./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-file-item-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7eca119-ac5d-42dd-bbd8-641a43be1ebe/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7eca119-ac5d-42dd-bbd8-641a43be1ebe/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7eca119-ac5d-42dd-bbd8-641a43be1ebe/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7eca119-ac5d-42dd-bbd8-641a43be1ebe/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-file-item-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7eca119-ac5d-42dd-bbd8-641a43be1ebe/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7eca119-ac5d-42dd-bbd8-641a43be1ebe/bin/uautomizer-tPACEb0tL8 --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 be2a0d1eee532c8ad9f827ec91fa18dbacb100bdaebd8afe9a7f9b56098458ea --- 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-e04fb08 [2022-11-16 12:47:20,568 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:47:20,570 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:47:20,601 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:47:20,604 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:47:20,608 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:47:20,611 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:47:20,616 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:47:20,618 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:47:20,621 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:47:20,622 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:47:20,623 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:47:20,623 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:47:20,624 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:47:20,625 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:47:20,626 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:47:20,627 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:47:20,628 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:47:20,629 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:47:20,631 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:47:20,633 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:47:20,634 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:47:20,635 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:47:20,636 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:47:20,639 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:47:20,639 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:47:20,640 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:47:20,641 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:47:20,641 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:47:20,642 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:47:20,642 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:47:20,643 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:47:20,644 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:47:20,645 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:47:20,646 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:47:20,646 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:47:20,647 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:47:20,647 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:47:20,647 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:47:20,648 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:47:20,649 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:47:20,650 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7eca119-ac5d-42dd-bbd8-641a43be1ebe/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 12:47:20,677 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:47:20,677 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:47:20,677 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:47:20,678 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:47:20,678 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:47:20,678 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:47:20,679 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:47:20,683 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:47:20,683 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:47:20,684 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:47:20,684 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:47:20,684 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:47:20,684 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:47:20,684 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:47:20,685 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:47:20,685 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:47:20,685 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:47:20,685 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:47:20,698 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:47:20,699 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:47:20,699 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:47:20,699 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:47:20,699 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:47:20,700 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:47:20,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:47:20,700 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:47:20,700 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:47:20,700 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:47:20,701 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:47:20,701 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:47:20,701 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:47:20,701 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:47:20,701 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:47:20,702 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_b7eca119-ac5d-42dd-bbd8-641a43be1ebe/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7eca119-ac5d-42dd-bbd8-641a43be1ebe/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be2a0d1eee532c8ad9f827ec91fa18dbacb100bdaebd8afe9a7f9b56098458ea [2022-11-16 12:47:21,012 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:47:21,034 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:47:21,037 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:47:21,039 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:47:21,039 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:47:21,041 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7eca119-ac5d-42dd-bbd8-641a43be1ebe/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/chl-file-item-subst.wvr.c [2022-11-16 12:47:21,125 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7eca119-ac5d-42dd-bbd8-641a43be1ebe/bin/uautomizer-tPACEb0tL8/data/6cc50a9b9/fba2881f868643b189a5c7b2f402dafc/FLAG08d42bf88 [2022-11-16 12:47:21,645 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:47:21,645 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7eca119-ac5d-42dd-bbd8-641a43be1ebe/sv-benchmarks/c/weaver/chl-file-item-subst.wvr.c [2022-11-16 12:47:21,656 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7eca119-ac5d-42dd-bbd8-641a43be1ebe/bin/uautomizer-tPACEb0tL8/data/6cc50a9b9/fba2881f868643b189a5c7b2f402dafc/FLAG08d42bf88 [2022-11-16 12:47:22,000 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7eca119-ac5d-42dd-bbd8-641a43be1ebe/bin/uautomizer-tPACEb0tL8/data/6cc50a9b9/fba2881f868643b189a5c7b2f402dafc [2022-11-16 12:47:22,003 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:47:22,006 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:47:22,011 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:47:22,011 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:47:22,016 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:47:22,016 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:47:22" (1/1) ... [2022-11-16 12:47:22,018 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b15eda3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:47:22, skipping insertion in model container [2022-11-16 12:47:22,018 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:47:22" (1/1) ... [2022-11-16 12:47:22,025 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:47:22,049 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:47:22,317 WARN L229 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_b7eca119-ac5d-42dd-bbd8-641a43be1ebe/sv-benchmarks/c/weaver/chl-file-item-subst.wvr.c[3015,3028] [2022-11-16 12:47:22,322 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:47:22,330 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:47:22,355 WARN L229 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_b7eca119-ac5d-42dd-bbd8-641a43be1ebe/sv-benchmarks/c/weaver/chl-file-item-subst.wvr.c[3015,3028] [2022-11-16 12:47:22,358 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:47:22,372 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:47:22,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:47:22 WrapperNode [2022-11-16 12:47:22,373 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:47:22,374 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:47:22,374 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:47:22,374 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:47:22,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:47:22" (1/1) ... [2022-11-16 12:47:22,390 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:47:22" (1/1) ... [2022-11-16 12:47:22,416 INFO L138 Inliner]: procedures = 23, calls = 31, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 197 [2022-11-16 12:47:22,417 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:47:22,417 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:47:22,418 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:47:22,418 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:47:22,427 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:47:22" (1/1) ... [2022-11-16 12:47:22,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:47:22" (1/1) ... [2022-11-16 12:47:22,430 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:47:22" (1/1) ... [2022-11-16 12:47:22,431 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:47:22" (1/1) ... [2022-11-16 12:47:22,436 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:47:22" (1/1) ... [2022-11-16 12:47:22,439 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:47:22" (1/1) ... [2022-11-16 12:47:22,440 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:47:22" (1/1) ... [2022-11-16 12:47:22,442 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:47:22" (1/1) ... [2022-11-16 12:47:22,445 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:47:22,446 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:47:22,446 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:47:22,446 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:47:22,453 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:47:22" (1/1) ... [2022-11-16 12:47:22,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:47:22,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7eca119-ac5d-42dd-bbd8-641a43be1ebe/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:47:22,497 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7eca119-ac5d-42dd-bbd8-641a43be1ebe/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:47:22,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7eca119-ac5d-42dd-bbd8-641a43be1ebe/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:47:22,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:47:22,551 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 12:47:22,551 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 12:47:22,551 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 12:47:22,552 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 12:47:22,552 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-16 12:47:22,552 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-16 12:47:22,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:47:22,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:47:22,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:47:22,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:47:22,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:47:22,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:47:22,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:47:22,555 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:47:22,710 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:47:22,713 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:47:23,150 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:47:23,161 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:47:23,161 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 12:47:23,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:47:23 BoogieIcfgContainer [2022-11-16 12:47:23,164 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:47:23,167 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:47:23,167 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:47:23,183 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:47:23,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:47:22" (1/3) ... [2022-11-16 12:47:23,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79074143 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:47:23, skipping insertion in model container [2022-11-16 12:47:23,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:47:22" (2/3) ... [2022-11-16 12:47:23,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79074143 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:47:23, skipping insertion in model container [2022-11-16 12:47:23,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:47:23" (3/3) ... [2022-11-16 12:47:23,186 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-file-item-subst.wvr.c [2022-11-16 12:47:23,196 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:47:23,207 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:47:23,207 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 12:47:23,208 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:47:23,340 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-16 12:47:23,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 246 places, 256 transitions, 536 flow [2022-11-16 12:47:23,618 INFO L130 PetriNetUnfolder]: 20/253 cut-off events. [2022-11-16 12:47:23,618 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 12:47:23,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 266 conditions, 253 events. 20/253 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 561 event pairs, 0 based on Foata normal form. 0/232 useless extension candidates. Maximal degree in co-relation 169. Up to 2 conditions per place. [2022-11-16 12:47:23,629 INFO L82 GeneralOperation]: Start removeDead. Operand has 246 places, 256 transitions, 536 flow [2022-11-16 12:47:23,641 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 232 places, 242 transitions, 502 flow [2022-11-16 12:47:23,665 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:47:23,674 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;@22815693, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:47:23,675 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-16 12:47:23,779 INFO L130 PetriNetUnfolder]: 20/241 cut-off events. [2022-11-16 12:47:23,780 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 12:47:23,780 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:47:23,781 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] [2022-11-16 12:47:23,782 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:47:23,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:47:23,790 INFO L85 PathProgramCache]: Analyzing trace with hash 290654998, now seen corresponding path program 1 times [2022-11-16 12:47:23,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:47:23,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512923722] [2022-11-16 12:47:23,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:23,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:47:24,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:25,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:47:25,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:47:25,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512923722] [2022-11-16 12:47:25,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512923722] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:47:25,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:47:25,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:47:25,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780643424] [2022-11-16 12:47:25,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:47:25,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:47:25,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:47:26,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:47:26,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:47:26,036 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 256 [2022-11-16 12:47:26,046 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 242 transitions, 502 flow. Second operand has 8 states, 8 states have (on average 218.0) internal successors, (1744), 8 states have internal predecessors, (1744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:26,046 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:47:26,046 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 256 [2022-11-16 12:47:26,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:47:27,335 INFO L130 PetriNetUnfolder]: 233/1293 cut-off events. [2022-11-16 12:47:27,335 INFO L131 PetriNetUnfolder]: For 245/245 co-relation queries the response was YES. [2022-11-16 12:47:27,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1760 conditions, 1293 events. 233/1293 cut-off events. For 245/245 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 9624 event pairs, 100 based on Foata normal form. 116/1277 useless extension candidates. Maximal degree in co-relation 1469. Up to 207 conditions per place. [2022-11-16 12:47:27,364 INFO L137 encePairwiseOnDemand]: 237/256 looper letters, 61 selfloop transitions, 12 changer transitions 23/298 dead transitions. [2022-11-16 12:47:27,364 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 298 transitions, 860 flow [2022-11-16 12:47:27,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 12:47:27,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-16 12:47:27,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3573 transitions. [2022-11-16 12:47:27,393 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.872314453125 [2022-11-16 12:47:27,394 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3573 transitions. [2022-11-16 12:47:27,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3573 transitions. [2022-11-16 12:47:27,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:47:27,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3573 transitions. [2022-11-16 12:47:27,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 223.3125) internal successors, (3573), 16 states have internal predecessors, (3573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:27,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 256.0) internal successors, (4352), 17 states have internal predecessors, (4352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:27,434 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 256.0) internal successors, (4352), 17 states have internal predecessors, (4352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:27,436 INFO L175 Difference]: Start difference. First operand has 232 places, 242 transitions, 502 flow. Second operand 16 states and 3573 transitions. [2022-11-16 12:47:27,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 298 transitions, 860 flow [2022-11-16 12:47:27,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 298 transitions, 812 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-16 12:47:27,454 INFO L231 Difference]: Finished difference. Result has 251 places, 243 transitions, 559 flow [2022-11-16 12:47:27,456 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=559, PETRI_PLACES=251, PETRI_TRANSITIONS=243} [2022-11-16 12:47:27,460 INFO L288 CegarLoopForPetriNet]: 232 programPoint places, 19 predicate places. [2022-11-16 12:47:27,460 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 243 transitions, 559 flow [2022-11-16 12:47:27,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 218.0) internal successors, (1744), 8 states have internal predecessors, (1744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:27,462 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:47:27,462 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:47:27,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:47:27,462 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:47:27,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:47:27,464 INFO L85 PathProgramCache]: Analyzing trace with hash -305941234, now seen corresponding path program 2 times [2022-11-16 12:47:27,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:47:27,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316759421] [2022-11-16 12:47:27,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:27,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:47:27,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:28,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:47:28,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:47:28,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316759421] [2022-11-16 12:47:28,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316759421] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:47:28,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:47:28,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:47:28,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382230609] [2022-11-16 12:47:28,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:47:28,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:47:28,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:47:28,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:47:28,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:47:28,284 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 256 [2022-11-16 12:47:28,287 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 243 transitions, 559 flow. Second operand has 8 states, 8 states have (on average 218.0) internal successors, (1744), 8 states have internal predecessors, (1744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:28,287 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:47:28,287 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 256 [2022-11-16 12:47:28,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:47:28,995 INFO L130 PetriNetUnfolder]: 252/1342 cut-off events. [2022-11-16 12:47:28,996 INFO L131 PetriNetUnfolder]: For 330/330 co-relation queries the response was YES. [2022-11-16 12:47:29,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2075 conditions, 1342 events. 252/1342 cut-off events. For 330/330 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 10035 event pairs, 120 based on Foata normal form. 1/1214 useless extension candidates. Maximal degree in co-relation 2052. Up to 289 conditions per place. [2022-11-16 12:47:29,015 INFO L137 encePairwiseOnDemand]: 247/256 looper letters, 45 selfloop transitions, 19 changer transitions 12/278 dead transitions. [2022-11-16 12:47:29,015 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 278 transitions, 855 flow [2022-11-16 12:47:29,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:47:29,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 12:47:29,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2433 transitions. [2022-11-16 12:47:29,020 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8639914772727273 [2022-11-16 12:47:29,021 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2433 transitions. [2022-11-16 12:47:29,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2433 transitions. [2022-11-16 12:47:29,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:47:29,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2433 transitions. [2022-11-16 12:47:29,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 221.1818181818182) internal successors, (2433), 11 states have internal predecessors, (2433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:29,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 256.0) internal successors, (3072), 12 states have internal predecessors, (3072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:29,035 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 256.0) internal successors, (3072), 12 states have internal predecessors, (3072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:29,035 INFO L175 Difference]: Start difference. First operand has 251 places, 243 transitions, 559 flow. Second operand 11 states and 2433 transitions. [2022-11-16 12:47:29,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 278 transitions, 855 flow [2022-11-16 12:47:29,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 278 transitions, 849 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-11-16 12:47:29,045 INFO L231 Difference]: Finished difference. Result has 260 places, 254 transitions, 704 flow [2022-11-16 12:47:29,045 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=555, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=704, PETRI_PLACES=260, PETRI_TRANSITIONS=254} [2022-11-16 12:47:29,046 INFO L288 CegarLoopForPetriNet]: 232 programPoint places, 28 predicate places. [2022-11-16 12:47:29,046 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 254 transitions, 704 flow [2022-11-16 12:47:29,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 218.0) internal successors, (1744), 8 states have internal predecessors, (1744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:29,047 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:47:29,048 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] [2022-11-16 12:47:29,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:47:29,048 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:47:29,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:47:29,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1569848786, now seen corresponding path program 3 times [2022-11-16 12:47:29,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:47:29,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846371160] [2022-11-16 12:47:29,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:29,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:47:29,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:29,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:47:29,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:47:29,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846371160] [2022-11-16 12:47:29,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846371160] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:47:29,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:47:29,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:47:29,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281718614] [2022-11-16 12:47:29,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:47:29,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:47:29,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:47:29,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:47:29,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:47:29,946 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 256 [2022-11-16 12:47:29,948 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 254 transitions, 704 flow. Second operand has 8 states, 8 states have (on average 218.0) internal successors, (1744), 8 states have internal predecessors, (1744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:29,948 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:47:29,948 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 256 [2022-11-16 12:47:29,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:47:30,874 INFO L130 PetriNetUnfolder]: 324/1622 cut-off events. [2022-11-16 12:47:30,875 INFO L131 PetriNetUnfolder]: For 1187/1187 co-relation queries the response was YES. [2022-11-16 12:47:30,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2956 conditions, 1622 events. 324/1622 cut-off events. For 1187/1187 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 13050 event pairs, 152 based on Foata normal form. 1/1476 useless extension candidates. Maximal degree in co-relation 2926. Up to 367 conditions per place. [2022-11-16 12:47:30,895 INFO L137 encePairwiseOnDemand]: 247/256 looper letters, 59 selfloop transitions, 20 changer transitions 13/294 dead transitions. [2022-11-16 12:47:30,895 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 294 transitions, 1105 flow [2022-11-16 12:47:30,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:47:30,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 12:47:30,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2435 transitions. [2022-11-16 12:47:30,901 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8647017045454546 [2022-11-16 12:47:30,901 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2435 transitions. [2022-11-16 12:47:30,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2435 transitions. [2022-11-16 12:47:30,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:47:30,903 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2435 transitions. [2022-11-16 12:47:30,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 221.36363636363637) internal successors, (2435), 11 states have internal predecessors, (2435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:30,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 256.0) internal successors, (3072), 12 states have internal predecessors, (3072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:30,913 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 256.0) internal successors, (3072), 12 states have internal predecessors, (3072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:30,914 INFO L175 Difference]: Start difference. First operand has 260 places, 254 transitions, 704 flow. Second operand 11 states and 2435 transitions. [2022-11-16 12:47:30,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 294 transitions, 1105 flow [2022-11-16 12:47:30,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 294 transitions, 1067 flow, removed 13 selfloop flow, removed 3 redundant places. [2022-11-16 12:47:30,931 INFO L231 Difference]: Finished difference. Result has 273 places, 266 transitions, 870 flow [2022-11-16 12:47:30,932 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=680, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=870, PETRI_PLACES=273, PETRI_TRANSITIONS=266} [2022-11-16 12:47:30,933 INFO L288 CegarLoopForPetriNet]: 232 programPoint places, 41 predicate places. [2022-11-16 12:47:30,933 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 266 transitions, 870 flow [2022-11-16 12:47:30,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 218.0) internal successors, (1744), 8 states have internal predecessors, (1744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:30,934 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:47:30,934 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] [2022-11-16 12:47:30,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:47:30,934 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:47:30,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:47:30,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1818609714, now seen corresponding path program 4 times [2022-11-16 12:47:30,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:47:30,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492977953] [2022-11-16 12:47:30,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:30,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:47:30,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:31,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:47:31,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:47:31,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492977953] [2022-11-16 12:47:31,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492977953] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:47:31,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:47:31,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:47:31,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001822209] [2022-11-16 12:47:31,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:47:31,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:47:31,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:47:31,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:47:31,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:47:31,772 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 256 [2022-11-16 12:47:31,774 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 266 transitions, 870 flow. Second operand has 8 states, 8 states have (on average 218.0) internal successors, (1744), 8 states have internal predecessors, (1744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:31,775 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:47:31,775 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 256 [2022-11-16 12:47:31,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:47:33,026 INFO L130 PetriNetUnfolder]: 337/1935 cut-off events. [2022-11-16 12:47:33,027 INFO L131 PetriNetUnfolder]: For 2225/2225 co-relation queries the response was YES. [2022-11-16 12:47:33,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3678 conditions, 1935 events. 337/1935 cut-off events. For 2225/2225 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 16987 event pairs, 161 based on Foata normal form. 1/1797 useless extension candidates. Maximal degree in co-relation 3632. Up to 304 conditions per place. [2022-11-16 12:47:33,056 INFO L137 encePairwiseOnDemand]: 247/256 looper letters, 80 selfloop transitions, 29 changer transitions 16/327 dead transitions. [2022-11-16 12:47:33,057 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 327 transitions, 1439 flow [2022-11-16 12:47:33,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:47:33,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 12:47:33,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2884 transitions. [2022-11-16 12:47:33,063 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8665865384615384 [2022-11-16 12:47:33,063 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2884 transitions. [2022-11-16 12:47:33,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2884 transitions. [2022-11-16 12:47:33,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:47:33,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2884 transitions. [2022-11-16 12:47:33,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 221.84615384615384) internal successors, (2884), 13 states have internal predecessors, (2884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:33,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 256.0) internal successors, (3584), 14 states have internal predecessors, (3584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:33,079 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 256.0) internal successors, (3584), 14 states have internal predecessors, (3584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:33,079 INFO L175 Difference]: Start difference. First operand has 273 places, 266 transitions, 870 flow. Second operand 13 states and 2884 transitions. [2022-11-16 12:47:33,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 327 transitions, 1439 flow [2022-11-16 12:47:33,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 327 transitions, 1337 flow, removed 51 selfloop flow, removed 2 redundant places. [2022-11-16 12:47:33,104 INFO L231 Difference]: Finished difference. Result has 291 places, 276 transitions, 1027 flow [2022-11-16 12:47:33,104 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=806, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1027, PETRI_PLACES=291, PETRI_TRANSITIONS=276} [2022-11-16 12:47:33,105 INFO L288 CegarLoopForPetriNet]: 232 programPoint places, 59 predicate places. [2022-11-16 12:47:33,105 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 276 transitions, 1027 flow [2022-11-16 12:47:33,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 218.0) internal successors, (1744), 8 states have internal predecessors, (1744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:33,107 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:47:33,107 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] [2022-11-16 12:47:33,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:47:33,107 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:47:33,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:47:33,108 INFO L85 PathProgramCache]: Analyzing trace with hash -629299502, now seen corresponding path program 5 times [2022-11-16 12:47:33,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:47:33,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388094067] [2022-11-16 12:47:33,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:33,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:47:33,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:34,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:47:34,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:47:34,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388094067] [2022-11-16 12:47:34,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388094067] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:47:34,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:47:34,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:47:34,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249262797] [2022-11-16 12:47:34,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:47:34,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:47:34,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:47:34,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:47:34,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:47:34,039 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 256 [2022-11-16 12:47:34,042 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 276 transitions, 1027 flow. Second operand has 8 states, 8 states have (on average 218.0) internal successors, (1744), 8 states have internal predecessors, (1744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:34,042 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:47:34,042 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 256 [2022-11-16 12:47:34,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:47:34,852 INFO L130 PetriNetUnfolder]: 333/1830 cut-off events. [2022-11-16 12:47:34,852 INFO L131 PetriNetUnfolder]: For 2441/2441 co-relation queries the response was YES. [2022-11-16 12:47:34,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3697 conditions, 1830 events. 333/1830 cut-off events. For 2441/2441 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 15923 event pairs, 183 based on Foata normal form. 1/1689 useless extension candidates. Maximal degree in co-relation 3642. Up to 440 conditions per place. [2022-11-16 12:47:34,885 INFO L137 encePairwiseOnDemand]: 247/256 looper letters, 59 selfloop transitions, 29 changer transitions 18/308 dead transitions. [2022-11-16 12:47:34,885 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 308 transitions, 1425 flow [2022-11-16 12:47:34,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 12:47:34,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-16 12:47:34,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2652 transitions. [2022-11-16 12:47:34,892 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.86328125 [2022-11-16 12:47:34,892 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2652 transitions. [2022-11-16 12:47:34,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2652 transitions. [2022-11-16 12:47:34,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:47:34,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2652 transitions. [2022-11-16 12:47:34,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 221.0) internal successors, (2652), 12 states have internal predecessors, (2652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:34,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 256.0) internal successors, (3328), 13 states have internal predecessors, (3328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:34,908 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 256.0) internal successors, (3328), 13 states have internal predecessors, (3328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:34,908 INFO L175 Difference]: Start difference. First operand has 291 places, 276 transitions, 1027 flow. Second operand 12 states and 2652 transitions. [2022-11-16 12:47:34,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 308 transitions, 1425 flow [2022-11-16 12:47:34,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 308 transitions, 1395 flow, removed 13 selfloop flow, removed 3 redundant places. [2022-11-16 12:47:34,939 INFO L231 Difference]: Finished difference. Result has 303 places, 282 transitions, 1180 flow [2022-11-16 12:47:34,939 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=1003, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1180, PETRI_PLACES=303, PETRI_TRANSITIONS=282} [2022-11-16 12:47:34,942 INFO L288 CegarLoopForPetriNet]: 232 programPoint places, 71 predicate places. [2022-11-16 12:47:34,943 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 282 transitions, 1180 flow [2022-11-16 12:47:34,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 218.0) internal successors, (1744), 8 states have internal predecessors, (1744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:34,960 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:47:34,960 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] [2022-11-16 12:47:34,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:47:34,961 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:47:34,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:47:34,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1288119502, now seen corresponding path program 6 times [2022-11-16 12:47:34,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:47:34,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512224678] [2022-11-16 12:47:34,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:34,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:47:35,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:35,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:47:35,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:47:35,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512224678] [2022-11-16 12:47:35,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512224678] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:47:35,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:47:35,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:47:35,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860314923] [2022-11-16 12:47:35,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:47:35,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:47:35,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:47:35,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:47:35,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:47:35,754 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 256 [2022-11-16 12:47:35,756 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 282 transitions, 1180 flow. Second operand has 8 states, 8 states have (on average 218.0) internal successors, (1744), 8 states have internal predecessors, (1744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:35,756 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:47:35,757 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 256 [2022-11-16 12:47:35,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:47:36,561 INFO L130 PetriNetUnfolder]: 339/1884 cut-off events. [2022-11-16 12:47:36,563 INFO L131 PetriNetUnfolder]: For 2763/2763 co-relation queries the response was YES. [2022-11-16 12:47:36,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3857 conditions, 1884 events. 339/1884 cut-off events. For 2763/2763 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 16517 event pairs, 182 based on Foata normal form. 1/1735 useless extension candidates. Maximal degree in co-relation 3803. Up to 427 conditions per place. [2022-11-16 12:47:36,587 INFO L137 encePairwiseOnDemand]: 247/256 looper letters, 61 selfloop transitions, 32 changer transitions 17/312 dead transitions. [2022-11-16 12:47:36,588 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 312 transitions, 1568 flow [2022-11-16 12:47:36,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 12:47:36,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-16 12:47:36,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2651 transitions. [2022-11-16 12:47:36,595 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8629557291666666 [2022-11-16 12:47:36,595 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2651 transitions. [2022-11-16 12:47:36,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2651 transitions. [2022-11-16 12:47:36,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:47:36,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2651 transitions. [2022-11-16 12:47:36,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 220.91666666666666) internal successors, (2651), 12 states have internal predecessors, (2651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:36,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 256.0) internal successors, (3328), 13 states have internal predecessors, (3328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:36,608 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 256.0) internal successors, (3328), 13 states have internal predecessors, (3328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:36,609 INFO L175 Difference]: Start difference. First operand has 303 places, 282 transitions, 1180 flow. Second operand 12 states and 2651 transitions. [2022-11-16 12:47:36,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 312 transitions, 1568 flow [2022-11-16 12:47:36,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 312 transitions, 1508 flow, removed 19 selfloop flow, removed 4 redundant places. [2022-11-16 12:47:36,640 INFO L231 Difference]: Finished difference. Result has 314 places, 288 transitions, 1312 flow [2022-11-16 12:47:36,640 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=1125, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1312, PETRI_PLACES=314, PETRI_TRANSITIONS=288} [2022-11-16 12:47:36,643 INFO L288 CegarLoopForPetriNet]: 232 programPoint places, 82 predicate places. [2022-11-16 12:47:36,643 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 288 transitions, 1312 flow [2022-11-16 12:47:36,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 218.0) internal successors, (1744), 8 states have internal predecessors, (1744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:36,644 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:47:36,644 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] [2022-11-16 12:47:36,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:47:36,644 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:47:36,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:47:36,645 INFO L85 PathProgramCache]: Analyzing trace with hash -191510492, now seen corresponding path program 1 times [2022-11-16 12:47:36,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:47:36,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133860203] [2022-11-16 12:47:36,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:36,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:47:36,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:36,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:47:36,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:47:36,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133860203] [2022-11-16 12:47:36,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133860203] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:47:36,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:47:36,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:47:36,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697118737] [2022-11-16 12:47:36,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:47:36,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:47:36,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:47:36,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:47:36,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:47:36,921 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 256 [2022-11-16 12:47:36,923 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 288 transitions, 1312 flow. Second operand has 7 states, 7 states have (on average 223.0) internal successors, (1561), 7 states have internal predecessors, (1561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:36,923 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:47:36,923 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 256 [2022-11-16 12:47:36,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:47:37,724 INFO L130 PetriNetUnfolder]: 242/3181 cut-off events. [2022-11-16 12:47:37,725 INFO L131 PetriNetUnfolder]: For 5513/5707 co-relation queries the response was YES. [2022-11-16 12:47:37,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6546 conditions, 3181 events. 242/3181 cut-off events. For 5513/5707 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 34083 event pairs, 34 based on Foata normal form. 4/2987 useless extension candidates. Maximal degree in co-relation 6468. Up to 139 conditions per place. [2022-11-16 12:47:37,776 INFO L137 encePairwiseOnDemand]: 245/256 looper letters, 57 selfloop transitions, 15 changer transitions 4/339 dead transitions. [2022-11-16 12:47:37,777 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 339 transitions, 1613 flow [2022-11-16 12:47:37,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:47:37,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:47:37,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2057 transitions. [2022-11-16 12:47:37,782 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8927951388888888 [2022-11-16 12:47:37,782 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2057 transitions. [2022-11-16 12:47:37,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2057 transitions. [2022-11-16 12:47:37,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:47:37,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2057 transitions. [2022-11-16 12:47:37,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 228.55555555555554) internal successors, (2057), 9 states have internal predecessors, (2057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:37,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 256.0) internal successors, (2560), 10 states have internal predecessors, (2560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:37,851 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 256.0) internal successors, (2560), 10 states have internal predecessors, (2560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:37,851 INFO L175 Difference]: Start difference. First operand has 314 places, 288 transitions, 1312 flow. Second operand 9 states and 2057 transitions. [2022-11-16 12:47:37,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 339 transitions, 1613 flow [2022-11-16 12:47:37,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 339 transitions, 1543 flow, removed 24 selfloop flow, removed 4 redundant places. [2022-11-16 12:47:37,906 INFO L231 Difference]: Finished difference. Result has 322 places, 304 transitions, 1361 flow [2022-11-16 12:47:37,907 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=1250, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1361, PETRI_PLACES=322, PETRI_TRANSITIONS=304} [2022-11-16 12:47:37,907 INFO L288 CegarLoopForPetriNet]: 232 programPoint places, 90 predicate places. [2022-11-16 12:47:37,908 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 304 transitions, 1361 flow [2022-11-16 12:47:37,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 223.0) internal successors, (1561), 7 states have internal predecessors, (1561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:37,908 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:47:37,909 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] [2022-11-16 12:47:37,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:47:37,909 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:47:37,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:47:37,910 INFO L85 PathProgramCache]: Analyzing trace with hash -209487590, now seen corresponding path program 1 times [2022-11-16 12:47:37,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:47:37,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134859312] [2022-11-16 12:47:37,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:37,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:47:37,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:37,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:47:37,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:47:37,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134859312] [2022-11-16 12:47:37,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134859312] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:47:37,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:47:37,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:47:37,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997078822] [2022-11-16 12:47:37,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:47:37,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:47:37,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:47:37,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:47:37,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:47:37,981 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 256 [2022-11-16 12:47:37,982 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 304 transitions, 1361 flow. Second operand has 3 states, 3 states have (on average 238.33333333333334) internal successors, (715), 3 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:37,982 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:47:37,982 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 256 [2022-11-16 12:47:37,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:47:38,925 INFO L130 PetriNetUnfolder]: 306/4086 cut-off events. [2022-11-16 12:47:38,925 INFO L131 PetriNetUnfolder]: For 6343/6533 co-relation queries the response was YES. [2022-11-16 12:47:38,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8534 conditions, 4086 events. 306/4086 cut-off events. For 6343/6533 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 47675 event pairs, 35 based on Foata normal form. 1/3879 useless extension candidates. Maximal degree in co-relation 8272. Up to 197 conditions per place. [2022-11-16 12:47:38,989 INFO L137 encePairwiseOnDemand]: 252/256 looper letters, 17 selfloop transitions, 2 changer transitions 0/311 dead transitions. [2022-11-16 12:47:38,990 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 311 transitions, 1418 flow [2022-11-16 12:47:38,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:47:38,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:47:38,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 726 transitions. [2022-11-16 12:47:38,996 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9453125 [2022-11-16 12:47:38,996 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 726 transitions. [2022-11-16 12:47:38,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 726 transitions. [2022-11-16 12:47:38,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:47:38,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 726 transitions. [2022-11-16 12:47:38,999 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 242.0) internal successors, (726), 3 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:39,001 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:39,001 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:39,001 INFO L175 Difference]: Start difference. First operand has 322 places, 304 transitions, 1361 flow. Second operand 3 states and 726 transitions. [2022-11-16 12:47:39,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 311 transitions, 1418 flow [2022-11-16 12:47:39,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 311 transitions, 1414 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-16 12:47:39,080 INFO L231 Difference]: Finished difference. Result has 322 places, 306 transitions, 1377 flow [2022-11-16 12:47:39,080 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=1357, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1377, PETRI_PLACES=322, PETRI_TRANSITIONS=306} [2022-11-16 12:47:39,081 INFO L288 CegarLoopForPetriNet]: 232 programPoint places, 90 predicate places. [2022-11-16 12:47:39,082 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 306 transitions, 1377 flow [2022-11-16 12:47:39,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 238.33333333333334) internal successors, (715), 3 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:39,082 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:47:39,082 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] [2022-11-16 12:47:39,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:47:39,083 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:47:39,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:47:39,084 INFO L85 PathProgramCache]: Analyzing trace with hash -736310896, now seen corresponding path program 2 times [2022-11-16 12:47:39,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:47:39,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646494587] [2022-11-16 12:47:39,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:39,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:47:39,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:39,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:47:39,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:47:39,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646494587] [2022-11-16 12:47:39,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646494587] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:47:39,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:47:39,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:47:39,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965802648] [2022-11-16 12:47:39,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:47:39,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:47:39,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:47:39,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:47:39,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:47:39,325 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 256 [2022-11-16 12:47:39,326 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 306 transitions, 1377 flow. Second operand has 7 states, 7 states have (on average 223.0) internal successors, (1561), 7 states have internal predecessors, (1561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:39,327 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:47:39,327 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 256 [2022-11-16 12:47:39,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:47:40,406 INFO L130 PetriNetUnfolder]: 312/3983 cut-off events. [2022-11-16 12:47:40,406 INFO L131 PetriNetUnfolder]: For 6502/6870 co-relation queries the response was YES. [2022-11-16 12:47:40,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8386 conditions, 3983 events. 312/3983 cut-off events. For 6502/6870 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 46635 event pairs, 61 based on Foata normal form. 18/3768 useless extension candidates. Maximal degree in co-relation 7976. Up to 298 conditions per place. [2022-11-16 12:47:40,455 INFO L137 encePairwiseOnDemand]: 244/256 looper letters, 54 selfloop transitions, 10 changer transitions 4/333 dead transitions. [2022-11-16 12:47:40,455 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 333 transitions, 1616 flow [2022-11-16 12:47:40,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:47:40,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 12:47:40,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1815 transitions. [2022-11-16 12:47:40,460 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.88623046875 [2022-11-16 12:47:40,460 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1815 transitions. [2022-11-16 12:47:40,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1815 transitions. [2022-11-16 12:47:40,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:47:40,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1815 transitions. [2022-11-16 12:47:40,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 226.875) internal successors, (1815), 8 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:40,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 256.0) internal successors, (2304), 9 states have internal predecessors, (2304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:40,469 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 256.0) internal successors, (2304), 9 states have internal predecessors, (2304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:40,469 INFO L175 Difference]: Start difference. First operand has 322 places, 306 transitions, 1377 flow. Second operand 8 states and 1815 transitions. [2022-11-16 12:47:40,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 333 transitions, 1616 flow [2022-11-16 12:47:40,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 333 transitions, 1614 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:47:40,526 INFO L231 Difference]: Finished difference. Result has 335 places, 311 transitions, 1461 flow [2022-11-16 12:47:40,527 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=1375, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1461, PETRI_PLACES=335, PETRI_TRANSITIONS=311} [2022-11-16 12:47:40,527 INFO L288 CegarLoopForPetriNet]: 232 programPoint places, 103 predicate places. [2022-11-16 12:47:40,528 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 311 transitions, 1461 flow [2022-11-16 12:47:40,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 223.0) internal successors, (1561), 7 states have internal predecessors, (1561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:40,528 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:47:40,529 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] [2022-11-16 12:47:40,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:47:40,529 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:47:40,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:47:40,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1025328832, now seen corresponding path program 2 times [2022-11-16 12:47:40,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:47:40,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712101493] [2022-11-16 12:47:40,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:40,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:47:40,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:40,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:47:40,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:47:40,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712101493] [2022-11-16 12:47:40,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712101493] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:47:40,577 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:47:40,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:47:40,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927095456] [2022-11-16 12:47:40,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:47:40,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:47:40,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:47:40,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:47:40,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:47:40,580 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 256 [2022-11-16 12:47:40,581 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 311 transitions, 1461 flow. Second operand has 3 states, 3 states have (on average 238.33333333333334) internal successors, (715), 3 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:40,581 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:47:40,581 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 256 [2022-11-16 12:47:40,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:47:41,408 INFO L130 PetriNetUnfolder]: 203/2904 cut-off events. [2022-11-16 12:47:41,408 INFO L131 PetriNetUnfolder]: For 3956/4027 co-relation queries the response was YES. [2022-11-16 12:47:41,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6047 conditions, 2904 events. 203/2904 cut-off events. For 3956/4027 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 30401 event pairs, 31 based on Foata normal form. 0/2756 useless extension candidates. Maximal degree in co-relation 5851. Up to 137 conditions per place. [2022-11-16 12:47:41,451 INFO L137 encePairwiseOnDemand]: 250/256 looper letters, 17 selfloop transitions, 4 changer transitions 3/318 dead transitions. [2022-11-16 12:47:41,451 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 318 transitions, 1526 flow [2022-11-16 12:47:41,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:47:41,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:47:41,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 726 transitions. [2022-11-16 12:47:41,453 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9453125 [2022-11-16 12:47:41,454 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 726 transitions. [2022-11-16 12:47:41,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 726 transitions. [2022-11-16 12:47:41,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:47:41,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 726 transitions. [2022-11-16 12:47:41,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 242.0) internal successors, (726), 3 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:41,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:41,458 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:41,458 INFO L175 Difference]: Start difference. First operand has 335 places, 311 transitions, 1461 flow. Second operand 3 states and 726 transitions. [2022-11-16 12:47:41,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 318 transitions, 1526 flow [2022-11-16 12:47:41,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 318 transitions, 1522 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-16 12:47:41,506 INFO L231 Difference]: Finished difference. Result has 335 places, 310 transitions, 1475 flow [2022-11-16 12:47:41,508 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=1457, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1475, PETRI_PLACES=335, PETRI_TRANSITIONS=310} [2022-11-16 12:47:41,509 INFO L288 CegarLoopForPetriNet]: 232 programPoint places, 103 predicate places. [2022-11-16 12:47:41,509 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 310 transitions, 1475 flow [2022-11-16 12:47:41,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 238.33333333333334) internal successors, (715), 3 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:41,510 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:47:41,510 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:47:41,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 12:47:41,511 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:47:41,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:47:41,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1578766824, now seen corresponding path program 3 times [2022-11-16 12:47:41,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:47:41,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415893110] [2022-11-16 12:47:41,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:41,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:47:41,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:41,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:47:41,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:47:41,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415893110] [2022-11-16 12:47:41,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415893110] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:47:41,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:47:41,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:47:41,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822552786] [2022-11-16 12:47:41,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:47:41,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:47:41,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:47:41,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:47:41,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:47:41,747 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 256 [2022-11-16 12:47:41,750 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 310 transitions, 1475 flow. Second operand has 7 states, 7 states have (on average 223.0) internal successors, (1561), 7 states have internal predecessors, (1561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:41,750 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:47:41,750 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 256 [2022-11-16 12:47:41,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:47:42,498 INFO L130 PetriNetUnfolder]: 183/2509 cut-off events. [2022-11-16 12:47:42,499 INFO L131 PetriNetUnfolder]: For 3504/3684 co-relation queries the response was YES. [2022-11-16 12:47:42,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5119 conditions, 2509 events. 183/2509 cut-off events. For 3504/3684 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 25394 event pairs, 35 based on Foata normal form. 10/2379 useless extension candidates. Maximal degree in co-relation 4865. Up to 180 conditions per place. [2022-11-16 12:47:42,527 INFO L137 encePairwiseOnDemand]: 245/256 looper letters, 44 selfloop transitions, 10 changer transitions 11/332 dead transitions. [2022-11-16 12:47:42,527 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 332 transitions, 1696 flow [2022-11-16 12:47:42,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:47:42,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 12:47:42,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1815 transitions. [2022-11-16 12:47:42,533 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.88623046875 [2022-11-16 12:47:42,533 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1815 