions. [2022-11-21 16:50:34,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:50:34,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1942 transitions. [2022-11-21 16:50:34,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 52.486486486486484) internal successors, (1942), 37 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:34,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:34,194 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:34,194 INFO L175 Difference]: Start difference. First operand has 454 places, 444 transitions, 6142 flow. Second operand 37 states and 1942 transitions. [2022-11-21 16:50:34,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 468 transitions, 7150 flow [2022-11-21 16:50:34,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 468 transitions, 6736 flow, removed 47 selfloop flow, removed 38 redundant places. [2022-11-21 16:50:34,331 INFO L231 Difference]: Finished difference. Result has 451 places, 396 transitions, 5108 flow [2022-11-21 16:50:34,332 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=5737, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=5108, PETRI_PLACES=451, PETRI_TRANSITIONS=396} [2022-11-21 16:50:34,332 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 363 predicate places. [2022-11-21 16:50:34,332 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 396 transitions, 5108 flow [2022-11-21 16:50:34,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:34,333 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:50:34,333 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:50:34,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2022-11-21 16:50:34,333 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:50:34,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:50:34,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1942169300, now seen corresponding path program 120 times [2022-11-21 16:50:34,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:50:34,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146986922] [2022-11-21 16:50:34,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:50:34,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:50:34,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:50:34,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:50:34,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:50:34,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146986922] [2022-11-21 16:50:34,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146986922] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:50:34,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:50:34,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:50:34,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194517268] [2022-11-21 16:50:34,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:50:34,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:50:34,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:50:34,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:50:34,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:50:34,878 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:50:34,879 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 396 transitions, 5108 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:34,879 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:50:34,879 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:50:34,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:50:36,514 INFO L130 PetriNetUnfolder]: 310/964 cut-off events. [2022-11-21 16:50:36,514 INFO L131 PetriNetUnfolder]: For 11933/11933 co-relation queries the response was YES. [2022-11-21 16:50:36,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6956 conditions, 964 events. 310/964 cut-off events. For 11933/11933 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 5493 event pairs, 57 based on Foata normal form. 1/963 useless extension candidates. Maximal degree in co-relation 6803. Up to 645 conditions per place. [2022-11-21 16:50:36,527 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 280 selfloop transitions, 87 changer transitions 22/428 dead transitions. [2022-11-21 16:50:36,527 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 428 transitions, 6240 flow [2022-11-21 16:50:36,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-21 16:50:36,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-21 16:50:36,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1746 transitions. [2022-11-21 16:50:36,529 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.562862669245648 [2022-11-21 16:50:36,529 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1746 transitions. [2022-11-21 16:50:36,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1746 transitions. [2022-11-21 16:50:36,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:50:36,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1746 transitions. [2022-11-21 16:50:36,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 52.90909090909091) internal successors, (1746), 33 states have internal predecessors, (1746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:36,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:36,533 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:36,533 INFO L175 Difference]: Start difference. First operand has 451 places, 396 transitions, 5108 flow. Second operand 33 states and 1746 transitions. [2022-11-21 16:50:36,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 428 transitions, 6240 flow [2022-11-21 16:50:36,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 428 transitions, 5724 flow, removed 103 selfloop flow, removed 46 redundant places. [2022-11-21 16:50:36,651 INFO L231 Difference]: Finished difference. Result has 423 places, 394 transitions, 4837 flow [2022-11-21 16:50:36,651 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=4622, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=4837, PETRI_PLACES=423, PETRI_TRANSITIONS=394} [2022-11-21 16:50:36,651 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 335 predicate places. [2022-11-21 16:50:36,651 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 394 transitions, 4837 flow [2022-11-21 16:50:36,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:36,652 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:50:36,652 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:50:36,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2022-11-21 16:50:36,652 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:50:36,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:50:36,652 INFO L85 PathProgramCache]: Analyzing trace with hash -487756908, now seen corresponding path program 121 times [2022-11-21 16:50:36,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:50:36,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440633570] [2022-11-21 16:50:36,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:50:36,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:50:36,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:50:37,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:50:37,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:50:37,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440633570] [2022-11-21 16:50:37,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440633570] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:50:37,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:50:37,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:50:37,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448479537] [2022-11-21 16:50:37,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:50:37,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:50:37,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:50:37,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:50:37,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:50:37,138 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:50:37,139 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 394 transitions, 4837 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:37,139 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:50:37,139 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:50:37,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:50:38,706 INFO L130 PetriNetUnfolder]: 301/935 cut-off events. [2022-11-21 16:50:38,706 INFO L131 PetriNetUnfolder]: For 11658/11658 co-relation queries the response was YES. [2022-11-21 16:50:38,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6605 conditions, 935 events. 301/935 cut-off events. For 11658/11658 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 5223 event pairs, 41 based on Foata normal form. 1/935 useless extension candidates. Maximal degree in co-relation 6460. Up to 617 conditions per place. [2022-11-21 16:50:38,718 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 257 selfloop transitions, 71 changer transitions 51/418 dead transitions. [2022-11-21 16:50:38,718 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 418 transitions, 5744 flow [2022-11-21 16:50:38,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-21 16:50:38,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-21 16:50:38,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1839 transitions. [2022-11-21 16:50:38,720 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.558966565349544 [2022-11-21 16:50:38,720 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1839 transitions. [2022-11-21 16:50:38,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1839 transitions. [2022-11-21 16:50:38,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:50:38,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1839 transitions. [2022-11-21 16:50:38,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 52.542857142857144) internal successors, (1839), 35 states have internal predecessors, (1839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:38,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:38,724 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:38,724 INFO L175 Difference]: Start difference. First operand has 423 places, 394 transitions, 4837 flow. Second operand 35 states and 1839 transitions. [2022-11-21 16:50:38,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 418 transitions, 5744 flow [2022-11-21 16:50:38,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 418 transitions, 5457 flow, removed 36 selfloop flow, removed 33 redundant places. [2022-11-21 16:50:38,827 INFO L231 Difference]: Finished difference. Result has 420 places, 358 transitions, 4222 flow [2022-11-21 16:50:38,828 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=4560, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=4222, PETRI_PLACES=420, PETRI_TRANSITIONS=358} [2022-11-21 16:50:38,828 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 332 predicate places. [2022-11-21 16:50:38,828 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 358 transitions, 4222 flow [2022-11-21 16:50:38,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:38,828 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:50:38,828 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:50:38,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2022-11-21 16:50:38,828 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:50:38,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:50:38,829 INFO L85 PathProgramCache]: Analyzing trace with hash -794517584, now seen corresponding path program 122 times [2022-11-21 16:50:38,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:50:38,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673798088] [2022-11-21 16:50:38,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:50:38,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:50:38,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:50:39,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:50:39,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:50:39,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673798088] [2022-11-21 16:50:39,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673798088] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:50:39,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:50:39,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-21 16:50:39,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158546250] [2022-11-21 16:50:39,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:50:39,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-21 16:50:39,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:50:39,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-21 16:50:39,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-11-21 16:50:39,403 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:50:39,404 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 358 transitions, 4222 flow. Second operand has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:39,404 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:50:39,404 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:50:39,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:50:41,107 INFO L130 PetriNetUnfolder]: 286/869 cut-off events. [2022-11-21 16:50:41,107 INFO L131 PetriNetUnfolder]: For 9992/9992 co-relation queries the response was YES. [2022-11-21 16:50:41,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6023 conditions, 869 events. 286/869 cut-off events. For 9992/9992 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 4625 event pairs, 49 based on Foata normal form. 1/868 useless extension candidates. Maximal degree in co-relation 5882. Up to 609 conditions per place. [2022-11-21 16:50:41,117 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 251 selfloop transitions, 61 changer transitions 24/375 dead transitions. [2022-11-21 16:50:41,117 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 375 transitions, 4972 flow [2022-11-21 16:50:41,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-21 16:50:41,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-21 16:50:41,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1875 transitions. [2022-11-21 16:50:41,120 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5540780141843972 [2022-11-21 16:50:41,120 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1875 transitions. [2022-11-21 16:50:41,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1875 transitions. [2022-11-21 16:50:41,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:50:41,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1875 transitions. [2022-11-21 16:50:41,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 52.083333333333336) internal successors, (1875), 36 states have internal predecessors, (1875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:41,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:41,123 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:41,123 INFO L175 Difference]: Start difference. First operand has 420 places, 358 transitions, 4222 flow. Second operand 36 states and 1875 transitions. [2022-11-21 16:50:41,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 375 transitions, 4972 flow [2022-11-21 16:50:41,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 375 transitions, 4624 flow, removed 48 selfloop flow, removed 48 redundant places. [2022-11-21 16:50:41,219 INFO L231 Difference]: Finished difference. Result has 396 places, 342 transitions, 3914 flow [2022-11-21 16:50:41,219 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=3880, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=3914, PETRI_PLACES=396, PETRI_TRANSITIONS=342} [2022-11-21 16:50:41,219 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 308 predicate places. [2022-11-21 16:50:41,219 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 342 transitions, 3914 flow [2022-11-21 16:50:41,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:41,220 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:50:41,220 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:50:41,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2022-11-21 16:50:41,220 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:50:41,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:50:41,220 INFO L85 PathProgramCache]: Analyzing trace with hash 8290352, now seen corresponding path program 123 times [2022-11-21 16:50:41,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:50:41,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080471245] [2022-11-21 16:50:41,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:50:41,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:50:41,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:50:41,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:50:41,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:50:41,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080471245] [2022-11-21 16:50:41,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080471245] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:50:41,749 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:50:41,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-21 16:50:41,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341329472] [2022-11-21 16:50:41,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:50:41,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-21 16:50:41,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:50:41,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-21 16:50:41,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-21 16:50:41,751 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:50:41,752 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 342 transitions, 3914 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:41,752 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:50:41,752 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:50:41,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:50:43,471 INFO L130 PetriNetUnfolder]: 288/861 cut-off events. [2022-11-21 16:50:43,471 INFO L131 PetriNetUnfolder]: For 9400/9400 co-relation queries the response was YES. [2022-11-21 16:50:43,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5896 conditions, 861 events. 288/861 cut-off events. For 9400/9400 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 4549 event pairs, 58 based on Foata normal form. 1/860 useless extension candidates. Maximal degree in co-relation 5765. Up to 518 conditions per place. [2022-11-21 16:50:43,482 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 175 selfloop transitions, 137 changer transitions 23/374 dead transitions. [2022-11-21 16:50:43,482 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 374 transitions, 4911 flow [2022-11-21 16:50:43,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-21 16:50:43,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2022-11-21 16:50:43,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 2146 transitions. [2022-11-21 16:50:43,484 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5568240788790867 [2022-11-21 16:50:43,485 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 2146 transitions. [2022-11-21 16:50:43,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 2146 transitions. [2022-11-21 16:50:43,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:50:43,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 2146 transitions. [2022-11-21 16:50:43,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 52.34146341463415) internal successors, (2146), 41 states have internal predecessors, (2146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:43,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 94.0) internal successors, (3948), 42 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:43,488 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 94.0) internal successors, (3948), 42 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:43,488 INFO L175 Difference]: Start difference. First operand has 396 places, 342 transitions, 3914 flow. Second operand 41 states and 2146 transitions. [2022-11-21 16:50:43,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 374 transitions, 4911 flow [2022-11-21 16:50:43,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 374 transitions, 4609 flow, removed 37 selfloop flow, removed 34 redundant places. [2022-11-21 16:50:43,568 INFO L231 Difference]: Finished difference. Result has 380 places, 341 transitions, 3998 flow [2022-11-21 16:50:43,568 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=3644, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=3998, PETRI_PLACES=380, PETRI_TRANSITIONS=341} [2022-11-21 16:50:43,568 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 292 predicate places. [2022-11-21 16:50:43,568 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 341 transitions, 3998 flow [2022-11-21 16:50:43,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:43,568 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:50:43,568 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:50:43,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2022-11-21 16:50:43,569 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:50:43,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:50:43,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1069779538, now seen corresponding path program 124 times [2022-11-21 16:50:43,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:50:43,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217707153] [2022-11-21 16:50:43,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:50:43,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:50:43,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:50:44,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:50:44,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:50:44,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217707153] [2022-11-21 16:50:44,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217707153] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:50:44,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:50:44,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-21 16:50:44,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961030892] [2022-11-21 16:50:44,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:50:44,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-21 16:50:44,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:50:44,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-21 16:50:44,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-21 16:50:44,078 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:50:44,079 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 341 transitions, 3998 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:44,079 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:50:44,079 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:50:44,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:50:45,654 INFO L130 PetriNetUnfolder]: 281/844 cut-off events. [2022-11-21 16:50:45,655 INFO L131 PetriNetUnfolder]: For 7982/7982 co-relation queries the response was YES. [2022-11-21 16:50:45,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5693 conditions, 844 events. 281/844 cut-off events. For 7982/7982 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 4452 event pairs, 49 based on Foata normal form. 1/843 useless extension candidates. Maximal degree in co-relation 5569. Up to 582 conditions per place. [2022-11-21 16:50:45,664 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 234 selfloop transitions, 77 changer transitions 16/366 dead transitions. [2022-11-21 16:50:45,664 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 366 transitions, 4866 flow [2022-11-21 16:50:45,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-21 16:50:45,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-21 16:50:45,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1734 transitions. [2022-11-21 16:50:45,666 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5589941972920697 [2022-11-21 16:50:45,667 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1734 transitions. [2022-11-21 16:50:45,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1734 transitions. [2022-11-21 16:50:45,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:50:45,667 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1734 transitions. [2022-11-21 16:50:45,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 52.54545454545455) internal successors, (1734), 33 states have internal predecessors, (1734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:45,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:45,670 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:45,670 INFO L175 Difference]: Start difference. First operand has 380 places, 341 transitions, 3998 flow. Second operand 33 states and 1734 transitions. [2022-11-21 16:50:45,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 366 transitions, 4866 flow [2022-11-21 16:50:45,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 366 transitions, 4468 flow, removed 64 selfloop flow, removed 36 redundant places. [2022-11-21 16:50:45,740 INFO L231 Difference]: Finished difference. Result has 377 places, 340 transitions, 3786 flow [2022-11-21 16:50:45,740 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=3613, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=3786, PETRI_PLACES=377, PETRI_TRANSITIONS=340} [2022-11-21 16:50:45,741 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 289 predicate places. [2022-11-21 16:50:45,741 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 340 transitions, 3786 flow [2022-11-21 16:50:45,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:45,741 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:50:45,741 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:50:45,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2022-11-21 16:50:45,741 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:50:45,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:50:45,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1835452708, now seen corresponding path program 125 times [2022-11-21 16:50:45,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:50:45,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952253859] [2022-11-21 16:50:45,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:50:45,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:50:45,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:50:46,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:50:46,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:50:46,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952253859] [2022-11-21 16:50:46,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952253859] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:50:46,255 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:50:46,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-21 16:50:46,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965704204] [2022-11-21 16:50:46,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:50:46,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-21 16:50:46,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:50:46,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-21 16:50:46,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-21 16:50:46,258 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:50:46,258 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 340 transitions, 3786 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:46,258 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:50:46,258 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:50:46,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:50:47,954 INFO L130 PetriNetUnfolder]: 286/870 cut-off events. [2022-11-21 16:50:47,954 INFO L131 PetriNetUnfolder]: For 8039/8039 co-relation queries the response was YES. [2022-11-21 16:50:47,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5715 conditions, 870 events. 286/870 cut-off events. For 8039/8039 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 4690 event pairs, 58 based on Foata normal form. 1/869 useless extension candidates. Maximal degree in co-relation 5588. Up to 563 conditions per place. [2022-11-21 16:50:47,967 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 223 selfloop transitions, 107 changer transitions 17/386 dead transitions. [2022-11-21 16:50:47,967 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 386 transitions, 4935 flow [2022-11-21 16:50:47,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-21 16:50:47,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-21 16:50:47,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1943 transitions. [2022-11-21 16:50:47,969 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.558654399079931 [2022-11-21 16:50:47,969 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1943 transitions. [2022-11-21 16:50:47,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1943 transitions. [2022-11-21 16:50:47,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:50:47,970 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1943 transitions. [2022-11-21 16:50:47,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 52.513513513513516) internal successors, (1943), 37 states have internal predecessors, (1943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:47,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:47,973 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:47,973 INFO L175 Difference]: Start difference. First operand has 377 places, 340 transitions, 3786 flow. Second operand 37 states and 1943 transitions. [2022-11-21 16:50:47,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 386 transitions, 4935 flow [2022-11-21 16:50:48,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 386 transitions, 4730 flow, removed 24 selfloop flow, removed 32 redundant places. [2022-11-21 16:50:48,043 INFO L231 Difference]: Finished difference. Result has 386 places, 356 transitions, 4125 flow [2022-11-21 16:50:48,043 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=3607, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=4125, PETRI_PLACES=386, PETRI_TRANSITIONS=356} [2022-11-21 16:50:48,044 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 298 predicate places. [2022-11-21 16:50:48,044 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 356 transitions, 4125 flow [2022-11-21 16:50:48,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:48,045 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:50:48,045 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:50:48,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2022-11-21 16:50:48,045 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:50:48,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:50:48,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1567221218, now seen corresponding path program 126 times [2022-11-21 16:50:48,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:50:48,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773803647] [2022-11-21 16:50:48,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:50:48,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:50:48,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:50:48,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:50:48,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:50:48,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773803647] [2022-11-21 16:50:48,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773803647] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:50:48,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:50:48,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-21 16:50:48,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985522413] [2022-11-21 16:50:48,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:50:48,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-21 16:50:48,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:50:48,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-21 16:50:48,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-11-21 16:50:48,751 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:50:48,751 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 356 transitions, 4125 flow. Second operand has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:48,751 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:50:48,751 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:50:48,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:50:50,678 INFO L130 PetriNetUnfolder]: 283/877 cut-off events. [2022-11-21 16:50:50,678 INFO L131 PetriNetUnfolder]: For 8094/8094 co-relation queries the response was YES. [2022-11-21 16:50:50,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5791 conditions, 877 events. 283/877 cut-off events. For 8094/8094 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 4769 event pairs, 59 based on Foata normal form. 1/875 useless extension candidates. Maximal degree in co-relation 5660. Up to 500 conditions per place. [2022-11-21 16:50:50,690 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 177 selfloop transitions, 99 changer transitions 67/382 dead transitions. [2022-11-21 16:50:50,690 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 382 transitions, 5028 flow [2022-11-21 16:50:50,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-21 16:50:50,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2022-11-21 16:50:50,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 2142 transitions. [2022-11-21 16:50:50,692 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5557861961598339 [2022-11-21 16:50:50,692 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 2142 transitions. [2022-11-21 16:50:50,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 2142 transitions. [2022-11-21 16:50:50,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:50:50,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 2142 transitions. [2022-11-21 16:50:50,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 52.24390243902439) internal successors, (2142), 41 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:50,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 94.0) internal successors, (3948), 42 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:50,696 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 94.0) internal successors, (3948), 42 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:50,696 INFO L175 Difference]: Start difference. First operand has 386 places, 356 transitions, 4125 flow. Second operand 41 states and 2142 transitions. [2022-11-21 16:50:50,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 382 transitions, 5028 flow [2022-11-21 16:50:50,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 382 transitions, 4835 flow, removed 39 selfloop flow, removed 26 redundant places. [2022-11-21 16:50:50,767 INFO L231 Difference]: Finished difference. Result has 401 places, 305 transitions, 3436 flow [2022-11-21 16:50:50,767 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=3940, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=3436, PETRI_PLACES=401, PETRI_TRANSITIONS=305} [2022-11-21 16:50:50,767 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 313 predicate places. [2022-11-21 16:50:50,767 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 305 transitions, 3436 flow [2022-11-21 16:50:50,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:50,767 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:50:50,768 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:50:50,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2022-11-21 16:50:50,768 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:50:50,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:50:50,768 INFO L85 PathProgramCache]: Analyzing trace with hash 555859176, now seen corresponding path program 127 times [2022-11-21 16:50:50,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:50:50,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683976293] [2022-11-21 16:50:50,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:50:50,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:50:50,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:50:51,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:50:51,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:50:51,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683976293] [2022-11-21 16:50:51,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683976293] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:50:51,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:50:51,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-21 16:50:51,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237907966] [2022-11-21 16:50:51,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:50:51,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-21 16:50:51,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:50:51,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-21 16:50:51,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-21 16:50:51,307 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:50:51,307 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 305 transitions, 3436 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:51,307 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:50:51,307 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:50:51,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:50:53,050 INFO L130 PetriNetUnfolder]: 261/813 cut-off events. [2022-11-21 16:50:53,050 INFO L131 PetriNetUnfolder]: For 8703/8703 co-relation queries the response was YES. [2022-11-21 16:50:53,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5402 conditions, 813 events. 261/813 cut-off events. For 8703/8703 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 4297 event pairs, 44 based on Foata normal form. 1/811 useless extension candidates. Maximal degree in co-relation 5268. Up to 492 conditions per place. [2022-11-21 16:50:53,062 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 167 selfloop transitions, 92 changer transitions 41/339 dead transitions. [2022-11-21 16:50:53,062 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 339 transitions, 4397 flow [2022-11-21 16:50:53,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-21 16:50:53,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-11-21 16:50:53,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 2045 transitions. [2022-11-21 16:50:53,064 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5578286961265685 [2022-11-21 16:50:53,064 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 2045 transitions. [2022-11-21 16:50:53,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 2045 transitions. [2022-11-21 16:50:53,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:50:53,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 2045 transitions. [2022-11-21 16:50:53,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 52.43589743589744) internal successors, (2045), 39 states have internal predecessors, (2045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:53,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 94.0) internal successors, (3760), 40 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:53,070 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 94.0) internal successors, (3760), 40 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:53,070 INFO L175 Difference]: Start difference. First operand has 401 places, 305 transitions, 3436 flow. Second operand 39 states and 2045 transitions. [2022-11-21 16:50:53,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 339 transitions, 4397 flow [2022-11-21 16:50:53,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 339 transitions, 3963 flow, removed 59 selfloop flow, removed 52 redundant places. [2022-11-21 16:50:53,141 INFO L231 Difference]: Finished difference. Result has 378 places, 288 transitions, 3098 flow [2022-11-21 16:50:53,141 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=3051, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=3098, PETRI_PLACES=378, PETRI_TRANSITIONS=288} [2022-11-21 16:50:53,142 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 290 predicate places. [2022-11-21 16:50:53,142 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 288 transitions, 3098 flow [2022-11-21 16:50:53,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:53,142 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:50:53,142 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:50:53,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2022-11-21 16:50:53,143 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:50:53,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:50:53,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1560481334, now seen corresponding path program 128 times [2022-11-21 16:50:53,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:50:53,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164624339] [2022-11-21 16:50:53,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:50:53,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:50:53,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:50:53,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:50:53,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:50:53,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164624339] [2022-11-21 16:50:53,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164624339] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:50:53,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:50:53,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-21 16:50:53,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531268853] [2022-11-21 16:50:53,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:50:53,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-21 16:50:53,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:50:53,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-21 16:50:53,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-11-21 16:50:53,705 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:50:53,706 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 288 transitions, 3098 flow. Second operand has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:53,706 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:50:53,706 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:50:53,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:50:55,564 INFO L130 PetriNetUnfolder]: 250/761 cut-off events. [2022-11-21 16:50:55,564 INFO L131 PetriNetUnfolder]: For 7767/7767 co-relation queries the response was YES. [2022-11-21 16:50:55,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5036 conditions, 761 events. 250/761 cut-off events. For 7767/7767 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3868 event pairs, 49 based on Foata normal form. 1/760 useless extension candidates. Maximal degree in co-relation 4909. Up to 486 conditions per place. [2022-11-21 16:50:55,576 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 160 selfloop transitions, 99 changer transitions 15/313 dead transitions. [2022-11-21 16:50:55,576 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 313 transitions, 3913 flow [2022-11-21 16:50:55,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-21 16:50:55,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-11-21 16:50:55,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 2092 transitions. [2022-11-21 16:50:55,579 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5563829787234043 [2022-11-21 16:50:55,579 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 2092 transitions. [2022-11-21 16:50:55,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 2092 transitions. [2022-11-21 16:50:55,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:50:55,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 2092 transitions. [2022-11-21 16:50:55,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 52.3) internal successors, (2092), 40 states have internal predecessors, (2092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:55,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 94.0) internal successors, (3854), 41 states have internal predecessors, (3854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:55,584 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 94.0) internal successors, (3854), 41 states have internal predecessors, (3854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:55,584 INFO L175 Difference]: Start difference. First operand has 378 places, 288 transitions, 3098 flow. Second operand 40 states and 2092 transitions. [2022-11-21 16:50:55,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 313 transitions, 3913 flow [2022-11-21 16:50:55,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 313 transitions, 3609 flow, removed 77 selfloop flow, removed 35 redundant places. [2022-11-21 16:50:55,639 INFO L231 Difference]: Finished difference. Result has 382 places, 288 transitions, 3102 flow [2022-11-21 16:50:55,639 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2806, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=3102, PETRI_PLACES=382, PETRI_TRANSITIONS=288} [2022-11-21 16:50:55,639 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 294 predicate places. [2022-11-21 16:50:55,640 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 288 transitions, 3102 flow [2022-11-21 16:50:55,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:55,640 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:50:55,640 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:50:55,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2022-11-21 16:50:55,641 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:50:55,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:50:55,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1865751286, now seen corresponding path program 129 times [2022-11-21 16:50:55,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:50:55,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223285919] [2022-11-21 16:50:55,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:50:55,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:50:55,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:50:56,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:50:56,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:50:56,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223285919] [2022-11-21 16:50:56,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223285919] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:50:56,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:50:56,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:50:56,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011445045] [2022-11-21 16:50:56,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:50:56,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:50:56,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:50:56,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:50:56,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:50:56,138 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:50:56,139 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 288 transitions, 3102 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:56,139 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:50:56,139 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:50:56,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:50:57,503 INFO L130 PetriNetUnfolder]: 248/757 cut-off events. [2022-11-21 16:50:57,503 INFO L131 PetriNetUnfolder]: For 7445/7445 co-relation queries the response was YES. [2022-11-21 16:50:57,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4980 conditions, 757 events. 248/757 cut-off events. For 7445/7445 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3859 event pairs, 51 based on Foata normal form. 1/755 useless extension candidates. Maximal degree in co-relation 4852. Up to 506 conditions per place. [2022-11-21 16:50:57,517 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 180 selfloop transitions, 67 changer transitions 22/308 dead transitions. [2022-11-21 16:50:57,517 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 308 transitions, 3734 flow [2022-11-21 16:50:57,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-21 16:50:57,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-21 16:50:57,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1679 transitions. [2022-11-21 16:50:57,519 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5581781914893617 [2022-11-21 16:50:57,519 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1679 transitions. [2022-11-21 16:50:57,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1679 transitions. [2022-11-21 16:50:57,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:50:57,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1679 transitions. [2022-11-21 16:50:57,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 52.46875) internal successors, (1679), 32 states have internal predecessors, (1679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:57,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:57,522 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:57,522 INFO L175 Difference]: Start difference. First operand has 382 places, 288 transitions, 3102 flow. Second operand 32 states and 1679 transitions. [2022-11-21 16:50:57,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 308 transitions, 3734 flow [2022-11-21 16:50:57,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 308 transitions, 3433 flow, removed 53 selfloop flow, removed 38 redundant places. [2022-11-21 16:50:57,577 INFO L231 Difference]: Finished difference. Result has 375 places, 277 transitions, 2826 flow [2022-11-21 16:50:57,578 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2807, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=2826, PETRI_PLACES=375, PETRI_TRANSITIONS=277} [2022-11-21 16:50:57,578 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 287 predicate places. [2022-11-21 16:50:57,578 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 277 transitions, 2826 flow [2022-11-21 16:50:57,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:57,578 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:50:57,579 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:50:57,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2022-11-21 16:50:57,579 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:50:57,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:50:57,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1223279382, now seen corresponding path program 130 times [2022-11-21 16:50:57,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:50:57,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093069414] [2022-11-21 16:50:57,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:50:57,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:50:57,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:50:58,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:50:58,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:50:58,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093069414] [2022-11-21 16:50:58,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093069414] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:50:58,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:50:58,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-21 16:50:58,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033143756] [2022-11-21 16:50:58,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:50:58,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-21 16:50:58,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:50:58,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-21 16:50:58,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-21 16:50:58,186 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:50:58,187 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 277 transitions, 2826 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:58,187 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:50:58,187 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:50:58,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:50:59,641 INFO L130 PetriNetUnfolder]: 244/742 cut-off events. [2022-11-21 16:50:59,641 INFO L131 PetriNetUnfolder]: For 6788/6788 co-relation queries the response was YES. [2022-11-21 16:50:59,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4766 conditions, 742 events. 244/742 cut-off events. For 6788/6788 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3709 event pairs, 57 based on Foata normal form. 1/742 useless extension candidates. Maximal degree in co-relation 4638. Up to 501 conditions per place. [2022-11-21 16:50:59,650 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 173 selfloop transitions, 58 changer transitions 26/296 dead transitions. [2022-11-21 16:50:59,650 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 296 transitions, 3422 flow [2022-11-21 16:50:59,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-21 16:50:59,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-21 16:50:59,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1626 transitions. [2022-11-21 16:50:59,652 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5579958819492107 [2022-11-21 16:50:59,652 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1626 transitions. [2022-11-21 16:50:59,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1626 transitions. [2022-11-21 16:50:59,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:50:59,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1626 transitions. [2022-11-21 16:50:59,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 52.45161290322581) internal successors, (1626), 31 states have internal predecessors, (1626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:59,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:59,655 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:59,655 INFO L175 Difference]: Start difference. First operand has 375 places, 277 transitions, 2826 flow. Second operand 31 states and 1626 transitions. [2022-11-21 16:50:59,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 296 transitions, 3422 flow [2022-11-21 16:50:59,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 296 transitions, 3175 flow, removed 15 selfloop flow, removed 42 redundant places. [2022-11-21 16:50:59,710 INFO L231 Difference]: Finished difference. Result has 355 places, 261 transitions, 2558 flow [2022-11-21 16:50:59,710 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2583, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=2558, PETRI_PLACES=355, PETRI_TRANSITIONS=261} [2022-11-21 16:50:59,710 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 267 predicate places. [2022-11-21 16:50:59,710 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 261 transitions, 2558 flow [2022-11-21 16:50:59,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:59,711 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:50:59,711 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:50:59,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2022-11-21 16:50:59,711 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:50:59,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:50:59,711 INFO L85 PathProgramCache]: Analyzing trace with hash 197787322, now seen corresponding path program 131 times [2022-11-21 16:50:59,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:50:59,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539395801] [2022-11-21 16:50:59,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:50:59,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:50:59,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:51:00,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:51:00,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:51:00,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539395801] [2022-11-21 16:51:00,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539395801] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:51:00,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:51:00,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-21 16:51:00,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160452411] [2022-11-21 16:51:00,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:51:00,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-21 16:51:00,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:51:00,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-21 16:51:00,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-21 16:51:00,261 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:51:00,262 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 261 transitions, 2558 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:00,262 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:51:00,262 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:51:00,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:51:01,771 INFO L130 PetriNetUnfolder]: 238/710 cut-off events. [2022-11-21 16:51:01,771 INFO L131 PetriNetUnfolder]: For 6439/6439 co-relation queries the response was YES. [2022-11-21 16:51:01,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4543 conditions, 710 events. 238/710 cut-off events. For 6439/6439 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 3475 event pairs, 57 based on Foata normal form. 1/710 useless extension candidates. Maximal degree in co-relation 4424. Up to 466 conditions per place. [2022-11-21 16:51:01,779 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 144 selfloop transitions, 77 changer transitions 19/279 dead transitions. [2022-11-21 16:51:01,779 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 279 transitions, 3119 flow [2022-11-21 16:51:01,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-21 16:51:01,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-21 16:51:01,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1783 transitions. [2022-11-21 16:51:01,781 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5578848560700876 [2022-11-21 16:51:01,781 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1783 transitions. [2022-11-21 16:51:01,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1783 transitions. [2022-11-21 16:51:01,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:51:01,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1783 transitions. [2022-11-21 16:51:01,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 52.44117647058823) internal successors, (1783), 34 states have internal predecessors, (1783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:01,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:01,784 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:01,784 INFO L175 Difference]: Start difference. First operand has 355 places, 261 transitions, 2558 flow. Second operand 34 states and 1783 transitions. [2022-11-21 16:51:01,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 279 transitions, 3119 flow [2022-11-21 16:51:01,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 279 transitions, 2884 flow, removed 15 selfloop flow, removed 34 redundant places. [2022-11-21 16:51:01,835 INFO L231 Difference]: Finished difference. Result has 339 places, 250 transitions, 2411 flow [2022-11-21 16:51:01,835 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2329, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=2411, PETRI_PLACES=339, PETRI_TRANSITIONS=250} [2022-11-21 16:51:01,835 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 251 predicate places. [2022-11-21 16:51:01,835 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 250 transitions, 2411 flow [2022-11-21 16:51:01,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:01,835 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:51:01,835 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:51:01,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2022-11-21 16:51:01,836 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:51:01,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:51:01,836 INFO L85 PathProgramCache]: Analyzing trace with hash -989232080, now seen corresponding path program 132 times [2022-11-21 16:51:01,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:51:01,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454798300] [2022-11-21 16:51:01,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:51:01,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:51:01,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:51:02,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:51:02,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:51:02,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454798300] [2022-11-21 16:51:02,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454798300] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:51:02,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:51:02,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-21 16:51:02,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143472210] [2022-11-21 16:51:02,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:51:02,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-21 16:51:02,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:51:02,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-21 16:51:02,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-21 16:51:02,337 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:51:02,338 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 250 transitions, 2411 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:02,338 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:51:02,338 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:51:02,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:51:03,733 INFO L130 PetriNetUnfolder]: 233/692 cut-off events. [2022-11-21 16:51:03,733 INFO L131 PetriNetUnfolder]: For 5696/5696 co-relation queries the response was YES. [2022-11-21 16:51:03,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4346 conditions, 692 events. 233/692 cut-off events. For 5696/5696 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 3319 event pairs, 60 based on Foata normal form. 1/691 useless extension candidates. Maximal degree in co-relation 4233. Up to 469 conditions per place. [2022-11-21 16:51:03,740 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 144 selfloop transitions, 65 changer transitions 19/267 dead transitions. [2022-11-21 16:51:03,740 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 267 transitions, 2945 flow [2022-11-21 16:51:03,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-21 16:51:03,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-21 16:51:03,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1774 transitions. [2022-11-21 16:51:03,742 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5550688360450563 [2022-11-21 16:51:03,742 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1774 transitions. [2022-11-21 16:51:03,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1774 transitions. [2022-11-21 16:51:03,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:51:03,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1774 transitions. [2022-11-21 16:51:03,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 52.1764705882353) internal successors, (1774), 34 states have internal predecessors, (1774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:03,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:03,745 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:03,745 INFO L175 Difference]: Start difference. First operand has 339 places, 250 transitions, 2411 flow. Second operand 34 states and 1774 transitions. [2022-11-21 16:51:03,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 267 transitions, 2945 flow [2022-11-21 16:51:03,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 267 transitions, 2703 flow, removed 13 selfloop flow, removed 37 redundant places. [2022-11-21 16:51:03,785 INFO L231 Difference]: Finished difference. Result has 326 places, 239 transitions, 2238 flow [2022-11-21 16:51:03,785 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2175, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=2238, PETRI_PLACES=326, PETRI_TRANSITIONS=239} [2022-11-21 16:51:03,786 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 238 predicate places. [2022-11-21 16:51:03,786 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 239 transitions, 2238 flow [2022-11-21 16:51:03,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:03,786 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:51:03,786 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:51:03,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2022-11-21 16:51:03,786 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:51:03,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:51:03,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1383495034, now seen corresponding path program 133 times [2022-11-21 16:51:03,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:51:03,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423110130] [2022-11-21 16:51:03,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:51:03,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:51:03,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:51:04,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:51:04,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:51:04,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423110130] [2022-11-21 16:51:04,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423110130] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:51:04,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:51:04,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-21 16:51:04,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830502874] [2022-11-21 16:51:04,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:51:04,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-21 16:51:04,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:51:04,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-21 16:51:04,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-21 16:51:04,377 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:51:04,378 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 239 transitions, 2238 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:04,378 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:51:04,378 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:51:04,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:51:05,915 INFO L130 PetriNetUnfolder]: 230/676 cut-off events. [2022-11-21 16:51:05,916 INFO L131 PetriNetUnfolder]: For 5231/5231 co-relation queries the response was YES. [2022-11-21 16:51:05,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4189 conditions, 676 events. 230/676 cut-off events. For 5231/5231 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 3210 event pairs, 60 based on Foata normal form. 1/675 useless extension candidates. Maximal degree in co-relation 4081. Up to 450 conditions per place. [2022-11-21 16:51:05,922 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 131 selfloop transitions, 61 changer transitions 27/258 dead transitions. [2022-11-21 16:51:05,922 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 258 transitions, 2756 flow [2022-11-21 16:51:05,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-21 16:51:05,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-21 16:51:05,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1781 transitions. [2022-11-21 16:51:05,924 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5572590738423029 [2022-11-21 16:51:05,925 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1781 transitions. [2022-11-21 16:51:05,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1781 transitions. [2022-11-21 16:51:05,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:51:05,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1781 transitions. [2022-11-21 16:51:05,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 52.38235294117647) internal successors, (1781), 34 states have internal predecessors, (1781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:05,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:05,927 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:05,927 INFO L175 Difference]: Start difference. First operand has 326 places, 239 transitions, 2238 flow. Second operand 34 states and 1781 transitions. [2022-11-21 16:51:05,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 258 transitions, 2756 flow [2022-11-21 16:51:05,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 258 transitions, 2548 flow, removed 11 selfloop flow, removed 39 redundant places. [2022-11-21 16:51:05,961 INFO L231 Difference]: Finished difference. Result has 312 places, 222 transitions, 2037 flow [2022-11-21 16:51:05,961 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2036, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=2037, PETRI_PLACES=312, PETRI_TRANSITIONS=222} [2022-11-21 16:51:05,961 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 224 predicate places. [2022-11-21 16:51:05,961 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 222 transitions, 2037 flow [2022-11-21 16:51:05,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:05,961 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:51:05,962 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:51:05,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2022-11-21 16:51:05,962 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:51:05,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:51:05,962 INFO L85 PathProgramCache]: Analyzing trace with hash -581400274, now seen corresponding path program 134 times [2022-11-21 16:51:05,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:51:05,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379938271] [2022-11-21 16:51:05,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:51:05,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:51:05,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:51:06,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:51:06,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:51:06,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379938271] [2022-11-21 16:51:06,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379938271] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:51:06,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:51:06,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-21 16:51:06,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215544488] [2022-11-21 16:51:06,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:51:06,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-21 16:51:06,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:51:06,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-21 16:51:06,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-11-21 16:51:06,575 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:51:06,575 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 222 transitions, 2037 flow. Second operand has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:06,575 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:51:06,575 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:51:06,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:51:08,069 INFO L130 PetriNetUnfolder]: 223/655 cut-off events. [2022-11-21 16:51:08,069 INFO L131 PetriNetUnfolder]: For 4651/4651 co-relation queries the response was YES. [2022-11-21 16:51:08,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3981 conditions, 655 events. 223/655 cut-off events. For 4651/4651 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 3050 event pairs, 58 based on Foata normal form. 1/654 useless extension candidates. Maximal degree in co-relation 3878. Up to 447 conditions per place. [2022-11-21 16:51:08,076 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 128 selfloop transitions, 55 changer transitions 19/241 dead transitions. [2022-11-21 16:51:08,076 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 241 transitions, 2521 flow [2022-11-21 16:51:08,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-21 16:51:08,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-21 16:51:08,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1668 transitions. [2022-11-21 16:51:08,081 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5545212765957447 [2022-11-21 16:51:08,081 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1668 transitions. [2022-11-21 16:51:08,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1668 transitions. [2022-11-21 16:51:08,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:51:08,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1668 transitions. [2022-11-21 16:51:08,083 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 52.125) internal successors, (1668), 32 states have internal predecessors, (1668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:08,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:08,085 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:08,085 INFO L175 Difference]: Start difference. First operand has 312 places, 222 transitions, 2037 flow. Second operand 32 states and 1668 transitions. [2022-11-21 16:51:08,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 241 transitions, 2521 flow [2022-11-21 16:51:08,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 241 transitions, 2313 flow, removed 14 selfloop flow, removed 36 redundant places. [2022-11-21 16:51:08,118 INFO L231 Difference]: Finished difference. Result has 292 places, 213 transitions, 1895 flow [2022-11-21 16:51:08,118 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1835, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1895, PETRI_PLACES=292, PETRI_TRANSITIONS=213} [2022-11-21 16:51:08,118 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 204 predicate places. [2022-11-21 16:51:08,118 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 213 transitions, 1895 flow [2022-11-21 16:51:08,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:08,119 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:51:08,119 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:51:08,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2022-11-21 16:51:08,119 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:51:08,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:51:08,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1296539176, now seen corresponding path program 135 times [2022-11-21 16:51:08,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:51:08,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330859652] [2022-11-21 16:51:08,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:51:08,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:51:08,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:51:08,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:51:08,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:51:08,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330859652] [2022-11-21 16:51:08,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330859652] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:51:08,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:51:08,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-21 16:51:08,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94039985] [2022-11-21 16:51:08,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:51:08,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-21 16:51:08,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:51:08,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-21 16:51:08,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-11-21 16:51:08,638 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:51:08,639 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 213 transitions, 1895 flow. Second operand has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:08,639 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:51:08,640 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:51:08,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:51:10,034 INFO L130 PetriNetUnfolder]: 221/639 cut-off events. [2022-11-21 16:51:10,035 INFO L131 PetriNetUnfolder]: For 4757/4757 co-relation queries the response was YES. [2022-11-21 16:51:10,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3859 conditions, 639 events. 221/639 cut-off events. For 4757/4757 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2912 event pairs, 43 based on Foata normal form. 1/638 useless extension candidates. Maximal degree in co-relation 3761. Up to 433 conditions per place. [2022-11-21 16:51:10,041 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 116 selfloop transitions, 46 changer transitions 31/232 dead transitions. [2022-11-21 16:51:10,042 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 232 transitions, 2361 flow [2022-11-21 16:51:10,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-21 16:51:10,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-21 16:51:10,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1670 transitions. [2022-11-21 16:51:10,045 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.555186170212766 [2022-11-21 16:51:10,045 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1670 transitions. [2022-11-21 16:51:10,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1670 transitions. [2022-11-21 16:51:10,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:51:10,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1670 transitions. [2022-11-21 16:51:10,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 52.1875) internal successors, (1670), 32 states have internal predecessors, (1670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:10,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:10,050 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:10,051 INFO L175 Difference]: Start difference. First operand has 292 places, 213 transitions, 1895 flow. Second operand 32 states and 1670 transitions. [2022-11-21 16:51:10,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 232 transitions, 2361 flow [2022-11-21 16:51:10,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 232 transitions, 2157 flow, removed 12 selfloop flow, removed 29 redundant places. [2022-11-21 16:51:10,124 INFO L231 Difference]: Finished difference. Result has 280 places, 193 transitions, 1667 flow [2022-11-21 16:51:10,124 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1697, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1667, PETRI_PLACES=280, PETRI_TRANSITIONS=193} [2022-11-21 16:51:10,125 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 192 predicate places. [2022-11-21 16:51:10,125 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 193 transitions, 1667 flow [2022-11-21 16:51:10,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:10,125 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:51:10,126 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:51:10,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2022-11-21 16:51:10,126 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:51:10,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:51:10,127 INFO L85 PathProgramCache]: Analyzing trace with hash 506806154, now seen corresponding path program 136 times [2022-11-21 16:51:10,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:51:10,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875704664] [2022-11-21 16:51:10,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:51:10,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:51:10,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:51:10,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:51:10,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:51:10,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875704664] [2022-11-21 16:51:10,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875704664] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:51:10,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:51:10,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:51:10,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345305939] [2022-11-21 16:51:10,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:51:10,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:51:10,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:51:10,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:51:10,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:51:10,593 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:51:10,593 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 193 transitions, 1667 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:10,593 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:51:10,593 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:51:10,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:51:12,062 INFO L130 PetriNetUnfolder]: 243/678 cut-off events. [2022-11-21 16:51:12,062 INFO L131 PetriNetUnfolder]: For 4913/4913 co-relation queries the response was YES. [2022-11-21 16:51:12,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4086 conditions, 678 events. 243/678 cut-off events. For 4913/4913 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 3179 event pairs, 56 based on Foata normal form. 1/677 useless extension candidates. Maximal degree in co-relation 3992. Up to 408 conditions per place. [2022-11-21 16:51:12,068 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 117 selfloop transitions, 66 changer transitions 35/257 dead transitions. [2022-11-21 16:51:12,068 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 257 transitions, 2836 flow [2022-11-21 16:51:12,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-21 16:51:12,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-21 16:51:12,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1812 transitions. [2022-11-21 16:51:12,071 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5669586983729662 [2022-11-21 16:51:12,071 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1812 transitions. [2022-11-21 16:51:12,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1812 transitions. [2022-11-21 16:51:12,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:51:12,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1812 transitions. [2022-11-21 16:51:12,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.294117647058826) internal successors, (1812), 34 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:12,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:12,074 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:12,074 INFO L175 Difference]: Start difference. First operand has 280 places, 193 transitions, 1667 flow. Second operand 34 states and 1812 transitions. [2022-11-21 16:51:12,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 257 transitions, 2836 flow [2022-11-21 16:51:12,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 257 transitions, 2453 flow, removed 70 selfloop flow, removed 28 redundant places. [2022-11-21 16:51:12,100 INFO L231 Difference]: Finished difference. Result has 264 places, 203 transitions, 1725 flow [2022-11-21 16:51:12,100 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1380, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=1725, PETRI_PLACES=264, PETRI_TRANSITIONS=203} [2022-11-21 16:51:12,100 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 176 predicate places. [2022-11-21 16:51:12,100 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 203 transitions, 1725 flow [2022-11-21 16:51:12,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:12,101 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:51:12,101 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:51:12,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2022-11-21 16:51:12,101 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:51:12,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:51:12,101 INFO L85 PathProgramCache]: Analyzing trace with hash -591456042, now seen corresponding path program 137 times [2022-11-21 16:51:12,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:51:12,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352074915] [2022-11-21 16:51:12,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:51:12,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:51:12,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:51:12,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:51:12,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:51:12,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352074915] [2022-11-21 16:51:12,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352074915] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:51:12,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:51:12,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-21 16:51:12,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888594199] [2022-11-21 16:51:12,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:51:12,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-21 16:51:12,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:51:12,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-21 16:51:12,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-11-21 16:51:12,528 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:51:12,528 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 203 transitions, 1725 flow. Second operand has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:12,528 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:51:12,528 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:51:12,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:51:14,007 INFO L130 PetriNetUnfolder]: 289/796 cut-off events. [2022-11-21 16:51:14,007 INFO L131 PetriNetUnfolder]: For 7118/7118 co-relation queries the response was YES. [2022-11-21 16:51:14,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4889 conditions, 796 events. 289/796 cut-off events. For 7118/7118 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 3866 event pairs, 57 based on Foata normal form. 1/795 useless extension candidates. Maximal degree in co-relation 4796. Up to 473 conditions per place. [2022-11-21 16:51:14,015 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 150 selfloop transitions, 99 changer transitions 21/309 dead transitions. [2022-11-21 16:51:14,015 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 309 transitions, 3748 flow [2022-11-21 16:51:14,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-21 16:51:14,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-21 16:51:14,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1873 transitions. [2022-11-21 16:51:14,017 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5693009118541034 [2022-11-21 16:51:14,017 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1873 transitions. [2022-11-21 16:51:14,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1873 transitions. [2022-11-21 16:51:14,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:51:14,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1873 transitions. [2022-11-21 16:51:14,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 53.51428571428571) internal successors, (1873), 35 states have internal predecessors, (1873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:14,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:14,021 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:14,021 INFO L175 Difference]: Start difference. First operand has 264 places, 203 transitions, 1725 flow. Second operand 35 states and 1873 transitions. [2022-11-21 16:51:14,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 309 transitions, 3748 flow [2022-11-21 16:51:14,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 309 transitions, 3334 flow, removed 154 selfloop flow, removed 28 redundant places. [2022-11-21 16:51:14,054 INFO L231 Difference]: Finished difference. Result has 273 places, 257 transitions, 2635 flow [2022-11-21 16:51:14,055 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1527, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=2635, PETRI_PLACES=273, PETRI_TRANSITIONS=257} [2022-11-21 16:51:14,055 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 185 predicate places. [2022-11-21 16:51:14,055 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 257 transitions, 2635 flow [2022-11-21 16:51:14,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:14,055 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:51:14,055 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:51:14,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2022-11-21 16:51:14,055 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:51:14,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:51:14,056 INFO L85 PathProgramCache]: Analyzing trace with hash 38226082, now seen corresponding path program 138 times [2022-11-21 16:51:14,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:51:14,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889137266] [2022-11-21 16:51:14,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:51:14,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:51:14,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:51:14,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:51:14,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:51:14,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889137266] [2022-11-21 16:51:14,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889137266] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:51:14,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:51:14,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:51:14,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092424889] [2022-11-21 16:51:14,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:51:14,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:51:14,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:51:14,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:51:14,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:51:14,527 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:51:14,527 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 257 transitions, 2635 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:14,527 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:51:14,527 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:51:14,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:51:16,249 INFO L130 PetriNetUnfolder]: 339/912 cut-off events. [2022-11-21 16:51:16,249 INFO L131 PetriNetUnfolder]: For 10717/10717 co-relation queries the response was YES. [2022-11-21 16:51:16,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6149 conditions, 912 events. 339/912 cut-off events. For 10717/10717 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 4646 event pairs, 54 based on Foata normal form. 1/911 useless extension candidates. Maximal degree in co-relation 6053. Up to 494 conditions per place. [2022-11-21 16:51:16,258 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 145 selfloop transitions, 157 changer transitions 21/362 dead transitions. [2022-11-21 16:51:16,258 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 362 transitions, 4767 flow [2022-11-21 16:51:16,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-21 16:51:16,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-11-21 16:51:16,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 2125 transitions. [2022-11-21 16:51:16,261 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5651595744680851 [2022-11-21 16:51:16,261 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 2125 transitions. [2022-11-21 16:51:16,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 2125 transitions. [2022-11-21 16:51:16,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:51:16,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 2125 transitions. [2022-11-21 16:51:16,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 53.125) internal successors, (2125), 40 states have internal predecessors, (2125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:16,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 94.0) internal successors, (3854), 41 states have internal predecessors, (3854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:16,264 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 94.0) internal successors, (3854), 41 states have internal predecessors, (3854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:16,264 INFO L175 Difference]: Start difference. First operand has 273 places, 257 transitions, 2635 flow. Second operand 40 states and 2125 transitions. [2022-11-21 16:51:16,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 362 transitions, 4767 flow [2022-11-21 16:51:16,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 362 transitions, 4299 flow, removed 215 selfloop flow, removed 10 redundant places. [2022-11-21 16:51:16,308 INFO L231 Difference]: Finished difference. Result has 310 places, 310 transitions, 3580 flow [2022-11-21 16:51:16,308 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2171, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=3580, PETRI_PLACES=310, PETRI_TRANSITIONS=310} [2022-11-21 16:51:16,308 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 222 predicate places. [2022-11-21 16:51:16,308 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 310 transitions, 3580 flow [2022-11-21 16:51:16,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:16,309 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:51:16,309 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:51:16,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2022-11-21 16:51:16,309 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:51:16,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:51:16,309 INFO L85 PathProgramCache]: Analyzing trace with hash -41106020, now seen corresponding path program 139 times [2022-11-21 16:51:16,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:51:16,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864216968] [2022-11-21 16:51:16,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:51:16,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:51:16,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:51:16,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:51:16,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:51:16,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864216968] [2022-11-21 16:51:16,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864216968] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:51:16,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:51:16,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-21 16:51:16,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058617254] [2022-11-21 16:51:16,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:51:16,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-21 16:51:16,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:51:16,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-21 16:51:16,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-11-21 16:51:16,728 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:51:16,728 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 310 transitions, 3580 flow. Second operand has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:16,729 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:51:16,729 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:51:16,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:51:18,116 INFO L130 PetriNetUnfolder]: 348/946 cut-off events. [2022-11-21 16:51:18,116 INFO L131 PetriNetUnfolder]: For 14251/14251 co-relation queries the response was YES. [2022-11-21 16:51:18,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6906 conditions, 946 events. 348/946 cut-off events. For 14251/14251 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 5036 event pairs, 75 based on Foata normal form. 1/945 useless extension candidates. Maximal degree in co-relation 6797. Up to 644 conditions per place. [2022-11-21 16:51:18,129 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 224 selfloop transitions, 73 changer transitions 35/371 dead transitions. [2022-11-21 16:51:18,129 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 371 transitions, 4956 flow [2022-11-21 16:51:18,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-21 16:51:18,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-11-21 16:51:18,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 1558 transitions. [2022-11-21 16:51:18,131 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5715333822450477 [2022-11-21 16:51:18,131 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 1558 transitions. [2022-11-21 16:51:18,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 1558 transitions. [2022-11-21 16:51:18,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:51:18,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 1558 transitions. [2022-11-21 16:51:18,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 53.724137931034484) internal successors, (1558), 29 states have internal predecessors, (1558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:18,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 94.0) internal successors, (2820), 30 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:18,135 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 94.0) internal successors, (2820), 30 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:18,136 INFO L175 Difference]: Start difference. First operand has 310 places, 310 transitions, 3580 flow. Second operand 29 states and 1558 transitions. [2022-11-21 16:51:18,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 371 transitions, 4956 flow [2022-11-21 16:51:18,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 371 transitions, 4412 flow, removed 241 selfloop flow, removed 15 redundant places. [2022-11-21 16:51:18,229 INFO L231 Difference]: Finished difference. Result has 330 places, 318 transitions, 3392 flow [2022-11-21 16:51:18,229 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=3047, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=3392, PETRI_PLACES=330, PETRI_TRANSITIONS=318} [2022-11-21 16:51:18,230 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 242 predicate places. [2022-11-21 16:51:18,230 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 318 transitions, 3392 flow [2022-11-21 16:51:18,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:18,230 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:51:18,230 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:51:18,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2022-11-21 16:51:18,230 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:51:18,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:51:18,230 INFO L85 PathProgramCache]: Analyzing trace with hash 704169166, now seen corresponding path program 140 times [2022-11-21 16:51:18,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:51:18,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733400403] [2022-11-21 16:51:18,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:51:18,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:51:18,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:51:18,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:51:18,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:51:18,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733400403] [2022-11-21 16:51:18,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733400403] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:51:18,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:51:18,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:51:18,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346661788] [2022-11-21 16:51:18,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:51:18,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:51:18,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:51:18,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:51:18,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:51:18,735 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:51:18,735 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 318 transitions, 3392 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:18,735 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:51:18,735 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:51:18,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:51:20,341 INFO L130 PetriNetUnfolder]: 348/956 cut-off events. [2022-11-21 16:51:20,341 INFO L131 PetriNetUnfolder]: For 14783/14783 co-relation queries the response was YES. [2022-11-21 16:51:20,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6944 conditions, 956 events. 348/956 cut-off events. For 14783/14783 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 5179 event pairs, 74 based on Foata normal form. 1/955 useless extension candidates. Maximal degree in co-relation 6823. Up to 612 conditions per place. [2022-11-21 16:51:20,352 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 202 selfloop transitions, 105 changer transitions 35/381 dead transitions. [2022-11-21 16:51:20,352 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 381 transitions, 4899 flow [2022-11-21 16:51:20,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-21 16:51:20,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-21 16:51:20,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1812 transitions. [2022-11-21 16:51:20,354 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5669586983729662 [2022-11-21 16:51:20,354 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1812 transitions. [2022-11-21 16:51:20,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1812 transitions. [2022-11-21 16:51:20,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:51:20,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1812 transitions. [2022-11-21 16:51:20,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.294117647058826) internal successors, (1812), 34 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:20,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:20,359 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:20,359 INFO L175 Difference]: Start difference. First operand has 330 places, 318 transitions, 3392 flow. Second operand 34 states and 1812 transitions. [2022-11-21 16:51:20,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 381 transitions, 4899 flow [2022-11-21 16:51:20,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 381 transitions, 4604 flow, removed 100 selfloop flow, removed 26 redundant places. [2022-11-21 16:51:20,427 INFO L231 Difference]: Finished difference. Result has 341 places, 326 transitions, 3602 flow [2022-11-21 16:51:20,428 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=3175, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=3602, PETRI_PLACES=341, PETRI_TRANSITIONS=326} [2022-11-21 16:51:20,428 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 253 predicate places. [2022-11-21 16:51:20,428 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 326 transitions, 3602 flow [2022-11-21 16:51:20,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:20,428 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:51:20,428 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:51:20,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2022-11-21 16:51:20,428 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:51:20,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:51:20,429 INFO L85 PathProgramCache]: Analyzing trace with hash -513212898, now seen corresponding path program 141 times [2022-11-21 16:51:20,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:51:20,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612606086] [2022-11-21 16:51:20,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:51:20,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:51:20,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:51:20,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:51:20,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:51:20,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612606086] [2022-11-21 16:51:20,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612606086] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:51:20,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:51:20,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:51:20,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965837890] [2022-11-21 16:51:20,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:51:20,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:51:20,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:51:20,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:51:20,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:51:20,942 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:51:20,943 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 326 transitions, 3602 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:20,943 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:51:20,943 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:51:20,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:51:22,568 INFO L130 PetriNetUnfolder]: 354/996 cut-off events. [2022-11-21 16:51:22,568 INFO L131 PetriNetUnfolder]: For 14120/14120 co-relation queries the response was YES. [2022-11-21 16:51:22,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7120 conditions, 996 events. 354/996 cut-off events. For 14120/14120 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 5600 event pairs, 65 based on Foata normal form. 1/995 useless extension candidates. Maximal degree in co-relation 6997. Up to 646 conditions per place. [2022-11-21 16:51:22,581 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 223 selfloop transitions, 98 changer transitions 35/395 dead transitions. [2022-11-21 16:51:22,581 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 395 transitions, 5258 flow [2022-11-21 16:51:22,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-21 16:51:22,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-21 16:51:22,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1756 transitions. [2022-11-21 16:51:22,584 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.56608639587363 [2022-11-21 16:51:22,584 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1756 transitions. [2022-11-21 16:51:22,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1756 transitions. [2022-11-21 16:51:22,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:51:22,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1756 transitions. [2022-11-21 16:51:22,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 53.21212121212121) internal successors, (1756), 33 states have internal predecessors, (1756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:22,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:22,588 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:22,588 INFO L175 Difference]: Start difference. First operand has 341 places, 326 transitions, 3602 flow. Second operand 33 states and 1756 transitions. [2022-11-21 16:51:22,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 395 transitions, 5258 flow [2022-11-21 16:51:22,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 395 transitions, 4907 flow, removed 122 selfloop flow, removed 29 redundant places. [2022-11-21 16:51:22,665 INFO L231 Difference]: Finished difference. Result has 348 places, 341 transitions, 3896 flow [2022-11-21 16:51:22,665 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=3391, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=3896, PETRI_PLACES=348, PETRI_TRANSITIONS=341} [2022-11-21 16:51:22,666 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 260 predicate places. [2022-11-21 16:51:22,666 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 341 transitions, 3896 flow [2022-11-21 16:51:22,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:22,666 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:51:22,667 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:51:22,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2022-11-21 16:51:22,667 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:51:22,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:51:22,667 INFO L85 PathProgramCache]: Analyzing trace with hash -654896460, now seen corresponding path program 142 times [2022-11-21 16:51:22,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:51:22,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861529022] [2022-11-21 16:51:22,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:51:22,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:51:22,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:51:23,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:51:23,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:51:23,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861529022] [2022-11-21 16:51:23,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861529022] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:51:23,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:51:23,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:51:23,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234391879] [2022-11-21 16:51:23,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:51:23,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:51:23,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:51:23,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:51:23,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:51:23,207 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:51:23,207 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 341 transitions, 3896 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:23,207 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:51:23,208 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:51:23,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:51:25,073 INFO L130 PetriNetUnfolder]: 355/999 cut-off events. [2022-11-21 16:51:25,073 INFO L131 PetriNetUnfolder]: For 14015/14015 co-relation queries the response was YES. [2022-11-21 16:51:25,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7188 conditions, 999 events. 355/999 cut-off events. For 14015/14015 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 5670 event pairs, 68 based on Foata normal form. 1/997 useless extension candidates. Maximal degree in co-relation 7062. Up to 647 conditions per place. [2022-11-21 16:51:25,084 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 222 selfloop transitions, 102 changer transitions 35/398 dead transitions. [2022-11-21 16:51:25,084 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 398 transitions, 5356 flow [2022-11-21 16:51:25,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-21 16:51:25,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-21 16:51:25,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1805 transitions. [2022-11-21 16:51:25,086 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5647684605757196 [2022-11-21 16:51:25,086 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1805 transitions. [2022-11-21 16:51:25,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1805 transitions. [2022-11-21 16:51:25,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:51:25,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1805 transitions. [2022-11-21 16:51:25,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.088235294117645) internal successors, (1805), 34 states have internal predecessors, (1805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:25,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:25,089 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:25,089 INFO L175 Difference]: Start difference. First operand has 348 places, 341 transitions, 3896 flow. Second operand 34 states and 1805 transitions. [2022-11-21 16:51:25,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 398 transitions, 5356 flow [2022-11-21 16:51:25,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 398 transitions, 5126 flow, removed 66 selfloop flow, removed 26 redundant places. [2022-11-21 16:51:25,160 INFO L231 Difference]: Finished difference. Result has 359 places, 344 transitions, 4068 flow [2022-11-21 16:51:25,160 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=3708, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=4068, PETRI_PLACES=359, PETRI_TRANSITIONS=344} [2022-11-21 16:51:25,160 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 271 predicate places. [2022-11-21 16:51:25,160 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 344 transitions, 4068 flow [2022-11-21 16:51:25,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:25,160 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:51:25,160 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:51:25,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2022-11-21 16:51:25,161 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:51:25,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:51:25,161 INFO L85 PathProgramCache]: Analyzing trace with hash -489428494, now seen corresponding path program 143 times [2022-11-21 16:51:25,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:51:25,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114475362] [2022-11-21 16:51:25,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:51:25,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:51:25,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:51:25,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:51:25,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:51:25,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114475362] [2022-11-21 16:51:25,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114475362] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:51:25,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:51:25,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:51:25,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442085852] [2022-11-21 16:51:25,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:51:25,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:51:25,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:51:25,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:51:25,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:51:25,679 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:51:25,679 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 344 transitions, 4068 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:25,679 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:51:25,679 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:51:25,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:51:27,392 INFO L130 PetriNetUnfolder]: 362/986 cut-off events. [2022-11-21 16:51:27,393 INFO L131 PetriNetUnfolder]: For 14888/14888 co-relation queries the response was YES. [2022-11-21 16:51:27,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7466 conditions, 986 events. 362/986 cut-off events. For 14888/14888 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 5491 event pairs, 57 based on Foata normal form. 1/983 useless extension candidates. Maximal degree in co-relation 7336. Up to 656 conditions per place. [2022-11-21 16:51:27,408 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 228 selfloop transitions, 114 changer transitions 33/414 dead transitions. [2022-11-21 16:51:27,408 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 414 transitions, 5805 flow [2022-11-21 16:51:27,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-21 16:51:27,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-21 16:51:27,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1959 transitions. [2022-11-21 16:51:27,411 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5632547441058079 [2022-11-21 16:51:27,411 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1959 transitions. [2022-11-21 16:51:27,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1959 transitions. [2022-11-21 16:51:27,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:51:27,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1959 transitions. [2022-11-21 16:51:27,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 52.945945945945944) internal successors, (1959), 37 states have internal predecessors, (1959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:27,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:27,414 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:27,414 INFO L175 Difference]: Start difference. First operand has 359 places, 344 transitions, 4068 flow. Second operand 37 states and 1959 transitions. [2022-11-21 16:51:27,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 414 transitions, 5805 flow [2022-11-21 16:51:27,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 414 transitions, 5529 flow, removed 65 selfloop flow, removed 31 redundant places. [2022-11-21 16:51:27,494 INFO L231 Difference]: Finished difference. Result has 369 places, 361 transitions, 4508 flow [2022-11-21 16:51:27,495 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=3850, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=4508, PETRI_PLACES=369, PETRI_TRANSITIONS=361} [2022-11-21 16:51:27,495 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 281 predicate places. [2022-11-21 16:51:27,495 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 361 transitions, 4508 flow [2022-11-21 16:51:27,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:27,495 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:51:27,495 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:51:27,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2022-11-21 16:51:27,496 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:51:27,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:51:27,496 INFO L85 PathProgramCache]: Analyzing trace with hash -691042608, now seen corresponding path program 144 times [2022-11-21 16:51:27,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:51:27,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825185717] [2022-11-21 16:51:27,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:51:27,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:51:27,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:51:27,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:51:27,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:51:27,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825185717] [2022-11-21 16:51:27,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825185717] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:51:27,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:51:27,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:51:27,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675118366] [2022-11-21 16:51:27,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:51:27,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:51:27,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:51:27,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:51:27,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:51:27,951 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:51:27,951 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 361 transitions, 4508 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:27,951 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:51:27,952 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:51:27,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:51:29,565 INFO L130 PetriNetUnfolder]: 353/1010 cut-off events. [2022-11-21 16:51:29,566 INFO L131 PetriNetUnfolder]: For 14351/14351 co-relation queries the response was YES. [2022-11-21 16:51:29,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7486 conditions, 1010 events. 353/1010 cut-off events. For 14351/14351 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 5753 event pairs, 67 based on Foata normal form. 1/1008 useless extension candidates. Maximal degree in co-relation 7353. Up to 648 conditions per place. [2022-11-21 16:51:29,577 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 226 selfloop transitions, 98 changer transitions 43/406 dead transitions. [2022-11-21 16:51:29,577 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 406 transitions, 5750 flow [2022-11-21 16:51:29,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-21 16:51:29,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-21 16:51:29,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1805 transitions. [2022-11-21 16:51:29,580 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5647684605757196 [2022-11-21 16:51:29,580 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1805 transitions. [2022-11-21 16:51:29,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1805 transitions. [2022-11-21 16:51:29,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:51:29,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1805 transitions. [2022-11-21 16:51:29,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.088235294117645) internal successors, (1805), 34 states have internal predecessors, (1805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:29,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:29,583 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:29,583 INFO L175 Difference]: Start difference. First operand has 369 places, 361 transitions, 4508 flow. Second operand 34 states and 1805 transitions. [2022-11-21 16:51:29,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 406 transitions, 5750 flow [2022-11-21 16:51:29,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 406 transitions, 5417 flow, removed 98 selfloop flow, removed 28 redundant places. [2022-11-21 16:51:29,664 INFO L231 Difference]: Finished difference. Result has 376 places, 345 transitions, 4276 flow [2022-11-21 16:51:29,665 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=4211, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=4276, PETRI_PLACES=376, PETRI_TRANSITIONS=345} [2022-11-21 16:51:29,665 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 288 predicate places. [2022-11-21 16:51:29,665 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 345 transitions, 4276 flow [2022-11-21 16:51:29,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:29,665 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:51:29,665 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:51:29,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2022-11-21 16:51:29,665 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:51:29,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:51:29,666 INFO L85 PathProgramCache]: Analyzing trace with hash -2062737244, now seen corresponding path program 145 times [2022-11-21 16:51:29,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:51:29,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653180087] [2022-11-21 16:51:29,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:51:29,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:51:29,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:51:30,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:51:30,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:51:30,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653180087] [2022-11-21 16:51:30,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653180087] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:51:30,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:51:30,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-21 16:51:30,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291080195] [2022-11-21 16:51:30,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:51:30,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-21 16:51:30,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:51:30,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-21 16:51:30,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-21 16:51:30,292 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:51:30,293 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 345 transitions, 4276 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:30,293 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:51:30,293 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:51:30,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:51:32,604 INFO L130 PetriNetUnfolder]: 421/1179 cut-off events. [2022-11-21 16:51:32,604 INFO L131 PetriNetUnfolder]: For 18745/18745 co-relation queries the response was YES. [2022-11-21 16:51:32,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9027 conditions, 1179 events. 421/1179 cut-off events. For 18745/18745 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 6975 event pairs, 66 based on Foata normal form. 1/1177 useless extension candidates. Maximal degree in co-relation 8891. Up to 667 conditions per place. [2022-11-21 16:51:32,620 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 241 selfloop transitions, 218 changer transitions 21/519 dead transitions. [2022-11-21 16:51:32,620 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 519 transitions, 7845 flow [2022-11-21 16:51:32,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-11-21 16:51:32,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2022-11-21 16:51:32,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 2784 transitions. [2022-11-21 16:51:32,623 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5588117221999197 [2022-11-21 16:51:32,623 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 2784 transitions. [2022-11-21 16:51:32,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 2784 transitions. [2022-11-21 16:51:32,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:51:32,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 2784 transitions. [2022-11-21 16:51:32,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 52.528301886792455) internal successors, (2784), 53 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:32,628 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 94.0) internal successors, (5076), 54 states have internal predecessors, (5076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:32,629 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 94.0) internal successors, (5076), 54 states have internal predecessors, (5076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:32,629 INFO L175 Difference]: Start difference. First operand has 376 places, 345 transitions, 4276 flow. Second operand 53 states and 2784 transitions. [2022-11-21 16:51:32,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 519 transitions, 7845 flow [2022-11-21 16:51:32,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 519 transitions, 7400 flow, removed 71 selfloop flow, removed 37 redundant places. [2022-11-21 16:51:32,731 INFO L231 Difference]: Finished difference. Result has 396 places, 471 transitions, 6615 flow [2022-11-21 16:51:32,731 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=3940, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=6615, PETRI_PLACES=396, PETRI_TRANSITIONS=471} [2022-11-21 16:51:32,732 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 308 predicate places. [2022-11-21 16:51:32,732 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 471 transitions, 6615 flow [2022-11-21 16:51:32,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:32,732 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:51:32,732 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:51:32,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2022-11-21 16:51:32,732 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:51:32,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:51:32,733 INFO L85 PathProgramCache]: Analyzing trace with hash -58120972, now seen corresponding path program 146 times [2022-11-21 16:51:32,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:51:32,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682401618] [2022-11-21 16:51:32,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:51:32,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:51:32,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:51:33,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:51:33,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:51:33,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682401618] [2022-11-21 16:51:33,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682401618] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:51:33,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:51:33,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:51:33,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582188254] [2022-11-21 16:51:33,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:51:33,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:51:33,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:51:33,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:51:33,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:51:33,209 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:51:33,210 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 471 transitions, 6615 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:33,210 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:51:33,210 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:51:33,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:51:35,086 INFO L130 PetriNetUnfolder]: 465/1301 cut-off events. [2022-11-21 16:51:35,086 INFO L131 PetriNetUnfolder]: For 25037/25037 co-relation queries the response was YES. [2022-11-21 16:51:35,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10601 conditions, 1301 events. 465/1301 cut-off events. For 25037/25037 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 7944 event pairs, 49 based on Foata normal form. 1/1299 useless extension candidates. Maximal degree in co-relation 10460. Up to 915 conditions per place. [2022-11-21 16:51:35,103 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 398 selfloop transitions, 110 changer transitions 21/568 dead transitions. [2022-11-21 16:51:35,103 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 568 transitions, 9368 flow [2022-11-21 16:51:35,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-21 16:51:35,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-11-21 16:51:35,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 2128 transitions. [2022-11-21 16:51:35,106 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5659574468085107 [2022-11-21 16:51:35,106 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 2128 transitions. [2022-11-21 16:51:35,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 2128 transitions. [2022-11-21 16:51:35,106 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:51:35,106 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 2128 transitions. [2022-11-21 16:51:35,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 53.2) internal successors, (2128), 40 states have internal predecessors, (2128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:35,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 94.0) internal successors, (3854), 41 states have internal predecessors, (3854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:35,109 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 94.0) internal successors, (3854), 41 states have internal predecessors, (3854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:35,109 INFO L175 Difference]: Start difference. First operand has 396 places, 471 transitions, 6615 flow. Second operand 40 states and 2128 transitions. [2022-11-21 16:51:35,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 568 transitions, 9368 flow [2022-11-21 16:51:35,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 568 transitions, 8366 flow, removed 434 selfloop flow, removed 22 redundant places. [2022-11-21 16:51:35,259 INFO L231 Difference]: Finished difference. Result has 416 places, 525 transitions, 7065 flow [2022-11-21 16:51:35,259 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=5649, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=7065, PETRI_PLACES=416, PETRI_TRANSITIONS=525} [2022-11-21 16:51:35,259 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 328 predicate places. [2022-11-21 16:51:35,259 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 525 transitions, 7065 flow [2022-11-21 16:51:35,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:35,259 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:51:35,260 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:51:35,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2022-11-21 16:51:35,260 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:51:35,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:51:35,260 INFO L85 PathProgramCache]: Analyzing trace with hash -865237668, now seen corresponding path program 147 times [2022-11-21 16:51:35,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:51:35,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492709538] [2022-11-21 16:51:35,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:51:35,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:51:35,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:51:35,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:51:35,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:51:35,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492709538] [2022-11-21 16:51:35,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492709538] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:51:35,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:51:35,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:51:35,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881406556] [2022-11-21 16:51:35,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:51:35,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:51:35,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:51:35,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:51:35,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:51:35,735 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:51:35,736 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 525 transitions, 7065 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:35,736 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:51:35,736 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:51:35,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:51:37,677 INFO L130 PetriNetUnfolder]: 470/1318 cut-off events. [2022-11-21 16:51:37,678 INFO L131 PetriNetUnfolder]: For 26049/26049 co-relation queries the response was YES. [2022-11-21 16:51:37,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10593 conditions, 1318 events. 470/1318 cut-off events. For 26049/26049 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 8221 event pairs, 60 based on Foata normal form. 1/1316 useless extension candidates. Maximal degree in co-relation 10447. Up to 845 conditions per place. [2022-11-21 16:51:37,696 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 369 selfloop transitions, 146 changer transitions 34/588 dead transitions. [2022-11-21 16:51:37,696 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 588 transitions, 9071 flow [2022-11-21 16:51:37,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-21 16:51:37,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-11-21 16:51:37,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 2122 transitions. [2022-11-21 16:51:37,699 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5643617021276596 [2022-11-21 16:51:37,699 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 2122 transitions. [2022-11-21 16:51:37,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 2122 transitions. [2022-11-21 16:51:37,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:51:37,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 2122 transitions. [2022-11-21 16:51:37,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 53.05) internal successors, (2122), 40 states have internal predecessors, (2122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:37,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 94.0) internal successors, (3854), 41 states have internal predecessors, (3854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:37,703 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 94.0) internal successors, (3854), 41 states have internal predecessors, (3854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:37,703 INFO L175 Difference]: Start difference. First operand has 416 places, 525 transitions, 7065 flow. Second operand 40 states and 2122 transitions. [2022-11-21 16:51:37,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 588 transitions, 9071 flow [2022-11-21 16:51:37,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 588 transitions, 8141 flow, removed 440 selfloop flow, removed 13 redundant places. [2022-11-21 16:51:37,873 INFO L231 Difference]: Finished difference. Result has 446 places, 528 transitions, 6562 flow [2022-11-21 16:51:37,873 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=6139, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=6562, PETRI_PLACES=446, PETRI_TRANSITIONS=528} [2022-11-21 16:51:37,874 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 358 predicate places. [2022-11-21 16:51:37,874 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 528 transitions, 6562 flow [2022-11-21 16:51:37,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:37,874 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:51:37,874 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:51:37,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2022-11-21 16:51:37,875 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:51:37,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:51:37,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1849103222, now seen corresponding path program 148 times [2022-11-21 16:51:37,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:51:37,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532648062] [2022-11-21 16:51:37,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:51:37,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:51:37,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:51:38,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:51:38,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:51:38,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532648062] [2022-11-21 16:51:38,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532648062] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:51:38,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:51:38,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:51:38,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214238689] [2022-11-21 16:51:38,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:51:38,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:51:38,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:51:38,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:51:38,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:51:38,433 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:51:38,434 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 528 transitions, 6562 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:38,434 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:51:38,434 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:51:38,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:51:40,356 INFO L130 PetriNetUnfolder]: 506/1429 cut-off events. [2022-11-21 16:51:40,357 INFO L131 PetriNetUnfolder]: For 30041/30041 co-relation queries the response was YES. [2022-11-21 16:51:40,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11328 conditions, 1429 events. 506/1429 cut-off events. For 30041/30041 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 9130 event pairs, 54 based on Foata normal form. 1/1427 useless extension candidates. Maximal degree in co-relation 11175. Up to 985 conditions per place. [2022-11-21 16:51:40,377 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 445 selfloop transitions, 133 changer transitions 21/638 dead transitions. [2022-11-21 16:51:40,377 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 638 transitions, 9595 flow [2022-11-21 16:51:40,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-21 16:51:40,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-21 16:51:40,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1974 transitions. [2022-11-21 16:51:40,380 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5675675675675675 [2022-11-21 16:51:40,380 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1974 transitions. [2022-11-21 16:51:40,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1974 transitions. [2022-11-21 16:51:40,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:51:40,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1974 transitions. [2022-11-21 16:51:40,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 53.351351351351354) internal successors, (1974), 37 states have internal predecessors, (1974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:40,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:40,383 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:40,384 INFO L175 Difference]: Start difference. First operand has 446 places, 528 transitions, 6562 flow. Second operand 37 states and 1974 transitions. [2022-11-21 16:51:40,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 638 transitions, 9595 flow [2022-11-21 16:51:40,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 638 transitions, 9245 flow, removed 76 selfloop flow, removed 35 redundant places. [2022-11-21 16:51:40,573 INFO L231 Difference]: Finished difference. Result has 457 places, 589 transitions, 7835 flow [2022-11-21 16:51:40,574 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=6270, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=7835, PETRI_PLACES=457, PETRI_TRANSITIONS=589} [2022-11-21 16:51:40,574 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 369 predicate places. [2022-11-21 16:51:40,574 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 589 transitions, 7835 flow [2022-11-21 16:51:40,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:40,574 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:51:40,574 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:51:40,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2022-11-21 16:51:40,575 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:51:40,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:51:40,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1241357250, now seen corresponding path program 149 times [2022-11-21 16:51:40,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:51:40,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871305371] [2022-11-21 16:51:40,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:51:40,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:51:40,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:51:41,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:51:41,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:51:41,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871305371] [2022-11-21 16:51:41,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871305371] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:51:41,026 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:51:41,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-21 16:51:41,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428527691] [2022-11-21 16:51:41,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:51:41,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-21 16:51:41,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:51:41,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-21 16:51:41,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2022-11-21 16:51:41,027 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:51:41,027 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 589 transitions, 7835 flow. Second operand has 17 states, 17 states have (on average 51.35294117647059) internal successors, (873), 17 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:41,028 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:51:41,028 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:51:41,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:51:42,719 INFO L130 PetriNetUnfolder]: 511/1456 cut-off events. [2022-11-21 16:51:42,719 INFO L131 PetriNetUnfolder]: For 32978/32978 co-relation queries the response was YES. [2022-11-21 16:51:42,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11850 conditions, 1456 events. 511/1456 cut-off events. For 32978/32978 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 9441 event pairs, 60 based on Foata normal form. 1/1454 useless extension candidates. Maximal degree in co-relation 11687. Up to 1043 conditions per place. [2022-11-21 16:51:42,748 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 482 selfloop transitions, 92 changer transitions 29/642 dead transitions. [2022-11-21 16:51:42,748 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 642 transitions, 9872 flow [2022-11-21 16:51:42,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-21 16:51:42,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-11-21 16:51:42,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 1514 transitions. [2022-11-21 16:51:42,750 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5752279635258358 [2022-11-21 16:51:42,750 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 1514 transitions. [2022-11-21 16:51:42,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 1514 transitions. [2022-11-21 16:51:42,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:51:42,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 1514 transitions. [2022-11-21 16:51:42,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 54.07142857142857) internal successors, (1514), 28 states have internal predecessors, (1514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:42,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 94.0) internal successors, (2726), 29 states have internal predecessors, (2726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:42,753 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 94.0) internal successors, (2726), 29 states have internal predecessors, (2726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:42,753 INFO L175 Difference]: Start difference. First operand has 457 places, 589 transitions, 7835 flow. Second operand 28 states and 1514 transitions. [2022-11-21 16:51:42,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 642 transitions, 9872 flow [2022-11-21 16:51:42,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 463 places, 642 transitions, 9183 flow, removed 306 selfloop flow, removed 15 redundant places. [2022-11-21 16:51:42,988 INFO L231 Difference]: Finished difference. Result has 473 places, 594 transitions, 7590 flow [2022-11-21 16:51:42,988 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=7206, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=589, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=501, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=7590, PETRI_PLACES=473, PETRI_TRANSITIONS=594} [2022-11-21 16:51:42,989 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 385 predicate places. [2022-11-21 16:51:42,989 INFO L495 AbstractCegarLoop]: Abstraction has has 473 places, 594 transitions, 7590 flow [2022-11-21 16:51:42,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 51.35294117647059) internal successors, (873), 17 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:42,989 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:51:42,989 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:51:42,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2022-11-21 16:51:42,990 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:51:42,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:51:42,990 INFO L85 PathProgramCache]: Analyzing trace with hash -963427796, now seen corresponding path program 150 times [2022-11-21 16:51:42,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:51:42,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610899384] [2022-11-21 16:51:42,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:51:42,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:51:43,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:51:43,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:51:43,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:51:43,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610899384] [2022-11-21 16:51:43,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610899384] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:51:43,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:51:43,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-21 16:51:43,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682639658] [2022-11-21 16:51:43,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:51:43,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-21 16:51:43,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:51:43,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-21 16:51:43,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-11-21 16:51:43,419 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:51:43,420 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 594 transitions, 7590 flow. Second operand has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:43,420 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:51:43,420 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:51:43,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:51:45,214 INFO L130 PetriNetUnfolder]: 515/1484 cut-off events. [2022-11-21 16:51:45,214 INFO L131 PetriNetUnfolder]: For 33604/33604 co-relation queries the response was YES. [2022-11-21 16:51:45,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11954 conditions, 1484 events. 515/1484 cut-off events. For 33604/33604 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 9682 event pairs, 60 based on Foata normal form. 1/1482 useless extension candidates. Maximal degree in co-relation 11784. Up to 1050 conditions per place. [2022-11-21 16:51:45,237 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 485 selfloop transitions, 103 changer transitions 29/656 dead transitions. [2022-11-21 16:51:45,238 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 656 transitions, 9955 flow [2022-11-21 16:51:45,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-21 16:51:45,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-21 16:51:45,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1717 transitions. [2022-11-21 16:51:45,240 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.570811170212766 [2022-11-21 16:51:45,240 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1717 transitions. [2022-11-21 16:51:45,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1717 transitions. [2022-11-21 16:51:45,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:51:45,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1717 transitions. [2022-11-21 16:51:45,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 53.65625) internal successors, (1717), 32 states have internal predecessors, (1717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:45,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:45,243 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:45,243 INFO L175 Difference]: Start difference. First operand has 473 places, 594 transitions, 7590 flow. Second operand 32 states and 1717 transitions. [2022-11-21 16:51:45,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 656 transitions, 9955 flow [2022-11-21 16:51:45,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 656 transitions, 9572 flow, removed 143 selfloop flow, removed 21 redundant places. [2022-11-21 16:51:45,513 INFO L231 Difference]: Finished difference. Result has 486 places, 607 transitions, 7926 flow [2022-11-21 16:51:45,514 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=7355, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=594, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=497, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=7926, PETRI_PLACES=486, PETRI_TRANSITIONS=607} [2022-11-21 16:51:45,514 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 398 predicate places. [2022-11-21 16:51:45,515 INFO L495 AbstractCegarLoop]: Abstraction has has 486 places, 607 transitions, 7926 flow [2022-11-21 16:51:45,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:45,515 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:51:45,515 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:51:45,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2022-11-21 16:51:45,516 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:51:45,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:51:45,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1575504402, now seen corresponding path program 151 times [2022-11-21 16:51:45,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:51:45,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493381401] [2022-11-21 16:51:45,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:51:45,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:51:45,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:51:46,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:51:46,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:51:46,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493381401] [2022-11-21 16:51:46,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493381401] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:51:46,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:51:46,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:51:46,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160268932] [2022-11-21 16:51:46,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:51:46,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:51:46,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:51:46,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:51:46,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:51:46,165 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:51:46,166 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 607 transitions, 7926 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:46,166 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:51:46,166 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:51:46,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:51:48,530 INFO L130 PetriNetUnfolder]: 550/1579 cut-off events. [2022-11-21 16:51:48,531 INFO L131 PetriNetUnfolder]: For 39355/39355 co-relation queries the response was YES. [2022-11-21 16:51:48,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12991 conditions, 1579 events. 550/1579 cut-off events. For 39355/39355 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 10501 event pairs, 48 based on Foata normal form. 1/1577 useless extension candidates. Maximal degree in co-relation 12817. Up to 871 conditions per place. [2022-11-21 16:51:48,559 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 344 selfloop transitions, 307 changer transitions 23/713 dead transitions. [2022-11-21 16:51:48,559 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 525 places, 713 transitions, 11307 flow [2022-11-21 16:51:48,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-21 16:51:48,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2022-11-21 16:51:48,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 2483 transitions. [2022-11-21 16:51:48,562 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5620190131281123 [2022-11-21 16:51:48,562 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 2483 transitions. [2022-11-21 16:51:48,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 2483 transitions. [2022-11-21 16:51:48,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:51:48,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 2483 transitions. [2022-11-21 16:51:48,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 52.829787234042556) internal successors, (2483), 47 states have internal predecessors, (2483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:48,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 94.0) internal successors, (4512), 48 states have internal predecessors, (4512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:48,567 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 94.0) internal successors, (4512), 48 states have internal predecessors, (4512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:48,567 INFO L175 Difference]: Start difference. First operand has 486 places, 607 transitions, 7926 flow. Second operand 47 states and 2483 transitions. [2022-11-21 16:51:48,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 525 places, 713 transitions, 11307 flow [2022-11-21 16:51:48,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 713 transitions, 10921 flow, removed 121 selfloop flow, removed 26 redundant places. [2022-11-21 16:51:48,891 INFO L231 Difference]: Finished difference. Result has 512 places, 661 transitions, 9695 flow [2022-11-21 16:51:48,891 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=7612, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=607, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=259, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=9695, PETRI_PLACES=512, PETRI_TRANSITIONS=661} [2022-11-21 16:51:48,891 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 424 predicate places. [2022-11-21 16:51:48,891 INFO L495 AbstractCegarLoop]: Abstraction has has 512 places, 661 transitions, 9695 flow [2022-11-21 16:51:48,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:48,891 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:51:48,892 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:51:48,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2022-11-21 16:51:48,892 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:51:48,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:51:48,892 INFO L85 PathProgramCache]: Analyzing trace with hash 324654396, now seen corresponding path program 152 times [2022-11-21 16:51:48,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:51:48,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316375036] [2022-11-21 16:51:48,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:51:48,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:51:48,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:51:49,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:51:49,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:51:49,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316375036] [2022-11-21 16:51:49,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316375036] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:51:49,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:51:49,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:51:49,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605372899] [2022-11-21 16:51:49,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:51:49,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:51:49,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:51:49,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:51:49,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:51:49,355 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:51:49,355 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 512 places, 661 transitions, 9695 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:49,355 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:51:49,356 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:51:49,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:51:51,537 INFO L130 PetriNetUnfolder]: 555/1593 cut-off events. [2022-11-21 16:51:51,537 INFO L131 PetriNetUnfolder]: For 44086/44086 co-relation queries the response was YES. [2022-11-21 16:51:51,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13839 conditions, 1593 events. 555/1593 cut-off events. For 44086/44086 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 10646 event pairs, 65 based on Foata normal form. 1/1591 useless extension candidates. Maximal degree in co-relation 13659. Up to 1146 conditions per place. [2022-11-21 16:51:51,561 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 543 selfloop transitions, 95 changer transitions 35/712 dead transitions. [2022-11-21 16:51:51,561 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 539 places, 712 transitions, 11776 flow [2022-11-21 16:51:51,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-21 16:51:51,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-21 16:51:51,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1814 transitions. [2022-11-21 16:51:51,564 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.567584480600751 [2022-11-21 16:51:51,564 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1814 transitions. [2022-11-21 16:51:51,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1814 transitions. [2022-11-21 16:51:51,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:51:51,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1814 transitions. [2022-11-21 16:51:51,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.35294117647059) internal successors, (1814), 34 states have internal predecessors, (1814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:51,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:51,567 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:51,567 INFO L175 Difference]: Start difference. First operand has 512 places, 661 transitions, 9695 flow. Second operand 34 states and 1814 transitions. [2022-11-21 16:51:51,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 539 places, 712 transitions, 11776 flow [2022-11-21 16:51:51,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 712 transitions, 11077 flow, removed 270 selfloop flow, removed 28 redundant places. [2022-11-21 16:51:51,881 INFO L231 Difference]: Finished difference. Result has 525 places, 661 transitions, 9283 flow [2022-11-21 16:51:51,881 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=9008, PETRI_DIFFERENCE_MINUEND_PLACES=478, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=661, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=567, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=9283, PETRI_PLACES=525, PETRI_TRANSITIONS=661} [2022-11-21 16:51:51,882 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 437 predicate places. [2022-11-21 16:51:51,882 INFO L495 AbstractCegarLoop]: Abstraction has has 525 places, 661 transitions, 9283 flow [2022-11-21 16:51:51,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:51,882 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:51:51,882 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:51:51,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2022-11-21 16:51:51,882 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:51:51,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:51:51,883 INFO L85 PathProgramCache]: Analyzing trace with hash 832460752, now seen corresponding path program 153 times [2022-11-21 16:51:51,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:51:51,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265526928] [2022-11-21 16:51:51,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:51:51,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:51:51,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:51:52,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:51:52,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:51:52,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265526928] [2022-11-21 16:51:52,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265526928] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:51:52,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:51:52,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-21 16:51:52,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932998456] [2022-11-21 16:51:52,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:51:52,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-21 16:51:52,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:51:52,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-21 16:51:52,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-11-21 16:51:52,316 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:51:52,317 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 525 places, 661 transitions, 9283 flow. Second operand has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:52,317 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:51:52,317 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:51:52,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:51:54,469 INFO L130 PetriNetUnfolder]: 581/1656 cut-off events. [2022-11-21 16:51:54,469 INFO L131 PetriNetUnfolder]: For 44913/44913 co-relation queries the response was YES. [2022-11-21 16:51:54,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14314 conditions, 1656 events. 581/1656 cut-off events. For 44913/44913 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 11201 event pairs, 49 based on Foata normal form. 1/1654 useless extension candidates. Maximal degree in co-relation 14124. Up to 1144 conditions per place. [2022-11-21 16:51:54,501 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 544 selfloop transitions, 145 changer transitions 32/760 dead transitions. [2022-11-21 16:51:54,501 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 549 places, 760 transitions, 12455 flow [2022-11-21 16:51:54,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-21 16:51:54,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-21 16:51:54,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1872 transitions. [2022-11-21 16:51:54,504 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5689969604863222 [2022-11-21 16:51:54,504 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1872 transitions. [2022-11-21 16:51:54,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1872 transitions. [2022-11-21 16:51:54,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:51:54,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1872 transitions. [2022-11-21 16:51:54,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 53.48571428571429) internal successors, (1872), 35 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:54,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:54,508 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:54,508 INFO L175 Difference]: Start difference. First operand has 525 places, 661 transitions, 9283 flow. Second operand 35 states and 1872 transitions. [2022-11-21 16:51:54,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 549 places, 760 transitions, 12455 flow [2022-11-21 16:51:54,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 515 places, 760 transitions, 12096 flow, removed 51 selfloop flow, removed 34 redundant places. [2022-11-21 16:51:54,862 INFO L231 Difference]: Finished difference. Result has 533 places, 702 transitions, 10208 flow [2022-11-21 16:51:54,863 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8993, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=661, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=528, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=10208, PETRI_PLACES=533, PETRI_TRANSITIONS=702} [2022-11-21 16:51:54,863 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 445 predicate places. [2022-11-21 16:51:54,863 INFO L495 AbstractCegarLoop]: Abstraction has has 533 places, 702 transitions, 10208 flow [2022-11-21 16:51:54,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:54,863 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:51:54,863 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:51:54,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2022-11-21 16:51:54,864 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:51:54,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:51:54,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1717560350, now seen corresponding path program 154 times [2022-11-21 16:51:54,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:51:54,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502149631] [2022-11-21 16:51:54,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:51:54,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:51:54,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:51:55,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:51:55,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:51:55,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502149631] [2022-11-21 16:51:55,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502149631] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:51:55,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:51:55,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:51:55,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322891707] [2022-11-21 16:51:55,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:51:55,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:51:55,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:51:55,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:51:55,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:51:55,371 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:51:55,372 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 533 places, 702 transitions, 10208 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:55,372 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:51:55,372 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:51:55,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:51:57,596 INFO L130 PetriNetUnfolder]: 580/1668 cut-off events. [2022-11-21 16:51:57,596 INFO L131 PetriNetUnfolder]: For 45915/45915 co-relation queries the response was YES. [2022-11-21 16:51:57,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14509 conditions, 1668 events. 580/1668 cut-off events. For 45915/45915 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 11355 event pairs, 61 based on Foata normal form. 1/1666 useless extension candidates. Maximal degree in co-relation 14315. Up to 1204 conditions per place. [2022-11-21 16:51:57,626 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 574 selfloop transitions, 110 changer transitions 33/756 dead transitions. [2022-11-21 16:51:57,626 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 561 places, 756 transitions, 12613 flow [2022-11-21 16:51:57,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-21 16:51:57,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-21 16:51:57,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1907 transitions. [2022-11-21 16:51:57,629 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5635342789598109 [2022-11-21 16:51:57,629 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1907 transitions. [2022-11-21 16:51:57,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1907 transitions. [2022-11-21 16:51:57,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:51:57,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1907 transitions. [2022-11-21 16:51:57,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 52.97222222222222) internal successors, (1907), 36 states have internal predecessors, (1907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:57,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:57,633 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:57,633 INFO L175 Difference]: Start difference. First operand has 533 places, 702 transitions, 10208 flow. Second operand 36 states and 1907 transitions. [2022-11-21 16:51:57,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 561 places, 756 transitions, 12613 flow [2022-11-21 16:51:58,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 544 places, 756 transitions, 12331 flow, removed 113 selfloop flow, removed 17 redundant places. [2022-11-21 16:51:58,016 INFO L231 Difference]: Finished difference. Result has 557 places, 705 transitions, 10417 flow [2022-11-21 16:51:58,016 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=9960, PETRI_DIFFERENCE_MINUEND_PLACES=509, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=702, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=593, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=10417, PETRI_PLACES=557, PETRI_TRANSITIONS=705} [2022-11-21 16:51:58,017 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 469 predicate places. [2022-11-21 16:51:58,017 INFO L495 AbstractCegarLoop]: Abstraction has has 557 places, 705 transitions, 10417 flow [2022-11-21 16:51:58,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:58,017 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:51:58,017 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:51:58,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2022-11-21 16:51:58,017 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:51:58,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:51:58,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1883005044, now seen corresponding path program 155 times [2022-11-21 16:51:58,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:51:58,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768575540] [2022-11-21 16:51:58,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:51:58,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:51:58,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:51:58,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:51:58,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:51:58,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768575540] [2022-11-21 16:51:58,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768575540] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:51:58,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:51:58,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:51:58,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893526658] [2022-11-21 16:51:58,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:51:58,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:51:58,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:51:58,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:51:58,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:51:58,536 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:51:58,537 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 557 places, 705 transitions, 10417 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:58,537 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:51:58,537 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:51:58,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:52:00,972 INFO L130 PetriNetUnfolder]: 581/1665 cut-off events. [2022-11-21 16:52:00,972 INFO L131 PetriNetUnfolder]: For 44635/44635 co-relation queries the response was YES. [2022-11-21 16:52:00,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14575 conditions, 1665 events. 581/1665 cut-off events. For 44635/44635 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 11322 event pairs, 57 based on Foata normal form. 1/1663 useless extension candidates. Maximal degree in co-relation 14373. Up to 1155 conditions per place. [2022-11-21 16:52:01,004 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 547 selfloop transitions, 142 changer transitions 37/765 dead transitions. [2022-11-21 16:52:01,004 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 583 places, 765 transitions, 12855 flow [2022-11-21 16:52:01,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-21 16:52:01,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-21 16:52:01,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2021 transitions. [2022-11-21 16:52:01,007 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5657894736842105 [2022-11-21 16:52:01,007 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2021 transitions. [2022-11-21 16:52:01,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2021 transitions. [2022-11-21 16:52:01,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:52:01,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2021 transitions. [2022-11-21 16:52:01,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 53.18421052631579) internal successors, (2021), 38 states have internal predecessors, (2021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:01,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:01,013 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:01,013 INFO L175 Difference]: Start difference. First operand has 557 places, 705 transitions, 10417 flow. Second operand 38 states and 2021 transitions. [2022-11-21 16:52:01,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 583 places, 765 transitions, 12855 flow [2022-11-21 16:52:01,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 552 places, 765 transitions, 12504 flow, removed 77 selfloop flow, removed 31 redundant places. [2022-11-21 16:52:01,394 INFO L231 Difference]: Finished difference. Result has 567 places, 709 transitions, 10604 flow [2022-11-21 16:52:01,395 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=10122, PETRI_DIFFERENCE_MINUEND_PLACES=515, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=705, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=567, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=10604, PETRI_PLACES=567, PETRI_TRANSITIONS=709} [2022-11-21 16:52:01,395 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 479 predicate places. [2022-11-21 16:52:01,395 INFO L495 AbstractCegarLoop]: Abstraction has has 567 places, 709 transitions, 10604 flow [2022-11-21 16:52:01,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:01,395 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:52:01,396 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:52:01,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2022-11-21 16:52:01,396 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:52:01,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:52:01,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1794060984, now seen corresponding path program 156 times [2022-11-21 16:52:01,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:52:01,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137581728] [2022-11-21 16:52:01,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:52:01,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:52:01,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:52:01,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:52:01,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:52:01,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137581728] [2022-11-21 16:52:01,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137581728] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:52:01,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:52:01,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:52:01,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887104756] [2022-11-21 16:52:01,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:52:01,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:52:01,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:52:01,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:52:01,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:52:01,904 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:52:01,904 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 567 places, 709 transitions, 10604 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:01,904 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:52:01,904 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:52:01,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:52:04,414 INFO L130 PetriNetUnfolder]: 587/1695 cut-off events. [2022-11-21 16:52:04,414 INFO L131 PetriNetUnfolder]: For 45367/45367 co-relation queries the response was YES. [2022-11-21 16:52:04,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14892 conditions, 1695 events. 587/1695 cut-off events. For 45367/45367 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 11632 event pairs, 38 based on Foata normal form. 1/1693 useless extension candidates. Maximal degree in co-relation 14685. Up to 1047 conditions per place. [2022-11-21 16:52:04,445 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 469 selfloop transitions, 244 changer transitions 32/784 dead transitions. [2022-11-21 16:52:04,445 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 598 places, 784 transitions, 13541 flow [2022-11-21 16:52:04,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-21 16:52:04,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2022-11-21 16:52:04,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 2225 transitions. [2022-11-21 16:52:04,448 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5635764944275583 [2022-11-21 16:52:04,448 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 2225 transitions. [2022-11-21 16:52:04,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 2225 transitions. [2022-11-21 16:52:04,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:52:04,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 2225 transitions. [2022-11-21 16:52:04,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 52.976190476190474) internal successors, (2225), 42 states have internal predecessors, (2225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:04,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 94.0) internal successors, (4042), 43 states have internal predecessors, (4042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:04,453 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 94.0) internal successors, (4042), 43 states have internal predecessors, (4042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:04,453 INFO L175 Difference]: Start difference. First operand has 567 places, 709 transitions, 10604 flow. Second operand 42 states and 2225 transitions. [2022-11-21 16:52:04,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 598 places, 784 transitions, 13541 flow [2022-11-21 16:52:04,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 563 places, 784 transitions, 13124 flow, removed 52 selfloop flow, removed 35 redundant places. [2022-11-21 16:52:04,827 INFO L231 Difference]: Finished difference. Result has 574 places, 729 transitions, 11368 flow [2022-11-21 16:52:04,827 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=10233, PETRI_DIFFERENCE_MINUEND_PLACES=522, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=709, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=226, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=477, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=11368, PETRI_PLACES=574, PETRI_TRANSITIONS=729} [2022-11-21 16:52:04,828 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 486 predicate places. [2022-11-21 16:52:04,828 INFO L495 AbstractCegarLoop]: Abstraction has has 574 places, 729 transitions, 11368 flow [2022-11-21 16:52:04,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:04,828 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:52:04,828 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:52:04,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2022-11-21 16:52:04,829 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:52:04,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:52:04,829 INFO L85 PathProgramCache]: Analyzing trace with hash -51062402, now seen corresponding path program 157 times [2022-11-21 16:52:04,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:52:04,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567368843] [2022-11-21 16:52:04,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:52:04,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:52:04,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:52:05,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:52:05,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:52:05,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567368843] [2022-11-21 16:52:05,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567368843] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:52:05,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:52:05,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:52:05,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136668350] [2022-11-21 16:52:05,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:52:05,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:52:05,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:52:05,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:52:05,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:52:05,497 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:52:05,498 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 574 places, 729 transitions, 11368 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:05,498 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:52:05,498 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:52:05,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:52:08,089 INFO L130 PetriNetUnfolder]: 586/1703 cut-off events. [2022-11-21 16:52:08,089 INFO L131 PetriNetUnfolder]: For 46486/46486 co-relation queries the response was YES. [2022-11-21 16:52:08,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15160 conditions, 1703 events. 586/1703 cut-off events. For 46486/46486 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 11780 event pairs, 39 based on Foata normal form. 1/1701 useless extension candidates. Maximal degree in co-relation 14955. Up to 1065 conditions per place. [2022-11-21 16:52:08,122 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 472 selfloop transitions, 236 changer transitions 37/784 dead transitions. [2022-11-21 16:52:08,122 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 611 places, 784 transitions, 13759 flow [2022-11-21 16:52:08,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-21 16:52:08,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-11-21 16:52:08,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 2374 transitions. [2022-11-21 16:52:08,125 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5612293144208038 [2022-11-21 16:52:08,125 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 2374 transitions. [2022-11-21 16:52:08,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 2374 transitions. [2022-11-21 16:52:08,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:52:08,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 2374 transitions. [2022-11-21 16:52:08,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 52.75555555555555) internal successors, (2374), 45 states have internal predecessors, (2374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:08,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 94.0) internal successors, (4324), 46 states have internal predecessors, (4324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:08,134 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 94.0) internal successors, (4324), 46 states have internal predecessors, (4324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:08,134 INFO L175 Difference]: Start difference. First operand has 574 places, 729 transitions, 11368 flow. Second operand 45 states and 2374 transitions. [2022-11-21 16:52:08,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 611 places, 784 transitions, 13759 flow [2022-11-21 16:52:08,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 575 places, 784 transitions, 13244 flow, removed 134 selfloop flow, removed 36 redundant places. [2022-11-21 16:52:08,635 INFO L231 Difference]: Finished difference. Result has 590 places, 733 transitions, 11642 flow [2022-11-21 16:52:08,635 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=10910, PETRI_DIFFERENCE_MINUEND_PLACES=531, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=729, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=230, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=497, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=11642, PETRI_PLACES=590, PETRI_TRANSITIONS=733} [2022-11-21 16:52:08,636 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 502 predicate places. [2022-11-21 16:52:08,636 INFO L495 AbstractCegarLoop]: Abstraction has has 590 places, 733 transitions, 11642 flow [2022-11-21 16:52:08,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:08,636 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:52:08,636 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:52:08,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2022-11-21 16:52:08,636 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:52:08,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:52:08,637 INFO L85 PathProgramCache]: Analyzing trace with hash 48180748, now seen corresponding path program 158 times [2022-11-21 16:52:08,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:52:08,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437488569] [2022-11-21 16:52:08,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:52:08,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:52:08,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:52:09,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:52:09,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:52:09,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437488569] [2022-11-21 16:52:09,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437488569] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:52:09,087 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:52:09,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:52:09,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295382484] [2022-11-21 16:52:09,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:52:09,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:52:09,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:52:09,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:52:09,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:52:09,089 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:52:09,090 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 590 places, 733 transitions, 11642 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:09,090 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:52:09,090 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:52:09,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:52:11,369 INFO L130 PetriNetUnfolder]: 591/1684 cut-off events. [2022-11-21 16:52:11,369 INFO L131 PetriNetUnfolder]: For 44808/44808 co-relation queries the response was YES. [2022-11-21 16:52:11,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15468 conditions, 1684 events. 591/1684 cut-off events. For 44808/44808 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 11576 event pairs, 58 based on Foata normal form. 1/1681 useless extension candidates. Maximal degree in co-relation 15255. Up to 1226 conditions per place. [2022-11-21 16:52:11,404 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 584 selfloop transitions, 142 changer transitions 32/797 dead transitions. [2022-11-21 16:52:11,404 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 617 places, 797 transitions, 14519 flow [2022-11-21 16:52:11,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-21 16:52:11,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-21 16:52:11,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2013 transitions. [2022-11-21 16:52:11,407 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5635498320268757 [2022-11-21 16:52:11,407 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2013 transitions. [2022-11-21 16:52:11,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2013 transitions. [2022-11-21 16:52:11,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:52:11,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2013 transitions. [2022-11-21 16:52:11,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 52.973684210526315) internal successors, (2013), 38 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:11,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:11,411 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:11,411 INFO L175 Difference]: Start difference. First operand has 590 places, 733 transitions, 11642 flow. Second operand 38 states and 2013 transitions. [2022-11-21 16:52:11,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 617 places, 797 transitions, 14519 flow [2022-11-21 16:52:11,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 574 places, 797 transitions, 13834 flow, removed 63 selfloop flow, removed 43 redundant places. [2022-11-21 16:52:11,847 INFO L231 Difference]: Finished difference. Result has 588 places, 749 transitions, 11884 flow [2022-11-21 16:52:11,847 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=11045, PETRI_DIFFERENCE_MINUEND_PLACES=537, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=733, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=595, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=11884, PETRI_PLACES=588, PETRI_TRANSITIONS=749} [2022-11-21 16:52:11,847 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 500 predicate places. [2022-11-21 16:52:11,848 INFO L495 AbstractCegarLoop]: Abstraction has has 588 places, 749 transitions, 11884 flow [2022-11-21 16:52:11,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:11,848 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:52:11,848 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:52:11,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2022-11-21 16:52:11,848 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:52:11,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:52:11,848 INFO L85 PathProgramCache]: Analyzing trace with hash -47759764, now seen corresponding path program 159 times [2022-11-21 16:52:11,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:52:11,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013357261] [2022-11-21 16:52:11,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:52:11,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:52:11,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:52:12,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:52:12,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:52:12,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013357261] [2022-11-21 16:52:12,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013357261] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:52:12,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:52:12,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-21 16:52:12,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072302233] [2022-11-21 16:52:12,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:52:12,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-21 16:52:12,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:52:12,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-21 16:52:12,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-11-21 16:52:12,301 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:52:12,302 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 588 places, 749 transitions, 11884 flow. Second operand has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:12,302 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:52:12,302 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:52:12,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:52:14,233 INFO L130 PetriNetUnfolder]: 587/1707 cut-off events. [2022-11-21 16:52:14,233 INFO L131 PetriNetUnfolder]: For 44607/44607 co-relation queries the response was YES. [2022-11-21 16:52:14,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15317 conditions, 1707 events. 587/1707 cut-off events. For 44607/44607 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 11854 event pairs, 56 based on Foata normal form. 1/1705 useless extension candidates. Maximal degree in co-relation 15103. Up to 1268 conditions per place. [2022-11-21 16:52:14,268 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 631 selfloop transitions, 89 changer transitions 35/794 dead transitions. [2022-11-21 16:52:14,268 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 609 places, 794 transitions, 14174 flow [2022-11-21 16:52:14,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-21 16:52:14,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-21 16:52:14,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1607 transitions. [2022-11-21 16:52:14,271 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5698581560283688 [2022-11-21 16:52:14,271 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1607 transitions. [2022-11-21 16:52:14,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1607 transitions. [2022-11-21 16:52:14,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:52:14,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1607 transitions. [2022-11-21 16:52:14,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 53.56666666666667) internal successors, (1607), 30 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:14,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:14,275 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:14,275 INFO L175 Difference]: Start difference. First operand has 588 places, 749 transitions, 11884 flow. Second operand 30 states and 1607 transitions. [2022-11-21 16:52:14,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 609 places, 794 transitions, 14174 flow [2022-11-21 16:52:14,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 580 places, 794 transitions, 13655 flow, removed 182 selfloop flow, removed 29 redundant places. [2022-11-21 16:52:14,683 INFO L231 Difference]: Finished difference. Result has 591 places, 745 transitions, 11713 flow [2022-11-21 16:52:14,684 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=11515, PETRI_DIFFERENCE_MINUEND_PLACES=551, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=749, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=660, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=11713, PETRI_PLACES=591, PETRI_TRANSITIONS=745} [2022-11-21 16:52:14,684 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 503 predicate places. [2022-11-21 16:52:14,685 INFO L495 AbstractCegarLoop]: Abstraction has has 591 places, 745 transitions, 11713 flow [2022-11-21 16:52:14,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:14,685 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:52:14,685 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:52:14,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2022-11-21 16:52:14,686 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:52:14,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:52:14,686 INFO L85 PathProgramCache]: Analyzing trace with hash -764338064, now seen corresponding path program 160 times [2022-11-21 16:52:14,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:52:14,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694155081] [2022-11-21 16:52:14,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:52:14,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:52:14,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:52:15,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:52:15,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:52:15,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694155081] [2022-11-21 16:52:15,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694155081] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:52:15,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:52:15,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:52:15,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806073769] [2022-11-21 16:52:15,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:52:15,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:52:15,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:52:15,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:52:15,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:52:15,281 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:52:15,282 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 591 places, 745 transitions, 11713 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:15,282 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:52:15,282 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:52:15,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:52:17,626 INFO L130 PetriNetUnfolder]: 605/1736 cut-off events. [2022-11-21 16:52:17,626 INFO L131 PetriNetUnfolder]: For 47801/47801 co-relation queries the response was YES. [2022-11-21 16:52:17,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15838 conditions, 1736 events. 605/1736 cut-off events. For 47801/47801 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 11996 event pairs, 41 based on Foata normal form. 1/1734 useless extension candidates. Maximal degree in co-relation 15620. Up to 1286 conditions per place. [2022-11-21 16:52:17,658 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 649 selfloop transitions, 113 changer transitions 20/821 dead transitions. [2022-11-21 16:52:17,659 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 612 places, 821 transitions, 14842 flow [2022-11-21 16:52:17,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-21 16:52:17,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-21 16:52:17,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1821 transitions. [2022-11-21 16:52:17,661 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5697747183979975 [2022-11-21 16:52:17,661 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1821 transitions. [2022-11-21 16:52:17,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1821 transitions. [2022-11-21 16:52:17,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:52:17,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1821 transitions. [2022-11-21 16:52:17,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.55882352941177) internal successors, (1821), 34 states have internal predecessors, (1821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:17,665 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:17,665 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:17,665 INFO L175 Difference]: Start difference. First operand has 591 places, 745 transitions, 11713 flow. Second operand 34 states and 1821 transitions. [2022-11-21 16:52:17,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 612 places, 821 transitions, 14842 flow [2022-11-21 16:52:18,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 584 places, 821 transitions, 14518 flow, removed 47 selfloop flow, removed 28 redundant places. [2022-11-21 16:52:18,144 INFO L231 Difference]: Finished difference. Result has 593 places, 775 transitions, 12508 flow [2022-11-21 16:52:18,144 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=11451, PETRI_DIFFERENCE_MINUEND_PLACES=551, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=745, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=651, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=12508, PETRI_PLACES=593, PETRI_TRANSITIONS=775} [2022-11-21 16:52:18,144 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 505 predicate places. [2022-11-21 16:52:18,144 INFO L495 AbstractCegarLoop]: Abstraction has has 593 places, 775 transitions, 12508 flow [2022-11-21 16:52:18,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:18,145 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:52:18,145 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:52:18,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2022-11-21 16:52:18,145 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:52:18,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:52:18,145 INFO L85 PathProgramCache]: Analyzing trace with hash -51073470, now seen corresponding path program 161 times [2022-11-21 16:52:18,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:52:18,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958358143] [2022-11-21 16:52:18,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:52:18,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:52:18,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:52:18,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:52:18,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:52:18,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958358143] [2022-11-21 16:52:18,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958358143] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:52:18,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:52:18,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:52:18,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799665620] [2022-11-21 16:52:18,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:52:18,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:52:18,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:52:18,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:52:18,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:52:18,756 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:52:18,756 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 593 places, 775 transitions, 12508 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:18,757 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:52:18,757 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:52:18,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:52:21,097 INFO L130 PetriNetUnfolder]: 608/1774 cut-off events. [2022-11-21 16:52:21,097 INFO L131 PetriNetUnfolder]: For 50672/50672 co-relation queries the response was YES. [2022-11-21 16:52:21,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16210 conditions, 1774 events. 608/1774 cut-off events. For 50672/50672 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 12500 event pairs, 61 based on Foata normal form. 1/1772 useless extension candidates. Maximal degree in co-relation 15996. Up to 1285 conditions per place. [2022-11-21 16:52:21,127 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 616 selfloop transitions, 126 changer transitions 35/816 dead transitions. [2022-11-21 16:52:21,127 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 621 places, 816 transitions, 14686 flow [2022-11-21 16:52:21,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-21 16:52:21,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-21 16:52:21,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1859 transitions. [2022-11-21 16:52:21,129 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5650455927051672 [2022-11-21 16:52:21,129 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1859 transitions. [2022-11-21 16:52:21,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1859 transitions. [2022-11-21 16:52:21,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:52:21,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1859 transitions. [2022-11-21 16:52:21,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 53.114285714285714) internal successors, (1859), 35 states have internal predecessors, (1859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:21,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:21,134 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:21,134 INFO L175 Difference]: Start difference. First operand has 593 places, 775 transitions, 12508 flow. Second operand 35 states and 1859 transitions. [2022-11-21 16:52:21,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 621 places, 816 transitions, 14686 flow [2022-11-21 16:52:21,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 607 places, 816 transitions, 14114 flow, removed 247 selfloop flow, removed 14 redundant places. [2022-11-21 16:52:21,608 INFO L231 Difference]: Finished difference. Result has 617 places, 767 transitions, 12193 flow [2022-11-21 16:52:21,608 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=11940, PETRI_DIFFERENCE_MINUEND_PLACES=573, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=775, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=649, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=12193, PETRI_PLACES=617, PETRI_TRANSITIONS=767} [2022-11-21 16:52:21,608 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 529 predicate places. [2022-11-21 16:52:21,608 INFO L495 AbstractCegarLoop]: Abstraction has has 617 places, 767 transitions, 12193 flow [2022-11-21 16:52:21,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:21,609 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:52:21,609 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:52:21,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2022-11-21 16:52:21,609 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:52:21,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:52:21,609 INFO L85 PathProgramCache]: Analyzing trace with hash 2043720326, now seen corresponding path program 162 times [2022-11-21 16:52:21,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:52:21,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549988492] [2022-11-21 16:52:21,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:52:21,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:52:21,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:52:22,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:52:22,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:52:22,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549988492] [2022-11-21 16:52:22,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549988492] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:52:22,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:52:22,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:52:22,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682966301] [2022-11-21 16:52:22,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:52:22,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:52:22,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:52:22,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:52:22,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:52:22,107 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:52:22,108 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 617 places, 767 transitions, 12193 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:22,108 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:52:22,108 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:52:22,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:52:24,223 INFO L130 PetriNetUnfolder]: 600/1760 cut-off events. [2022-11-21 16:52:24,223 INFO L131 PetriNetUnfolder]: For 49803/49803 co-relation queries the response was YES. [2022-11-21 16:52:24,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15971 conditions, 1760 events. 600/1760 cut-off events. For 49803/49803 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 12319 event pairs, 66 based on Foata normal form. 1/1758 useless extension candidates. Maximal degree in co-relation 15748. Up to 1304 conditions per place. [2022-11-21 16:52:24,260 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 653 selfloop transitions, 100 changer transitions 22/814 dead transitions. [2022-11-21 16:52:24,260 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 632 places, 814 transitions, 14396 flow [2022-11-21 16:52:24,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-21 16:52:24,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-11-21 16:52:24,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 1555 transitions. [2022-11-21 16:52:24,263 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5704328686720469 [2022-11-21 16:52:24,263 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 1555 transitions. [2022-11-21 16:52:24,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 1555 transitions. [2022-11-21 16:52:24,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:52:24,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 1555 transitions. [2022-11-21 16:52:24,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 53.62068965517241) internal successors, (1555), 29 states have internal predecessors, (1555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:24,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 94.0) internal successors, (2820), 30 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:24,266 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 94.0) internal successors, (2820), 30 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:24,266 INFO L175 Difference]: Start difference. First operand has 617 places, 767 transitions, 12193 flow. Second operand 29 states and 1555 transitions. [2022-11-21 16:52:24,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 632 places, 814 transitions, 14396 flow [2022-11-21 16:52:24,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 596 places, 814 transitions, 14038 flow, removed 21 selfloop flow, removed 36 redundant places. [2022-11-21 16:52:24,888 INFO L231 Difference]: Finished difference. Result has 606 places, 773 transitions, 12226 flow [2022-11-21 16:52:24,889 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=11855, PETRI_DIFFERENCE_MINUEND_PLACES=568, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=767, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=670, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=12226, PETRI_PLACES=606, PETRI_TRANSITIONS=773} [2022-11-21 16:52:24,889 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 518 predicate places. [2022-11-21 16:52:24,889 INFO L495 AbstractCegarLoop]: Abstraction has has 606 places, 773 transitions, 12226 flow [2022-11-21 16:52:24,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:24,889 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:52:24,890 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:52:24,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2022-11-21 16:52:24,890 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:52:24,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:52:24,890 INFO L85 PathProgramCache]: Analyzing trace with hash -664749954, now seen corresponding path program 163 times [2022-11-21 16:52:24,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:52:24,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058821925] [2022-11-21 16:52:24,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:52:24,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:52:24,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:52:25,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:52:25,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:52:25,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058821925] [2022-11-21 16:52:25,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058821925] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:52:25,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:52:25,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:52:25,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384002166] [2022-11-21 16:52:25,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:52:25,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:52:25,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:52:25,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:52:25,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:52:25,539 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:52:25,540 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 606 places, 773 transitions, 12226 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:25,540 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:52:25,540 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:52:25,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:52:28,154 INFO L130 PetriNetUnfolder]: 667/1950 cut-off events. [2022-11-21 16:52:28,154 INFO L131 PetriNetUnfolder]: For 60022/60022 co-relation queries the response was YES. [2022-11-21 16:52:28,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17895 conditions, 1950 events. 667/1950 cut-off events. For 60022/60022 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 14149 event pairs, 51 based on Foata normal form. 1/1948 useless extension candidates. Maximal degree in co-relation 17673. Up to 1325 conditions per place. [2022-11-21 16:52:28,195 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 638 selfloop transitions, 211 changer transitions 21/909 dead transitions. [2022-11-21 16:52:28,195 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 638 places, 909 transitions, 16598 flow [2022-11-21 16:52:28,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-21 16:52:28,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-11-21 16:52:28,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 2130 transitions. [2022-11-21 16:52:28,197 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5664893617021277 [2022-11-21 16:52:28,198 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 2130 transitions. [2022-11-21 16:52:28,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 2130 transitions. [2022-11-21 16:52:28,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:52:28,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 2130 transitions. [2022-11-21 16:52:28,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 53.25) internal successors, (2130), 40 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:28,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 94.0) internal successors, (3854), 41 states have internal predecessors, (3854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:28,201 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 94.0) internal successors, (3854), 41 states have internal predecessors, (3854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:28,202 INFO L175 Difference]: Start difference. First operand has 606 places, 773 transitions, 12226 flow. Second operand 40 states and 2130 transitions. [2022-11-21 16:52:28,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 638 places, 909 transitions, 16598 flow [2022-11-21 16:52:28,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 617 places, 909 transitions, 16309 flow, removed 83 selfloop flow, removed 21 redundant places. [2022-11-21 16:52:28,783 INFO L231 Difference]: Finished difference. Result has 633 places, 857 transitions, 14412 flow [2022-11-21 16:52:28,784 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=11993, PETRI_DIFFERENCE_MINUEND_PLACES=578, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=773, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=593, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=14412, PETRI_PLACES=633, PETRI_TRANSITIONS=857} [2022-11-21 16:52:28,784 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 545 predicate places. [2022-11-21 16:52:28,784 INFO L495 AbstractCegarLoop]: Abstraction has has 633 places, 857 transitions, 14412 flow [2022-11-21 16:52:28,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:28,784 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:52:28,784 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:52:28,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2022-11-21 16:52:28,785 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:52:28,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:52:28,785 INFO L85 PathProgramCache]: Analyzing trace with hash 706741162, now seen corresponding path program 164 times [2022-11-21 16:52:28,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:52:28,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737201142] [2022-11-21 16:52:28,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:52:28,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:52:28,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:52:29,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:52:29,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:52:29,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737201142] [2022-11-21 16:52:29,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737201142] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:52:29,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:52:29,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:52:29,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531067480] [2022-11-21 16:52:29,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:52:29,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:52:29,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:52:29,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:52:29,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:52:29,276 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:52:29,277 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 633 places, 857 transitions, 14412 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:29,277 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:52:29,277 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:52:29,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:52:31,819 INFO L130 PetriNetUnfolder]: 670/1974 cut-off events. [2022-11-21 16:52:31,819 INFO L131 PetriNetUnfolder]: For 67339/67339 co-relation queries the response was YES. [2022-11-21 16:52:31,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18790 conditions, 1974 events. 670/1974 cut-off events. For 67339/67339 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 14466 event pairs, 51 based on Foata normal form. 1/1972 useless extension candidates. Maximal degree in co-relation 18558. Up to 1438 conditions per place. [2022-11-21 16:52:31,865 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 720 selfloop transitions, 122 changer transitions 26/907 dead transitions. [2022-11-21 16:52:31,865 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 659 places, 907 transitions, 17132 flow [2022-11-21 16:52:31,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-21 16:52:31,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-21 16:52:31,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1761 transitions. [2022-11-21 16:52:31,867 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5676982591876208 [2022-11-21 16:52:31,867 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1761 transitions. [2022-11-21 16:52:31,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1761 transitions. [2022-11-21 16:52:31,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:52:31,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1761 transitions. [2022-11-21 16:52:31,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 53.36363636363637) internal successors, (1761), 33 states have internal predecessors, (1761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:31,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:31,870 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:31,870 INFO L175 Difference]: Start difference. First operand has 633 places, 857 transitions, 14412 flow. Second operand 33 states and 1761 transitions. [2022-11-21 16:52:31,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 659 places, 907 transitions, 17132 flow [2022-11-21 16:52:32,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 641 places, 907 transitions, 16238 flow, removed 399 selfloop flow, removed 18 redundant places. [2022-11-21 16:52:32,557 INFO L231 Difference]: Finished difference. Result has 651 places, 860 transitions, 14004 flow [2022-11-21 16:52:32,558 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=13556, PETRI_DIFFERENCE_MINUEND_PLACES=609, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=857, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=737, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=14004, PETRI_PLACES=651, PETRI_TRANSITIONS=860} [2022-11-21 16:52:32,558 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 563 predicate places. [2022-11-21 16:52:32,558 INFO L495 AbstractCegarLoop]: Abstraction has has 651 places, 860 transitions, 14004 flow [2022-11-21 16:52:32,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:32,558 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:52:32,558 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:52:32,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2022-11-21 16:52:32,559 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:52:32,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:52:32,559 INFO L85 PathProgramCache]: Analyzing trace with hash -50515862, now seen corresponding path program 165 times [2022-11-21 16:52:32,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:52:32,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072693112] [2022-11-21 16:52:32,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:52:32,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:52:32,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:52:33,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:52:33,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:52:33,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072693112] [2022-11-21 16:52:33,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072693112] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:52:33,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:52:33,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:52:33,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572454712] [2022-11-21 16:52:33,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:52:33,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:52:33,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:52:33,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:52:33,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:52:33,030 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:52:33,031 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 651 places, 860 transitions, 14004 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:33,031 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:52:33,031 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:52:33,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:52:35,652 INFO L130 PetriNetUnfolder]: 731/2125 cut-off events. [2022-11-21 16:52:35,652 INFO L131 PetriNetUnfolder]: For 76827/76827 co-relation queries the response was YES. [2022-11-21 16:52:35,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20369 conditions, 2125 events. 731/2125 cut-off events. For 76827/76827 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 15904 event pairs, 55 based on Foata normal form. 1/2123 useless extension candidates. Maximal degree in co-relation 20128. Up to 1419 conditions per place. [2022-11-21 16:52:35,698 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 720 selfloop transitions, 204 changer transitions 47/1010 dead transitions. [2022-11-21 16:52:35,698 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 677 places, 1010 transitions, 18991 flow [2022-11-21 16:52:35,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-21 16:52:35,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-21 16:52:35,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1813 transitions. [2022-11-21 16:52:35,701 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5672715894868585 [2022-11-21 16:52:35,701 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1813 transitions. [2022-11-21 16:52:35,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1813 transitions. [2022-11-21 16:52:35,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:52:35,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1813 transitions. [2022-11-21 16:52:35,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.3235294117647) internal successors, (1813), 34 states have internal predecessors, (1813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:35,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:35,704 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:35,704 INFO L175 Difference]: Start difference. First operand has 651 places, 860 transitions, 14004 flow. Second operand 34 states and 1813 transitions. [2022-11-21 16:52:35,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 677 places, 1010 transitions, 18991 flow [2022-11-21 16:52:36,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 648 places, 1010 transitions, 18666 flow, removed 69 selfloop flow, removed 29 redundant places. [2022-11-21 16:52:36,413 INFO L231 Difference]: Finished difference. Result has 660 places, 927 transitions, 15865 flow [2022-11-21 16:52:36,414 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=13715, PETRI_DIFFERENCE_MINUEND_PLACES=615, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=860, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=670, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=15865, PETRI_PLACES=660, PETRI_TRANSITIONS=927} [2022-11-21 16:52:36,414 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 572 predicate places. [2022-11-21 16:52:36,414 INFO L495 AbstractCegarLoop]: Abstraction has has 660 places, 927 transitions, 15865 flow [2022-11-21 16:52:36,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:36,414 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:52:36,415 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:52:36,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2022-11-21 16:52:36,415 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:52:36,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:52:36,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1227091020, now seen corresponding path program 166 times [2022-11-21 16:52:36,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:52:36,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798238303] [2022-11-21 16:52:36,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:52:36,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:52:36,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:52:36,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:52:36,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:52:36,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798238303] [2022-11-21 16:52:36,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798238303] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:52:36,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:52:36,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-21 16:52:36,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424851838] [2022-11-21 16:52:36,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:52:36,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-21 16:52:36,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:52:36,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-21 16:52:36,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-11-21 16:52:36,831 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:52:36,832 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 660 places, 927 transitions, 15865 flow. Second operand has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:36,832 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:52:36,832 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:52:36,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:52:39,558 INFO L130 PetriNetUnfolder]: 719/2092 cut-off events. [2022-11-21 16:52:39,558 INFO L131 PetriNetUnfolder]: For 81339/81339 co-relation queries the response was YES. [2022-11-21 16:52:39,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20751 conditions, 2092 events. 719/2092 cut-off events. For 81339/81339 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 15532 event pairs, 45 based on Foata normal form. 1/2090 useless extension candidates. Maximal degree in co-relation 20506. Up to 1535 conditions per place. [2022-11-21 16:52:39,603 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 776 selfloop transitions, 145 changer transitions 25/985 dead transitions. [2022-11-21 16:52:39,603 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 684 places, 985 transitions, 19000 flow [2022-11-21 16:52:39,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-21 16:52:39,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-21 16:52:39,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1769 transitions. [2022-11-21 16:52:39,606 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5702772404900065 [2022-11-21 16:52:39,606 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1769 transitions. [2022-11-21 16:52:39,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1769 transitions. [2022-11-21 16:52:39,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:52:39,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1769 transitions. [2022-11-21 16:52:39,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 53.60606060606061) internal successors, (1769), 33 states have internal predecessors, (1769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:39,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:39,609 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:39,610 INFO L175 Difference]: Start difference. First operand has 660 places, 927 transitions, 15865 flow. Second operand 33 states and 1769 transitions. [2022-11-21 16:52:39,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 684 places, 985 transitions, 19000 flow [2022-11-21 16:52:40,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 657 places, 985 transitions, 18312 flow, removed 217 selfloop flow, removed 27 redundant places. [2022-11-21 16:52:40,597 INFO L231 Difference]: Finished difference. Result has 667 places, 938 transitions, 15945 flow [2022-11-21 16:52:40,597 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=15221, PETRI_DIFFERENCE_MINUEND_PLACES=625, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=927, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=785, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=15945, PETRI_PLACES=667, PETRI_TRANSITIONS=938} [2022-11-21 16:52:40,597 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 579 predicate places. [2022-11-21 16:52:40,597 INFO L495 AbstractCegarLoop]: Abstraction has has 667 places, 938 transitions, 15945 flow [2022-11-21 16:52:40,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:40,598 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:52:40,598 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:52:40,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2022-11-21 16:52:40,598 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:52:40,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:52:40,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1866040382, now seen corresponding path program 167 times [2022-11-21 16:52:40,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:52:40,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974640149] [2022-11-21 16:52:40,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:52:40,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:52:40,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:52:41,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:52:41,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:52:41,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974640149] [2022-11-21 16:52:41,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974640149] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:52:41,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:52:41,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:52:41,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566109014] [2022-11-21 16:52:41,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:52:41,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:52:41,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:52:41,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:52:41,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:52:41,177 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:52:41,178 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 667 places, 938 transitions, 15945 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:41,178 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:52:41,178 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:52:41,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:52:44,044 INFO L130 PetriNetUnfolder]: 720/2104 cut-off events. [2022-11-21 16:52:44,045 INFO L131 PetriNetUnfolder]: For 79788/79788 co-relation queries the response was YES. [2022-11-21 16:52:44,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20819 conditions, 2104 events. 720/2104 cut-off events. For 79788/79788 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 15748 event pairs, 52 based on Foata normal form. 1/2102 useless extension candidates. Maximal degree in co-relation 20571. Up to 1566 conditions per place. [2022-11-21 16:52:44,097 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 800 selfloop transitions, 115 changer transitions 30/984 dead transitions. [2022-11-21 16:52:44,098 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 694 places, 984 transitions, 18884 flow [2022-11-21 16:52:44,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-21 16:52:44,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-21 16:52:44,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1853 transitions. [2022-11-21 16:52:44,100 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5632218844984802 [2022-11-21 16:52:44,100 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1853 transitions. [2022-11-21 16:52:44,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1853 transitions. [2022-11-21 16:52:44,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:52:44,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1853 transitions. [2022-11-21 16:52:44,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 52.94285714285714) internal successors, (1853), 35 states have internal predecessors, (1853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:44,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:44,104 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:44,104 INFO L175 Difference]: Start difference. First operand has 667 places, 938 transitions, 15945 flow. Second operand 35 states and 1853 transitions. [2022-11-21 16:52:44,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 694 places, 984 transitions, 18884 flow [2022-11-21 16:52:45,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 667 places, 984 transitions, 18502 flow, removed 121 selfloop flow, removed 27 redundant places. [2022-11-21 16:52:45,027 INFO L231 Difference]: Finished difference. Result has 677 places, 936 transitions, 16002 flow [2022-11-21 16:52:45,028 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=15613, PETRI_DIFFERENCE_MINUEND_PLACES=633, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=938, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=824, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=16002, PETRI_PLACES=677, PETRI_TRANSITIONS=936} [2022-11-21 16:52:45,029 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 589 predicate places. [2022-11-21 16:52:45,029 INFO L495 AbstractCegarLoop]: Abstraction has has 677 places, 936 transitions, 16002 flow [2022-11-21 16:52:45,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:45,029 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:52:45,030 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:52:45,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2022-11-21 16:52:45,030 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:52:45,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:52:45,031 INFO L85 PathProgramCache]: Analyzing trace with hash -820000484, now seen corresponding path program 168 times [2022-11-21 16:52:45,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:52:45,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064914420] [2022-11-21 16:52:45,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:52:45,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:52:45,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:52:45,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:52:45,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:52:45,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064914420] [2022-11-21 16:52:45,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064914420] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:52:45,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:52:45,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-21 16:52:45,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295965252] [2022-11-21 16:52:45,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:52:45,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-21 16:52:45,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:52:45,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-21 16:52:45,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-11-21 16:52:45,484 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:52:45,484 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 677 places, 936 transitions, 16002 flow. Second operand has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:45,485 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:52:45,485 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:52:45,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:52:48,064 INFO L130 PetriNetUnfolder]: 728/2143 cut-off events. [2022-11-21 16:52:48,064 INFO L131 PetriNetUnfolder]: For 82017/82017 co-relation queries the response was YES. [2022-11-21 16:52:48,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21141 conditions, 2143 events. 728/2143 cut-off events. For 82017/82017 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 16200 event pairs, 52 based on Foata normal form. 1/2141 useless extension candidates. Maximal degree in co-relation 20891. Up to 1525 conditions per place. [2022-11-21 16:52:48,119 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 771 selfloop transitions, 173 changer transitions 26/1009 dead transitions. [2022-11-21 16:52:48,119 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 698 places, 1009 transitions, 19500 flow [2022-11-21 16:52:48,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-21 16:52:48,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-21 16:52:48,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1707 transitions. [2022-11-21 16:52:48,122 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5674867021276596 [2022-11-21 16:52:48,122 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1707 transitions. [2022-11-21 16:52:48,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1707 transitions. [2022-11-21 16:52:48,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:52:48,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1707 transitions. [2022-11-21 16:52:48,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 53.34375) internal successors, (1707), 32 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:48,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:48,125 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:48,125 INFO L175 Difference]: Start difference. First operand has 677 places, 936 transitions, 16002 flow. Second operand 32 states and 1707 transitions. [2022-11-21 16:52:48,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 698 places, 1009 transitions, 19500 flow [2022-11-21 16:52:48,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 664 places, 1009 transitions, 19087 flow, removed 78 selfloop flow, removed 34 redundant places. [2022-11-21 16:52:49,008 INFO L231 Difference]: Finished difference. Result has 674 places, 959 transitions, 16671 flow [2022-11-21 16:52:49,008 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=15633, PETRI_DIFFERENCE_MINUEND_PLACES=633, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=936, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=767, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=16671, PETRI_PLACES=674, PETRI_TRANSITIONS=959} [2022-11-21 16:52:49,008 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 586 predicate places. [2022-11-21 16:52:49,008 INFO L495 AbstractCegarLoop]: Abstraction has has 674 places, 959 transitions, 16671 flow [2022-11-21 16:52:49,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:49,009 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:52:49,009 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:52:49,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2022-11-21 16:52:49,010 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:52:49,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:52:49,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1117866652, now seen corresponding path program 169 times [2022-11-21 16:52:49,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:52:49,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60952167] [2022-11-21 16:52:49,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:52:49,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:52:49,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:52:49,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:52:49,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:52:49,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60952167] [2022-11-21 16:52:49,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60952167] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:52:49,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:52:49,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:52:49,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952260446] [2022-11-21 16:52:49,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:52:49,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:52:49,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:52:49,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:52:49,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:52:49,464 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:52:49,464 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 674 places, 959 transitions, 16671 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:49,465 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:52:49,465 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:52:49,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:52:51,936 INFO L130 PetriNetUnfolder]: 729/2161 cut-off events. [2022-11-21 16:52:51,937 INFO L131 PetriNetUnfolder]: For 84406/84406 co-relation queries the response was YES. [2022-11-21 16:52:51,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21381 conditions, 2161 events. 729/2161 cut-off events. For 84406/84406 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 16413 event pairs, 50 based on Foata normal form. 1/2159 useless extension candidates. Maximal degree in co-relation 21131. Up to 1522 conditions per place. [2022-11-21 16:52:51,987 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 768 selfloop transitions, 179 changer transitions 28/1014 dead transitions. [2022-11-21 16:52:51,987 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 699 places, 1014 transitions, 19859 flow [2022-11-21 16:52:51,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-21 16:52:51,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-21 16:52:51,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1757 transitions. [2022-11-21 16:52:51,989 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5664087685364281 [2022-11-21 16:52:51,989 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1757 transitions. [2022-11-21 16:52:51,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1757 transitions. [2022-11-21 16:52:51,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:52:51,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1757 transitions. [2022-11-21 16:52:51,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 53.24242424242424) internal successors, (1757), 33 states have internal predecessors, (1757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:51,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:51,993 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:51,993 INFO L175 Difference]: Start difference. First operand has 674 places, 959 transitions, 16671 flow. Second operand 33 states and 1757 transitions. [2022-11-21 16:52:51,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 699 places, 1014 transitions, 19859 flow [2022-11-21 16:52:52,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 675 places, 1014 transitions, 19570 flow, removed 94 selfloop flow, removed 24 redundant places. [2022-11-21 16:52:52,906 INFO L231 Difference]: Finished difference. Result has 685 places, 962 transitions, 17013 flow [2022-11-21 16:52:52,906 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=16410, PETRI_DIFFERENCE_MINUEND_PLACES=643, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=959, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=784, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=17013, PETRI_PLACES=685, PETRI_TRANSITIONS=962} [2022-11-21 16:52:52,907 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 597 predicate places. [2022-11-21 16:52:52,907 INFO L495 AbstractCegarLoop]: Abstraction has has 685 places, 962 transitions, 17013 flow [2022-11-21 16:52:52,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:52,907 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:52:52,907 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:52:52,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2022-11-21 16:52:52,907 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:52:52,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:52:52,908 INFO L85 PathProgramCache]: Analyzing trace with hash 172734910, now seen corresponding path program 170 times [2022-11-21 16:52:52,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:52:52,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742614051] [2022-11-21 16:52:52,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:52:52,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:52:52,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:52:53,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:52:53,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:52:53,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742614051] [2022-11-21 16:52:53,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742614051] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:52:53,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:52:53,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:52:53,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927746596] [2022-11-21 16:52:53,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:52:53,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:52:53,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:52:53,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:52:53,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:52:53,447 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:52:53,447 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 685 places, 962 transitions, 17013 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:53,447 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:52:53,447 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:52:53,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:52:56,299 INFO L130 PetriNetUnfolder]: 733/2160 cut-off events. [2022-11-21 16:52:56,300 INFO L131 PetriNetUnfolder]: For 87484/87484 co-relation queries the response was YES. [2022-11-21 16:52:56,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21770 conditions, 2160 events. 733/2160 cut-off events. For 87484/87484 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 16373 event pairs, 61 based on Foata normal form. 1/2158 useless extension candidates. Maximal degree in co-relation 21516. Up to 1606 conditions per place. [2022-11-21 16:52:56,354 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 832 selfloop transitions, 116 changer transitions 30/1017 dead transitions. [2022-11-21 16:52:56,354 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 714 places, 1017 transitions, 20152 flow [2022-11-21 16:52:56,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-21 16:52:56,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-21 16:52:56,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1950 transitions. [2022-11-21 16:52:56,357 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5606670500287522 [2022-11-21 16:52:56,357 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1950 transitions. [2022-11-21 16:52:56,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1950 transitions. [2022-11-21 16:52:56,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:52:56,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1950 transitions. [2022-11-21 16:52:56,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 52.7027027027027) internal successors, (1950), 37 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:56,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:56,361 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:56,361 INFO L175 Difference]: Start difference. First operand has 685 places, 962 transitions, 17013 flow. Second operand 37 states and 1950 transitions. [2022-11-21 16:52:56,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 714 places, 1017 transitions, 20152 flow [2022-11-21 16:52:57,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 687 places, 1017 transitions, 19783 flow, removed 81 selfloop flow, removed 27 redundant places. [2022-11-21 16:52:57,277 INFO L231 Difference]: Finished difference. Result has 697 places, 971 transitions, 17308 flow [2022-11-21 16:52:57,277 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=16676, PETRI_DIFFERENCE_MINUEND_PLACES=651, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=962, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=847, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=17308, PETRI_PLACES=697, PETRI_TRANSITIONS=971} [2022-11-21 16:52:57,277 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 609 predicate places. [2022-11-21 16:52:57,277 INFO L495 AbstractCegarLoop]: Abstraction has has 697 places, 971 transitions, 17308 flow [2022-11-21 16:52:57,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:57,278 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:52:57,278 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:52:57,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2022-11-21 16:52:57,278 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:52:57,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:52:57,278 INFO L85 PathProgramCache]: Analyzing trace with hash 432502776, now seen corresponding path program 171 times [2022-11-21 16:52:57,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:52:57,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113200457] [2022-11-21 16:52:57,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:52:57,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:52:57,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:52:57,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:52:57,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:52:57,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113200457] [2022-11-21 16:52:57,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113200457] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:52:57,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:52:57,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:52:57,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534234120] [2022-11-21 16:52:57,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:52:57,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:52:57,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:52:57,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:52:57,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:52:57,747 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:52:57,747 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 697 places, 971 transitions, 17308 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:57,747 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:52:57,747 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:52:57,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:53:00,463 INFO L130 PetriNetUnfolder]: 747/2197 cut-off events. [2022-11-21 16:53:00,463 INFO L131 PetriNetUnfolder]: For 92742/92742 co-relation queries the response was YES. [2022-11-21 16:53:00,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22474 conditions, 2197 events. 747/2197 cut-off events. For 92742/92742 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 16751 event pairs, 48 based on Foata normal form. 1/2195 useless extension candidates. Maximal degree in co-relation 22218. Up to 1653 conditions per place. [2022-11-21 16:53:00,518 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 860 selfloop transitions, 127 changer transitions 21/1047 dead transitions. [2022-11-21 16:53:00,518 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 726 places, 1047 transitions, 21241 flow [2022-11-21 16:53:00,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-21 16:53:00,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-11-21 16:53:00,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 2075 transitions. [2022-11-21 16:53:00,526 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5660120021822149 [2022-11-21 16:53:00,526 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 2075 transitions. [2022-11-21 16:53:00,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 2075 transitions. [2022-11-21 16:53:00,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:53:00,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 2075 transitions. [2022-11-21 16:53:00,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 53.205128205128204) internal successors, (2075), 39 states have internal predecessors, (2075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:00,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 94.0) internal successors, (3760), 40 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:00,533 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 94.0) internal successors, (3760), 40 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:00,534 INFO L175 Difference]: Start difference. First operand has 697 places, 971 transitions, 17308 flow. Second operand 39 states and 2075 transitions. [2022-11-21 16:53:00,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 726 places, 1047 transitions, 21241 flow [2022-11-21 16:53:01,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 696 places, 1047 transitions, 20774 flow, removed 117 selfloop flow, removed 30 redundant places. [2022-11-21 16:53:01,654 INFO L231 Difference]: Finished difference. Result has 708 places, 1002 transitions, 18197 flow [2022-11-21 16:53:01,654 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=16895, PETRI_DIFFERENCE_MINUEND_PLACES=658, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=971, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=861, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=18197, PETRI_PLACES=708, PETRI_TRANSITIONS=1002} [2022-11-21 16:53:01,655 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 620 predicate places. [2022-11-21 16:53:01,655 INFO L495 AbstractCegarLoop]: Abstraction has has 708 places, 1002 transitions, 18197 flow [2022-11-21 16:53:01,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:01,655 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:53:01,655 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:53:01,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2022-11-21 16:53:01,655 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:53:01,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:53:01,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1115000266, now seen corresponding path program 172 times [2022-11-21 16:53:01,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:53:01,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612169409] [2022-11-21 16:53:01,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:53:01,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:53:01,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:53:02,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:53:02,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:53:02,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612169409] [2022-11-21 16:53:02,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612169409] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:53:02,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:53:02,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-21 16:53:02,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262458739] [2022-11-21 16:53:02,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:53:02,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-21 16:53:02,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:53:02,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-21 16:53:02,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-11-21 16:53:02,146 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:53:02,147 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 708 places, 1002 transitions, 18197 flow. Second operand has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:02,147 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:53:02,147 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:53:02,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:53:04,999 INFO L130 PetriNetUnfolder]: 748/2210 cut-off events. [2022-11-21 16:53:04,999 INFO L131 PetriNetUnfolder]: For 98163/98163 co-relation queries the response was YES. [2022-11-21 16:53:05,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22859 conditions, 2210 events. 748/2210 cut-off events. For 98163/98163 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 16838 event pairs, 47 based on Foata normal form. 1/2208 useless extension candidates. Maximal degree in co-relation 22598. Up to 1660 conditions per place. [2022-11-21 16:53:05,082 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 867 selfloop transitions, 123 changer transitions 18/1047 dead transitions. [2022-11-21 16:53:05,083 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 731 places, 1047 transitions, 21211 flow [2022-11-21 16:53:05,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-21 16:53:05,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-21 16:53:05,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1614 transitions. [2022-11-21 16:53:05,085 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5723404255319149 [2022-11-21 16:53:05,085 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1614 transitions. [2022-11-21 16:53:05,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1614 transitions. [2022-11-21 16:53:05,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:53:05,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1614 transitions. [2022-11-21 16:53:05,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 53.8) internal successors, (1614), 30 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:05,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:05,090 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:05,090 INFO L175 Difference]: Start difference. First operand has 708 places, 1002 transitions, 18197 flow. Second operand 30 states and 1614 transitions. [2022-11-21 16:53:05,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 731 places, 1047 transitions, 21211 flow [2022-11-21 16:53:06,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 714 places, 1047 transitions, 20449 flow, removed 326 selfloop flow, removed 17 redundant places. [2022-11-21 16:53:06,191 INFO L231 Difference]: Finished difference. Result has 721 places, 1010 transitions, 18075 flow [2022-11-21 16:53:06,191 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=17439, PETRI_DIFFERENCE_MINUEND_PLACES=685, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1002, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=884, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=18075, PETRI_PLACES=721, PETRI_TRANSITIONS=1010} [2022-11-21 16:53:06,192 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 633 predicate places. [2022-11-21 16:53:06,192 INFO L495 AbstractCegarLoop]: Abstraction has has 721 places, 1010 transitions, 18075 flow [2022-11-21 16:53:06,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:06,192 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:53:06,192 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:53:06,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2022-11-21 16:53:06,192 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:53:06,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:53:06,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1507605220, now seen corresponding path program 173 times [2022-11-21 16:53:06,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:53:06,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180787072] [2022-11-21 16:53:06,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:53:06,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:53:06,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:53:06,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:53:06,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:53:06,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180787072] [2022-11-21 16:53:06,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180787072] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:53:06,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:53:06,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:53:06,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333388745] [2022-11-21 16:53:06,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:53:06,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:53:06,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:53:06,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:53:06,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:53:06,697 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:53:06,697 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 721 places, 1010 transitions, 18075 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:06,697 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:53:06,698 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:53:06,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:53:09,965 INFO L130 PetriNetUnfolder]: 757/2245 cut-off events. [2022-11-21 16:53:09,965 INFO L131 PetriNetUnfolder]: For 103391/103391 co-relation queries the response was YES. [2022-11-21 16:53:10,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23191 conditions, 2245 events. 757/2245 cut-off events. For 103391/103391 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 17297 event pairs, 47 based on Foata normal form. 1/2243 useless extension candidates. Maximal degree in co-relation 22924. Up to 1473 conditions per place. [2022-11-21 16:53:10,027 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 718 selfloop transitions, 284 changer transitions 29/1070 dead transitions. [2022-11-21 16:53:10,027 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 759 places, 1070 transitions, 21546 flow [2022-11-21 16:53:10,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-21 16:53:10,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-11-21 16:53:10,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 2320 transitions. [2022-11-21 16:53:10,030 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5609284332688588 [2022-11-21 16:53:10,030 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 2320 transitions. [2022-11-21 16:53:10,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 2320 transitions. [2022-11-21 16:53:10,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:53:10,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 2320 transitions. [2022-11-21 16:53:10,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 52.72727272727273) internal successors, (2320), 44 states have internal predecessors, (2320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:10,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 94.0) internal successors, (4230), 45 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:10,034 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 94.0) internal successors, (4230), 45 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:10,034 INFO L175 Difference]: Start difference. First operand has 721 places, 1010 transitions, 18075 flow. Second operand 44 states and 2320 transitions. [2022-11-21 16:53:10,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 759 places, 1070 transitions, 21546 flow [2022-11-21 16:53:11,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 734 places, 1070 transitions, 21023 flow, removed 175 selfloop flow, removed 25 redundant places. [2022-11-21 16:53:11,406 INFO L231 Difference]: Finished difference. Result has 744 places, 1016 transitions, 18494 flow [2022-11-21 16:53:11,406 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=17576, PETRI_DIFFERENCE_MINUEND_PLACES=691, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1010, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=275, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=731, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=18494, PETRI_PLACES=744, PETRI_TRANSITIONS=1016} [2022-11-21 16:53:11,407 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 656 predicate places. [2022-11-21 16:53:11,407 INFO L495 AbstractCegarLoop]: Abstraction has has 744 places, 1016 transitions, 18494 flow [2022-11-21 16:53:11,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:11,407 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:53:11,407 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:53:11,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2022-11-21 16:53:11,407 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:53:11,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:53:11,408 INFO L85 PathProgramCache]: Analyzing trace with hash -682117680, now seen corresponding path program 174 times [2022-11-21 16:53:11,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:53:11,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528283044] [2022-11-21 16:53:11,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:53:11,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:53:11,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:53:11,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:53:11,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:53:11,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528283044] [2022-11-21 16:53:11,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528283044] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:53:11,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:53:11,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:53:11,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293232274] [2022-11-21 16:53:11,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:53:11,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:53:11,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:53:11,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:53:11,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:53:11,916 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:53:11,916 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 744 places, 1016 transitions, 18494 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:11,916 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:53:11,916 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:53:11,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:53:15,088 INFO L130 PetriNetUnfolder]: 750/2231 cut-off events. [2022-11-21 16:53:15,088 INFO L131 PetriNetUnfolder]: For 101504/101504 co-relation queries the response was YES. [2022-11-21 16:53:15,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23178 conditions, 2231 events. 750/2231 cut-off events. For 101504/101504 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 17124 event pairs, 47 based on Foata normal form. 1/2229 useless extension candidates. Maximal degree in co-relation 22907. Up to 1646 conditions per place. [2022-11-21 16:53:15,142 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 854 selfloop transitions, 153 changer transitions 18/1064 dead transitions. [2022-11-21 16:53:15,143 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 771 places, 1064 transitions, 21680 flow [2022-11-21 16:53:15,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-21 16:53:15,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-21 16:53:15,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1872 transitions. [2022-11-21 16:53:15,146 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5689969604863222 [2022-11-21 16:53:15,146 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1872 transitions. [2022-11-21 16:53:15,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1872 transitions. [2022-11-21 16:53:15,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:53:15,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1872 transitions. [2022-11-21 16:53:15,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 53.48571428571429) internal successors, (1872), 35 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:15,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:15,151 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:15,151 INFO L175 Difference]: Start difference. First operand has 744 places, 1016 transitions, 18494 flow. Second operand 35 states and 1872 transitions. [2022-11-21 16:53:15,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 771 places, 1064 transitions, 21680 flow [2022-11-21 16:53:16,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 735 places, 1064 transitions, 21264 flow, removed 80 selfloop flow, removed 36 redundant places. [2022-11-21 16:53:16,333 INFO L231 Difference]: Finished difference. Result has 743 places, 1024 transitions, 18823 flow [2022-11-21 16:53:16,333 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=18100, PETRI_DIFFERENCE_MINUEND_PLACES=701, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1016, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=868, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=18823, PETRI_PLACES=743, PETRI_TRANSITIONS=1024} [2022-11-21 16:53:16,333 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 655 predicate places. [2022-11-21 16:53:16,334 INFO L495 AbstractCegarLoop]: Abstraction has has 743 places, 1024 transitions, 18823 flow [2022-11-21 16:53:16,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:16,334 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:53:16,334 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:53:16,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2022-11-21 16:53:16,334 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:53:16,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:53:16,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1758491220, now seen corresponding path program 175 times [2022-11-21 16:53:16,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:53:16,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885113622] [2022-11-21 16:53:16,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:53:16,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:53:16,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:53:16,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:53:16,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:53:16,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885113622] [2022-11-21 16:53:16,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885113622] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:53:16,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:53:16,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:53:16,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069451967] [2022-11-21 16:53:16,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:53:16,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:53:16,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:53:16,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:53:16,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:53:16,855 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:53:16,855 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 743 places, 1024 transitions, 18823 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:16,855 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:53:16,856 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:53:16,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:53:19,638 INFO L130 PetriNetUnfolder]: 757/2248 cut-off events. [2022-11-21 16:53:19,638 INFO L131 PetriNetUnfolder]: For 105375/105375 co-relation queries the response was YES. [2022-11-21 16:53:19,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23583 conditions, 2248 events. 757/2248 cut-off events. For 105375/105375 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 17267 event pairs, 50 based on Foata normal form. 1/2246 useless extension candidates. Maximal degree in co-relation 23311. Up to 1696 conditions per place. [2022-11-21 16:53:19,697 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 899 selfloop transitions, 120 changer transitions 20/1078 dead transitions. [2022-11-21 16:53:19,697 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 771 places, 1078 transitions, 22079 flow [2022-11-21 16:53:19,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-21 16:53:19,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-21 16:53:19,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1812 transitions. [2022-11-21 16:53:19,699 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5669586983729662 [2022-11-21 16:53:19,700 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1812 transitions. [2022-11-21 16:53:19,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1812 transitions. [2022-11-21 16:53:19,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:53:19,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1812 transitions. [2022-11-21 16:53:19,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.294117647058826) internal successors, (1812), 34 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:19,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:19,703 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:19,703 INFO L175 Difference]: Start difference. First operand has 743 places, 1024 transitions, 18823 flow. Second operand 34 states and 1812 transitions. [2022-11-21 16:53:19,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 771 places, 1078 transitions, 22079 flow [2022-11-21 16:53:21,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 746 places, 1078 transitions, 21591 flow, removed 171 selfloop flow, removed 25 redundant places. [2022-11-21 16:53:21,212 INFO L231 Difference]: Finished difference. Result has 757 places, 1039 transitions, 19093 flow [2022-11-21 16:53:21,213 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=18384, PETRI_DIFFERENCE_MINUEND_PLACES=713, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1024, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=912, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=19093, PETRI_PLACES=757, PETRI_TRANSITIONS=1039} [2022-11-21 16:53:21,213 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 669 predicate places. [2022-11-21 16:53:21,214 INFO L495 AbstractCegarLoop]: Abstraction has has 757 places, 1039 transitions, 19093 flow [2022-11-21 16:53:21,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:21,214 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:53:21,214 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:53:21,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2022-11-21 16:53:21,215 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:53:21,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:53:21,216 INFO L85 PathProgramCache]: Analyzing trace with hash 236371498, now seen corresponding path program 176 times [2022-11-21 16:53:21,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:53:21,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528068874] [2022-11-21 16:53:21,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:53:21,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:53:21,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:53:21,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:53:21,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:53:21,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528068874] [2022-11-21 16:53:21,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528068874] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:53:21,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:53:21,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-21 16:53:21,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058098424] [2022-11-21 16:53:21,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:53:21,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-21 16:53:21,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:53:21,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-21 16:53:21,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-21 16:53:21,868 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:53:21,869 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 757 places, 1039 transitions, 19093 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:21,869 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:53:21,869 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:53:21,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:53:25,229 INFO L130 PetriNetUnfolder]: 763/2251 cut-off events. [2022-11-21 16:53:25,229 INFO L131 PetriNetUnfolder]: For 108242/108242 co-relation queries the response was YES. [2022-11-21 16:53:25,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23885 conditions, 2251 events. 763/2251 cut-off events. For 108242/108242 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 17290 event pairs, 48 based on Foata normal form. 1/2250 useless extension candidates. Maximal degree in co-relation 23607. Up to 1677 conditions per place. [2022-11-21 16:53:25,287 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 893 selfloop transitions, 124 changer transitions 27/1083 dead transitions. [2022-11-21 16:53:25,287 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 787 places, 1083 transitions, 22245 flow [2022-11-21 16:53:25,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-21 16:53:25,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-21 16:53:25,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1950 transitions. [2022-11-21 16:53:25,290 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5606670500287522 [2022-11-21 16:53:25,290 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1950 transitions. [2022-11-21 16:53:25,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1950 transitions. [2022-11-21 16:53:25,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:53:25,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1950 transitions. [2022-11-21 16:53:25,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 52.7027027027027) internal successors, (1950), 37 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:25,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:25,293 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:25,294 INFO L175 Difference]: Start difference. First operand has 757 places, 1039 transitions, 19093 flow. Second operand 37 states and 1950 transitions. [2022-11-21 16:53:25,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 787 places, 1083 transitions, 22245 flow [2022-11-21 16:53:26,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 762 places, 1083 transitions, 21736 flow, removed 163 selfloop flow, removed 25 redundant places. [2022-11-21 16:53:26,470 INFO L231 Difference]: Finished difference. Result has 773 places, 1039 transitions, 19108 flow [2022-11-21 16:53:26,471 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=18598, PETRI_DIFFERENCE_MINUEND_PLACES=726, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1039, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=916, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=19108, PETRI_PLACES=773, PETRI_TRANSITIONS=1039} [2022-11-21 16:53:26,471 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 685 predicate places. [2022-11-21 16:53:26,472 INFO L495 AbstractCegarLoop]: Abstraction has has 773 places, 1039 transitions, 19108 flow [2022-11-21 16:53:26,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:26,472 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:53:26,472 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:53:26,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2022-11-21 16:53:26,473 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:53:26,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:53:26,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1080236758, now seen corresponding path program 177 times [2022-11-21 16:53:26,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:53:26,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435887293] [2022-11-21 16:53:26,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:53:26,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:53:26,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:53:27,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:53:27,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:53:27,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435887293] [2022-11-21 16:53:27,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435887293] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:53:27,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:53:27,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-21 16:53:27,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046281392] [2022-11-21 16:53:27,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:53:27,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-21 16:53:27,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:53:27,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-21 16:53:27,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-21 16:53:27,045 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:53:27,046 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 773 places, 1039 transitions, 19108 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:27,046 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:53:27,046 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:53:27,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:53:29,969 INFO L130 PetriNetUnfolder]: 751/2243 cut-off events. [2022-11-21 16:53:29,969 INFO L131 PetriNetUnfolder]: For 110067/110067 co-relation queries the response was YES. [2022-11-21 16:53:30,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23703 conditions, 2243 events. 751/2243 cut-off events. For 110067/110067 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 17342 event pairs, 50 based on Foata normal form. 1/2241 useless extension candidates. Maximal degree in co-relation 23420. Up to 1687 conditions per place. [2022-11-21 16:53:30,029 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 894 selfloop transitions, 118 changer transitions 18/1069 dead transitions. [2022-11-21 16:53:30,030 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 799 places, 1069 transitions, 21590 flow [2022-11-21 16:53:30,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-21 16:53:30,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-21 16:53:30,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1841 transitions. [2022-11-21 16:53:30,032 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5595744680851064 [2022-11-21 16:53:30,032 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1841 transitions. [2022-11-21 16:53:30,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1841 transitions. [2022-11-21 16:53:30,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:53:30,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1841 transitions. [2022-11-21 16:53:30,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 52.6) internal successors, (1841), 35 states have internal predecessors, (1841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:30,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:30,036 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:30,036 INFO L175 Difference]: Start difference. First operand has 773 places, 1039 transitions, 19108 flow. Second operand 35 states and 1841 transitions. [2022-11-21 16:53:30,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 799 places, 1069 transitions, 21590 flow [2022-11-21 16:53:31,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 766 places, 1069 transitions, 21101 flow, removed 146 selfloop flow, removed 33 redundant places. [2022-11-21 16:53:31,339 INFO L231 Difference]: Finished difference. Result has 773 places, 1036 transitions, 18856 flow [2022-11-21 16:53:31,340 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=18633, PETRI_DIFFERENCE_MINUEND_PLACES=732, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1039, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=921, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=18856, PETRI_PLACES=773, PETRI_TRANSITIONS=1036} [2022-11-21 16:53:31,340 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 685 predicate places. [2022-11-21 16:53:31,340 INFO L495 AbstractCegarLoop]: Abstraction has has 773 places, 1036 transitions, 18856 flow [2022-11-21 16:53:31,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:31,341 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:53:31,341 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:53:31,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2022-11-21 16:53:31,341 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:53:31,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:53:31,341 INFO L85 PathProgramCache]: Analyzing trace with hash -907608988, now seen corresponding path program 178 times [2022-11-21 16:53:31,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:53:31,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999826817] [2022-11-21 16:53:31,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:53:31,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:53:31,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:53:31,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:53:31,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:53:31,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999826817] [2022-11-21 16:53:31,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999826817] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:53:31,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:53:31,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:53:31,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239030168] [2022-11-21 16:53:31,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:53:31,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:53:31,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:53:31,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:53:31,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:53:31,907 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:53:31,907 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 773 places, 1036 transitions, 18856 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:31,907 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:53:31,907 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:53:31,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:53:34,714 INFO L130 PetriNetUnfolder]: 769/2296 cut-off events. [2022-11-21 16:53:34,714 INFO L131 PetriNetUnfolder]: For 112103/112103 co-relation queries the response was YES. [2022-11-21 16:53:34,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24273 conditions, 2296 events. 769/2296 cut-off events. For 112103/112103 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 17861 event pairs, 46 based on Foata normal form. 1/2294 useless extension candidates. Maximal degree in co-relation 23991. Up to 1701 conditions per place. [2022-11-21 16:53:34,770 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 910 selfloop transitions, 149 changer transitions 21/1119 dead transitions. [2022-11-21 16:53:34,770 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 796 places, 1119 transitions, 22870 flow [2022-11-21 16:53:34,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-21 16:53:34,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-21 16:53:34,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1715 transitions. [2022-11-21 16:53:34,773 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5701462765957447 [2022-11-21 16:53:34,773 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1715 transitions. [2022-11-21 16:53:34,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1715 transitions. [2022-11-21 16:53:34,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:53:34,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1715 transitions. [2022-11-21 16:53:34,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 53.59375) internal successors, (1715), 32 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:34,776 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:34,776 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:34,776 INFO L175 Difference]: Start difference. First operand has 773 places, 1036 transitions, 18856 flow. Second operand 32 states and 1715 transitions. [2022-11-21 16:53:34,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 796 places, 1119 transitions, 22870 flow [2022-11-21 16:53:35,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 760 places, 1119 transitions, 22535 flow, removed 21 selfloop flow, removed 36 redundant places. [2022-11-21 16:53:36,012 INFO L231 Difference]: Finished difference. Result has 769 places, 1067 transitions, 19664 flow [2022-11-21 16:53:36,012 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=18541, PETRI_DIFFERENCE_MINUEND_PLACES=729, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1036, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=891, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=19664, PETRI_PLACES=769, PETRI_TRANSITIONS=1067} [2022-11-21 16:53:36,012 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 681 predicate places. [2022-11-21 16:53:36,012 INFO L495 AbstractCegarLoop]: Abstraction has has 769 places, 1067 transitions, 19664 flow [2022-11-21 16:53:36,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:36,013 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:53:36,013 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:53:36,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2022-11-21 16:53:36,013 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:53:36,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:53:36,013 INFO L85 PathProgramCache]: Analyzing trace with hash 515317298, now seen corresponding path program 179 times [2022-11-21 16:53:36,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:53:36,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959023342] [2022-11-21 16:53:36,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:53:36,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:53:36,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:53:36,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:53:36,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:53:36,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959023342] [2022-11-21 16:53:36,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959023342] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:53:36,550 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:53:36,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:53:36,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718556430] [2022-11-21 16:53:36,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:53:36,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:53:36,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:53:36,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:53:36,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:53:36,552 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:53:36,553 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 769 places, 1067 transitions, 19664 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:36,553 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:53:36,553 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:53:36,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:53:39,596 INFO L130 PetriNetUnfolder]: 764/2290 cut-off events. [2022-11-21 16:53:39,596 INFO L131 PetriNetUnfolder]: For 114913/114913 co-relation queries the response was YES. [2022-11-21 16:53:39,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24426 conditions, 2290 events. 764/2290 cut-off events. For 114913/114913 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 17772 event pairs, 45 based on Foata normal form. 1/2288 useless extension candidates. Maximal degree in co-relation 24143. Up to 1711 conditions per place. [2022-11-21 16:53:39,649 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 906 selfloop transitions, 150 changer transitions 20/1115 dead transitions. [2022-11-21 16:53:39,649 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 798 places, 1115 transitions, 22978 flow [2022-11-21 16:53:39,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-21 16:53:39,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-21 16:53:39,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1868 transitions. [2022-11-21 16:53:39,657 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5677811550151975 [2022-11-21 16:53:39,658 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1868 transitions. [2022-11-21 16:53:39,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1868 transitions. [2022-11-21 16:53:39,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:53:39,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1868 transitions. [2022-11-21 16:53:39,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 53.371428571428574) internal successors, (1868), 35 states have internal predecessors, (1868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:39,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:39,664 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:39,664 INFO L175 Difference]: Start difference. First operand has 769 places, 1067 transitions, 19664 flow. Second operand 35 states and 1868 transitions. [2022-11-21 16:53:39,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 798 places, 1115 transitions, 22978 flow [2022-11-21 16:53:40,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 774 places, 1115 transitions, 22342 flow, removed 240 selfloop flow, removed 24 redundant places. [2022-11-21 16:53:40,988 INFO L231 Difference]: Finished difference. Result has 784 places, 1076 transitions, 19782 flow [2022-11-21 16:53:40,989 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=19084, PETRI_DIFFERENCE_MINUEND_PLACES=740, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1067, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=922, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=19782, PETRI_PLACES=784, PETRI_TRANSITIONS=1076} [2022-11-21 16:53:40,989 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 696 predicate places. [2022-11-21 16:53:40,989 INFO L495 AbstractCegarLoop]: Abstraction has has 784 places, 1076 transitions, 19782 flow [2022-11-21 16:53:40,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:40,990 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:53:40,990 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:53:40,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2022-11-21 16:53:40,990 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:53:40,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:53:40,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1989530518, now seen corresponding path program 180 times [2022-11-21 16:53:40,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:53:40,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136954640] [2022-11-21 16:53:40,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:53:40,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:53:41,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:53:41,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:53:41,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:53:41,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136954640] [2022-11-21 16:53:41,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136954640] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:53:41,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:53:41,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:53:41,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094497527] [2022-11-21 16:53:41,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:53:41,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:53:41,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:53:41,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:53:41,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:53:41,526 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:53:41,526 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 784 places, 1076 transitions, 19782 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:41,526 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:53:41,526 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:53:41,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:53:44,553 INFO L130 PetriNetUnfolder]: 780/2308 cut-off events. [2022-11-21 16:53:44,553 INFO L131 PetriNetUnfolder]: For 119861/119861 co-relation queries the response was YES. [2022-11-21 16:53:44,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24975 conditions, 2308 events. 780/2308 cut-off events. For 119861/119861 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 17910 event pairs, 42 based on Foata normal form. 1/2306 useless extension candidates. Maximal degree in co-relation 24685. Up to 1653 conditions per place. [2022-11-21 16:53:44,771 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 887 selfloop transitions, 187 changer transitions 29/1142 dead transitions. [2022-11-21 16:53:44,772 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 812 places, 1142 transitions, 23570 flow [2022-11-21 16:53:44,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-21 16:53:44,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-21 16:53:44,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1858 transitions. [2022-11-21 16:53:44,774 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.564741641337386 [2022-11-21 16:53:44,774 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1858 transitions. [2022-11-21 16:53:44,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1858 transitions. [2022-11-21 16:53:44,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:53:44,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1858 transitions. [2022-11-21 16:53:44,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 53.08571428571429) internal successors, (1858), 35 states have internal predecessors, (1858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:44,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:44,778 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:44,778 INFO L175 Difference]: Start difference. First operand has 784 places, 1076 transitions, 19782 flow. Second operand 35 states and 1858 transitions. [2022-11-21 16:53:44,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 812 places, 1142 transitions, 23570 flow [2022-11-21 16:53:45,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 785 places, 1142 transitions, 22948 flow, removed 202 selfloop flow, removed 27 redundant places. [2022-11-21 16:53:46,010 INFO L231 Difference]: Finished difference. Result has 796 places, 1092 transitions, 20296 flow [2022-11-21 16:53:46,010 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=19186, PETRI_DIFFERENCE_MINUEND_PLACES=751, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1076, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=890, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=20296, PETRI_PLACES=796, PETRI_TRANSITIONS=1092} [2022-11-21 16:53:46,010 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 708 predicate places. [2022-11-21 16:53:46,011 INFO L495 AbstractCegarLoop]: Abstraction has has 796 places, 1092 transitions, 20296 flow [2022-11-21 16:53:46,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:46,011 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:53:46,011 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:53:46,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2022-11-21 16:53:46,011 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:53:46,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:53:46,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1403062422, now seen corresponding path program 181 times [2022-11-21 16:53:46,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:53:46,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398284022] [2022-11-21 16:53:46,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:53:46,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:53:46,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:53:46,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:53:46,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:53:46,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398284022] [2022-11-21 16:53:46,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398284022] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:53:46,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:53:46,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:53:46,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385031727] [2022-11-21 16:53:46,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:53:46,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:53:46,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:53:46,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:53:46,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:53:46,519 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:53:46,520 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 796 places, 1092 transitions, 20296 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:46,520 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:53:46,520 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:53:46,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:53:49,642 INFO L130 PetriNetUnfolder]: 765/2291 cut-off events. [2022-11-21 16:53:49,643 INFO L131 PetriNetUnfolder]: For 117160/117160 co-relation queries the response was YES. [2022-11-21 16:53:49,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24647 conditions, 2291 events. 765/2291 cut-off events. For 117160/117160 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 17895 event pairs, 41 based on Foata normal form. 1/2290 useless extension candidates. Maximal degree in co-relation 24355. Up to 1657 conditions per place. [2022-11-21 16:53:49,708 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 888 selfloop transitions, 169 changer transitions 30/1126 dead transitions. [2022-11-21 16:53:49,708 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 822 places, 1126 transitions, 22945 flow [2022-11-21 16:53:49,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-21 16:53:49,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-21 16:53:49,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1749 transitions. [2022-11-21 16:53:49,711 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5638297872340425 [2022-11-21 16:53:49,711 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1749 transitions. [2022-11-21 16:53:49,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1749 transitions. [2022-11-21 16:53:49,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:53:49,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1749 transitions. [2022-11-21 16:53:49,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 53.0) internal successors, (1749), 33 states have internal predecessors, (1749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:49,714 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:49,714 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:49,715 INFO L175 Difference]: Start difference. First operand has 796 places, 1092 transitions, 20296 flow. Second operand 33 states and 1749 transitions. [2022-11-21 16:53:49,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 822 places, 1126 transitions, 22945 flow [2022-11-21 16:53:51,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 794 places, 1126 transitions, 22417 flow, removed 158 selfloop flow, removed 28 redundant places. [2022-11-21 16:53:51,065 INFO L231 Difference]: Finished difference. Result has 801 places, 1077 transitions, 19783 flow [2022-11-21 16:53:51,066 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=19776, PETRI_DIFFERENCE_MINUEND_PLACES=762, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1092, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=923, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=19783, PETRI_PLACES=801, PETRI_TRANSITIONS=1077} [2022-11-21 16:53:51,066 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 713 predicate places. [2022-11-21 16:53:51,066 INFO L495 AbstractCegarLoop]: Abstraction has has 801 places, 1077 transitions, 19783 flow [2022-11-21 16:53:51,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:51,066 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:53:51,066 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:53:51,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2022-11-21 16:53:51,067 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:53:51,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:53:51,067 INFO L85 PathProgramCache]: Analyzing trace with hash -2055406876, now seen corresponding path program 182 times [2022-11-21 16:53:51,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:53:51,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115347444] [2022-11-21 16:53:51,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:53:51,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:53:51,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:53:51,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:53:51,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:53:51,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115347444] [2022-11-21 16:53:51,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115347444] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:53:51,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:53:51,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:53:51,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011205039] [2022-11-21 16:53:51,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:53:51,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:53:51,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:53:51,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:53:51,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:53:51,678 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:53:51,678 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 801 places, 1077 transitions, 19783 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:51,678 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:53:51,679 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:53:51,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:53:54,646 INFO L130 PetriNetUnfolder]: 753/2256 cut-off events. [2022-11-21 16:53:54,647 INFO L131 PetriNetUnfolder]: For 116775/116775 co-relation queries the response was YES. [2022-11-21 16:53:54,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24281 conditions, 2256 events. 753/2256 cut-off events. For 116775/116775 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 17481 event pairs, 46 based on Foata normal form. 1/2254 useless extension candidates. Maximal degree in co-relation 23987. Up to 1729 conditions per place. [2022-11-21 16:53:54,714 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 936 selfloop transitions, 113 changer transitions 22/1110 dead transitions. [2022-11-21 16:53:54,714 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 823 places, 1110 transitions, 22378 flow [2022-11-21 16:53:54,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-21 16:53:54,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-21 16:53:54,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1656 transitions. [2022-11-21 16:53:54,716 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5682910089224433 [2022-11-21 16:53:54,716 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1656 transitions. [2022-11-21 16:53:54,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1656 transitions. [2022-11-21 16:53:54,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:53:54,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1656 transitions. [2022-11-21 16:53:54,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 53.41935483870968) internal successors, (1656), 31 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:54,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:54,720 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:54,720 INFO L175 Difference]: Start difference. First operand has 801 places, 1077 transitions, 19783 flow. Second operand 31 states and 1656 transitions. [2022-11-21 16:53:54,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 823 places, 1110 transitions, 22378 flow [2022-11-21 16:53:56,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 788 places, 1110 transitions, 21807 flow, removed 39 selfloop flow, removed 35 redundant places. [2022-11-21 16:53:56,352 INFO L231 Difference]: Finished difference. Result has 796 places, 1070 transitions, 19443 flow [2022-11-21 16:53:56,353 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=19222, PETRI_DIFFERENCE_MINUEND_PLACES=758, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1077, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=964, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=19443, PETRI_PLACES=796, PETRI_TRANSITIONS=1070} [2022-11-21 16:53:56,353 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 708 predicate places. [2022-11-21 16:53:56,354 INFO L495 AbstractCegarLoop]: Abstraction has has 796 places, 1070 transitions, 19443 flow [2022-11-21 16:53:56,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:56,354 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:53:56,354 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:53:56,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2022-11-21 16:53:56,354 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:53:56,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:53:56,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1453290080, now seen corresponding path program 183 times [2022-11-21 16:53:56,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:53:56,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290151005] [2022-11-21 16:53:56,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:53:56,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:53:56,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:53:56,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:53:56,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:53:56,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290151005] [2022-11-21 16:53:56,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290151005] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:53:56,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:53:56,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:53:56,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111896277] [2022-11-21 16:53:56,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:53:56,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:53:56,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:53:56,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:53:56,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:53:56,904 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:53:56,905 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 796 places, 1070 transitions, 19443 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:56,905 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:53:56,905 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:53:56,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:54:00,347 INFO L130 PetriNetUnfolder]: 767/2286 cut-off events. [2022-11-21 16:54:00,347 INFO L131 PetriNetUnfolder]: For 117251/117251 co-relation queries the response was YES. [2022-11-21 16:54:00,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24522 conditions, 2286 events. 767/2286 cut-off events. For 117251/117251 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 17688 event pairs, 38 based on Foata normal form. 1/2285 useless extension candidates. Maximal degree in co-relation 24230. Up to 1506 conditions per place. [2022-11-21 16:54:00,412 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 830 selfloop transitions, 264 changer transitions 24/1157 dead transitions. [2022-11-21 16:54:00,412 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 826 places, 1157 transitions, 23529 flow [2022-11-21 16:54:00,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-21 16:54:00,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2022-11-21 16:54:00,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 2221 transitions. [2022-11-21 16:54:00,415 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5625633232016211 [2022-11-21 16:54:00,415 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 2221 transitions. [2022-11-21 16:54:00,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 2221 transitions. [2022-11-21 16:54:00,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:54:00,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 2221 transitions. [2022-11-21 16:54:00,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 52.88095238095238) internal successors, (2221), 42 states have internal predecessors, (2221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:54:00,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 94.0) internal successors, (4042), 43 states have internal predecessors, (4042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:54:00,420 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 94.0) internal successors, (4042), 43 states have internal predecessors, (4042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:54:00,420 INFO L175 Difference]: Start difference. First operand has 796 places, 1070 transitions, 19443 flow. Second operand 42 states and 2221 transitions. [2022-11-21 16:54:00,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 826 places, 1157 transitions, 23529 flow [2022-11-21 16:54:01,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 796 places, 1157 transitions, 23240 flow, removed 22 selfloop flow, removed 30 redundant places. [2022-11-21 16:54:01,846 INFO L231 Difference]: Finished difference. Result has 805 places, 1097 transitions, 20550 flow [2022-11-21 16:54:01,847 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=19180, PETRI_DIFFERENCE_MINUEND_PLACES=755, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1070, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=239, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=818, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=20550, PETRI_PLACES=805, PETRI_TRANSITIONS=1097} [2022-11-21 16:54:01,848 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 717 predicate places. [2022-11-21 16:54:01,848 INFO L495 AbstractCegarLoop]: Abstraction has has 805 places, 1097 transitions, 20550 flow [2022-11-21 16:54:01,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:54:01,848 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:54:01,849 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:54:01,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2022-11-21 16:54:01,849 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:54:01,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:54:01,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1113130446, now seen corresponding path program 184 times [2022-11-21 16:54:01,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:54:01,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025476741] [2022-11-21 16:54:01,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:54:01,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:54:01,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:54:02,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:54:02,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:54:02,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025476741] [2022-11-21 16:54:02,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025476741] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:54:02,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:54:02,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:54:02,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803647835] [2022-11-21 16:54:02,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:54:02,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:54:02,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:54:02,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:54:02,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:54:02,509 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:54:02,510 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 805 places, 1097 transitions, 20550 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:54:02,510 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:54:02,510 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:54:02,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:54:05,592 INFO L130 PetriNetUnfolder]: 759/2273 cut-off events. [2022-11-21 16:54:05,592 INFO L131 PetriNetUnfolder]: For 120444/120444 co-relation queries the response was YES. [2022-11-21 16:54:05,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24715 conditions, 2273 events. 759/2273 cut-off events. For 120444/120444 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 17633 event pairs, 48 based on Foata normal form. 1/2271 useless extension candidates. Maximal degree in co-relation 24423. Up to 1727 conditions per place. [2022-11-21 16:54:05,658 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 945 selfloop transitions, 123 changer transitions 21/1128 dead transitions. [2022-11-21 16:54:05,658 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 831 places, 1128 transitions, 23157 flow [2022-11-21 16:54:05,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-21 16:54:05,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-21 16:54:05,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1708 transitions. [2022-11-21 16:54:05,660 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5678191489361702 [2022-11-21 16:54:05,660 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1708 transitions. [2022-11-21 16:54:05,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1708 transitions. [2022-11-21 16:54:05,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:54:05,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1708 transitions. [2022-11-21 16:54:05,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 53.375) internal successors, (1708), 32 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:54:05,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:54:05,664 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:54:05,664 INFO L175 Difference]: Start difference. First operand has 805 places, 1097 transitions, 20550 flow. Second operand 32 states and 1708 transitions. [2022-11-21 16:54:05,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 831 places, 1128 transitions, 23157 flow [2022-11-21 16:54:07,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 801 places, 1128 transitions, 22643 flow, removed 161 selfloop flow, removed 30 redundant places. [2022-11-21 16:54:07,107 INFO L231 Difference]: Finished difference. Result has 809 places, 1090 transitions, 20292 flow [2022-11-21 16:54:07,107 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=20046, PETRI_DIFFERENCE_MINUEND_PLACES=770, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1097, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=974, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=20292, PETRI_PLACES=809, PETRI_TRANSITIONS=1090} [2022-11-21 16:54:07,107 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 721 predicate places. [2022-11-21 16:54:07,107 INFO L495 AbstractCegarLoop]: Abstraction has has 809 places, 1090 transitions, 20292 flow [2022-11-21 16:54:07,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:54:07,108 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:54:07,108 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:54:07,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2022-11-21 16:54:07,108 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:54:07,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:54:07,108 INFO L85 PathProgramCache]: Analyzing trace with hash -128343728, now seen corresponding path program 185 times [2022-11-21 16:54:07,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:54:07,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026043359] [2022-11-21 16:54:07,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:54:07,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:54:07,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:54:07,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:54:07,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:54:07,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026043359] [2022-11-21 16:54:07,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026043359] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:54:07,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:54:07,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:54:07,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886204125] [2022-11-21 16:54:07,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:54:07,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:54:07,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:54:07,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:54:07,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:54:07,667 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:54:07,667 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 809 places, 1090 transitions, 20292 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:54:07,667 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:54:07,667 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:54:07,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:54:11,048 INFO L130 PetriNetUnfolder]: 762/2284 cut-off events. [2022-11-21 16:54:11,048 INFO L131 PetriNetUnfolder]: For 110537/110537 co-relation queries the response was YES. [2022-11-21 16:54:11,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24410 conditions, 2284 events. 762/2284 cut-off events. For 110537/110537 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 17663 event pairs, 47 based on Foata normal form. 1/2282 useless extension candidates. Maximal degree in co-relation 24113. Up to 1682 conditions per place. [2022-11-21 16:54:11,115 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 890 selfloop transitions, 193 changer transitions 20/1142 dead transitions. [2022-11-21 16:54:11,115 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 838 places, 1142 transitions, 23768 flow [2022-11-21 16:54:11,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-21 16:54:11,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2022-11-21 16:54:11,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 2174 transitions. [2022-11-21 16:54:11,118 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5640892579138558 [2022-11-21 16:54:11,118 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 2174 transitions. [2022-11-21 16:54:11,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 2174 transitions. [2022-11-21 16:54:11,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:54:11,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 2174 transitions. [2022-11-21 16:54:11,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 53.02439024390244) internal successors, (2174), 41 states have internal predecessors, (2174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:54:11,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 94.0) internal successors, (3948), 42 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:54:11,122 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 94.0) internal successors, (3948), 42 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:54:11,122 INFO L175 Difference]: Start difference. First operand has 809 places, 1090 transitions, 20292 flow. Second operand 41 states and 2174 transitions. [2022-11-21 16:54:11,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 838 places, 1142 transitions, 23768 flow [2022-11-21 16:54:12,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 806 places, 1142 transitions, 23432 flow, removed 30 selfloop flow, removed 32 redundant places. [2022-11-21 16:54:12,588 INFO L231 Difference]: Finished difference. Result has 817 places, 1101 transitions, 20870 flow [2022-11-21 16:54:12,588 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=19994, PETRI_DIFFERENCE_MINUEND_PLACES=766, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1090, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=903, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=20870, PETRI_PLACES=817, PETRI_TRANSITIONS=1101} [2022-11-21 16:54:12,588 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 729 predicate places. [2022-11-21 16:54:12,589 INFO L495 AbstractCegarLoop]: Abstraction has has 817 places, 1101 transitions, 20870 flow [2022-11-21 16:54:12,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:54:12,589 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:54:12,589 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:54:12,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2022-11-21 16:54:12,589 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:54:12,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:54:12,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1481517968, now seen corresponding path program 186 times [2022-11-21 16:54:12,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:54:12,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205666523] [2022-11-21 16:54:12,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:54:12,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:54:12,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:54:13,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:54:13,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:54:13,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205666523] [2022-11-21 16:54:13,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205666523] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:54:13,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:54:13,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:54:13,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868884769] [2022-11-21 16:54:13,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:54:13,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:54:13,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:54:13,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:54:13,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:54:13,118 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:54:13,118 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 817 places, 1101 transitions, 20870 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:54:13,118 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:54:13,118 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:54:13,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:54:16,458 INFO L130 PetriNetUnfolder]: 771/2284 cut-off events. [2022-11-21 16:54:16,458 INFO L131 PetriNetUnfolder]: For 115339/115339 co-relation queries the response was YES. [2022-11-21 16:54:16,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24996 conditions, 2284 events. 771/2284 cut-off events. For 115339/115339 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 17704 event pairs, 46 based on Foata normal form. 1/2283 useless extension candidates. Maximal degree in co-relation 24698. Up to 1660 conditions per place. [2022-11-21 16:54:16,517 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 902 selfloop transitions, 187 changer transitions 30/1158 dead transitions. [2022-11-21 16:54:16,517 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 847 places, 1158 transitions, 24454 flow [2022-11-21 16:54:16,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-21 16:54:16,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-21 16:54:16,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1957 transitions. [2022-11-21 16:54:16,519 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5626797009775734 [2022-11-21 16:54:16,519 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1957 transitions. [2022-11-21 16:54:16,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1957 transitions. [2022-11-21 16:54:16,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:54:16,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1957 transitions. [2022-11-21 16:54:16,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 52.891891891891895) internal successors, (1957), 37 states have internal predecessors, (1957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:54:16,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:54:16,526 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:54:16,526 INFO L175 Difference]: Start difference. First operand has 817 places, 1101 transitions, 20870 flow. Second operand 37 states and 1957 transitions. [2022-11-21 16:54:16,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 847 places, 1158 transitions, 24454 flow [2022-11-21 16:54:17,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 816 places, 1158 transitions, 23828 flow, removed 180 selfloop flow, removed 31 redundant places. [2022-11-21 16:54:17,984 INFO L231 Difference]: Finished difference. Result has 826 places, 1107 transitions, 21120 flow [2022-11-21 16:54:17,984 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=20270, PETRI_DIFFERENCE_MINUEND_PLACES=780, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=915, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=21120, PETRI_PLACES=826, PETRI_TRANSITIONS=1107} [2022-11-21 16:54:17,984 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 738 predicate places. [2022-11-21 16:54:17,984 INFO L495 AbstractCegarLoop]: Abstraction has has 826 places, 1107 transitions, 21120 flow [2022-11-21 16:54:17,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:54:17,985 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:54:17,985 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:54:17,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2022-11-21 16:54:17,985 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:54:17,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:54:17,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1756791472, now seen corresponding path program 187 times [2022-11-21 16:54:17,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:54:17,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562773606] [2022-11-21 16:54:17,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:54:17,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:54:17,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:54:18,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:54:18,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:54:18,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562773606] [2022-11-21 16:54:18,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562773606] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:54:18,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:54:18,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:54:18,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410164452] [2022-11-21 16:54:18,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:54:18,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:54:18,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:54:18,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:54:18,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:54:18,524 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:54:18,525 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 826 places, 1107 transitions, 21120 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:54:18,525 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:54:18,525 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:54:18,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:54:21,818 INFO L130 PetriNetUnfolder]: 758/2264 cut-off events. [2022-11-21 16:54:21,818 INFO L131 PetriNetUnfolder]: For 108428/108428 co-relation queries the response was YES. [2022-11-21 16:54:21,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24494 conditions, 2264 events. 758/2264 cut-off events. For 108428/108428 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 17545 event pairs, 52 based on Foata normal form. 1/2262 useless extension candidates. Maximal degree in co-relation 24194. Up to 1698 conditions per place. [2022-11-21 16:54:21,881 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 929 selfloop transitions, 150 changer transitions 21/1139 dead transitions. [2022-11-21 16:54:21,881 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 854 places, 1139 transitions, 23775 flow [2022-11-21 16:54:21,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-21 16:54:21,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-21 16:54:21,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2015 transitions. [2022-11-21 16:54:21,883 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5641097424412094 [2022-11-21 16:54:21,884 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2015 transitions. [2022-11-21 16:54:21,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2015 transitions. [2022-11-21 16:54:21,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:54:21,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2015 transitions. [2022-11-21 16:54:21,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 53.026315789473685) internal successors, (2015), 38 states have internal predecessors, (2015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:54:21,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:54:21,887 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:54:21,888 INFO L175 Difference]: Start difference. First operand has 826 places, 1107 transitions, 21120 flow. Second operand 38 states and 2015 transitions. [2022-11-21 16:54:21,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 854 places, 1139 transitions, 23775 flow [2022-11-21 16:54:23,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 824 places, 1139 transitions, 23195 flow, removed 108 selfloop flow, removed 30 redundant places. [2022-11-21 16:54:23,516 INFO L231 Difference]: Finished difference. Result has 832 places, 1100 transitions, 20852 flow [2022-11-21 16:54:23,516 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=20552, PETRI_DIFFERENCE_MINUEND_PLACES=787, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=957, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=20852, PETRI_PLACES=832, PETRI_TRANSITIONS=1100} [2022-11-21 16:54:23,517 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 744 predicate places. [2022-11-21 16:54:23,517 INFO L495 AbstractCegarLoop]: Abstraction has has 832 places, 1100 transitions, 20852 flow [2022-11-21 16:54:23,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:54:23,517 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:54:23,517 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:54:23,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2022-11-21 16:54:23,517 INFO L420 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:54:23,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:54:23,518 INFO L85 PathProgramCache]: Analyzing trace with hash 185541212, now seen corresponding path program 188 times [2022-11-21 16:54:23,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:54:23,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45104127] [2022-11-21 16:54:23,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:54:23,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:54:23,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:54:24,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:54:24,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:54:24,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45104127] [2022-11-21 16:54:24,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45104127] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:54:24,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:54:24,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:54:24,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859132224] [2022-11-21 16:54:24,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:54:24,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:54:24,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:54:24,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:54:24,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:54:24,047 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:54:24,047 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 832 places, 1100 transitions, 20852 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:54:24,047 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:54:24,048 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:54:24,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:54:27,678 INFO L130 PetriNetUnfolder]: 800/2429 cut-off events. [2022-11-21 16:54:27,678 INFO L131 PetriNetUnfolder]: For 114538/114538 co-relation queries the response was YES. [2022-11-21 16:54:27,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25882 conditions, 2429 events. 800/2429 cut-off events. For 114538/114538 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 19283 event pairs, 44 based on Foata normal form. 1/2427 useless extension candidates. Maximal degree in co-relation 25582. Up to 1764 conditions per place. [2022-11-21 16:54:27,753 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 972 selfloop transitions, 183 changer transitions 21/1215 dead transitions. [2022-11-21 16:54:27,753 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 857 places, 1215 transitions, 25681 flow [2022-11-21 16:54:27,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-21 16:54:27,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-21 16:54:27,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1974 transitions. [2022-11-21 16:54:27,756 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5675675675675675 [2022-11-21 16:54:27,756 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1974 transitions. [2022-11-21 16:54:27,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1974 transitions. [2022-11-21 16:54:27,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:54:27,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1974 transitions. [2022-11-21 16:54:27,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 53.351351351351354) internal successors, (1974), 37 states have internal predecessors, (1974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:54:27,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:54:27,760 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:54:27,760 INFO L175 Difference]: Start difference. First operand has 832 places, 1100 transitions, 20852 flow. Second operand 37 states and 1974 transitions. [2022-11-21 16:54:27,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 857 places, 1215 transitions, 25681 flow [2022-11-21 16:54:29,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 818 places, 1215 transitions, 25275 flow, removed 24 selfloop flow, removed 39 redundant places. [2022-11-21 16:54:29,279 INFO L231 Difference]: Finished difference. Result has 830 places, 1166 transitions, 22597 flow [2022-11-21 16:54:29,280 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=20478, PETRI_DIFFERENCE_MINUEND_PLACES=782, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=929, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=22597, PETRI_PLACES=830, PETRI_TRANSITIONS=1166} [2022-11-21 16:54:29,280 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 742 predicate places. [2022-11-21 16:54:29,280 INFO L495 AbstractCegarLoop]: Abstraction has has 830 places, 1166 transitions, 22597 flow [2022-11-21 16:54:29,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:54:29,280 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:54:29,280 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:54:29,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2022-11-21 16:54:29,281 INFO L420 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:54:29,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:54:29,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1539390926, now seen corresponding path program 189 times [2022-11-21 16:54:29,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:54:29,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054336016] [2022-11-21 16:54:29,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:54:29,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:54:29,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:54:29,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:54:29,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:54:29,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054336016] [2022-11-21 16:54:29,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054336016] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:54:29,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:54:29,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-21 16:54:29,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847458474] [2022-11-21 16:54:29,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:54:29,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-21 16:54:29,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:54:29,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-21 16:54:29,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-21 16:54:29,848 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:54:29,849 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 830 places, 1166 transitions, 22597 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:54:29,849 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:54:29,849 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:54:29,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:54:33,120 INFO L130 PetriNetUnfolder]: 793/2422 cut-off events. [2022-11-21 16:54:33,120 INFO L131 PetriNetUnfolder]: For 119783/119783 co-relation queries the response was YES. [2022-11-21 16:54:33,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26055 conditions, 2422 events. 793/2422 cut-off events. For 119783/119783 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 19327 event pairs, 46 based on Foata normal form. 1/2421 useless extension candidates. Maximal degree in co-relation 25753. Up to 1840 conditions per place. [2022-11-21 16:54:33,187 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1032 selfloop transitions, 110 changer transitions 21/1202 dead transitions. [2022-11-21 16:54:33,187 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 860 places, 1202 transitions, 25621 flow [2022-11-21 16:54:33,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-21 16:54:33,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-21 16:54:33,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1939 transitions. [2022-11-21 16:54:33,190 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5575043128234618 [2022-11-21 16:54:33,190 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1939 transitions. [2022-11-21 16:54:33,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1939 transitions. [2022-11-21 16:54:33,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:54:33,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1939 transitions. [2022-11-21 16:54:33,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 52.4054054054054) internal successors, (1939), 37 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:54:33,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:54:33,194 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:54:33,194 INFO L175 Difference]: Start difference. First operand has 830 places, 1166 transitions, 22597 flow. Second operand 37 states and 1939 transitions. [2022-11-21 16:54:33,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 860 places, 1202 transitions, 25621 flow [2022-11-21 16:54:34,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 839 places, 1202 transitions, 24887 flow, removed 307 selfloop flow, removed 21 redundant places. [2022-11-21 16:54:34,714 INFO L231 Difference]: Finished difference. Result has 850 places, 1166 transitions, 22210 flow [2022-11-21 16:54:34,714 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=21867, PETRI_DIFFERENCE_MINUEND_PLACES=803, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1056, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=22210, PETRI_PLACES=850, PETRI_TRANSITIONS=1166} [2022-11-21 16:54:34,714 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 762 predicate places. [2022-11-21 16:54:34,714 INFO L495 AbstractCegarLoop]: Abstraction has has 850 places, 1166 transitions, 22210 flow [2022-11-21 16:54:34,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:54:34,715 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:54:34,715 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:54:34,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2022-11-21 16:54:34,715 INFO L420 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:54:34,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:54:34,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1415515106, now seen corresponding path program 190 times [2022-11-21 16:54:34,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:54:34,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981453081] [2022-11-21 16:54:34,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:54:34,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:54:34,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:54:35,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:54:35,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:54:35,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981453081] [2022-11-21 16:54:35,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981453081] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:54:35,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:54:35,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-21 16:54:35,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308794942] [2022-11-21 16:54:35,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:54:35,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-21 16:54:35,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:54:35,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-21 16:54:35,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-21 16:54:35,281 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:54:35,282 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 850 places, 1166 transitions, 22210 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:54:35,282 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:54:35,282 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:54:35,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:54:38,995 INFO L130 PetriNetUnfolder]: 785/2403 cut-off events. [2022-11-21 16:54:38,995 INFO L131 PetriNetUnfolder]: For 119360/119360 co-relation queries the response was YES. [2022-11-21 16:54:39,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25626 conditions, 2403 events. 785/2403 cut-off events. For 119360/119360 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 19132 event pairs, 47 based on Foata normal form. 1/2401 useless extension candidates. Maximal degree in co-relation 25314. Up to 1838 conditions per place. [2022-11-21 16:54:39,063 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1031 selfloop transitions, 79 changer transitions 40/1189 dead transitions. [2022-11-21 16:54:39,063 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 876 places, 1189 transitions, 24703 flow [2022-11-21 16:54:39,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-21 16:54:39,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-21 16:54:39,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1783 transitions. [2022-11-21 16:54:39,066 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5578848560700876 [2022-11-21 16:54:39,066 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1783 transitions. [2022-11-21 16:54:39,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1783 transitions. [2022-11-21 16:54:39,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:54:39,067 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1783 transitions. [2022-11-21 16:54:39,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 52.44117647058823) internal successors, (1783), 34 states have internal predecessors, (1783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:54:39,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:54:39,070 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:54:39,070 INFO L175 Difference]: Start difference. First operand has 850 places, 1166 transitions, 22210 flow. Second operand 34 states and 1783 transitions. [2022-11-21 16:54:39,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 876 places, 1189 transitions, 24703 flow [2022-11-21 16:54:40,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 842 places, 1189 transitions, 24397 flow, removed 53 selfloop flow, removed 34 redundant places. [2022-11-21 16:54:40,789 INFO L231 Difference]: Finished difference. Result has 846 places, 1135 transitions, 21279 flow [2022-11-21 16:54:40,789 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=21912, PETRI_DIFFERENCE_MINUEND_PLACES=809, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1087, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=21279, PETRI_PLACES=846, PETRI_TRANSITIONS=1135} [2022-11-21 16:54:40,789 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 758 predicate places. [2022-11-21 16:54:40,790 INFO L495 AbstractCegarLoop]: Abstraction has has 846 places, 1135 transitions, 21279 flow [2022-11-21 16:54:40,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:54:40,790 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:54:40,790 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:54:40,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2022-11-21 16:54:40,790 INFO L420 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:54:40,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:54:40,791 INFO L85 PathProgramCache]: Analyzing trace with hash -319262602, now seen corresponding path program 191 times [2022-11-21 16:54:40,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:54:40,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034159829] [2022-11-21 16:54:40,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:54:40,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:54:40,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:54:41,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:54:41,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:54:41,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034159829] [2022-11-21 16:54:41,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034159829] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:54:41,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:54:41,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:54:41,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544477681] [2022-11-21 16:54:41,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:54:41,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:54:41,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:54:41,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:54:41,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:54:41,377 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:54:41,378 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 846 places, 1135 transitions, 21279 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:54:41,378 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:54:41,378 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:54:41,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:54:45,092 INFO L130 PetriNetUnfolder]: 793/2413 cut-off events. [2022-11-21 16:54:45,092 INFO L131 PetriNetUnfolder]: For 121800/121800 co-relation queries the response was YES. [2022-11-21 16:54:45,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25708 conditions, 2413 events. 793/2413 cut-off events. For 121800/121800 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 19267 event pairs, 49 based on Foata normal form. 1/2411 useless extension candidates. Maximal degree in co-relation 25400. Up to 1817 conditions per place. [2022-11-21 16:54:45,168 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 995 selfloop transitions, 125 changer transitions 22/1181 dead transitions. [2022-11-21 16:54:45,168 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 859 places, 1181 transitions, 24699 flow [2022-11-21 16:54:45,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-21 16:54:45,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-21 16:54:45,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1954 transitions. [2022-11-21 16:54:45,171 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5618171362852213 [2022-11-21 16:54:45,171 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1954 transitions. [2022-11-21 16:54:45,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1954 transitions. [2022-11-21 16:54:45,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:54:45,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1954 transitions. [2022-11-21 16:54:45,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 52.810810810810814) internal successors, (1954), 37 states have internal predecessors, (1954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:54:45,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:54:45,178 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:54:45,178 INFO L175 Difference]: Start difference. First operand has 846 places, 1135 transitions, 21279 flow. Second operand 37 states and 1954 transitions. [2022-11-21 16:54:45,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 859 places, 1181 transitions, 24699 flow [2022-11-21 16:54:46,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 821 places, 1181 transitions, 24265 flow, removed 84 selfloop flow, removed 38 redundant places. [2022-11-21 16:54:46,874 INFO L231 Difference]: Finished difference. Result has 832 places, 1145 transitions, 21504 flow [2022-11-21 16:54:46,874 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=20861, PETRI_DIFFERENCE_MINUEND_PLACES=785, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1011, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=21504, PETRI_PLACES=832, PETRI_TRANSITIONS=1145} [2022-11-21 16:54:46,874 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 744 predicate places. [2022-11-21 16:54:46,874 INFO L495 AbstractCegarLoop]: Abstraction has has 832 places, 1145 transitions, 21504 flow [2022-11-21 16:54:46,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:54:46,875 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:54:46,875 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:54:46,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2022-11-21 16:54:46,875 INFO L420 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:54:46,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:54:46,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1361768090, now seen corresponding path program 192 times [2022-11-21 16:54:46,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:54:46,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572825274] [2022-11-21 16:54:46,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:54:46,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:54:46,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:54:47,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:54:47,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:54:47,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572825274] [2022-11-21 16:54:47,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572825274] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:54:47,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:54:47,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:54:47,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768490767] [2022-11-21 16:54:47,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:54:47,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:54:47,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:54:47,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:54:47,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:54:47,408 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:54:47,409 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 832 places, 1145 transitions, 21504 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:54:47,409 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:54:47,409 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:54:47,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:54:50,830 INFO L130 PetriNetUnfolder]: 787/2411 cut-off events. [2022-11-21 16:54:50,830 INFO L131 PetriNetUnfolder]: For 124172/124172 co-relation queries the response was YES. [2022-11-21 16:54:50,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25751 conditions, 2411 events. 787/2411 cut-off events. For 124172/124172 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 19285 event pairs, 48 based on Foata normal form. 1/2409 useless extension candidates. Maximal degree in co-relation 25445. Up to 1732 conditions per place. [2022-11-21 16:54:50,904 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 955 selfloop transitions, 179 changer transitions 28/1201 dead transitions. [2022-11-21 16:54:50,904 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 860 places, 1201 transitions, 25157 flow [2022-11-21 16:54:50,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-21 16:54:50,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-21 16:54:50,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1871 transitions. [2022-11-21 16:54:50,907 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.568693009118541 [2022-11-21 16:54:50,907 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1871 transitions. [2022-11-21 16:54:50,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1871 transitions. [2022-11-21 16:54:50,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:54:50,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1871 transitions. [2022-11-21 16:54:50,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 53.457142857142856) internal successors, (1871), 35 states have internal predecessors, (1871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:54:50,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:54:50,911 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:54:50,911 INFO L175 Difference]: Start difference. First operand has 832 places, 1145 transitions, 21504 flow. Second operand 35 states and 1871 transitions. [2022-11-21 16:54:50,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 860 places, 1201 transitions, 25157 flow [2022-11-21 16:54:52,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 829 places, 1201 transitions, 24752 flow, removed 116 selfloop flow, removed 31 redundant places. [2022-11-21 16:54:52,418 INFO L231 Difference]: Finished difference. Result has 836 places, 1146 transitions, 21794 flow [2022-11-21 16:54:52,419 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=21115, PETRI_DIFFERENCE_MINUEND_PLACES=795, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=970, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=21794, PETRI_PLACES=836, PETRI_TRANSITIONS=1146} [2022-11-21 16:54:52,419 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 748 predicate places. [2022-11-21 16:54:52,419 INFO L495 AbstractCegarLoop]: Abstraction has has 836 places, 1146 transitions, 21794 flow [2022-11-21 16:54:52,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:54:52,420 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:54:52,420 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:54:52,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2022-11-21 16:54:52,420 INFO L420 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:54:52,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:54:52,421 INFO L85 PathProgramCache]: Analyzing trace with hash -886615148, now seen corresponding path program 193 times [2022-11-21 16:54:52,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:54:52,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243877162] [2022-11-21 16:54:52,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:54:52,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:54:52,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:54:52,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:54:52,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:54:52,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243877162] [2022-11-21 16:54:52,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243877162] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:54:52,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:54:52,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:54:52,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702921357] [2022-11-21 16:54:52,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:54:52,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:54:52,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:54:52,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:54:52,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:54:52,947 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:54:52,947 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 836 places, 1146 transitions, 21794 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:54:52,947 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:54:52,947 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:54:52,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:54:56,283 INFO L130 PetriNetUnfolder]: 785/2379 cut-off events. [2022-11-21 16:54:56,283 INFO L131 PetriNetUnfolder]: For 127641/127641 co-relation queries the response was YES. [2022-11-21 16:54:56,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25954 conditions, 2379 events. 785/2379 cut-off events. For 127641/127641 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 18855 event pairs, 48 based on Foata normal form. 1/2377 useless extension candidates. Maximal degree in co-relation 25647. Up to 1755 conditions per place. [2022-11-21 16:54:56,354 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 988 selfloop transitions, 160 changer transitions 18/1205 dead transitions. [2022-11-21 16:54:56,355 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 864 places, 1205 transitions, 25781 flow [2022-11-21 16:54:56,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-21 16:54:56,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-21 16:54:56,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1817 transitions. [2022-11-21 16:54:56,357 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.568523153942428 [2022-11-21 16:54:56,357 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1817 transitions. [2022-11-21 16:54:56,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1817 transitions. [2022-11-21 16:54:56,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:54:56,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1817 transitions. [2022-11-21 16:54:56,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.44117647058823) internal successors, (1817), 34 states have internal predecessors, (1817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:54:56,361 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:54:56,361 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:54:56,361 INFO L175 Difference]: Start difference. First operand has 836 places, 1146 transitions, 21794 flow. Second operand 34 states and 1817 transitions. [2022-11-21 16:54:56,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 864 places, 1205 transitions, 25781 flow [2022-11-21 16:54:58,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 836 places, 1205 transitions, 25030 flow, removed 288 selfloop flow, removed 28 redundant places. [2022-11-21 16:54:58,039 INFO L231 Difference]: Finished difference. Result has 843 places, 1160 transitions, 22200 flow [2022-11-21 16:54:58,040 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=21317, PETRI_DIFFERENCE_MINUEND_PLACES=803, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=993, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=22200, PETRI_PLACES=843, PETRI_TRANSITIONS=1160} [2022-11-21 16:54:58,040 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 755 predicate places. [2022-11-21 16:54:58,040 INFO L495 AbstractCegarLoop]: Abstraction has has 843 places, 1160 transitions, 22200 flow [2022-11-21 16:54:58,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:54:58,041 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:54:58,041 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:54:58,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2022-11-21 16:54:58,041 INFO L420 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:54:58,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:54:58,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1194990230, now seen corresponding path program 194 times [2022-11-21 16:54:58,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:54:58,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277373527] [2022-11-21 16:54:58,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:54:58,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:54:58,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:54:58,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:54:58,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:54:58,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277373527] [2022-11-21 16:54:58,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277373527] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:54:58,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:54:58,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:54:58,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642204550] [2022-11-21 16:54:58,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:54:58,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:54:58,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:54:58,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:54:58,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:54:58,587 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:54:58,587 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 843 places, 1160 transitions, 22200 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:54:58,587 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:54:58,587 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:54:58,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:55:02,255 INFO L130 PetriNetUnfolder]: 784/2382 cut-off events. [2022-11-21 16:55:02,255 INFO L131 PetriNetUnfolder]: For 116847/116847 co-relation queries the response was YES. [2022-11-21 16:55:02,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25553 conditions, 2382 events. 784/2382 cut-off events. For 116847/116847 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 18876 event pairs, 50 based on Foata normal form. 1/2380 useless extension candidates. Maximal degree in co-relation 25243. Up to 1767 conditions per place. [2022-11-21 16:55:02,320 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1003 selfloop transitions, 140 changer transitions 21/1203 dead transitions. [2022-11-21 16:55:02,320 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 873 places, 1203 transitions, 25285 flow [2022-11-21 16:55:02,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-21 16:55:02,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-21 16:55:02,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1912 transitions. [2022-11-21 16:55:02,322 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5650118203309693 [2022-11-21 16:55:02,322 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1912 transitions. [2022-11-21 16:55:02,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1912 transitions. [2022-11-21 16:55:02,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:55:02,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1912 transitions. [2022-11-21 16:55:02,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 53.111111111111114) internal successors, (1912), 36 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:55:02,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:55:02,326 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:55:02,327 INFO L175 Difference]: Start difference. First operand has 843 places, 1160 transitions, 22200 flow. Second operand 36 states and 1912 transitions. [2022-11-21 16:55:02,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 873 places, 1203 transitions, 25285 flow [2022-11-21 16:55:03,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 847 places, 1203 transitions, 24752 flow, removed 170 selfloop flow, removed 26 redundant places. [2022-11-21 16:55:03,990 INFO L231 Difference]: Finished difference. Result has 858 places, 1160 transitions, 22019 flow [2022-11-21 16:55:03,990 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=21689, PETRI_DIFFERENCE_MINUEND_PLACES=812, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1021, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=22019, PETRI_PLACES=858, PETRI_TRANSITIONS=1160} [2022-11-21 16:55:03,991 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 770 predicate places. [2022-11-21 16:55:03,991 INFO L495 AbstractCegarLoop]: Abstraction has has 858 places, 1160 transitions, 22019 flow [2022-11-21 16:55:03,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:55:03,991 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:55:03,991 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:55:03,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2022-11-21 16:55:03,991 INFO L420 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:55:03,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:55:03,992 INFO L85 PathProgramCache]: Analyzing trace with hash -433775950, now seen corresponding path program 195 times [2022-11-21 16:55:03,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:55:03,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048655185] [2022-11-21 16:55:03,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:55:03,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:55:04,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:04,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:55:04,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:55:04,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048655185] [2022-11-21 16:55:04,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048655185] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:55:04,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:55:04,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-21 16:55:04,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19971273] [2022-11-21 16:55:04,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:55:04,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-21 16:55:04,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:55:04,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-21 16:55:04,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-11-21 16:55:04,514 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:55:04,515 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 858 places, 1160 transitions, 22019 flow. Second operand has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:55:04,515 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:55:04,515 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:55:04,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:55:07,948 INFO L130 PetriNetUnfolder]: 789/2395 cut-off events. [2022-11-21 16:55:07,948 INFO L131 PetriNetUnfolder]: For 117921/117921 co-relation queries the response was YES. [2022-11-21 16:55:08,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25787 conditions, 2395 events. 789/2395 cut-off events. For 117921/117921 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 19102 event pairs, 47 based on Foata normal form. 1/2393 useless extension candidates. Maximal degree in co-relation 25470. Up to 1824 conditions per place. [2022-11-21 16:55:08,023 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1030 selfloop transitions, 120 changer transitions 20/1209 dead transitions. [2022-11-21 16:55:08,023 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 882 places, 1209 transitions, 25571 flow [2022-11-21 16:55:08,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-21 16:55:08,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-21 16:55:08,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1817 transitions. [2022-11-21 16:55:08,026 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.568523153942428 [2022-11-21 16:55:08,026 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1817 transitions. [2022-11-21 16:55:08,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1817 transitions. [2022-11-21 16:55:08,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:55:08,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1817 transitions. [2022-11-21 16:55:08,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.44117647058823) internal successors, (1817), 34 states have internal predecessors, (1817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:55:08,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:55:08,030 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:55:08,030 INFO L175 Difference]: Start difference. First operand has 858 places, 1160 transitions, 22019 flow. Second operand 34 states and 1817 transitions. [2022-11-21 16:55:08,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 882 places, 1209 transitions, 25571 flow [2022-11-21 16:55:09,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 848 places, 1209 transitions, 25214 flow, removed 23 selfloop flow, removed 34 redundant places. [2022-11-21 16:55:10,017 INFO L231 Difference]: Finished difference. Result has 855 places, 1169 transitions, 22329 flow [2022-11-21 16:55:10,017 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=21680, PETRI_DIFFERENCE_MINUEND_PLACES=815, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1046, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=22329, PETRI_PLACES=855, PETRI_TRANSITIONS=1169} [2022-11-21 16:55:10,017 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 767 predicate places. [2022-11-21 16:55:10,017 INFO L495 AbstractCegarLoop]: Abstraction has has 855 places, 1169 transitions, 22329 flow [2022-11-21 16:55:10,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:55:10,018 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:55:10,018 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:55:10,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2022-11-21 16:55:10,018 INFO L420 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:55:10,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:55:10,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1708592440, now seen corresponding path program 196 times [2022-11-21 16:55:10,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:55:10,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444245367] [2022-11-21 16:55:10,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:55:10,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:55:10,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:10,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:55:10,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:55:10,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444245367] [2022-11-21 16:55:10,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444245367] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:55:10,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:55:10,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:55:10,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404235115] [2022-11-21 16:55:10,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:55:10,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:55:10,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:55:10,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:55:10,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:55:10,529 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:55:10,529 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 855 places, 1169 transitions, 22329 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:55:10,529 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:55:10,530 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:55:10,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:55:14,138 INFO L130 PetriNetUnfolder]: 794/2416 cut-off events. [2022-11-21 16:55:14,138 INFO L131 PetriNetUnfolder]: For 124711/124711 co-relation queries the response was YES. [2022-11-21 16:55:14,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26144 conditions, 2416 events. 794/2416 cut-off events. For 124711/124711 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 19301 event pairs, 44 based on Foata normal form. 1/2414 useless extension candidates. Maximal degree in co-relation 25830. Up to 1829 conditions per place. [2022-11-21 16:55:14,214 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1029 selfloop transitions, 133 changer transitions 22/1223 dead transitions. [2022-11-21 16:55:14,215 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 889 places, 1223 transitions, 26115 flow [2022-11-21 16:55:14,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-21 16:55:14,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-11-21 16:55:14,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 2121 transitions. [2022-11-21 16:55:14,217 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5640957446808511 [2022-11-21 16:55:14,217 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 2121 transitions. [2022-11-21 16:55:14,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 2121 transitions. [2022-11-21 16:55:14,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:55:14,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 2121 transitions. [2022-11-21 16:55:14,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 53.025) internal successors, (2121), 40 states have internal predecessors, (2121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:55:14,221 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 94.0) internal successors, (3854), 41 states have internal predecessors, (3854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:55:14,221 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 94.0) internal successors, (3854), 41 states have internal predecessors, (3854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:55:14,221 INFO L175 Difference]: Start difference. First operand has 855 places, 1169 transitions, 22329 flow. Second operand 40 states and 2121 transitions. [2022-11-21 16:55:14,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 889 places, 1223 transitions, 26115 flow [2022-11-21 16:55:16,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 862 places, 1223 transitions, 25647 flow, removed 145 selfloop flow, removed 27 redundant places. [2022-11-21 16:55:16,109 INFO L231 Difference]: Finished difference. Result has 874 places, 1182 transitions, 22713 flow [2022-11-21 16:55:16,109 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=21891, PETRI_DIFFERENCE_MINUEND_PLACES=823, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1042, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=22713, PETRI_PLACES=874, PETRI_TRANSITIONS=1182} [2022-11-21 16:55:16,110 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 786 predicate places. [2022-11-21 16:55:16,110 INFO L495 AbstractCegarLoop]: Abstraction has has 874 places, 1182 transitions, 22713 flow [2022-11-21 16:55:16,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:55:16,110 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:55:16,110 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:55:16,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2022-11-21 16:55:16,110 INFO L420 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:55:16,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:55:16,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1346733674, now seen corresponding path program 197 times [2022-11-21 16:55:16,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:55:16,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615183303] [2022-11-21 16:55:16,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:55:16,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:55:16,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:16,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:55:16,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:55:16,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615183303] [2022-11-21 16:55:16,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615183303] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:55:16,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:55:16,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:55:16,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276217141] [2022-11-21 16:55:16,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:55:16,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:55:16,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:55:16,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:55:16,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:55:16,626 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:55:16,626 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 874 places, 1182 transitions, 22713 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:55:16,627 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:55:16,627 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:55:16,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:55:20,027 INFO L130 PetriNetUnfolder]: 789/2402 cut-off events. [2022-11-21 16:55:20,027 INFO L131 PetriNetUnfolder]: For 123716/123716 co-relation queries the response was YES. [2022-11-21 16:55:20,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25988 conditions, 2402 events. 789/2402 cut-off events. For 123716/123716 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 19149 event pairs, 46 based on Foata normal form. 1/2400 useless extension candidates. Maximal degree in co-relation 25667. Up to 1827 conditions per place. [2022-11-21 16:55:20,102 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1032 selfloop transitions, 118 changer transitions 26/1215 dead transitions. [2022-11-21 16:55:20,102 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 904 places, 1215 transitions, 25600 flow [2022-11-21 16:55:20,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-21 16:55:20,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-21 16:55:20,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1963 transitions. [2022-11-21 16:55:20,104 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5644048303622772 [2022-11-21 16:55:20,104 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1963 transitions. [2022-11-21 16:55:20,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1963 transitions. [2022-11-21 16:55:20,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:55:20,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1963 transitions. [2022-11-21 16:55:20,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 53.054054054054056) internal successors, (1963), 37 states have internal predecessors, (1963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:55:20,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:55:20,108 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:55:20,109 INFO L175 Difference]: Start difference. First operand has 874 places, 1182 transitions, 22713 flow. Second operand 37 states and 1963 transitions. [2022-11-21 16:55:20,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 904 places, 1215 transitions, 25600 flow [2022-11-21 16:55:22,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 877 places, 1215 transitions, 24967 flow, removed 234 selfloop flow, removed 27 redundant places. [2022-11-21 16:55:22,133 INFO L231 Difference]: Finished difference. Result has 884 places, 1174 transitions, 22327 flow [2022-11-21 16:55:22,133 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=22146, PETRI_DIFFERENCE_MINUEND_PLACES=841, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1064, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=22327, PETRI_PLACES=884, PETRI_TRANSITIONS=1174} [2022-11-21 16:55:22,134 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 796 predicate places. [2022-11-21 16:55:22,134 INFO L495 AbstractCegarLoop]: Abstraction has has 884 places, 1174 transitions, 22327 flow [2022-11-21 16:55:22,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:55:22,134 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:55:22,134 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:55:22,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2022-11-21 16:55:22,134 INFO L420 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:55:22,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:55:22,135 INFO L85 PathProgramCache]: Analyzing trace with hash 537913260, now seen corresponding path program 198 times [2022-11-21 16:55:22,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:55:22,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389330861] [2022-11-21 16:55:22,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:55:22,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:55:22,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:22,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:55:22,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:55:22,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389330861] [2022-11-21 16:55:22,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389330861] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:55:22,622 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:55:22,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-21 16:55:22,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34795396] [2022-11-21 16:55:22,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:55:22,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-21 16:55:22,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:55:22,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-21 16:55:22,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-11-21 16:55:22,624 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:55:22,624 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 884 places, 1174 transitions, 22327 flow. Second operand has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:55:22,624 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:55:22,624 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:55:22,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:55:26,093 INFO L130 PetriNetUnfolder]: 800/2439 cut-off events. [2022-11-21 16:55:26,093 INFO L131 PetriNetUnfolder]: For 122422/122422 co-relation queries the response was YES. [2022-11-21 16:55:26,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26271 conditions, 2439 events. 800/2439 cut-off events. For 122422/122422 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 19548 event pairs, 44 based on Foata normal form. 1/2437 useless extension candidates. Maximal degree in co-relation 25949. Up to 1837 conditions per place. [2022-11-21 16:55:26,162 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1041 selfloop transitions, 130 changer transitions 29/1239 dead transitions. [2022-11-21 16:55:26,162 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 905 places, 1239 transitions, 26078 flow [2022-11-21 16:55:26,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-21 16:55:26,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-21 16:55:26,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1767 transitions. [2022-11-21 16:55:26,165 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5696324951644101 [2022-11-21 16:55:26,165 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1767 transitions. [2022-11-21 16:55:26,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1767 transitions. [2022-11-21 16:55:26,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:55:26,166 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1767 transitions. [2022-11-21 16:55:26,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 53.54545454545455) internal successors, (1767), 33 states have internal predecessors, (1767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:55:26,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:55:26,169 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:55:26,169 INFO L175 Difference]: Start difference. First operand has 884 places, 1174 transitions, 22327 flow. Second operand 33 states and 1767 transitions. [2022-11-21 16:55:26,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 905 places, 1239 transitions, 26078 flow [2022-11-21 16:55:28,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 866 places, 1239 transitions, 25733 flow, removed 27 selfloop flow, removed 39 redundant places. [2022-11-21 16:55:28,125 INFO L231 Difference]: Finished difference. Result has 876 places, 1191 transitions, 22821 flow [2022-11-21 16:55:28,125 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=22014, PETRI_DIFFERENCE_MINUEND_PLACES=834, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1047, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=22821, PETRI_PLACES=876, PETRI_TRANSITIONS=1191} [2022-11-21 16:55:28,126 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 788 predicate places. [2022-11-21 16:55:28,126 INFO L495 AbstractCegarLoop]: Abstraction has has 876 places, 1191 transitions, 22821 flow [2022-11-21 16:55:28,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:55:28,126 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:55:28,126 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:55:28,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2022-11-21 16:55:28,126 INFO L420 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:55:28,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:55:28,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1249135654, now seen corresponding path program 199 times [2022-11-21 16:55:28,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:55:28,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545752174] [2022-11-21 16:55:28,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:55:28,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:55:28,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:28,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:55:28,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:55:28,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545752174] [2022-11-21 16:55:28,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545752174] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:55:28,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:55:28,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:55:28,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353713205] [2022-11-21 16:55:28,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:55:28,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:55:28,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:55:28,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:55:28,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:55:28,647 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:55:28,647 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 876 places, 1191 transitions, 22821 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:55:28,648 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:55:28,648 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:55:28,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:55:32,258 INFO L130 PetriNetUnfolder]: 794/2423 cut-off events. [2022-11-21 16:55:32,258 INFO L131 PetriNetUnfolder]: For 122162/122162 co-relation queries the response was YES. [2022-11-21 16:55:32,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26198 conditions, 2423 events. 794/2423 cut-off events. For 122162/122162 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 19391 event pairs, 40 based on Foata normal form. 1/2421 useless extension candidates. Maximal degree in co-relation 25876. Up to 1756 conditions per place. [2022-11-21 16:55:32,525 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 989 selfloop transitions, 174 changer transitions 33/1235 dead transitions. [2022-11-21 16:55:32,526 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 905 places, 1235 transitions, 26109 flow [2022-11-21 16:55:32,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-21 16:55:32,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-21 16:55:32,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2020 transitions. [2022-11-21 16:55:32,528 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5655095184770437 [2022-11-21 16:55:32,529 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2020 transitions. [2022-11-21 16:55:32,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2020 transitions. [2022-11-21 16:55:32,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:55:32,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2020 transitions. [2022-11-21 16:55:32,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 53.1578947368421) internal successors, (2020), 38 states have internal predecessors, (2020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:55:32,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:55:32,533 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:55:32,533 INFO L175 Difference]: Start difference. First operand has 876 places, 1191 transitions, 22821 flow. Second operand 38 states and 2020 transitions. [2022-11-21 16:55:32,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 905 places, 1235 transitions, 26109 flow [2022-11-21 16:55:34,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 881 places, 1235 transitions, 25718 flow, removed 103 selfloop flow, removed 24 redundant places. [2022-11-21 16:55:34,406 INFO L231 Difference]: Finished difference. Result has 891 places, 1186 transitions, 22871 flow [2022-11-21 16:55:34,407 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=22456, PETRI_DIFFERENCE_MINUEND_PLACES=844, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1021, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=22871, PETRI_PLACES=891, PETRI_TRANSITIONS=1186} [2022-11-21 16:55:34,407 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 803 predicate places. [2022-11-21 16:55:34,408 INFO L495 AbstractCegarLoop]: Abstraction has has 891 places, 1186 transitions, 22871 flow [2022-11-21 16:55:34,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:55:34,408 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:55:34,408 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:55:34,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2022-11-21 16:55:34,409 INFO L420 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:55:34,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:55:34,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1049249256, now seen corresponding path program 200 times [2022-11-21 16:55:34,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:55:34,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031281278] [2022-11-21 16:55:34,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:55:34,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:55:34,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:34,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:55:34,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:55:34,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031281278] [2022-11-21 16:55:34,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031281278] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:55:34,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:55:34,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:55:34,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954872283] [2022-11-21 16:55:34,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:55:34,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:55:34,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:55:34,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:55:34,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:55:34,965 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:55:34,966 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 891 places, 1186 transitions, 22871 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:55:34,966 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:55:34,966 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:55:34,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:55:38,445 INFO L130 PetriNetUnfolder]: 780/2385 cut-off events. [2022-11-21 16:55:38,446 INFO L131 PetriNetUnfolder]: For 117469/117469 co-relation queries the response was YES. [2022-11-21 16:55:38,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25781 conditions, 2385 events. 780/2385 cut-off events. For 117469/117469 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 18980 event pairs, 43 based on Foata normal form. 1/2383 useless extension candidates. Maximal degree in co-relation 25454. Up to 1828 conditions per place. [2022-11-21 16:55:38,524 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1048 selfloop transitions, 115 changer transitions 18/1220 dead transitions. [2022-11-21 16:55:38,524 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 913 places, 1220 transitions, 25651 flow [2022-11-21 16:55:38,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-21 16:55:38,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-21 16:55:38,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1703 transitions. [2022-11-21 16:55:38,526 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.566156914893617 [2022-11-21 16:55:38,527 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1703 transitions. [2022-11-21 16:55:38,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1703 transitions. [2022-11-21 16:55:38,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:55:38,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1703 transitions. [2022-11-21 16:55:38,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 53.21875) internal successors, (1703), 32 states have internal predecessors, (1703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:55:38,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:55:38,531 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:55:38,531 INFO L175 Difference]: Start difference. First operand has 891 places, 1186 transitions, 22871 flow. Second operand 32 states and 1703 transitions. [2022-11-21 16:55:38,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 913 places, 1220 transitions, 25651 flow [2022-11-21 16:55:40,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 878 places, 1220 transitions, 25104 flow, removed 70 selfloop flow, removed 35 redundant places. [2022-11-21 16:55:40,461 INFO L231 Difference]: Finished difference. Result has 886 places, 1185 transitions, 22621 flow [2022-11-21 16:55:40,461 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=22344, PETRI_DIFFERENCE_MINUEND_PLACES=847, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1071, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=22621, PETRI_PLACES=886, PETRI_TRANSITIONS=1185} [2022-11-21 16:55:40,462 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 798 predicate places. [2022-11-21 16:55:40,462 INFO L495 AbstractCegarLoop]: Abstraction has has 886 places, 1185 transitions, 22621 flow [2022-11-21 16:55:40,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:55:40,462 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:55:40,462 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:55:40,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2022-11-21 16:55:40,463 INFO L420 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:55:40,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:55:40,463 INFO L85 PathProgramCache]: Analyzing trace with hash 239049674, now seen corresponding path program 201 times [2022-11-21 16:55:40,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:55:40,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285960760] [2022-11-21 16:55:40,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:55:40,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:55:40,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:41,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:55:41,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:55:41,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285960760] [2022-11-21 16:55:41,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285960760] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:55:41,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:55:41,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:55:41,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215727228] [2022-11-21 16:55:41,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:55:41,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:55:41,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:55:41,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:55:41,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:55:41,046 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:55:41,047 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 886 places, 1185 transitions, 22621 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:55:41,047 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:55:41,047 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:55:41,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:55:44,756 INFO L130 PetriNetUnfolder]: 803/2504 cut-off events. [2022-11-21 16:55:44,756 INFO L131 PetriNetUnfolder]: For 117687/117687 co-relation queries the response was YES. [2022-11-21 16:55:44,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26489 conditions, 2504 events. 803/2504 cut-off events. For 117687/117687 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 20353 event pairs, 46 based on Foata normal form. 1/2502 useless extension candidates. Maximal degree in co-relation 26164. Up to 1692 conditions per place. [2022-11-21 16:55:44,836 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 960 selfloop transitions, 226 changer transitions 52/1277 dead transitions. [2022-11-21 16:55:44,836 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 914 places, 1277 transitions, 27240 flow [2022-11-21 16:55:44,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-21 16:55:44,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-21 16:55:44,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1856 transitions. [2022-11-21 16:55:44,839 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5641337386018237 [2022-11-21 16:55:44,839 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1856 transitions. [2022-11-21 16:55:44,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1856 transitions. [2022-11-21 16:55:44,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:55:44,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1856 transitions. [2022-11-21 16:55:44,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 53.02857142857143) internal successors, (1856), 35 states have internal predecessors, (1856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:55:44,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:55:44,845 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:55:44,845 INFO L175 Difference]: Start difference. First operand has 886 places, 1185 transitions, 22621 flow. Second operand 35 states and 1856 transitions. [2022-11-21 16:55:44,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 914 places, 1277 transitions, 27240 flow [2022-11-21 16:55:46,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 882 places, 1277 transitions, 26846 flow, removed 48 selfloop flow, removed 32 redundant places. [2022-11-21 16:55:46,941 INFO L231 Difference]: Finished difference. Result has 891 places, 1200 transitions, 23604 flow [2022-11-21 16:55:46,942 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=22251, PETRI_DIFFERENCE_MINUEND_PLACES=848, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=201, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=966, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=23604, PETRI_PLACES=891, PETRI_TRANSITIONS=1200} [2022-11-21 16:55:46,942 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 803 predicate places. [2022-11-21 16:55:46,942 INFO L495 AbstractCegarLoop]: Abstraction has has 891 places, 1200 transitions, 23604 flow [2022-11-21 16:55:46,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:55:46,943 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:55:46,943 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:55:46,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2022-11-21 16:55:46,943 INFO L420 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:55:46,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:55:46,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1544945088, now seen corresponding path program 202 times [2022-11-21 16:55:46,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:55:46,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490534458] [2022-11-21 16:55:46,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:55:46,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:55:46,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:47,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:55:47,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:55:47,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490534458] [2022-11-21 16:55:47,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490534458] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:55:47,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:55:47,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-21 16:55:47,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857222169] [2022-11-21 16:55:47,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:55:47,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-21 16:55:47,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:55:47,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-21 16:55:47,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-21 16:55:47,527 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:55:47,528 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 891 places, 1200 transitions, 23604 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:55:47,528 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:55:47,528 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:55:47,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:55:52,137 INFO L130 PetriNetUnfolder]: 849/2666 cut-off events. [2022-11-21 16:55:52,137 INFO L131 PetriNetUnfolder]: For 139921/139921 co-relation queries the response was YES. [2022-11-21 16:55:52,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28875 conditions, 2666 events. 849/2666 cut-off events. For 139921/139921 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 22204 event pairs, 41 based on Foata normal form. 1/2664 useless extension candidates. Maximal degree in co-relation 28549. Up to 1756 conditions per place. [2022-11-21 16:55:52,215 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1015 selfloop transitions, 286 changer transitions 33/1373 dead transitions. [2022-11-21 16:55:52,216 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 934 places, 1373 transitions, 30574 flow [2022-11-21 16:55:52,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-21 16:55:52,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2022-11-21 16:55:52,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 2631 transitions. [2022-11-21 16:55:52,219 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5597872340425532 [2022-11-21 16:55:52,219 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 2631 transitions. [2022-11-21 16:55:52,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 2631 transitions. [2022-11-21 16:55:52,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:55:52,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 2631 transitions. [2022-11-21 16:55:52,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 52.62) internal successors, (2631), 50 states have internal predecessors, (2631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:55:52,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 94.0) internal successors, (4794), 51 states have internal predecessors, (4794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:55:52,224 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 94.0) internal successors, (4794), 51 states have internal predecessors, (4794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:55:52,224 INFO L175 Difference]: Start difference. First operand has 891 places, 1200 transitions, 23604 flow. Second operand 50 states and 2631 transitions. [2022-11-21 16:55:52,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 934 places, 1373 transitions, 30574 flow [2022-11-21 16:55:54,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 909 places, 1373 transitions, 29738 flow, removed 291 selfloop flow, removed 25 redundant places. [2022-11-21 16:55:54,475 INFO L231 Difference]: Finished difference. Result has 921 places, 1296 transitions, 26137 flow [2022-11-21 16:55:54,475 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=22845, PETRI_DIFFERENCE_MINUEND_PLACES=860, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=195, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=925, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=26137, PETRI_PLACES=921, PETRI_TRANSITIONS=1296} [2022-11-21 16:55:54,475 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 833 predicate places. [2022-11-21 16:55:54,476 INFO L495 AbstractCegarLoop]: Abstraction has has 921 places, 1296 transitions, 26137 flow [2022-11-21 16:55:54,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:55:54,476 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:55:54,476 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:55:54,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2022-11-21 16:55:54,476 INFO L420 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:55:54,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:55:54,476 INFO L85 PathProgramCache]: Analyzing trace with hash 649497290, now seen corresponding path program 203 times [2022-11-21 16:55:54,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:55:54,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051957874] [2022-11-21 16:55:54,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:55:54,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:55:54,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:55,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:55:55,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:55:55,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051957874] [2022-11-21 16:55:55,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051957874] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:55:55,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:55:55,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:55:55,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735327418] [2022-11-21 16:55:55,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:55:55,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:55:55,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:55:55,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:55:55,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:55:55,027 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:55:55,028 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 921 places, 1296 transitions, 26137 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:55:55,028 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:55:55,028 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:55:55,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:55:58,790 INFO L130 PetriNetUnfolder]: 831/2654 cut-off events. [2022-11-21 16:55:58,790 INFO L131 PetriNetUnfolder]: For 143593/143593 co-relation queries the response was YES. [2022-11-21 16:55:58,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29102 conditions, 2654 events. 831/2654 cut-off events. For 143593/143593 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 22242 event pairs, 45 based on Foata normal form. 1/2651 useless extension candidates. Maximal degree in co-relation 28768. Up to 1837 conditions per place. [2022-11-21 16:55:58,877 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1072 selfloop transitions, 222 changer transitions 29/1362 dead transitions. [2022-11-21 16:55:58,877 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 946 places, 1362 transitions, 30576 flow [2022-11-21 16:55:58,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-21 16:55:58,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-21 16:55:58,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1704 transitions. [2022-11-21 16:55:58,879 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5664893617021277 [2022-11-21 16:55:58,879 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1704 transitions. [2022-11-21 16:55:58,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1704 transitions. [2022-11-21 16:55:58,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:55:58,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1704 transitions. [2022-11-21 16:55:58,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 53.25) internal successors, (1704), 32 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:55:58,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:55:58,883 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:55:58,883 INFO L175 Difference]: Start difference. First operand has 921 places, 1296 transitions, 26137 flow. Second operand 32 states and 1704 transitions. [2022-11-21 16:55:58,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 946 places, 1362 transitions, 30576 flow [2022-11-21 16:56:01,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 913 places, 1362 transitions, 29560 flow, removed 385 selfloop flow, removed 33 redundant places. [2022-11-21 16:56:01,405 INFO L231 Difference]: Finished difference. Result has 920 places, 1310 transitions, 26299 flow [2022-11-21 16:56:01,405 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=25187, PETRI_DIFFERENCE_MINUEND_PLACES=882, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=208, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1082, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=26299, PETRI_PLACES=920, PETRI_TRANSITIONS=1310} [2022-11-21 16:56:01,405 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 832 predicate places. [2022-11-21 16:56:01,406 INFO L495 AbstractCegarLoop]: Abstraction has has 920 places, 1310 transitions, 26299 flow [2022-11-21 16:56:01,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:01,406 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:56:01,406 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:56:01,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2022-11-21 16:56:01,406 INFO L420 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:56:01,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:56:01,407 INFO L85 PathProgramCache]: Analyzing trace with hash -799570080, now seen corresponding path program 204 times [2022-11-21 16:56:01,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:56:01,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448116871] [2022-11-21 16:56:01,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:56:01,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:56:01,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:01,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:56:01,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:56:01,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448116871] [2022-11-21 16:56:01,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448116871] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:56:01,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:56:01,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:56:01,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776458417] [2022-11-21 16:56:01,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:56:01,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:56:01,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:56:01,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:56:01,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:56:01,927 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:56:01,928 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 920 places, 1310 transitions, 26299 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:01,928 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:56:01,928 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:56:01,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:56:05,808 INFO L130 PetriNetUnfolder]: 831/2645 cut-off events. [2022-11-21 16:56:05,809 INFO L131 PetriNetUnfolder]: For 145665/145665 co-relation queries the response was YES. [2022-11-21 16:56:05,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29041 conditions, 2645 events. 831/2645 cut-off events. For 145665/145665 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 22133 event pairs, 44 based on Foata normal form. 1/2642 useless extension candidates. Maximal degree in co-relation 28701. Up to 1817 conditions per place. [2022-11-21 16:56:05,895 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1045 selfloop transitions, 245 changer transitions 30/1359 dead transitions. [2022-11-21 16:56:05,896 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 947 places, 1359 transitions, 30238 flow [2022-11-21 16:56:05,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-21 16:56:05,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-21 16:56:05,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1756 transitions. [2022-11-21 16:56:05,898 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.56608639587363 [2022-11-21 16:56:05,898 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1756 transitions. [2022-11-21 16:56:05,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1756 transitions. [2022-11-21 16:56:05,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:56:05,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1756 transitions. [2022-11-21 16:56:05,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 53.21212121212121) internal successors, (1756), 33 states have internal predecessors, (1756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:05,902 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:05,902 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:05,902 INFO L175 Difference]: Start difference. First operand has 920 places, 1310 transitions, 26299 flow. Second operand 33 states and 1756 transitions. [2022-11-21 16:56:05,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 947 places, 1359 transitions, 30238 flow [2022-11-21 16:56:08,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 920 places, 1359 transitions, 29324 flow, removed 288 selfloop flow, removed 27 redundant places. [2022-11-21 16:56:08,471 INFO L231 Difference]: Finished difference. Result has 927 places, 1306 transitions, 26080 flow [2022-11-21 16:56:08,472 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=25503, PETRI_DIFFERENCE_MINUEND_PLACES=888, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=243, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1066, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=26080, PETRI_PLACES=927, PETRI_TRANSITIONS=1306} [2022-11-21 16:56:08,472 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 839 predicate places. [2022-11-21 16:56:08,472 INFO L495 AbstractCegarLoop]: Abstraction has has 927 places, 1306 transitions, 26080 flow [2022-11-21 16:56:08,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:08,473 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:56:08,473 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:56:08,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2022-11-21 16:56:08,473 INFO L420 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:56:08,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:56:08,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1620891696, now seen corresponding path program 205 times [2022-11-21 16:56:08,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:56:08,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151731436] [2022-11-21 16:56:08,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:56:08,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:56:08,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:09,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:56:09,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:56:09,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151731436] [2022-11-21 16:56:09,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151731436] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:56:09,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:56:09,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:56:09,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218499997] [2022-11-21 16:56:09,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:56:09,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:56:09,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:56:09,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:56:09,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:56:09,027 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:56:09,028 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 927 places, 1306 transitions, 26080 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:09,028 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:56:09,028 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:56:09,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:56:12,904 INFO L130 PetriNetUnfolder]: 821/2617 cut-off events. [2022-11-21 16:56:12,904 INFO L131 PetriNetUnfolder]: For 130487/130487 co-relation queries the response was YES. [2022-11-21 16:56:12,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28319 conditions, 2617 events. 821/2617 cut-off events. For 130487/130487 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 21864 event pairs, 45 based on Foata normal form. 1/2614 useless extension candidates. Maximal degree in co-relation 27977. Up to 1894 conditions per place. [2022-11-21 16:56:12,988 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1108 selfloop transitions, 174 changer transitions 25/1346 dead transitions. [2022-11-21 16:56:12,989 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 956 places, 1346 transitions, 29710 flow [2022-11-21 16:56:12,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-21 16:56:12,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-21 16:56:12,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1851 transitions. [2022-11-21 16:56:12,991 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5626139817629179 [2022-11-21 16:56:12,991 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1851 transitions. [2022-11-21 16:56:12,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1851 transitions. [2022-11-21 16:56:12,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:56:12,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1851 transitions. [2022-11-21 16:56:12,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 52.885714285714286) internal successors, (1851), 35 states have internal predecessors, (1851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:12,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:12,995 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:12,995 INFO L175 Difference]: Start difference. First operand has 927 places, 1306 transitions, 26080 flow. Second operand 35 states and 1851 transitions. [2022-11-21 16:56:12,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 956 places, 1346 transitions, 29710 flow [2022-11-21 16:56:15,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 927 places, 1346 transitions, 29199 flow, removed 87 selfloop flow, removed 29 redundant places. [2022-11-21 16:56:15,468 INFO L231 Difference]: Finished difference. Result has 934 places, 1300 transitions, 25969 flow [2022-11-21 16:56:15,469 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=25587, PETRI_DIFFERENCE_MINUEND_PLACES=893, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=25969, PETRI_PLACES=934, PETRI_TRANSITIONS=1300} [2022-11-21 16:56:15,470 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 846 predicate places. [2022-11-21 16:56:15,470 INFO L495 AbstractCegarLoop]: Abstraction has has 934 places, 1300 transitions, 25969 flow [2022-11-21 16:56:15,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:15,470 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:56:15,470 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:56:15,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2022-11-21 16:56:15,470 INFO L420 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:56:15,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:56:15,471 INFO L85 PathProgramCache]: Analyzing trace with hash 416315876, now seen corresponding path program 206 times [2022-11-21 16:56:15,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:56:15,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188426946] [2022-11-21 16:56:15,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:56:15,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:56:15,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:16,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:56:16,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:56:16,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188426946] [2022-11-21 16:56:16,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188426946] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:56:16,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:56:16,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:56:16,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477887473] [2022-11-21 16:56:16,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:56:16,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:56:16,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:56:16,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:56:16,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:56:16,031 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:56:16,031 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 934 places, 1300 transitions, 25969 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:16,031 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:56:16,031 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:56:16,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:56:20,130 INFO L130 PetriNetUnfolder]: 813/2605 cut-off events. [2022-11-21 16:56:20,130 INFO L131 PetriNetUnfolder]: For 128117/128117 co-relation queries the response was YES. [2022-11-21 16:56:20,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28031 conditions, 2605 events. 813/2605 cut-off events. For 128117/128117 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 21807 event pairs, 41 based on Foata normal form. 1/2603 useless extension candidates. Maximal degree in co-relation 27689. Up to 1905 conditions per place. [2022-11-21 16:56:20,205 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1124 selfloop transitions, 157 changer transitions 20/1340 dead transitions. [2022-11-21 16:56:20,206 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 962 places, 1340 transitions, 29318 flow [2022-11-21 16:56:20,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-21 16:56:20,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-21 16:56:20,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1945 transitions. [2022-11-21 16:56:20,208 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5592294422081656 [2022-11-21 16:56:20,208 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1945 transitions. [2022-11-21 16:56:20,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1945 transitions. [2022-11-21 16:56:20,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:56:20,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1945 transitions. [2022-11-21 16:56:20,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 52.567567567567565) internal successors, (1945), 37 states have internal predecessors, (1945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:20,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:20,213 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:20,213 INFO L175 Difference]: Start difference. First operand has 934 places, 1300 transitions, 25969 flow. Second operand 37 states and 1945 transitions. [2022-11-21 16:56:20,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 962 places, 1340 transitions, 29318 flow [2022-11-21 16:56:22,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 928 places, 1340 transitions, 28785 flow, removed 85 selfloop flow, removed 34 redundant places. [2022-11-21 16:56:22,628 INFO L231 Difference]: Finished difference. Result has 935 places, 1301 transitions, 25900 flow [2022-11-21 16:56:22,629 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=25466, PETRI_DIFFERENCE_MINUEND_PLACES=892, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=25900, PETRI_PLACES=935, PETRI_TRANSITIONS=1301} [2022-11-21 16:56:22,629 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 847 predicate places. [2022-11-21 16:56:22,629 INFO L495 AbstractCegarLoop]: Abstraction has has 935 places, 1301 transitions, 25900 flow [2022-11-21 16:56:22,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:22,629 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:56:22,630 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:56:22,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2022-11-21 16:56:22,630 INFO L420 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:56:22,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:56:22,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1214989986, now seen corresponding path program 207 times [2022-11-21 16:56:22,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:56:22,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741987524] [2022-11-21 16:56:22,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:56:22,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:56:22,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:23,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:56:23,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:56:23,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741987524] [2022-11-21 16:56:23,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741987524] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:56:23,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:56:23,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:56:23,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438686023] [2022-11-21 16:56:23,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:56:23,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:56:23,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:56:23,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:56:23,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:56:23,207 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:56:23,208 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 935 places, 1301 transitions, 25900 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:23,208 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:56:23,208 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:56:23,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:56:27,284 INFO L130 PetriNetUnfolder]: 807/2594 cut-off events. [2022-11-21 16:56:27,284 INFO L131 PetriNetUnfolder]: For 125425/125425 co-relation queries the response was YES. [2022-11-21 16:56:27,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27822 conditions, 2594 events. 807/2594 cut-off events. For 125425/125425 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 21772 event pairs, 38 based on Foata normal form. 1/2593 useless extension candidates. Maximal degree in co-relation 27480. Up to 1934 conditions per place. [2022-11-21 16:56:27,372 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1133 selfloop transitions, 140 changer transitions 22/1334 dead transitions. [2022-11-21 16:56:27,372 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 963 places, 1334 transitions, 29092 flow [2022-11-21 16:56:27,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-21 16:56:27,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-21 16:56:27,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1910 transitions. [2022-11-21 16:56:27,375 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5644208037825059 [2022-11-21 16:56:27,375 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1910 transitions. [2022-11-21 16:56:27,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1910 transitions. [2022-11-21 16:56:27,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:56:27,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1910 transitions. [2022-11-21 16:56:27,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 53.05555555555556) internal successors, (1910), 36 states have internal predecessors, (1910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:27,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:27,379 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:27,379 INFO L175 Difference]: Start difference. First operand has 935 places, 1301 transitions, 25900 flow. Second operand 36 states and 1910 transitions. [2022-11-21 16:56:27,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 963 places, 1334 transitions, 29092 flow [2022-11-21 16:56:29,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 933 places, 1334 transitions, 28602 flow, removed 120 selfloop flow, removed 30 redundant places. [2022-11-21 16:56:29,696 INFO L231 Difference]: Finished difference. Result has 939 places, 1293 transitions, 25791 flow [2022-11-21 16:56:29,697 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=25422, PETRI_DIFFERENCE_MINUEND_PLACES=898, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=25791, PETRI_PLACES=939, PETRI_TRANSITIONS=1293} [2022-11-21 16:56:29,697 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 851 predicate places. [2022-11-21 16:56:29,697 INFO L495 AbstractCegarLoop]: Abstraction has has 939 places, 1293 transitions, 25791 flow [2022-11-21 16:56:29,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:29,697 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:56:29,697 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:56:29,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2022-11-21 16:56:29,698 INFO L420 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:56:29,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:56:29,698 INFO L85 PathProgramCache]: Analyzing trace with hash -359252944, now seen corresponding path program 208 times [2022-11-21 16:56:29,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:56:29,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488909917] [2022-11-21 16:56:29,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:56:29,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:56:29,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:30,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:56:30,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:56:30,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488909917] [2022-11-21 16:56:30,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488909917] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:56:30,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:56:30,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:56:30,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484540080] [2022-11-21 16:56:30,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:56:30,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:56:30,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:56:30,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:56:30,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:56:30,295 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:56:30,296 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 939 places, 1293 transitions, 25791 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:30,296 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:56:30,296 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:56:30,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:56:33,861 INFO L130 PetriNetUnfolder]: 799/2569 cut-off events. [2022-11-21 16:56:33,861 INFO L131 PetriNetUnfolder]: For 121700/121700 co-relation queries the response was YES. [2022-11-21 16:56:33,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27501 conditions, 2569 events. 799/2569 cut-off events. For 121700/121700 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 21426 event pairs, 39 based on Foata normal form. 1/2568 useless extension candidates. Maximal degree in co-relation 27157. Up to 1961 conditions per place. [2022-11-21 16:56:33,947 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1152 selfloop transitions, 111 changer transitions 16/1318 dead transitions. [2022-11-21 16:56:33,947 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 962 places, 1318 transitions, 28527 flow [2022-11-21 16:56:33,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-21 16:56:33,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-21 16:56:33,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1595 transitions. [2022-11-21 16:56:33,950 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5656028368794326 [2022-11-21 16:56:33,950 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1595 transitions. [2022-11-21 16:56:33,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1595 transitions. [2022-11-21 16:56:33,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:56:33,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1595 transitions. [2022-11-21 16:56:33,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 53.166666666666664) internal successors, (1595), 30 states have internal predecessors, (1595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:33,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:33,953 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:33,953 INFO L175 Difference]: Start difference. First operand has 939 places, 1293 transitions, 25791 flow. Second operand 30 states and 1595 transitions. [2022-11-21 16:56:33,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 962 places, 1318 transitions, 28527 flow [2022-11-21 16:56:36,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 927 places, 1318 transitions, 27935 flow, removed 119 selfloop flow, removed 35 redundant places. [2022-11-21 16:56:36,201 INFO L231 Difference]: Finished difference. Result has 931 places, 1286 transitions, 25355 flow [2022-11-21 16:56:36,201 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=25203, PETRI_DIFFERENCE_MINUEND_PLACES=898, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=25355, PETRI_PLACES=931, PETRI_TRANSITIONS=1286} [2022-11-21 16:56:36,202 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 843 predicate places. [2022-11-21 16:56:36,202 INFO L495 AbstractCegarLoop]: Abstraction has has 931 places, 1286 transitions, 25355 flow [2022-11-21 16:56:36,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:36,202 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:56:36,203 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:56:36,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2022-11-21 16:56:36,203 INFO L420 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:56:36,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:56:36,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1344540094, now seen corresponding path program 209 times [2022-11-21 16:56:36,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:56:36,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647671772] [2022-11-21 16:56:36,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:56:36,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:56:36,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:36,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:56:36,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:56:36,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647671772] [2022-11-21 16:56:36,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647671772] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:56:36,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:56:36,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:56:36,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765762684] [2022-11-21 16:56:36,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:56:36,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:56:36,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:56:36,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:56:36,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:56:36,925 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:56:36,925 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 931 places, 1286 transitions, 25355 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:36,926 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:56:36,926 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:56:36,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:56:40,727 INFO L130 PetriNetUnfolder]: 798/2555 cut-off events. [2022-11-21 16:56:40,728 INFO L131 PetriNetUnfolder]: For 121282/121282 co-relation queries the response was YES. [2022-11-21 16:56:40,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27247 conditions, 2555 events. 798/2555 cut-off events. For 121282/121282 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 21242 event pairs, 42 based on Foata normal form. 1/2552 useless extension candidates. Maximal degree in co-relation 26904. Up to 1924 conditions per place. [2022-11-21 16:56:40,805 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1132 selfloop transitions, 118 changer transitions 23/1312 dead transitions. [2022-11-21 16:56:40,805 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 947 places, 1312 transitions, 28089 flow [2022-11-21 16:56:40,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-21 16:56:40,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-21 16:56:40,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1656 transitions. [2022-11-21 16:56:40,807 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5682910089224433 [2022-11-21 16:56:40,807 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1656 transitions. [2022-11-21 16:56:40,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1656 transitions. [2022-11-21 16:56:40,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:56:40,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1656 transitions. [2022-11-21 16:56:40,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 53.41935483870968) internal successors, (1656), 31 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:40,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:40,811 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:40,811 INFO L175 Difference]: Start difference. First operand has 931 places, 1286 transitions, 25355 flow. Second operand 31 states and 1656 transitions. [2022-11-21 16:56:40,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 947 places, 1312 transitions, 28089 flow [2022-11-21 16:56:43,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 920 places, 1312 transitions, 27820 flow, removed 9 selfloop flow, removed 27 redundant places. [2022-11-21 16:56:43,075 INFO L231 Difference]: Finished difference. Result has 924 places, 1271 transitions, 25161 flow [2022-11-21 16:56:43,076 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=25092, PETRI_DIFFERENCE_MINUEND_PLACES=890, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=25161, PETRI_PLACES=924, PETRI_TRANSITIONS=1271} [2022-11-21 16:56:43,076 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 836 predicate places. [2022-11-21 16:56:43,076 INFO L495 AbstractCegarLoop]: Abstraction has has 924 places, 1271 transitions, 25161 flow [2022-11-21 16:56:43,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:43,077 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:56:43,077 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:56:43,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2022-11-21 16:56:43,077 INFO L420 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:56:43,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:56:43,077 INFO L85 PathProgramCache]: Analyzing trace with hash -2138442258, now seen corresponding path program 210 times [2022-11-21 16:56:43,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:56:43,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576114999] [2022-11-21 16:56:43,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:56:43,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:56:43,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:43,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:56:43,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:56:43,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576114999] [2022-11-21 16:56:43,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576114999] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:56:43,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:56:43,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:56:43,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765525881] [2022-11-21 16:56:43,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:56:43,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:56:43,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:56:43,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:56:43,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:56:43,643 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:56:43,643 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 924 places, 1271 transitions, 25161 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:43,643 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:56:43,643 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:56:43,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:56:47,607 INFO L130 PetriNetUnfolder]: 795/2553 cut-off events. [2022-11-21 16:56:47,607 INFO L131 PetriNetUnfolder]: For 121627/121627 co-relation queries the response was YES. [2022-11-21 16:56:47,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27270 conditions, 2553 events. 795/2553 cut-off events. For 121627/121627 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 21280 event pairs, 45 based on Foata normal form. 1/2550 useless extension candidates. Maximal degree in co-relation 26929. Up to 1762 conditions per place. [2022-11-21 16:56:47,691 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1018 selfloop transitions, 231 changer transitions 22/1310 dead transitions. [2022-11-21 16:56:47,691 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 948 places, 1310 transitions, 28306 flow [2022-11-21 16:56:47,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-21 16:56:47,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-21 16:56:47,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1903 transitions. [2022-11-21 16:56:47,694 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5623522458628841 [2022-11-21 16:56:47,694 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1903 transitions. [2022-11-21 16:56:47,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1903 transitions. [2022-11-21 16:56:47,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:56:47,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1903 transitions. [2022-11-21 16:56:47,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 52.861111111111114) internal successors, (1903), 36 states have internal predecessors, (1903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:47,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:47,698 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:47,699 INFO L175 Difference]: Start difference. First operand has 924 places, 1271 transitions, 25161 flow. Second operand 36 states and 1903 transitions. [2022-11-21 16:56:47,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 948 places, 1310 transitions, 28306 flow [2022-11-21 16:56:50,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 916 places, 1310 transitions, 27946 flow, removed 28 selfloop flow, removed 32 redundant places. [2022-11-21 16:56:50,024 INFO L231 Difference]: Finished difference. Result has 924 places, 1267 transitions, 25298 flow [2022-11-21 16:56:50,024 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=24809, PETRI_DIFFERENCE_MINUEND_PLACES=881, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=229, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1040, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=25298, PETRI_PLACES=924, PETRI_TRANSITIONS=1267} [2022-11-21 16:56:50,025 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 836 predicate places. [2022-11-21 16:56:50,025 INFO L495 AbstractCegarLoop]: Abstraction has has 924 places, 1267 transitions, 25298 flow [2022-11-21 16:56:50,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:50,025 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:56:50,025 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:56:50,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2022-11-21 16:56:50,025 INFO L420 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:56:50,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:56:50,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1970967598, now seen corresponding path program 211 times [2022-11-21 16:56:50,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:56:50,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144524214] [2022-11-21 16:56:50,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:56:50,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:56:50,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:50,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:56:50,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:56:50,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144524214] [2022-11-21 16:56:50,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144524214] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:56:50,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:56:50,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:56:50,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999078096] [2022-11-21 16:56:50,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:56:50,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:56:50,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:56:50,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:56:50,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:56:50,578 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:56:50,578 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 924 places, 1267 transitions, 25298 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:50,578 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:56:50,579 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:56:50,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:56:54,209 INFO L130 PetriNetUnfolder]: 791/2557 cut-off events. [2022-11-21 16:56:54,209 INFO L131 PetriNetUnfolder]: For 123538/123538 co-relation queries the response was YES. [2022-11-21 16:56:54,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27514 conditions, 2557 events. 791/2557 cut-off events. For 123538/123538 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 21304 event pairs, 41 based on Foata normal form. 1/2555 useless extension candidates. Maximal degree in co-relation 27171. Up to 1740 conditions per place. [2022-11-21 16:56:54,294 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1019 selfloop transitions, 211 changer transitions 46/1315 dead transitions. [2022-11-21 16:56:54,294 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 953 places, 1315 transitions, 28872 flow [2022-11-21 16:56:54,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-21 16:56:54,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-21 16:56:54,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1904 transitions. [2022-11-21 16:56:54,296 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5626477541371159 [2022-11-21 16:56:54,296 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1904 transitions. [2022-11-21 16:56:54,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1904 transitions. [2022-11-21 16:56:54,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:56:54,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1904 transitions. [2022-11-21 16:56:54,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 52.888888888888886) internal successors, (1904), 36 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:54,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:54,300 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:54,300 INFO L175 Difference]: Start difference. First operand has 924 places, 1267 transitions, 25298 flow. Second operand 36 states and 1904 transitions. [2022-11-21 16:56:54,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 953 places, 1315 transitions, 28872 flow [2022-11-21 16:56:56,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 920 places, 1315 transitions, 28265 flow, removed 50 selfloop flow, removed 33 redundant places. [2022-11-21 16:56:56,640 INFO L231 Difference]: Finished difference. Result has 927 places, 1246 transitions, 24838 flow [2022-11-21 16:56:56,640 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=24742, PETRI_DIFFERENCE_MINUEND_PLACES=885, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=206, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1059, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=24838, PETRI_PLACES=927, PETRI_TRANSITIONS=1246} [2022-11-21 16:56:56,641 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 839 predicate places. [2022-11-21 16:56:56,641 INFO L495 AbstractCegarLoop]: Abstraction has has 927 places, 1246 transitions, 24838 flow [2022-11-21 16:56:56,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:56,641 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:56:56,641 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:56:56,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2022-11-21 16:56:56,641 INFO L420 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:56:56,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:56:56,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1593916288, now seen corresponding path program 212 times [2022-11-21 16:56:56,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:56:56,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075468177] [2022-11-21 16:56:56,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:56:56,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:56:56,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:57,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:56:57,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:56:57,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075468177] [2022-11-21 16:56:57,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075468177] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:56:57,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:56:57,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:56:57,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58581949] [2022-11-21 16:56:57,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:56:57,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:56:57,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:56:57,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:56:57,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:56:57,222 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:56:57,223 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 927 places, 1246 transitions, 24838 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:57,223 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:56:57,223 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:56:57,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:57:00,959 INFO L130 PetriNetUnfolder]: 769/2476 cut-off events. [2022-11-21 16:57:00,960 INFO L131 PetriNetUnfolder]: For 120601/120601 co-relation queries the response was YES. [2022-11-21 16:57:01,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26671 conditions, 2476 events. 769/2476 cut-off events. For 120601/120601 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 20427 event pairs, 40 based on Foata normal form. 1/2474 useless extension candidates. Maximal degree in co-relation 26328. Up to 1874 conditions per place. [2022-11-21 16:57:01,036 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1094 selfloop transitions, 100 changer transitions 39/1272 dead transitions. [2022-11-21 16:57:01,036 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 950 places, 1272 transitions, 27473 flow [2022-11-21 16:57:01,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-21 16:57:01,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-21 16:57:01,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1702 transitions. [2022-11-21 16:57:01,039 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5658244680851063 [2022-11-21 16:57:01,039 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1702 transitions. [2022-11-21 16:57:01,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1702 transitions. [2022-11-21 16:57:01,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:57:01,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1702 transitions. [2022-11-21 16:57:01,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 53.1875) internal successors, (1702), 32 states have internal predecessors, (1702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:01,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:01,042 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:01,042 INFO L175 Difference]: Start difference. First operand has 927 places, 1246 transitions, 24838 flow. Second operand 32 states and 1702 transitions. [2022-11-21 16:57:01,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 950 places, 1272 transitions, 27473 flow [2022-11-21 16:57:03,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 921 places, 1272 transitions, 26830 flow, removed 162 selfloop flow, removed 29 redundant places. [2022-11-21 16:57:03,332 INFO L231 Difference]: Finished difference. Result has 925 places, 1219 transitions, 24070 flow [2022-11-21 16:57:03,333 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=24199, PETRI_DIFFERENCE_MINUEND_PLACES=890, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=24070, PETRI_PLACES=925, PETRI_TRANSITIONS=1219} [2022-11-21 16:57:03,333 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 837 predicate places. [2022-11-21 16:57:03,333 INFO L495 AbstractCegarLoop]: Abstraction has has 925 places, 1219 transitions, 24070 flow [2022-11-21 16:57:03,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:03,333 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:57:03,333 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:57:03,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2022-11-21 16:57:03,334 INFO L420 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:57:03,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:57:03,334 INFO L85 PathProgramCache]: Analyzing trace with hash -953027210, now seen corresponding path program 213 times [2022-11-21 16:57:03,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:57:03,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226832732] [2022-11-21 16:57:03,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:57:03,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:57:03,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:57:03,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:57:03,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:57:03,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226832732] [2022-11-21 16:57:03,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226832732] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:57:03,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:57:03,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:57:03,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224254216] [2022-11-21 16:57:03,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:57:03,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:57:03,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:57:03,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:57:03,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:57:03,893 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:57:03,893 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 925 places, 1219 transitions, 24070 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:03,893 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:57:03,893 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:57:03,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:57:07,571 INFO L130 PetriNetUnfolder]: 759/2440 cut-off events. [2022-11-21 16:57:07,571 INFO L131 PetriNetUnfolder]: For 119412/119412 co-relation queries the response was YES. [2022-11-21 16:57:07,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26264 conditions, 2440 events. 759/2440 cut-off events. For 119412/119412 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 20057 event pairs, 41 based on Foata normal form. 1/2438 useless extension candidates. Maximal degree in co-relation 25922. Up to 1839 conditions per place. [2022-11-21 16:57:07,652 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1067 selfloop transitions, 130 changer transitions 17/1253 dead transitions. [2022-11-21 16:57:07,652 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 935 places, 1253 transitions, 27135 flow [2022-11-21 16:57:07,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-21 16:57:07,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-21 16:57:07,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2011 transitions. [2022-11-21 16:57:07,655 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.562989921612542 [2022-11-21 16:57:07,655 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2011 transitions. [2022-11-21 16:57:07,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2011 transitions. [2022-11-21 16:57:07,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:57:07,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2011 transitions. [2022-11-21 16:57:07,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 52.921052631578945) internal successors, (2011), 38 states have internal predecessors, (2011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:07,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:07,659 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:07,660 INFO L175 Difference]: Start difference. First operand has 925 places, 1219 transitions, 24070 flow. Second operand 38 states and 2011 transitions. [2022-11-21 16:57:07,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 935 places, 1253 transitions, 27135 flow [2022-11-21 16:57:10,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 897 places, 1253 transitions, 26647 flow, removed 38 selfloop flow, removed 38 redundant places. [2022-11-21 16:57:10,110 INFO L231 Difference]: Finished difference. Result has 905 places, 1221 transitions, 24129 flow [2022-11-21 16:57:10,111 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=23610, PETRI_DIFFERENCE_MINUEND_PLACES=860, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1090, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=24129, PETRI_PLACES=905, PETRI_TRANSITIONS=1221} [2022-11-21 16:57:10,111 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 817 predicate places. [2022-11-21 16:57:10,111 INFO L495 AbstractCegarLoop]: Abstraction has has 905 places, 1221 transitions, 24129 flow [2022-11-21 16:57:10,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:10,111 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:57:10,112 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:57:10,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2022-11-21 16:57:10,112 INFO L420 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:57:10,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:57:10,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1932938860, now seen corresponding path program 214 times [2022-11-21 16:57:10,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:57:10,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77657860] [2022-11-21 16:57:10,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:57:10,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:57:10,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:57:10,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:57:10,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:57:10,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77657860] [2022-11-21 16:57:10,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77657860] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:57:10,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:57:10,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:57:10,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625687360] [2022-11-21 16:57:10,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:57:10,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:57:10,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:57:10,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:57:10,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:57:10,651 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:57:10,652 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 905 places, 1221 transitions, 24129 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:10,652 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:57:10,652 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:57:10,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:57:14,656 INFO L130 PetriNetUnfolder]: 757/2437 cut-off events. [2022-11-21 16:57:14,656 INFO L131 PetriNetUnfolder]: For 118442/118442 co-relation queries the response was YES. [2022-11-21 16:57:14,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26156 conditions, 2437 events. 757/2437 cut-off events. For 118442/118442 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 20034 event pairs, 39 based on Foata normal form. 1/2435 useless extension candidates. Maximal degree in co-relation 25819. Up to 1834 conditions per place. [2022-11-21 16:57:14,740 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1060 selfloop transitions, 137 changer transitions 16/1252 dead transitions. [2022-11-21 16:57:14,740 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 937 places, 1252 transitions, 27154 flow [2022-11-21 16:57:14,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-21 16:57:14,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-11-21 16:57:14,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 2060 transitions. [2022-11-21 16:57:14,743 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5619203491543917 [2022-11-21 16:57:14,743 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 2060 transitions. [2022-11-21 16:57:14,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 2060 transitions. [2022-11-21 16:57:14,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:57:14,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 2060 transitions. [2022-11-21 16:57:14,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 52.82051282051282) internal successors, (2060), 39 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:14,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 94.0) internal successors, (3760), 40 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:14,748 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 94.0) internal successors, (3760), 40 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:14,748 INFO L175 Difference]: Start difference. First operand has 905 places, 1221 transitions, 24129 flow. Second operand 39 states and 2060 transitions. [2022-11-21 16:57:14,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 937 places, 1252 transitions, 27154 flow [2022-11-21 16:57:16,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 904 places, 1252 transitions, 26685 flow, removed 123 selfloop flow, removed 33 redundant places. [2022-11-21 16:57:16,777 INFO L231 Difference]: Finished difference. Result has 910 places, 1221 transitions, 24183 flow [2022-11-21 16:57:16,777 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=23670, PETRI_DIFFERENCE_MINUEND_PLACES=866, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1085, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=24183, PETRI_PLACES=910, PETRI_TRANSITIONS=1221} [2022-11-21 16:57:16,778 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 822 predicate places. [2022-11-21 16:57:16,778 INFO L495 AbstractCegarLoop]: Abstraction has has 910 places, 1221 transitions, 24183 flow [2022-11-21 16:57:16,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:16,778 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:57:16,778 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:57:16,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2022-11-21 16:57:16,778 INFO L420 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:57:16,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:57:16,779 INFO L85 PathProgramCache]: Analyzing trace with hash 361932152, now seen corresponding path program 215 times [2022-11-21 16:57:16,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:57:16,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351444168] [2022-11-21 16:57:16,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:57:16,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:57:16,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:57:17,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:57:17,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:57:17,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351444168] [2022-11-21 16:57:17,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351444168] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:57:17,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:57:17,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:57:17,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861369006] [2022-11-21 16:57:17,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:57:17,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:57:17,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:57:17,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:57:17,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:57:17,244 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:57:17,244 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 910 places, 1221 transitions, 24183 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:17,244 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:57:17,244 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:57:17,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:57:20,809 INFO L130 PetriNetUnfolder]: 760/2431 cut-off events. [2022-11-21 16:57:20,809 INFO L131 PetriNetUnfolder]: For 120947/120947 co-relation queries the response was YES. [2022-11-21 16:57:20,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26262 conditions, 2431 events. 760/2431 cut-off events. For 120947/120947 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 19916 event pairs, 41 based on Foata normal form. 1/2428 useless extension candidates. Maximal degree in co-relation 25924. Up to 1857 conditions per place. [2022-11-21 16:57:20,888 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1085 selfloop transitions, 119 changer transitions 16/1259 dead transitions. [2022-11-21 16:57:20,888 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 940 places, 1259 transitions, 27329 flow [2022-11-21 16:57:20,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-21 16:57:20,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-21 16:57:20,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2009 transitions. [2022-11-21 16:57:20,890 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5624300111982082 [2022-11-21 16:57:20,891 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2009 transitions. [2022-11-21 16:57:20,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2009 transitions. [2022-11-21 16:57:20,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:57:20,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2009 transitions. [2022-11-21 16:57:20,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 52.86842105263158) internal successors, (2009), 38 states have internal predecessors, (2009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:20,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:20,895 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:20,895 INFO L175 Difference]: Start difference. First operand has 910 places, 1221 transitions, 24183 flow. Second operand 38 states and 2009 transitions. [2022-11-21 16:57:20,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 940 places, 1259 transitions, 27329 flow [2022-11-21 16:57:23,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 907 places, 1259 transitions, 26830 flow, removed 128 selfloop flow, removed 33 redundant places. [2022-11-21 16:57:23,081 INFO L231 Difference]: Finished difference. Result has 915 places, 1228 transitions, 24260 flow [2022-11-21 16:57:23,082 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=23708, PETRI_DIFFERENCE_MINUEND_PLACES=870, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=24260, PETRI_PLACES=915, PETRI_TRANSITIONS=1228} [2022-11-21 16:57:23,082 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 827 predicate places. [2022-11-21 16:57:23,082 INFO L495 AbstractCegarLoop]: Abstraction has has 915 places, 1228 transitions, 24260 flow [2022-11-21 16:57:23,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:23,083 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:57:23,083 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:57:23,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2022-11-21 16:57:23,083 INFO L420 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:57:23,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:57:23,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1620463998, now seen corresponding path program 216 times [2022-11-21 16:57:23,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:57:23,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394951848] [2022-11-21 16:57:23,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:57:23,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:57:23,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:57:23,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:57:23,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:57:23,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394951848] [2022-11-21 16:57:23,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394951848] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:57:23,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:57:23,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:57:23,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250030574] [2022-11-21 16:57:23,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:57:23,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:57:23,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:57:23,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:57:23,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:57:23,620 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:57:23,620 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 915 places, 1228 transitions, 24260 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:23,620 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:57:23,621 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:57:23,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:57:27,474 INFO L130 PetriNetUnfolder]: 755/2430 cut-off events. [2022-11-21 16:57:27,474 INFO L131 PetriNetUnfolder]: For 117376/117376 co-relation queries the response was YES. [2022-11-21 16:57:27,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25996 conditions, 2430 events. 755/2430 cut-off events. For 117376/117376 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 19943 event pairs, 41 based on Foata normal form. 1/2428 useless extension candidates. Maximal degree in co-relation 25653. Up to 1783 conditions per place. [2022-11-21 16:57:27,560 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1050 selfloop transitions, 115 changer transitions 51/1255 dead transitions. [2022-11-21 16:57:27,560 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 942 places, 1255 transitions, 26982 flow [2022-11-21 16:57:27,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-21 16:57:27,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-21 16:57:27,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1789 transitions. [2022-11-21 16:57:27,563 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5597622027534418 [2022-11-21 16:57:27,563 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1789 transitions. [2022-11-21 16:57:27,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1789 transitions. [2022-11-21 16:57:27,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:57:27,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1789 transitions. [2022-11-21 16:57:27,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 52.61764705882353) internal successors, (1789), 34 states have internal predecessors, (1789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:27,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:27,567 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:27,567 INFO L175 Difference]: Start difference. First operand has 915 places, 1228 transitions, 24260 flow. Second operand 34 states and 1789 transitions. [2022-11-21 16:57:27,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 942 places, 1255 transitions, 26982 flow [2022-11-21 16:57:29,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 913 places, 1255 transitions, 26558 flow, removed 131 selfloop flow, removed 29 redundant places. [2022-11-21 16:57:29,837 INFO L231 Difference]: Finished difference. Result has 918 places, 1186 transitions, 22980 flow [2022-11-21 16:57:29,837 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=23842, PETRI_DIFFERENCE_MINUEND_PLACES=880, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=22980, PETRI_PLACES=918, PETRI_TRANSITIONS=1186} [2022-11-21 16:57:29,837 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 830 predicate places. [2022-11-21 16:57:29,837 INFO L495 AbstractCegarLoop]: Abstraction has has 918 places, 1186 transitions, 22980 flow [2022-11-21 16:57:29,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:29,838 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:57:29,838 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:57:29,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2022-11-21 16:57:29,838 INFO L420 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:57:29,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:57:29,839 INFO L85 PathProgramCache]: Analyzing trace with hash 925682230, now seen corresponding path program 217 times [2022-11-21 16:57:29,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:57:29,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207018438] [2022-11-21 16:57:29,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:57:29,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:57:29,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:57:30,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:57:30,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:57:30,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207018438] [2022-11-21 16:57:30,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207018438] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:57:30,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:57:30,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:57:30,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351156509] [2022-11-21 16:57:30,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:57:30,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:57:30,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:57:30,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:57:30,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:57:30,363 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:57:30,363 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 918 places, 1186 transitions, 22980 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:30,363 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:57:30,363 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:57:30,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:57:33,873 INFO L130 PetriNetUnfolder]: 741/2385 cut-off events. [2022-11-21 16:57:33,873 INFO L131 PetriNetUnfolder]: For 113981/113981 co-relation queries the response was YES. [2022-11-21 16:57:33,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25221 conditions, 2385 events. 741/2385 cut-off events. For 113981/113981 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 19392 event pairs, 43 based on Foata normal form. 1/2383 useless extension candidates. Maximal degree in co-relation 24878. Up to 1687 conditions per place. [2022-11-21 16:57:33,954 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 982 selfloop transitions, 148 changer transitions 47/1216 dead transitions. [2022-11-21 16:57:33,954 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 931 places, 1216 transitions, 25652 flow [2022-11-21 16:57:33,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-21 16:57:33,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-21 16:57:33,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1746 transitions. [2022-11-21 16:57:33,956 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.562862669245648 [2022-11-21 16:57:33,956 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1746 transitions. [2022-11-21 16:57:33,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1746 transitions. [2022-11-21 16:57:33,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:57:33,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1746 transitions. [2022-11-21 16:57:33,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 52.90909090909091) internal successors, (1746), 33 states have internal predecessors, (1746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:33,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:33,960 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:33,960 INFO L175 Difference]: Start difference. First operand has 918 places, 1186 transitions, 22980 flow. Second operand 33 states and 1746 transitions. [2022-11-21 16:57:33,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 931 places, 1216 transitions, 25652 flow [2022-11-21 16:57:35,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 892 places, 1216 transitions, 25024 flow, removed 79 selfloop flow, removed 39 redundant places. [2022-11-21 16:57:36,020 INFO L231 Difference]: Finished difference. Result has 897 places, 1151 transitions, 21812 flow [2022-11-21 16:57:36,021 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=22362, PETRI_DIFFERENCE_MINUEND_PLACES=860, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1038, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=21812, PETRI_PLACES=897, PETRI_TRANSITIONS=1151} [2022-11-21 16:57:36,021 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 809 predicate places. [2022-11-21 16:57:36,021 INFO L495 AbstractCegarLoop]: Abstraction has has 897 places, 1151 transitions, 21812 flow [2022-11-21 16:57:36,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:36,021 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:57:36,021 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:57:36,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2022-11-21 16:57:36,022 INFO L420 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:57:36,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:57:36,022 INFO L85 PathProgramCache]: Analyzing trace with hash 528562542, now seen corresponding path program 218 times [2022-11-21 16:57:36,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:57:36,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931045078] [2022-11-21 16:57:36,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:57:36,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:57:36,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:57:36,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:57:36,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:57:36,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931045078] [2022-11-21 16:57:36,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931045078] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:57:36,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:57:36,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:57:36,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519977495] [2022-11-21 16:57:36,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:57:36,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:57:36,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:57:36,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:57:36,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:57:36,559 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:57:36,559 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 897 places, 1151 transitions, 21812 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:36,559 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:57:36,559 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:57:36,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:57:39,709 INFO L130 PetriNetUnfolder]: 727/2324 cut-off events. [2022-11-21 16:57:39,709 INFO L131 PetriNetUnfolder]: For 109861/109861 co-relation queries the response was YES. [2022-11-21 16:57:39,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24282 conditions, 2324 events. 727/2324 cut-off events. For 109861/109861 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 18683 event pairs, 44 based on Foata normal form. 1/2322 useless extension candidates. Maximal degree in co-relation 23948. Up to 1677 conditions per place. [2022-11-21 16:57:39,777 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 965 selfloop transitions, 101 changer transitions 73/1178 dead transitions. [2022-11-21 16:57:39,777 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 918 places, 1178 transitions, 24353 flow [2022-11-21 16:57:39,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-21 16:57:39,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-21 16:57:39,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1743 transitions. [2022-11-21 16:57:39,779 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5618955512572534 [2022-11-21 16:57:39,779 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1743 transitions. [2022-11-21 16:57:39,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1743 transitions. [2022-11-21 16:57:39,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:57:39,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1743 transitions. [2022-11-21 16:57:39,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 52.81818181818182) internal successors, (1743), 33 states have internal predecessors, (1743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:39,783 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:39,783 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:39,783 INFO L175 Difference]: Start difference. First operand has 897 places, 1151 transitions, 21812 flow. Second operand 33 states and 1743 transitions. [2022-11-21 16:57:39,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 918 places, 1178 transitions, 24353 flow [2022-11-21 16:57:41,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 885 places, 1178 transitions, 23950 flow, removed 42 selfloop flow, removed 33 redundant places. [2022-11-21 16:57:41,661 INFO L231 Difference]: Finished difference. Result has 889 places, 1091 transitions, 20245 flow [2022-11-21 16:57:41,662 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=21413, PETRI_DIFFERENCE_MINUEND_PLACES=853, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1050, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=20245, PETRI_PLACES=889, PETRI_TRANSITIONS=1091} [2022-11-21 16:57:41,662 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 801 predicate places. [2022-11-21 16:57:41,662 INFO L495 AbstractCegarLoop]: Abstraction has has 889 places, 1091 transitions, 20245 flow [2022-11-21 16:57:41,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:41,662 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:57:41,663 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:57:41,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2022-11-21 16:57:41,663 INFO L420 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:57:41,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:57:41,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1637051532, now seen corresponding path program 219 times [2022-11-21 16:57:41,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:57:41,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600883260] [2022-11-21 16:57:41,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:57:41,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:57:41,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:57:42,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:57:42,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:57:42,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600883260] [2022-11-21 16:57:42,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600883260] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:57:42,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:57:42,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-21 16:57:42,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49699004] [2022-11-21 16:57:42,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:57:42,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-21 16:57:42,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:57:42,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-21 16:57:42,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-21 16:57:42,235 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:57:42,236 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 889 places, 1091 transitions, 20245 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:42,236 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:57:42,236 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:57:42,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:57:45,833 INFO L130 PetriNetUnfolder]: 712/2250 cut-off events. [2022-11-21 16:57:45,833 INFO L131 PetriNetUnfolder]: For 108876/108876 co-relation queries the response was YES. [2022-11-21 16:57:45,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23392 conditions, 2250 events. 712/2250 cut-off events. For 108876/108876 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 17813 event pairs, 43 based on Foata normal form. 1/2249 useless extension candidates. Maximal degree in co-relation 23061. Up to 1673 conditions per place. [2022-11-21 16:57:45,906 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 964 selfloop transitions, 103 changer transitions 18/1124 dead transitions. [2022-11-21 16:57:45,906 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 904 places, 1124 transitions, 23073 flow [2022-11-21 16:57:45,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-21 16:57:45,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-21 16:57:45,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 1990 transitions. [2022-11-21 16:57:45,909 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5571108622620381 [2022-11-21 16:57:45,909 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 1990 transitions. [2022-11-21 16:57:45,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 1990 transitions. [2022-11-21 16:57:45,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:57:45,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 1990 transitions. [2022-11-21 16:57:45,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 52.36842105263158) internal successors, (1990), 38 states have internal predecessors, (1990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:45,913 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:45,914 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:45,914 INFO L175 Difference]: Start difference. First operand has 889 places, 1091 transitions, 20245 flow. Second operand 38 states and 1990 transitions. [2022-11-21 16:57:45,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 904 places, 1124 transitions, 23073 flow [2022-11-21 16:57:47,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 847 places, 1124 transitions, 22283 flow, removed 112 selfloop flow, removed 57 redundant places. [2022-11-21 16:57:47,580 INFO L231 Difference]: Finished difference. Result has 854 places, 1091 transitions, 19840 flow [2022-11-21 16:57:47,580 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=19490, PETRI_DIFFERENCE_MINUEND_PLACES=810, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1091, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=989, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=19840, PETRI_PLACES=854, PETRI_TRANSITIONS=1091} [2022-11-21 16:57:47,580 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 766 predicate places. [2022-11-21 16:57:47,580 INFO L495 AbstractCegarLoop]: Abstraction has has 854 places, 1091 transitions, 19840 flow [2022-11-21 16:57:47,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:47,581 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:57:47,581 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:57:47,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2022-11-21 16:57:47,581 INFO L420 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:57:47,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:57:47,581 INFO L85 PathProgramCache]: Analyzing trace with hash -2086834892, now seen corresponding path program 220 times [2022-11-21 16:57:47,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:57:47,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294253324] [2022-11-21 16:57:47,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:57:47,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:57:47,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:57:48,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:57:48,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:57:48,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294253324] [2022-11-21 16:57:48,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294253324] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:57:48,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:57:48,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-21 16:57:48,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936755568] [2022-11-21 16:57:48,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:57:48,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-21 16:57:48,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:57:48,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-21 16:57:48,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-21 16:57:48,251 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:57:48,252 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 854 places, 1091 transitions, 19840 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:48,252 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:57:48,252 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:57:48,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:57:51,410 INFO L130 PetriNetUnfolder]: 705/2227 cut-off events. [2022-11-21 16:57:51,410 INFO L131 PetriNetUnfolder]: For 100122/100122 co-relation queries the response was YES. [2022-11-21 16:57:51,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22691 conditions, 2227 events. 705/2227 cut-off events. For 100122/100122 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 17563 event pairs, 42 based on Foata normal form. 1/2224 useless extension candidates. Maximal degree in co-relation 22372. Up to 1669 conditions per place. [2022-11-21 16:57:51,470 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 957 selfloop transitions, 60 changer transitions 57/1113 dead transitions. [2022-11-21 16:57:51,471 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 881 places, 1113 transitions, 22203 flow [2022-11-21 16:57:51,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-21 16:57:51,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-21 16:57:51,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1834 transitions. [2022-11-21 16:57:51,473 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5574468085106383 [2022-11-21 16:57:51,473 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1834 transitions. [2022-11-21 16:57:51,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1834 transitions. [2022-11-21 16:57:51,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:57:51,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1834 transitions. [2022-11-21 16:57:51,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 52.4) internal successors, (1834), 35 states have internal predecessors, (1834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:51,476 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:51,477 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:51,477 INFO L175 Difference]: Start difference. First operand has 854 places, 1091 transitions, 19840 flow. Second operand 35 states and 1834 transitions. [2022-11-21 16:57:51,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 881 places, 1113 transitions, 22203 flow [2022-11-21 16:57:52,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 848 places, 1113 transitions, 21766 flow, removed 110 selfloop flow, removed 33 redundant places. [2022-11-21 16:57:52,782 INFO L231 Difference]: Finished difference. Result has 853 places, 1046 transitions, 18783 flow [2022-11-21 16:57:52,783 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=19411, PETRI_DIFFERENCE_MINUEND_PLACES=814, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1091, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1031, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=18783, PETRI_PLACES=853, PETRI_TRANSITIONS=1046} [2022-11-21 16:57:52,783 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 765 predicate places. [2022-11-21 16:57:52,783 INFO L495 AbstractCegarLoop]: Abstraction has has 853 places, 1046 transitions, 18783 flow [2022-11-21 16:57:52,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:52,783 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:57:52,783 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:57:52,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2022-11-21 16:57:52,783 INFO L420 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:57:52,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:57:52,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1963876810, now seen corresponding path program 221 times [2022-11-21 16:57:52,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:57:52,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115315636] [2022-11-21 16:57:52,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:57:52,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:57:52,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:57:53,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:57:53,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:57:53,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115315636] [2022-11-21 16:57:53,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115315636] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:57:53,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:57:53,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-21 16:57:53,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943542495] [2022-11-21 16:57:53,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:57:53,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-21 16:57:53,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:57:53,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-21 16:57:53,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-11-21 16:57:53,314 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:57:53,314 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 853 places, 1046 transitions, 18783 flow. Second operand has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:53,314 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:57:53,314 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:57:53,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:57:56,723 INFO L130 PetriNetUnfolder]: 694/2179 cut-off events. [2022-11-21 16:57:56,723 INFO L131 PetriNetUnfolder]: For 95722/95722 co-relation queries the response was YES. [2022-11-21 16:57:56,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22003 conditions, 2179 events. 694/2179 cut-off events. For 95722/95722 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 17104 event pairs, 45 based on Foata normal form. 1/2178 useless extension candidates. Maximal degree in co-relation 21684. Up to 1658 conditions per place. [2022-11-21 16:57:56,795 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 946 selfloop transitions, 67 changer transitions 15/1067 dead transitions. [2022-11-21 16:57:56,795 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 856 places, 1067 transitions, 21168 flow [2022-11-21 16:57:56,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-21 16:57:56,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-21 16:57:56,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1828 transitions. [2022-11-21 16:57:56,798 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5556231003039513 [2022-11-21 16:57:56,798 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1828 transitions. [2022-11-21 16:57:56,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1828 transitions. [2022-11-21 16:57:56,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:57:56,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1828 transitions. [2022-11-21 16:57:56,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 52.22857142857143) internal successors, (1828), 35 states have internal predecessors, (1828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:56,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:56,803 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:56,803 INFO L175 Difference]: Start difference. First operand has 853 places, 1046 transitions, 18783 flow. Second operand 35 states and 1828 transitions. [2022-11-21 16:57:56,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 856 places, 1067 transitions, 21168 flow [2022-11-21 16:57:58,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 816 places, 1067 transitions, 20818 flow, removed 65 selfloop flow, removed 40 redundant places. [2022-11-21 16:57:58,359 INFO L231 Difference]: Finished difference. Result has 821 places, 1041 transitions, 18568 flow [2022-11-21 16:57:58,359 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=18449, PETRI_DIFFERENCE_MINUEND_PLACES=782, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1046, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=979, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=18568, PETRI_PLACES=821, PETRI_TRANSITIONS=1041} [2022-11-21 16:57:58,360 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 733 predicate places. [2022-11-21 16:57:58,360 INFO L495 AbstractCegarLoop]: Abstraction has has 821 places, 1041 transitions, 18568 flow [2022-11-21 16:57:58,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:58,360 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:57:58,360 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:57:58,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2022-11-21 16:57:58,360 INFO L420 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:57:58,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:57:58,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1573213868, now seen corresponding path program 222 times [2022-11-21 16:57:58,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:57:58,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104348577] [2022-11-21 16:57:58,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:57:58,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:57:58,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:57:58,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:57:58,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:57:58,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104348577] [2022-11-21 16:57:58,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104348577] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:57:58,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:57:58,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-21 16:57:58,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386386090] [2022-11-21 16:57:58,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:57:58,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-21 16:57:58,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:57:58,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-21 16:57:58,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-11-21 16:57:58,893 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:57:58,893 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 821 places, 1041 transitions, 18568 flow. Second operand has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:58,893 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:57:58,893 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:57:58,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:58:01,761 INFO L130 PetriNetUnfolder]: 690/2168 cut-off events. [2022-11-21 16:58:01,761 INFO L131 PetriNetUnfolder]: For 92564/92564 co-relation queries the response was YES. [2022-11-21 16:58:01,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21672 conditions, 2168 events. 690/2168 cut-off events. For 92564/92564 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 17000 event pairs, 43 based on Foata normal form. 1/2166 useless extension candidates. Maximal degree in co-relation 21362. Up to 1656 conditions per place. [2022-11-21 16:58:01,824 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 945 selfloop transitions, 52 changer transitions 24/1060 dead transitions. [2022-11-21 16:58:01,824 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 845 places, 1060 transitions, 20736 flow [2022-11-21 16:58:01,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-21 16:58:01,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-21 16:58:01,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1723 transitions. [2022-11-21 16:58:01,827 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5554480980012895 [2022-11-21 16:58:01,827 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1723 transitions. [2022-11-21 16:58:01,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1723 transitions. [2022-11-21 16:58:01,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:58:01,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1723 transitions. [2022-11-21 16:58:01,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 52.21212121212121) internal successors, (1723), 33 states have internal predecessors, (1723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:01,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:01,830 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:01,830 INFO L175 Difference]: Start difference. First operand has 821 places, 1041 transitions, 18568 flow. Second operand 33 states and 1723 transitions. [2022-11-21 16:58:01,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 845 places, 1060 transitions, 20736 flow [2022-11-21 16:58:03,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 809 places, 1060 transitions, 20200 flow, removed 170 selfloop flow, removed 36 redundant places. [2022-11-21 16:58:03,224 INFO L231 Difference]: Finished difference. Result has 813 places, 1026 transitions, 17990 flow [2022-11-21 16:58:03,224 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=18044, PETRI_DIFFERENCE_MINUEND_PLACES=777, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1041, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=989, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=17990, PETRI_PLACES=813, PETRI_TRANSITIONS=1026} [2022-11-21 16:58:03,224 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 725 predicate places. [2022-11-21 16:58:03,225 INFO L495 AbstractCegarLoop]: Abstraction has has 813 places, 1026 transitions, 17990 flow [2022-11-21 16:58:03,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:03,225 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:58:03,225 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:58:03,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2022-11-21 16:58:03,225 INFO L420 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:58:03,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:58:03,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1574806274, now seen corresponding path program 223 times [2022-11-21 16:58:03,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:58:03,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356566383] [2022-11-21 16:58:03,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:58:03,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:58:03,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:58:03,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:58:03,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:58:03,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356566383] [2022-11-21 16:58:03,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356566383] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:58:03,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:58:03,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-21 16:58:03,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653391342] [2022-11-21 16:58:03,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:58:03,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-21 16:58:03,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:58:03,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-21 16:58:03,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-21 16:58:03,808 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:58:03,808 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 813 places, 1026 transitions, 17990 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:03,808 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:58:03,808 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:58:03,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:58:07,481 INFO L130 PetriNetUnfolder]: 697/2183 cut-off events. [2022-11-21 16:58:07,481 INFO L131 PetriNetUnfolder]: For 92928/92928 co-relation queries the response was YES. [2022-11-21 16:58:07,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21645 conditions, 2183 events. 697/2183 cut-off events. For 92928/92928 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 17184 event pairs, 38 based on Foata normal form. 1/2181 useless extension candidates. Maximal degree in co-relation 21339. Up to 1449 conditions per place. [2022-11-21 16:58:07,536 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 832 selfloop transitions, 201 changer transitions 21/1093 dead transitions. [2022-11-21 16:58:07,536 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 821 places, 1093 transitions, 21709 flow [2022-11-21 16:58:07,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-21 16:58:07,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-11-21 16:58:07,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 2061 transitions. [2022-11-21 16:58:07,539 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5621931260229133 [2022-11-21 16:58:07,539 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 2061 transitions. [2022-11-21 16:58:07,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 2061 transitions. [2022-11-21 16:58:07,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:58:07,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 2061 transitions. [2022-11-21 16:58:07,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 52.84615384615385) internal successors, (2061), 39 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:07,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 94.0) internal successors, (3760), 40 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:07,542 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 94.0) internal successors, (3760), 40 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:07,542 INFO L175 Difference]: Start difference. First operand has 813 places, 1026 transitions, 17990 flow. Second operand 39 states and 2061 transitions. [2022-11-21 16:58:07,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 821 places, 1093 transitions, 21709 flow [2022-11-21 16:58:08,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 785 places, 1093 transitions, 21122 flow, removed 114 selfloop flow, removed 36 redundant places. [2022-11-21 16:58:08,811 INFO L231 Difference]: Finished difference. Result has 792 places, 1038 transitions, 18360 flow [2022-11-21 16:58:08,812 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=17459, PETRI_DIFFERENCE_MINUEND_PLACES=747, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1026, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=190, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=832, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=18360, PETRI_PLACES=792, PETRI_TRANSITIONS=1038} [2022-11-21 16:58:08,812 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 704 predicate places. [2022-11-21 16:58:08,812 INFO L495 AbstractCegarLoop]: Abstraction has has 792 places, 1038 transitions, 18360 flow [2022-11-21 16:58:08,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:08,812 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:58:08,812 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:58:08,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2022-11-21 16:58:08,813 INFO L420 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:58:08,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:58:08,813 INFO L85 PathProgramCache]: Analyzing trace with hash -672498512, now seen corresponding path program 224 times [2022-11-21 16:58:08,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:58:08,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826722697] [2022-11-21 16:58:08,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:58:08,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:58:08,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:58:09,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:58:09,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:58:09,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826722697] [2022-11-21 16:58:09,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826722697] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:58:09,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:58:09,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:58:09,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163679322] [2022-11-21 16:58:09,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:58:09,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:58:09,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:58:09,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:58:09,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:58:09,304 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:58:09,305 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 792 places, 1038 transitions, 18360 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:09,305 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:58:09,305 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:58:09,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:58:12,379 INFO L130 PetriNetUnfolder]: 691/2167 cut-off events. [2022-11-21 16:58:12,379 INFO L131 PetriNetUnfolder]: For 85868/85868 co-relation queries the response was YES. [2022-11-21 16:58:12,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20945 conditions, 2167 events. 691/2167 cut-off events. For 85868/85868 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 17024 event pairs, 38 based on Foata normal form. 1/2165 useless extension candidates. Maximal degree in co-relation 20652. Up to 1605 conditions per place. [2022-11-21 16:58:12,445 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 902 selfloop transitions, 111 changer transitions 15/1067 dead transitions. [2022-11-21 16:58:12,446 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 822 places, 1067 transitions, 20802 flow [2022-11-21 16:58:12,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-21 16:58:12,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-21 16:58:12,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1904 transitions. [2022-11-21 16:58:12,448 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5626477541371159 [2022-11-21 16:58:12,448 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1904 transitions. [2022-11-21 16:58:12,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1904 transitions. [2022-11-21 16:58:12,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:58:12,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1904 transitions. [2022-11-21 16:58:12,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 52.888888888888886) internal successors, (1904), 36 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:12,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:12,452 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:12,452 INFO L175 Difference]: Start difference. First operand has 792 places, 1038 transitions, 18360 flow. Second operand 36 states and 1904 transitions. [2022-11-21 16:58:12,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 822 places, 1067 transitions, 20802 flow [2022-11-21 16:58:13,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 790 places, 1067 transitions, 20214 flow, removed 162 selfloop flow, removed 32 redundant places. [2022-11-21 16:58:13,687 INFO L231 Difference]: Finished difference. Result has 798 places, 1037 transitions, 18064 flow [2022-11-21 16:58:13,688 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=17784, PETRI_DIFFERENCE_MINUEND_PLACES=755, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1038, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=927, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=18064, PETRI_PLACES=798, PETRI_TRANSITIONS=1037} [2022-11-21 16:58:13,688 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 710 predicate places. [2022-11-21 16:58:13,688 INFO L495 AbstractCegarLoop]: Abstraction has has 798 places, 1037 transitions, 18064 flow [2022-11-21 16:58:13,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:13,688 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:58:13,688 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:58:13,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2022-11-21 16:58:13,689 INFO L420 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:58:13,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:58:13,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1622837058, now seen corresponding path program 225 times [2022-11-21 16:58:13,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:58:13,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979383935] [2022-11-21 16:58:13,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:58:13,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:58:13,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:58:14,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:58:14,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:58:14,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979383935] [2022-11-21 16:58:14,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979383935] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:58:14,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:58:14,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:58:14,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407697655] [2022-11-21 16:58:14,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:58:14,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:58:14,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:58:14,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:58:14,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:58:14,169 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:58:14,169 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 798 places, 1037 transitions, 18064 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:14,169 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:58:14,170 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:58:14,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:58:17,186 INFO L130 PetriNetUnfolder]: 688/2144 cut-off events. [2022-11-21 16:58:17,186 INFO L131 PetriNetUnfolder]: For 81437/81437 co-relation queries the response was YES. [2022-11-21 16:58:17,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20675 conditions, 2144 events. 688/2144 cut-off events. For 81437/81437 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 16745 event pairs, 41 based on Foata normal form. 1/2142 useless extension candidates. Maximal degree in co-relation 20379. Up to 1598 conditions per place. [2022-11-21 16:58:17,243 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 895 selfloop transitions, 115 changer transitions 15/1064 dead transitions. [2022-11-21 16:58:17,243 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 829 places, 1064 transitions, 20493 flow [2022-11-21 16:58:17,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-21 16:58:17,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-21 16:58:17,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2002 transitions. [2022-11-21 16:58:17,246 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5604703247480403 [2022-11-21 16:58:17,246 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2002 transitions. [2022-11-21 16:58:17,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2002 transitions. [2022-11-21 16:58:17,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:58:17,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2002 transitions. [2022-11-21 16:58:17,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 52.68421052631579) internal successors, (2002), 38 states have internal predecessors, (2002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:17,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:17,250 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:17,250 INFO L175 Difference]: Start difference. First operand has 798 places, 1037 transitions, 18064 flow. Second operand 38 states and 2002 transitions. [2022-11-21 16:58:17,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 829 places, 1064 transitions, 20493 flow [2022-11-21 16:58:18,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 793 places, 1064 transitions, 20188 flow, removed 29 selfloop flow, removed 36 redundant places. [2022-11-21 16:58:18,424 INFO L231 Difference]: Finished difference. Result has 800 places, 1034 transitions, 18048 flow [2022-11-21 16:58:18,425 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=17777, PETRI_DIFFERENCE_MINUEND_PLACES=756, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1037, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=922, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=18048, PETRI_PLACES=800, PETRI_TRANSITIONS=1034} [2022-11-21 16:58:18,425 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 712 predicate places. [2022-11-21 16:58:18,425 INFO L495 AbstractCegarLoop]: Abstraction has has 800 places, 1034 transitions, 18048 flow [2022-11-21 16:58:18,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:18,426 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:58:18,426 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:58:18,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2022-11-21 16:58:18,426 INFO L420 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:58:18,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:58:18,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1735909186, now seen corresponding path program 226 times [2022-11-21 16:58:18,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:58:18,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639953802] [2022-11-21 16:58:18,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:58:18,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:58:18,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:58:18,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:58:18,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:58:18,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639953802] [2022-11-21 16:58:18,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639953802] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:58:18,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:58:18,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:58:18,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049257719] [2022-11-21 16:58:18,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:58:18,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:58:18,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:58:18,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:58:18,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:58:18,933 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:58:18,934 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 800 places, 1034 transitions, 18048 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:18,934 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:58:18,934 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:58:18,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:58:22,041 INFO L130 PetriNetUnfolder]: 687/2155 cut-off events. [2022-11-21 16:58:22,041 INFO L131 PetriNetUnfolder]: For 82022/82022 co-relation queries the response was YES. [2022-11-21 16:58:22,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20722 conditions, 2155 events. 687/2155 cut-off events. For 82022/82022 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 16891 event pairs, 44 based on Foata normal form. 1/2153 useless extension candidates. Maximal degree in co-relation 20426. Up to 1612 conditions per place. [2022-11-21 16:58:22,102 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 905 selfloop transitions, 97 changer transitions 19/1060 dead transitions. [2022-11-21 16:58:22,102 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 823 places, 1060 transitions, 20467 flow [2022-11-21 16:58:22,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-21 16:58:22,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-21 16:58:22,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1637 transitions. [2022-11-21 16:58:22,105 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.561770761839396 [2022-11-21 16:58:22,105 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1637 transitions. [2022-11-21 16:58:22,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1637 transitions. [2022-11-21 16:58:22,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:58:22,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1637 transitions. [2022-11-21 16:58:22,107 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 52.806451612903224) internal successors, (1637), 31 states have internal predecessors, (1637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:22,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:22,108 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:22,109 INFO L175 Difference]: Start difference. First operand has 800 places, 1034 transitions, 18048 flow. Second operand 31 states and 1637 transitions. [2022-11-21 16:58:22,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 823 places, 1060 transitions, 20467 flow [2022-11-21 16:58:23,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 788 places, 1060 transitions, 20197 flow, removed 22 selfloop flow, removed 35 redundant places. [2022-11-21 16:58:23,347 INFO L231 Difference]: Finished difference. Result has 795 places, 1030 transitions, 17945 flow [2022-11-21 16:58:23,348 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=17784, PETRI_DIFFERENCE_MINUEND_PLACES=758, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1034, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=937, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=17945, PETRI_PLACES=795, PETRI_TRANSITIONS=1030} [2022-11-21 16:58:23,348 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 707 predicate places. [2022-11-21 16:58:23,348 INFO L495 AbstractCegarLoop]: Abstraction has has 795 places, 1030 transitions, 17945 flow [2022-11-21 16:58:23,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:23,348 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:58:23,349 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:58:23,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2022-11-21 16:58:23,349 INFO L420 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:58:23,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:58:23,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1557328624, now seen corresponding path program 227 times [2022-11-21 16:58:23,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:58:23,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758977966] [2022-11-21 16:58:23,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:58:23,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:58:23,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:58:23,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:58:23,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:58:23,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758977966] [2022-11-21 16:58:23,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758977966] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:58:23,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:58:23,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:58:23,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493443393] [2022-11-21 16:58:23,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:58:23,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:58:23,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:58:23,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:58:23,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:58:23,862 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:58:23,863 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 795 places, 1030 transitions, 17945 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:23,863 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:58:23,863 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:58:23,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:58:26,831 INFO L130 PetriNetUnfolder]: 724/2279 cut-off events. [2022-11-21 16:58:26,832 INFO L131 PetriNetUnfolder]: For 89749/89749 co-relation queries the response was YES. [2022-11-21 16:58:26,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21999 conditions, 2279 events. 724/2279 cut-off events. For 89749/89749 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 18228 event pairs, 43 based on Foata normal form. 1/2277 useless extension candidates. Maximal degree in co-relation 21702. Up to 1589 conditions per place. [2022-11-21 16:58:26,895 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 895 selfloop transitions, 163 changer transitions 42/1139 dead transitions. [2022-11-21 16:58:26,895 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 823 places, 1139 transitions, 22388 flow [2022-11-21 16:58:26,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-21 16:58:26,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-21 16:58:26,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1958 transitions. [2022-11-21 16:58:26,897 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5629672225416906 [2022-11-21 16:58:26,897 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1958 transitions. [2022-11-21 16:58:26,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1958 transitions. [2022-11-21 16:58:26,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:58:26,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1958 transitions. [2022-11-21 16:58:26,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 52.91891891891892) internal successors, (1958), 37 states have internal predecessors, (1958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:26,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:26,902 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:26,902 INFO L175 Difference]: Start difference. First operand has 795 places, 1030 transitions, 17945 flow. Second operand 37 states and 1958 transitions. [2022-11-21 16:58:26,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 823 places, 1139 transitions, 22388 flow [2022-11-21 16:58:28,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 792 places, 1139 transitions, 22109 flow, removed 17 selfloop flow, removed 31 redundant places. [2022-11-21 16:58:28,203 INFO L231 Difference]: Finished difference. Result has 808 places, 1079 transitions, 19352 flow [2022-11-21 16:58:28,203 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=17692, PETRI_DIFFERENCE_MINUEND_PLACES=756, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1030, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=872, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=19352, PETRI_PLACES=808, PETRI_TRANSITIONS=1079} [2022-11-21 16:58:28,204 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 720 predicate places. [2022-11-21 16:58:28,204 INFO L495 AbstractCegarLoop]: Abstraction has has 808 places, 1079 transitions, 19352 flow [2022-11-21 16:58:28,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:28,204 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:58:28,204 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:58:28,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2022-11-21 16:58:28,204 INFO L420 AbstractCegarLoop]: === Iteration 228 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:58:28,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:58:28,205 INFO L85 PathProgramCache]: Analyzing trace with hash -6981524, now seen corresponding path program 228 times [2022-11-21 16:58:28,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:58:28,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328611636] [2022-11-21 16:58:28,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:58:28,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:58:28,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:58:28,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:58:28,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:58:28,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328611636] [2022-11-21 16:58:28,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328611636] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:58:28,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:58:28,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-21 16:58:28,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437884582] [2022-11-21 16:58:28,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:58:28,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-21 16:58:28,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:58:28,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-21 16:58:28,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-11-21 16:58:28,788 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:58:28,788 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 808 places, 1079 transitions, 19352 flow. Second operand has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:28,788 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:58:28,788 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:58:28,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:58:32,721 INFO L130 PetriNetUnfolder]: 710/2242 cut-off events. [2022-11-21 16:58:32,721 INFO L131 PetriNetUnfolder]: For 91217/91217 co-relation queries the response was YES. [2022-11-21 16:58:32,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22140 conditions, 2242 events. 710/2242 cut-off events. For 91217/91217 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 17801 event pairs, 40 based on Foata normal form. 1/2240 useless extension candidates. Maximal degree in co-relation 21834. Up to 1488 conditions per place. [2022-11-21 16:58:32,797 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 871 selfloop transitions, 212 changer transitions 20/1142 dead transitions. [2022-11-21 16:58:32,797 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 843 places, 1142 transitions, 23195 flow [2022-11-21 16:58:32,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-21 16:58:32,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-11-21 16:58:32,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 2313 transitions. [2022-11-21 16:58:32,800 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5592359767891683 [2022-11-21 16:58:32,800 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 2313 transitions. [2022-11-21 16:58:32,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 2313 transitions. [2022-11-21 16:58:32,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:58:32,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 2313 transitions. [2022-11-21 16:58:32,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 52.56818181818182) internal successors, (2313), 44 states have internal predecessors, (2313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:32,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 94.0) internal successors, (4230), 45 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:32,805 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 94.0) internal successors, (4230), 45 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:32,805 INFO L175 Difference]: Start difference. First operand has 808 places, 1079 transitions, 19352 flow. Second operand 44 states and 2313 transitions. [2022-11-21 16:58:32,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 843 places, 1142 transitions, 23195 flow [2022-11-21 16:58:34,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 820 places, 1142 transitions, 22847 flow, removed 117 selfloop flow, removed 23 redundant places. [2022-11-21 16:58:34,297 INFO L231 Difference]: Finished difference. Result has 830 places, 1088 transitions, 19900 flow [2022-11-21 16:58:34,298 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=19028, PETRI_DIFFERENCE_MINUEND_PLACES=777, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1079, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=203, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=872, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=19900, PETRI_PLACES=830, PETRI_TRANSITIONS=1088} [2022-11-21 16:58:34,298 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 742 predicate places. [2022-11-21 16:58:34,298 INFO L495 AbstractCegarLoop]: Abstraction has has 830 places, 1088 transitions, 19900 flow [2022-11-21 16:58:34,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:34,299 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:58:34,299 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:58:34,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2022-11-21 16:58:34,299 INFO L420 AbstractCegarLoop]: === Iteration 229 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:58:34,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:58:34,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1276319974, now seen corresponding path program 229 times [2022-11-21 16:58:34,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:58:34,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196038395] [2022-11-21 16:58:34,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:58:34,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:58:34,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:58:34,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:58:34,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:58:34,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196038395] [2022-11-21 16:58:34,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196038395] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:58:34,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:58:34,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:58:34,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248012778] [2022-11-21 16:58:34,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:58:34,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:58:34,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:58:34,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:58:34,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:58:34,825 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-21 16:58:34,826 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 830 places, 1088 transitions, 19900 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:34,826 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:58:34,826 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-21 16:58:34,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand