./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-barrier.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_36c2c111-1589-493b-a5d3-f268e946aab0/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c2c111-1589-493b-a5d3-f268e946aab0/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_36c2c111-1589-493b-a5d3-f268e946aab0/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c2c111-1589-493b-a5d3-f268e946aab0/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-barrier.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c2c111-1589-493b-a5d3-f268e946aab0/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_36c2c111-1589-493b-a5d3-f268e946aab0/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 22b51332425cd14048935a20a73abea0065b1633fac56d6d6be511ab67585236 --- 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 16:59:49,470 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:59:49,473 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:59:49,508 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:59:49,512 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:59:49,515 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:59:49,517 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:59:49,520 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:59:49,522 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:59:49,525 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:59:49,526 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:59:49,527 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:59:49,527 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:59:49,528 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:59:49,529 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:59:49,530 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:59:49,531 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:59:49,532 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:59:49,533 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:59:49,535 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:59:49,538 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:59:49,539 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:59:49,540 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:59:49,541 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:59:49,545 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:59:49,549 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:59:49,550 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:59:49,551 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:59:49,551 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:59:49,552 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:59:49,554 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:59:49,555 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:59:49,556 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:59:49,557 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:59:49,559 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:59:49,559 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:59:49,560 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:59:49,561 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:59:49,561 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:59:49,562 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:59:49,564 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:59:49,565 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c2c111-1589-493b-a5d3-f268e946aab0/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 16:59:49,585 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:59:49,585 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:59:49,585 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:59:49,585 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:59:49,586 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 16:59:49,586 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 16:59:49,587 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:59:49,587 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:59:49,587 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:59:49,587 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:59:49,588 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 16:59:49,588 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:59:49,588 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 16:59:49,588 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:59:49,588 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 16:59:49,588 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 16:59:49,589 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 16:59:49,589 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 16:59:49,589 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 16:59:49,589 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:59:49,589 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 16:59:49,590 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:59:49,590 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:59:49,590 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 16:59:49,590 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:59:49,590 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:59:49,591 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 16:59:49,591 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 16:59:49,591 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 16:59:49,591 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 16:59:49,591 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 16:59:49,591 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 16:59:49,592 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 16:59:49,592 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_36c2c111-1589-493b-a5d3-f268e946aab0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c2c111-1589-493b-a5d3-f268e946aab0/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22b51332425cd14048935a20a73abea0065b1633fac56d6d6be511ab67585236 [2022-11-21 16:59:49,913 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:59:49,942 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:59:49,944 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:59:49,946 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:59:49,946 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:59:49,948 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c2c111-1589-493b-a5d3-f268e946aab0/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/weaver/parallel-barrier.wvr.c [2022-11-21 16:59:53,021 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:59:53,315 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:59:53,315 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c2c111-1589-493b-a5d3-f268e946aab0/sv-benchmarks/c/weaver/parallel-barrier.wvr.c [2022-11-21 16:59:53,325 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c2c111-1589-493b-a5d3-f268e946aab0/bin/uautomizer-vX5HgA9Q3a/data/3f05841ac/bbeec545cf0548419e557cf6af668a4b/FLAGa0184deff [2022-11-21 16:59:53,345 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c2c111-1589-493b-a5d3-f268e946aab0/bin/uautomizer-vX5HgA9Q3a/data/3f05841ac/bbeec545cf0548419e557cf6af668a4b [2022-11-21 16:59:53,350 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:59:53,353 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:59:53,356 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:59:53,356 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:59:53,360 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:59:53,360 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:59:53" (1/1) ... [2022-11-21 16:59:53,361 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8ae10ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:59:53, skipping insertion in model container [2022-11-21 16:59:53,362 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:59:53" (1/1) ... [2022-11-21 16:59:53,369 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:59:53,410 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:59:53,629 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_36c2c111-1589-493b-a5d3-f268e946aab0/sv-benchmarks/c/weaver/parallel-barrier.wvr.c[4722,4735] [2022-11-21 16:59:53,635 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:59:53,647 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 16:59:53,682 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_36c2c111-1589-493b-a5d3-f268e946aab0/sv-benchmarks/c/weaver/parallel-barrier.wvr.c[4722,4735] [2022-11-21 16:59:53,683 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:59:53,699 INFO L208 MainTranslator]: Completed translation [2022-11-21 16:59:53,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:59:53 WrapperNode [2022-11-21 16:59:53,700 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:59:53,702 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 16:59:53,702 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 16:59:53,702 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 16:59:53,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:59:53" (1/1) ... [2022-11-21 16:59:53,721 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:59:53" (1/1) ... [2022-11-21 16:59:53,754 INFO L138 Inliner]: procedures = 25, calls = 98, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 253 [2022-11-21 16:59:53,755 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 16:59:53,755 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 16:59:53,756 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 16:59:53,756 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 16:59:53,767 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:59:53" (1/1) ... [2022-11-21 16:59:53,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:59:53" (1/1) ... [2022-11-21 16:59:53,771 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:59:53" (1/1) ... [2022-11-21 16:59:53,772 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:59:53" (1/1) ... [2022-11-21 16:59:53,780 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:59:53" (1/1) ... [2022-11-21 16:59:53,783 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:59:53" (1/1) ... [2022-11-21 16:59:53,785 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:59:53" (1/1) ... [2022-11-21 16:59:53,787 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:59:53" (1/1) ... [2022-11-21 16:59:53,790 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 16:59:53,791 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 16:59:53,791 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 16:59:53,791 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 16:59:53,792 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:59:53" (1/1) ... [2022-11-21 16:59:53,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:59:53,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c2c111-1589-493b-a5d3-f268e946aab0/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:59:53,823 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c2c111-1589-493b-a5d3-f268e946aab0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 16:59:53,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c2c111-1589-493b-a5d3-f268e946aab0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 16:59:53,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 16:59:53,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 16:59:53,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 16:59:53,878 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 16:59:53,878 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-21 16:59:53,878 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-21 16:59:53,878 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-21 16:59:53,880 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-21 16:59:53,881 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-21 16:59:53,882 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-21 16:59:53,882 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-21 16:59:53,882 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-21 16:59:53,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 16:59:53,883 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-11-21 16:59:53,883 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-11-21 16:59:53,883 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2022-11-21 16:59:53,883 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2022-11-21 16:59:53,883 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-21 16:59:53,883 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-21 16:59:53,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 16:59:53,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 16:59:53,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 16:59:53,886 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 16:59:54,048 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 16:59:54,051 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 16:59:54,555 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 16:59:54,636 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 16:59:54,636 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-21 16:59:54,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:59:54 BoogieIcfgContainer [2022-11-21 16:59:54,641 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 16:59:54,644 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 16:59:54,644 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 16:59:54,649 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 16:59:54,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 04:59:53" (1/3) ... [2022-11-21 16:59:54,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f457f1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:59:54, skipping insertion in model container [2022-11-21 16:59:54,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:59:53" (2/3) ... [2022-11-21 16:59:54,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f457f1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:59:54, skipping insertion in model container [2022-11-21 16:59:54,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:59:54" (3/3) ... [2022-11-21 16:59:54,655 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-barrier.wvr.c [2022-11-21 16:59:54,663 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 16:59:54,672 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 16:59:54,672 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 16:59:54,673 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 16:59:54,829 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2022-11-21 16:59:54,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 246 places, 235 transitions, 542 flow [2022-11-21 16:59:55,000 INFO L130 PetriNetUnfolder]: 8/207 cut-off events. [2022-11-21 16:59:55,000 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-21 16:59:55,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236 conditions, 207 events. 8/207 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 238 event pairs, 0 based on Foata normal form. 0/198 useless extension candidates. Maximal degree in co-relation 177. Up to 3 conditions per place. [2022-11-21 16:59:55,010 INFO L82 GeneralOperation]: Start removeDead. Operand has 246 places, 235 transitions, 542 flow [2022-11-21 16:59:55,016 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 209 places, 198 transitions, 444 flow [2022-11-21 16:59:55,026 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:59:55,039 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;@5ea00274, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:59:55,039 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-11-21 16:59:55,113 INFO L130 PetriNetUnfolder]: 8/197 cut-off events. [2022-11-21 16:59:55,114 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-21 16:59:55,114 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:59:55,115 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:59:55,115 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-21 16:59:55,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:59:55,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1133660532, now seen corresponding path program 1 times [2022-11-21 16:59:55,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:59:55,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642397944] [2022-11-21 16:59:55,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:59:55,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:59:55,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:59:56,426 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 16:59:56,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:59:56,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642397944] [2022-11-21 16:59:56,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642397944] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:59:56,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:59:56,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:59:56,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684727351] [2022-11-21 16:59:56,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:59:56,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:59:56,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:59:56,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:59:56,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:59:56,499 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 239 [2022-11-21 16:59:56,507 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 198 transitions, 444 flow. Second operand has 5 states, 5 states have (on average 202.6) internal successors, (1013), 5 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:59:56,508 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:59:56,508 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 239 [2022-11-21 16:59:56,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:59:57,074 INFO L130 PetriNetUnfolder]: 300/1160 cut-off events. [2022-11-21 16:59:57,074 INFO L131 PetriNetUnfolder]: For 372/372 co-relation queries the response was YES. [2022-11-21 16:59:57,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1986 conditions, 1160 events. 300/1160 cut-off events. For 372/372 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 6494 event pairs, 155 based on Foata normal form. 50/1092 useless extension candidates. Maximal degree in co-relation 1761. Up to 289 conditions per place. [2022-11-21 16:59:57,088 INFO L137 encePairwiseOnDemand]: 228/239 looper letters, 48 selfloop transitions, 6 changer transitions 3/221 dead transitions. [2022-11-21 16:59:57,089 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 221 transitions, 663 flow [2022-11-21 16:59:57,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:59:57,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:59:57,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1053 transitions. [2022-11-21 16:59:57,112 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8811715481171548 [2022-11-21 16:59:57,113 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1053 transitions. [2022-11-21 16:59:57,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1053 transitions. [2022-11-21 16:59:57,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:59:57,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1053 transitions. [2022-11-21 16:59:57,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 210.6) internal successors, (1053), 5 states have internal predecessors, (1053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:59:57,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:59:57,140 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:59:57,142 INFO L175 Difference]: Start difference. First operand has 209 places, 198 transitions, 444 flow. Second operand 5 states and 1053 transitions. [2022-11-21 16:59:57,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 221 transitions, 663 flow [2022-11-21 16:59:57,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 221 transitions, 589 flow, removed 0 selfloop flow, removed 12 redundant places. [2022-11-21 16:59:57,160 INFO L231 Difference]: Finished difference. Result has 202 places, 191 transitions, 416 flow [2022-11-21 16:59:57,162 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=416, PETRI_PLACES=202, PETRI_TRANSITIONS=191} [2022-11-21 16:59:57,167 INFO L288 CegarLoopForPetriNet]: 209 programPoint places, -7 predicate places. [2022-11-21 16:59:57,168 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 191 transitions, 416 flow [2022-11-21 16:59:57,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 202.6) internal successors, (1013), 5 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:59:57,169 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:59:57,170 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:59:57,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 16:59:57,170 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-21 16:59:57,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:59:57,172 INFO L85 PathProgramCache]: Analyzing trace with hash 737518558, now seen corresponding path program 2 times [2022-11-21 16:59:57,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:59:57,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557828653] [2022-11-21 16:59:57,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:59:57,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:59:57,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:59:57,737 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 16:59:57,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:59:57,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557828653] [2022-11-21 16:59:57,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557828653] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:59:57,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:59:57,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:59:57,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383016800] [2022-11-21 16:59:57,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:59:57,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:59:57,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:59:57,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:59:57,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:59:57,743 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 239 [2022-11-21 16:59:57,745 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 191 transitions, 416 flow. Second operand has 5 states, 5 states have (on average 202.6) internal successors, (1013), 5 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:59:57,745 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:59:57,745 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 239 [2022-11-21 16:59:57,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:59:58,108 INFO L130 PetriNetUnfolder]: 264/1094 cut-off events. [2022-11-21 16:59:58,109 INFO L131 PetriNetUnfolder]: For 121/121 co-relation queries the response was YES. [2022-11-21 16:59:58,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1639 conditions, 1094 events. 264/1094 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 6033 event pairs, 107 based on Foata normal form. 20/1002 useless extension candidates. Maximal degree in co-relation 1236. Up to 258 conditions per place. [2022-11-21 16:59:58,119 INFO L137 encePairwiseOnDemand]: 232/239 looper letters, 48 selfloop transitions, 6 changer transitions 1/218 dead transitions. [2022-11-21 16:59:58,119 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 218 transitions, 607 flow [2022-11-21 16:59:58,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:59:58,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:59:58,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1046 transitions. [2022-11-21 16:59:58,123 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8753138075313808 [2022-11-21 16:59:58,123 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1046 transitions. [2022-11-21 16:59:58,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1046 transitions. [2022-11-21 16:59:58,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:59:58,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1046 transitions. [2022-11-21 16:59:58,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 209.2) internal successors, (1046), 5 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:59:58,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:59:58,131 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:59:58,131 INFO L175 Difference]: Start difference. First operand has 202 places, 191 transitions, 416 flow. Second operand 5 states and 1046 transitions. [2022-11-21 16:59:58,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 218 transitions, 607 flow [2022-11-21 16:59:58,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 218 transitions, 595 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-21 16:59:58,139 INFO L231 Difference]: Finished difference. Result has 200 places, 190 transitions, 420 flow [2022-11-21 16:59:58,139 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=420, PETRI_PLACES=200, PETRI_TRANSITIONS=190} [2022-11-21 16:59:58,140 INFO L288 CegarLoopForPetriNet]: 209 programPoint places, -9 predicate places. [2022-11-21 16:59:58,140 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 190 transitions, 420 flow [2022-11-21 16:59:58,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 202.6) internal successors, (1013), 5 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:59:58,141 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:59:58,142 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:59:58,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 16:59:58,142 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-21 16:59:58,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:59:58,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1671351611, now seen corresponding path program 1 times [2022-11-21 16:59:58,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:59:58,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429159057] [2022-11-21 16:59:58,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:59:58,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:59:58,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:59:58,588 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 16:59:58,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:59:58,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429159057] [2022-11-21 16:59:58,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429159057] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:59:58,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:59:58,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:59:58,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050327494] [2022-11-21 16:59:58,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:59:58,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:59:58,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:59:58,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:59:58,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:59:58,594 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 239 [2022-11-21 16:59:58,595 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 190 transitions, 420 flow. Second operand has 5 states, 5 states have (on average 202.6) internal successors, (1013), 5 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:59:58,596 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:59:58,596 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 239 [2022-11-21 16:59:58,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:59:58,995 INFO L130 PetriNetUnfolder]: 274/1085 cut-off events. [2022-11-21 16:59:58,995 INFO L131 PetriNetUnfolder]: For 147/147 co-relation queries the response was YES. [2022-11-21 16:59:59,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1675 conditions, 1085 events. 274/1085 cut-off events. For 147/147 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 6109 event pairs, 120 based on Foata normal form. 10/1011 useless extension candidates. Maximal degree in co-relation 1269. Up to 292 conditions per place. [2022-11-21 16:59:59,005 INFO L137 encePairwiseOnDemand]: 232/239 looper letters, 49 selfloop transitions, 6 changer transitions 0/218 dead transitions. [2022-11-21 16:59:59,005 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 218 transitions, 614 flow [2022-11-21 16:59:59,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:59:59,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:59:59,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1046 transitions. [2022-11-21 16:59:59,009 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8753138075313808 [2022-11-21 16:59:59,009 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1046 transitions. [2022-11-21 16:59:59,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1046 transitions. [2022-11-21 16:59:59,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:59:59,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1046 transitions. [2022-11-21 16:59:59,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 209.2) internal successors, (1046), 5 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:59:59,017 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:59:59,018 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:59:59,018 INFO L175 Difference]: Start difference. First operand has 200 places, 190 transitions, 420 flow. Second operand 5 states and 1046 transitions. [2022-11-21 16:59:59,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 218 transitions, 614 flow [2022-11-21 16:59:59,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 218 transitions, 602 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-21 16:59:59,023 INFO L231 Difference]: Finished difference. Result has 200 places, 190 transitions, 426 flow [2022-11-21 16:59:59,024 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=426, PETRI_PLACES=200, PETRI_TRANSITIONS=190} [2022-11-21 16:59:59,025 INFO L288 CegarLoopForPetriNet]: 209 programPoint places, -9 predicate places. [2022-11-21 16:59:59,025 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 190 transitions, 426 flow [2022-11-21 16:59:59,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 202.6) internal successors, (1013), 5 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:59:59,026 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:59:59,026 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:59:59,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 16:59:59,027 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-21 16:59:59,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:59:59,028 INFO L85 PathProgramCache]: Analyzing trace with hash 941894927, now seen corresponding path program 2 times [2022-11-21 16:59:59,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:59:59,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665383299] [2022-11-21 16:59:59,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:59:59,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:59:59,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:00:01,513 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 17:00:01,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:00:01,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665383299] [2022-11-21 17:00:01,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665383299] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:00:01,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:00:01,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-11-21 17:00:01,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426603955] [2022-11-21 17:00:01,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:00:01,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-21 17:00:01,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:00:01,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-21 17:00:01,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=717, Unknown=0, NotChecked=0, Total=812 [2022-11-21 17:00:01,524 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 239 [2022-11-21 17:00:01,531 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 190 transitions, 426 flow. Second operand has 29 states, 29 states have (on average 157.17241379310346) internal successors, (4558), 29 states have internal predecessors, (4558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:01,531 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:00:01,531 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 239 [2022-11-21 17:00:01,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:00:08,139 INFO L130 PetriNetUnfolder]: 5453/10826 cut-off events. [2022-11-21 17:00:08,140 INFO L131 PetriNetUnfolder]: For 1996/1996 co-relation queries the response was YES. [2022-11-21 17:00:08,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20522 conditions, 10826 events. 5453/10826 cut-off events. For 1996/1996 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 80538 event pairs, 775 based on Foata normal form. 1/10227 useless extension candidates. Maximal degree in co-relation 19491. Up to 3883 conditions per place. [2022-11-21 17:00:08,323 INFO L137 encePairwiseOnDemand]: 210/239 looper letters, 315 selfloop transitions, 129 changer transitions 23/590 dead transitions. [2022-11-21 17:00:08,325 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 590 transitions, 2423 flow [2022-11-21 17:00:08,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-21 17:00:08,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2022-11-21 17:00:08,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 7753 transitions. [2022-11-21 17:00:08,348 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6901985222113416 [2022-11-21 17:00:08,348 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 7753 transitions. [2022-11-21 17:00:08,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 7753 transitions. [2022-11-21 17:00:08,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:00:08,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 7753 transitions. [2022-11-21 17:00:08,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 164.95744680851064) internal successors, (7753), 47 states have internal predecessors, (7753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:08,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 239.0) internal successors, (11472), 48 states have internal predecessors, (11472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:08,417 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 239.0) internal successors, (11472), 48 states have internal predecessors, (11472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:08,418 INFO L175 Difference]: Start difference. First operand has 200 places, 190 transitions, 426 flow. Second operand 47 states and 7753 transitions. [2022-11-21 17:00:08,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 590 transitions, 2423 flow [2022-11-21 17:00:08,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 590 transitions, 2343 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-21 17:00:08,435 INFO L231 Difference]: Finished difference. Result has 273 places, 323 transitions, 1175 flow [2022-11-21 17:00:08,435 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=1175, PETRI_PLACES=273, PETRI_TRANSITIONS=323} [2022-11-21 17:00:08,437 INFO L288 CegarLoopForPetriNet]: 209 programPoint places, 64 predicate places. [2022-11-21 17:00:08,438 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 323 transitions, 1175 flow [2022-11-21 17:00:08,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 157.17241379310346) internal successors, (4558), 29 states have internal predecessors, (4558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:08,441 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:00:08,441 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:00:08,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 17:00:08,442 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-21 17:00:08,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:00:08,443 INFO L85 PathProgramCache]: Analyzing trace with hash -411446195, now seen corresponding path program 3 times [2022-11-21 17:00:08,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:00:08,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293334200] [2022-11-21 17:00:08,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:00:08,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:00:08,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:00:10,050 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 17:00:10,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:00:10,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293334200] [2022-11-21 17:00:10,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293334200] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:00:10,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:00:10,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-11-21 17:00:10,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867449313] [2022-11-21 17:00:10,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:00:10,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-21 17:00:10,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:00:10,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-21 17:00:10,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=501, Unknown=0, NotChecked=0, Total=552 [2022-11-21 17:00:10,056 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 239 [2022-11-21 17:00:10,060 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 323 transitions, 1175 flow. Second operand has 24 states, 24 states have (on average 165.375) internal successors, (3969), 24 states have internal predecessors, (3969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:10,061 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:00:10,061 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 239 [2022-11-21 17:00:10,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:00:17,506 INFO L130 PetriNetUnfolder]: 6889/13044 cut-off events. [2022-11-21 17:00:17,506 INFO L131 PetriNetUnfolder]: For 16007/16009 co-relation queries the response was YES. [2022-11-21 17:00:17,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35850 conditions, 13044 events. 6889/13044 cut-off events. For 16007/16009 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 98452 event pairs, 1526 based on Foata normal form. 1/12165 useless extension candidates. Maximal degree in co-relation 35798. Up to 5194 conditions per place. [2022-11-21 17:00:17,709 INFO L137 encePairwiseOnDemand]: 216/239 looper letters, 408 selfloop transitions, 174 changer transitions 20/737 dead transitions. [2022-11-21 17:00:17,709 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 737 transitions, 4176 flow [2022-11-21 17:00:17,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-11-21 17:00:17,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2022-11-21 17:00:17,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 8935 transitions. [2022-11-21 17:00:17,731 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.718941100740264 [2022-11-21 17:00:17,731 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 8935 transitions. [2022-11-21 17:00:17,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 8935 transitions. [2022-11-21 17:00:17,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:00:17,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 8935 transitions. [2022-11-21 17:00:17,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 171.82692307692307) internal successors, (8935), 52 states have internal predecessors, (8935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:17,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 239.0) internal successors, (12667), 53 states have internal predecessors, (12667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:17,792 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 239.0) internal successors, (12667), 53 states have internal predecessors, (12667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:17,793 INFO L175 Difference]: Start difference. First operand has 273 places, 323 transitions, 1175 flow. Second operand 52 states and 8935 transitions. [2022-11-21 17:00:17,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 737 transitions, 4176 flow [2022-11-21 17:00:17,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 737 transitions, 4150 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-21 17:00:17,918 INFO L231 Difference]: Finished difference. Result has 341 places, 475 transitions, 2584 flow [2022-11-21 17:00:17,919 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=1165, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=2584, PETRI_PLACES=341, PETRI_TRANSITIONS=475} [2022-11-21 17:00:17,922 INFO L288 CegarLoopForPetriNet]: 209 programPoint places, 132 predicate places. [2022-11-21 17:00:17,923 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 475 transitions, 2584 flow [2022-11-21 17:00:17,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 165.375) internal successors, (3969), 24 states have internal predecessors, (3969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:17,925 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:00:17,925 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:00:17,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 17:00:17,926 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-21 17:00:17,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:00:17,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1633156085, now seen corresponding path program 4 times [2022-11-21 17:00:17,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:00:17,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598264904] [2022-11-21 17:00:17,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:00:17,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:00:18,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:00:18,395 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 17:00:18,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:00:18,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598264904] [2022-11-21 17:00:18,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598264904] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:00:18,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:00:18,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 17:00:18,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387261472] [2022-11-21 17:00:18,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:00:18,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 17:00:18,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:00:18,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 17:00:18,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:00:18,400 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 239 [2022-11-21 17:00:18,401 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 475 transitions, 2584 flow. Second operand has 5 states, 5 states have (on average 202.6) internal successors, (1013), 5 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:18,401 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:00:18,401 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 239 [2022-11-21 17:00:18,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:00:20,526 INFO L130 PetriNetUnfolder]: 2285/6409 cut-off events. [2022-11-21 17:00:20,526 INFO L131 PetriNetUnfolder]: For 13936/14274 co-relation queries the response was YES. [2022-11-21 17:00:20,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17301 conditions, 6409 events. 2285/6409 cut-off events. For 13936/14274 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 55652 event pairs, 824 based on Foata normal form. 111/5871 useless extension candidates. Maximal degree in co-relation 17228. Up to 1712 conditions per place. [2022-11-21 17:00:20,732 INFO L137 encePairwiseOnDemand]: 232/239 looper letters, 49 selfloop transitions, 9 changer transitions 0/502 dead transitions. [2022-11-21 17:00:20,732 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 502 transitions, 2784 flow [2022-11-21 17:00:20,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:00:20,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 17:00:20,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1046 transitions. [2022-11-21 17:00:20,735 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8753138075313808 [2022-11-21 17:00:20,736 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1046 transitions. [2022-11-21 17:00:20,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1046 transitions. [2022-11-21 17:00:20,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:00:20,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1046 transitions. [2022-11-21 17:00:20,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 209.2) internal successors, (1046), 5 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:20,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:20,742 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:20,742 INFO L175 Difference]: Start difference. First operand has 341 places, 475 transitions, 2584 flow. Second operand 5 states and 1046 transitions. [2022-11-21 17:00:20,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 502 transitions, 2784 flow [2022-11-21 17:00:20,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 502 transitions, 2448 flow, removed 156 selfloop flow, removed 7 redundant places. [2022-11-21 17:00:20,961 INFO L231 Difference]: Finished difference. Result has 335 places, 474 transitions, 2267 flow [2022-11-21 17:00:20,962 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=2242, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2267, PETRI_PLACES=335, PETRI_TRANSITIONS=474} [2022-11-21 17:00:20,966 INFO L288 CegarLoopForPetriNet]: 209 programPoint places, 126 predicate places. [2022-11-21 17:00:20,966 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 474 transitions, 2267 flow [2022-11-21 17:00:20,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 202.6) internal successors, (1013), 5 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:20,967 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:00:20,967 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:00:20,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 17:00:20,968 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-21 17:00:20,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:00:20,968 INFO L85 PathProgramCache]: Analyzing trace with hash 563857897, now seen corresponding path program 1 times [2022-11-21 17:00:20,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:00:20,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088475185] [2022-11-21 17:00:20,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:00:20,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:00:21,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:00:23,020 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 17:00:23,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:00:23,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088475185] [2022-11-21 17:00:23,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088475185] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:00:23,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:00:23,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-11-21 17:00:23,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430994978] [2022-11-21 17:00:23,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:00:23,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-21 17:00:23,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:00:23,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-21 17:00:23,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=754, Unknown=0, NotChecked=0, Total=870 [2022-11-21 17:00:23,027 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 239 [2022-11-21 17:00:23,031 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 474 transitions, 2267 flow. Second operand has 30 states, 30 states have (on average 157.1) internal successors, (4713), 30 states have internal predecessors, (4713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:23,031 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:00:23,031 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 239 [2022-11-21 17:00:23,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:00:30,252 INFO L130 PetriNetUnfolder]: 7788/14899 cut-off events. [2022-11-21 17:00:30,252 INFO L131 PetriNetUnfolder]: For 37939/37939 co-relation queries the response was YES. [2022-11-21 17:00:30,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48404 conditions, 14899 events. 7788/14899 cut-off events. For 37939/37939 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 114770 event pairs, 2012 based on Foata normal form. 1/13841 useless extension candidates. Maximal degree in co-relation 47244. Up to 6945 conditions per place. [2022-11-21 17:00:30,508 INFO L137 encePairwiseOnDemand]: 210/239 looper letters, 486 selfloop transitions, 227 changer transitions 23/859 dead transitions. [2022-11-21 17:00:30,508 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 859 transitions, 6104 flow [2022-11-21 17:00:30,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-21 17:00:30,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2022-11-21 17:00:30,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 7877 transitions. [2022-11-21 17:00:30,522 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6866283124128313 [2022-11-21 17:00:30,522 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 7877 transitions. [2022-11-21 17:00:30,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 7877 transitions. [2022-11-21 17:00:30,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:00:30,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 7877 transitions. [2022-11-21 17:00:30,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 164.10416666666666) internal successors, (7877), 48 states have internal predecessors, (7877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:30,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 239.0) internal successors, (11711), 49 states have internal predecessors, (11711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:30,568 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 239.0) internal successors, (11711), 49 states have internal predecessors, (11711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:30,568 INFO L175 Difference]: Start difference. First operand has 335 places, 474 transitions, 2267 flow. Second operand 48 states and 7877 transitions. [2022-11-21 17:00:30,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 859 transitions, 6104 flow [2022-11-21 17:00:30,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 859 transitions, 6064 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-21 17:00:30,799 INFO L231 Difference]: Finished difference. Result has 404 places, 623 transitions, 4097 flow [2022-11-21 17:00:30,800 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=2249, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=4097, PETRI_PLACES=404, PETRI_TRANSITIONS=623} [2022-11-21 17:00:30,801 INFO L288 CegarLoopForPetriNet]: 209 programPoint places, 195 predicate places. [2022-11-21 17:00:30,801 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 623 transitions, 4097 flow [2022-11-21 17:00:30,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 157.1) internal successors, (4713), 30 states have internal predecessors, (4713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:30,802 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:00:30,803 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:00:30,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 17:00:30,803 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-21 17:00:30,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:00:30,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1550750107, now seen corresponding path program 2 times [2022-11-21 17:00:30,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:00:30,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536977654] [2022-11-21 17:00:30,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:00:30,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:00:31,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:00:32,533 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 17:00:32,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:00:32,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536977654] [2022-11-21 17:00:32,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536977654] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:00:32,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:00:32,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-11-21 17:00:32,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646356702] [2022-11-21 17:00:32,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:00:32,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-21 17:00:32,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:00:32,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-21 17:00:32,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=493, Unknown=0, NotChecked=0, Total=552 [2022-11-21 17:00:32,545 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 239 [2022-11-21 17:00:32,548 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 623 transitions, 4097 flow. Second operand has 24 states, 24 states have (on average 165.375) internal successors, (3969), 24 states have internal predecessors, (3969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:32,550 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:00:32,550 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 239 [2022-11-21 17:00:32,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:00:39,583 INFO L130 PetriNetUnfolder]: 7871/15243 cut-off events. [2022-11-21 17:00:39,583 INFO L131 PetriNetUnfolder]: For 63337/63371 co-relation queries the response was YES. [2022-11-21 17:00:39,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55221 conditions, 15243 events. 7871/15243 cut-off events. For 63337/63371 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 120986 event pairs, 1788 based on Foata normal form. 6/14103 useless extension candidates. Maximal degree in co-relation 55112. Up to 7105 conditions per place. [2022-11-21 17:00:40,082 INFO L137 encePairwiseOnDemand]: 216/239 looper letters, 583 selfloop transitions, 289 changer transitions 20/1031 dead transitions. [2022-11-21 17:00:40,082 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 1031 transitions, 8786 flow [2022-11-21 17:00:40,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-21 17:00:40,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2022-11-21 17:00:40,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 8599 transitions. [2022-11-21 17:00:40,094 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.719581589958159 [2022-11-21 17:00:40,094 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 8599 transitions. [2022-11-21 17:00:40,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 8599 transitions. [2022-11-21 17:00:40,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:00:40,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 8599 transitions. [2022-11-21 17:00:40,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 171.98) internal successors, (8599), 50 states have internal predecessors, (8599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:40,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 239.0) internal successors, (12189), 51 states have internal predecessors, (12189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:40,132 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 239.0) internal successors, (12189), 51 states have internal predecessors, (12189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:40,132 INFO L175 Difference]: Start difference. First operand has 404 places, 623 transitions, 4097 flow. Second operand 50 states and 8599 transitions. [2022-11-21 17:00:40,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 1031 transitions, 8786 flow [2022-11-21 17:00:40,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 1031 transitions, 8232 flow, removed 275 selfloop flow, removed 5 redundant places. [2022-11-21 17:00:40,673 INFO L231 Difference]: Finished difference. Result has 462 places, 766 transitions, 5844 flow [2022-11-21 17:00:40,674 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=3677, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=623, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=5844, PETRI_PLACES=462, PETRI_TRANSITIONS=766} [2022-11-21 17:00:40,675 INFO L288 CegarLoopForPetriNet]: 209 programPoint places, 253 predicate places. [2022-11-21 17:00:40,675 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 766 transitions, 5844 flow [2022-11-21 17:00:40,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 165.375) internal successors, (3969), 24 states have internal predecessors, (3969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:40,676 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:00:40,677 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:00:40,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 17:00:40,677 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-21 17:00:40,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:00:40,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1347911483, now seen corresponding path program 3 times [2022-11-21 17:00:40,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:00:40,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894825443] [2022-11-21 17:00:40,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:00:40,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:00:40,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:00:42,033 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 17:00:42,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:00:42,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894825443] [2022-11-21 17:00:42,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894825443] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:00:42,034 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:00:42,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-11-21 17:00:42,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300904378] [2022-11-21 17:00:42,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:00:42,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-21 17:00:42,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:00:42,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-21 17:00:42,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=494, Unknown=0, NotChecked=0, Total=552 [2022-11-21 17:00:42,039 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 239 [2022-11-21 17:00:42,042 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 766 transitions, 5844 flow. Second operand has 24 states, 24 states have (on average 165.375) internal successors, (3969), 24 states have internal predecessors, (3969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:42,042 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:00:42,042 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 239 [2022-11-21 17:00:42,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:00:49,132 INFO L130 PetriNetUnfolder]: 8380/16466 cut-off events. [2022-11-21 17:00:49,132 INFO L131 PetriNetUnfolder]: For 90834/90872 co-relation queries the response was YES. [2022-11-21 17:00:49,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62774 conditions, 16466 events. 8380/16466 cut-off events. For 90834/90872 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 134680 event pairs, 1704 based on Foata normal form. 10/15174 useless extension candidates. Maximal degree in co-relation 62644. Up to 7452 conditions per place. [2022-11-21 17:00:49,548 INFO L137 encePairwiseOnDemand]: 216/239 looper letters, 524 selfloop transitions, 328 changer transitions 15/1006 dead transitions. [2022-11-21 17:00:49,549 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 1006 transitions, 9290 flow [2022-11-21 17:00:49,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-21 17:00:49,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-21 17:00:49,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 5209 transitions. [2022-11-21 17:00:49,557 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7264993026499302 [2022-11-21 17:00:49,557 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 5209 transitions. [2022-11-21 17:00:49,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 5209 transitions. [2022-11-21 17:00:49,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:00:49,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 5209 transitions. [2022-11-21 17:00:49,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 173.63333333333333) internal successors, (5209), 30 states have internal predecessors, (5209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:49,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 239.0) internal successors, (7409), 31 states have internal predecessors, (7409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:49,578 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 239.0) internal successors, (7409), 31 states have internal predecessors, (7409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:49,578 INFO L175 Difference]: Start difference. First operand has 462 places, 766 transitions, 5844 flow. Second operand 30 states and 5209 transitions. [2022-11-21 17:00:49,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 1006 transitions, 9290 flow [2022-11-21 17:00:50,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 481 places, 1006 transitions, 8713 flow, removed 270 selfloop flow, removed 6 redundant places. [2022-11-21 17:00:50,378 INFO L231 Difference]: Finished difference. Result has 492 places, 819 transitions, 6656 flow [2022-11-21 17:00:50,379 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=5278, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=766, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=283, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=6656, PETRI_PLACES=492, PETRI_TRANSITIONS=819} [2022-11-21 17:00:50,379 INFO L288 CegarLoopForPetriNet]: 209 programPoint places, 283 predicate places. [2022-11-21 17:00:50,380 INFO L495 AbstractCegarLoop]: Abstraction has has 492 places, 819 transitions, 6656 flow [2022-11-21 17:00:50,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 165.375) internal successors, (3969), 24 states have internal predecessors, (3969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:50,381 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:00:50,381 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:00:50,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 17:00:50,381 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-21 17:00:50,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:00:50,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1629271279, now seen corresponding path program 4 times [2022-11-21 17:00:50,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:00:50,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799870023] [2022-11-21 17:00:50,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:00:50,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:00:50,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:00:51,785 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 17:00:51,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:00:51,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799870023] [2022-11-21 17:00:51,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799870023] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:00:51,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:00:51,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-11-21 17:00:51,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992684441] [2022-11-21 17:00:51,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:00:51,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-21 17:00:51,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:00:51,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-21 17:00:51,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=503, Unknown=0, NotChecked=0, Total=552 [2022-11-21 17:00:51,794 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 239 [2022-11-21 17:00:51,798 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 819 transitions, 6656 flow. Second operand has 24 states, 24 states have (on average 165.375) internal successors, (3969), 24 states have internal predecessors, (3969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:51,798 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:00:51,799 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 239 [2022-11-21 17:00:51,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:01:00,229 INFO L130 PetriNetUnfolder]: 9103/17734 cut-off events. [2022-11-21 17:01:00,229 INFO L131 PetriNetUnfolder]: For 121724/121754 co-relation queries the response was YES. [2022-11-21 17:01:00,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71445 conditions, 17734 events. 9103/17734 cut-off events. For 121724/121754 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 145114 event pairs, 2620 based on Foata normal form. 7/16226 useless extension candidates. Maximal degree in co-relation 71297. Up to 7780 conditions per place. [2022-11-21 17:01:00,724 INFO L137 encePairwiseOnDemand]: 216/239 looper letters, 689 selfloop transitions, 410 changer transitions 20/1258 dead transitions. [2022-11-21 17:01:00,724 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 538 places, 1258 transitions, 13170 flow [2022-11-21 17:01:00,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-21 17:01:00,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2022-11-21 17:01:00,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 8534 transitions. [2022-11-21 17:01:00,740 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7141422594142259 [2022-11-21 17:01:00,740 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 8534 transitions. [2022-11-21 17:01:00,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 8534 transitions. [2022-11-21 17:01:00,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:01:00,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 8534 transitions. [2022-11-21 17:01:00,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 170.68) internal successors, (8534), 50 states have internal predecessors, (8534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:01:00,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 239.0) internal successors, (12189), 51 states have internal predecessors, (12189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:01:00,778 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 239.0) internal successors, (12189), 51 states have internal predecessors, (12189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:01:00,778 INFO L175 Difference]: Start difference. First operand has 492 places, 819 transitions, 6656 flow. Second operand 50 states and 8534 transitions. [2022-11-21 17:01:00,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 538 places, 1258 transitions, 13170 flow [2022-11-21 17:01:01,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 528 places, 1258 transitions, 12537 flow, removed 180 selfloop flow, removed 10 redundant places. [2022-11-21 17:01:01,882 INFO L231 Difference]: Finished difference. Result has 546 places, 1041 transitions, 10059 flow [2022-11-21 17:01:01,883 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=6219, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=819, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=202, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=535, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=10059, PETRI_PLACES=546, PETRI_TRANSITIONS=1041} [2022-11-21 17:01:01,884 INFO L288 CegarLoopForPetriNet]: 209 programPoint places, 337 predicate places. [2022-11-21 17:01:01,884 INFO L495 AbstractCegarLoop]: Abstraction has has 546 places, 1041 transitions, 10059 flow [2022-11-21 17:01:01,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 165.375) internal successors, (3969), 24 states have internal predecessors, (3969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:01:01,885 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:01:01,885 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:01:01,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 17:01:01,886 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-21 17:01:01,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:01:01,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1489930603, now seen corresponding path program 5 times [2022-11-21 17:01:01,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:01:01,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179444615] [2022-11-21 17:01:01,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:01:01,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:01:01,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:01:03,094 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 17:01:03,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:01:03,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179444615] [2022-11-21 17:01:03,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179444615] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:01:03,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:01:03,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-11-21 17:01:03,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258444364] [2022-11-21 17:01:03,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:01:03,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-21 17:01:03,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:01:03,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-21 17:01:03,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=494, Unknown=0, NotChecked=0, Total=552 [2022-11-21 17:01:03,100 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 239 [2022-11-21 17:01:03,103 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 546 places, 1041 transitions, 10059 flow. Second operand has 24 states, 24 states have (on average 165.375) internal successors, (3969), 24 states have internal predecessors, (3969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:01:03,103 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:01:03,103 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 239 [2022-11-21 17:01:03,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:01:12,038 INFO L130 PetriNetUnfolder]: 9686/19003 cut-off events. [2022-11-21 17:01:12,039 INFO L131 PetriNetUnfolder]: For 142608/142659 co-relation queries the response was YES. [2022-11-21 17:01:12,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79583 conditions, 19003 events. 9686/19003 cut-off events. For 142608/142659 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 159351 event pairs, 2054 based on Foata normal form. 11/17361 useless extension candidates. Maximal degree in co-relation 79414. Up to 8564 conditions per place. [2022-11-21 17:01:12,532 INFO L137 encePairwiseOnDemand]: 216/239 looper letters, 655 selfloop transitions, 543 changer transitions 15/1352 dead transitions. [2022-11-21 17:01:12,532 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 582 places, 1352 transitions, 14823 flow [2022-11-21 17:01:12,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-21 17:01:12,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2022-11-21 17:01:12,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 7086 transitions. [2022-11-21 17:01:12,541 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.723135013776916 [2022-11-21 17:01:12,542 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 7086 transitions. [2022-11-21 17:01:12,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 7086 transitions. [2022-11-21 17:01:12,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:01:12,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 7086 transitions. [2022-11-21 17:01:12,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 172.82926829268294) internal successors, (7086), 41 states have internal predecessors, (7086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:01:12,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 239.0) internal successors, (10038), 42 states have internal predecessors, (10038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:01:12,565 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 239.0) internal successors, (10038), 42 states have internal predecessors, (10038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:01:12,565 INFO L175 Difference]: Start difference. First operand has 546 places, 1041 transitions, 10059 flow. Second operand 41 states and 7086 transitions. [2022-11-21 17:01:12,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 582 places, 1352 transitions, 14823 flow [2022-11-21 17:01:13,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 577 places, 1352 transitions, 14253 flow, removed 283 selfloop flow, removed 5 redundant places. [2022-11-21 17:01:13,744 INFO L231 Difference]: Finished difference. Result has 586 places, 1112 transitions, 11753 flow [2022-11-21 17:01:13,745 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=9515, PETRI_DIFFERENCE_MINUEND_PLACES=537, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1041, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=479, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=558, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=11753, PETRI_PLACES=586, PETRI_TRANSITIONS=1112} [2022-11-21 17:01:13,746 INFO L288 CegarLoopForPetriNet]: 209 programPoint places, 377 predicate places. [2022-11-21 17:01:13,746 INFO L495 AbstractCegarLoop]: Abstraction has has 586 places, 1112 transitions, 11753 flow [2022-11-21 17:01:13,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 165.375) internal successors, (3969), 24 states have internal predecessors, (3969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:01:13,747 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:01:13,748 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:01:13,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-21 17:01:13,748 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-21 17:01:13,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:01:13,749 INFO L85 PathProgramCache]: Analyzing trace with hash -396838997, now seen corresponding path program 6 times [2022-11-21 17:01:13,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:01:13,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011870871] [2022-11-21 17:01:13,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:01:13,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:01:13,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:01:15,675 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 17:01:15,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:01:15,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011870871] [2022-11-21 17:01:15,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011870871] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:01:15,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:01:15,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-11-21 17:01:15,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755013441] [2022-11-21 17:01:15,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:01:15,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-21 17:01:15,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:01:15,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-21 17:01:15,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=775, Unknown=0, NotChecked=0, Total=870 [2022-11-21 17:01:15,682 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 239 [2022-11-21 17:01:15,684 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 586 places, 1112 transitions, 11753 flow. Second operand has 30 states, 30 states have (on average 157.1) internal successors, (4713), 30 states have internal predecessors, (4713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:01:15,684 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:01:15,685 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 239 [2022-11-21 17:01:15,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:01:30,394 INFO L130 PetriNetUnfolder]: 12146/23352 cut-off events. [2022-11-21 17:01:30,394 INFO L131 PetriNetUnfolder]: For 205520/205520 co-relation queries the response was YES. [2022-11-21 17:01:30,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106087 conditions, 23352 events. 12146/23352 cut-off events. For 205520/205520 co-relation queries the response was YES. Maximal size of possible extension queue 649. Compared 196568 event pairs, 2698 based on Foata normal form. 1/21371 useless extension candidates. Maximal degree in co-relation 105906. Up to 9700 conditions per place. [2022-11-21 17:01:31,037 INFO L137 encePairwiseOnDemand]: 210/239 looper letters, 1018 selfloop transitions, 682 changer transitions 15/1838 dead transitions. [2022-11-21 17:01:31,038 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 644 places, 1838 transitions, 23455 flow [2022-11-21 17:01:31,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-11-21 17:01:31,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2022-11-21 17:01:31,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 10167 transitions. [2022-11-21 17:01:31,049 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6861249831286274 [2022-11-21 17:01:31,049 INFO L72 ComplementDD]: Start complementDD. Operand 62 states and 10167 transitions. [2022-11-21 17:01:31,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 62 states and 10167 transitions. [2022-11-21 17:01:31,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:01:31,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 62 states and 10167 transitions. [2022-11-21 17:01:31,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 63 states, 62 states have (on average 163.98387096774192) internal successors, (10167), 62 states have internal predecessors, (10167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:01:31,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 63 states, 63 states have (on average 239.0) internal successors, (15057), 63 states have internal predecessors, (15057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:01:31,083 INFO L81 ComplementDD]: Finished complementDD. Result has 63 states, 63 states have (on average 239.0) internal successors, (15057), 63 states have internal predecessors, (15057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:01:31,083 INFO L175 Difference]: Start difference. First operand has 586 places, 1112 transitions, 11753 flow. Second operand 62 states and 10167 transitions. [2022-11-21 17:01:31,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 644 places, 1838 transitions, 23455 flow [2022-11-21 17:01:32,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 628 places, 1838 transitions, 22076 flow, removed 258 selfloop flow, removed 16 redundant places. [2022-11-21 17:01:32,459 INFO L231 Difference]: Finished difference. Result has 655 places, 1524 transitions, 19265 flow [2022-11-21 17:01:32,460 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=10737, PETRI_DIFFERENCE_MINUEND_PLACES=567, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=330, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=712, PETRI_DIFFERENCE_SUBTRAHEND_STATES=62, PETRI_FLOW=19265, PETRI_PLACES=655, PETRI_TRANSITIONS=1524} [2022-11-21 17:01:32,460 INFO L288 CegarLoopForPetriNet]: 209 programPoint places, 446 predicate places. [2022-11-21 17:01:32,460 INFO L495 AbstractCegarLoop]: Abstraction has has 655 places, 1524 transitions, 19265 flow [2022-11-21 17:01:32,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 157.1) internal successors, (4713), 30 states have internal predecessors, (4713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:01:32,461 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:01:32,461 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:01:32,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-21 17:01:32,461 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-21 17:01:32,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:01:32,462 INFO L85 PathProgramCache]: Analyzing trace with hash -94784515, now seen corresponding path program 7 times [2022-11-21 17:01:32,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:01:32,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50374217] [2022-11-21 17:01:32,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:01:32,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:01:32,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat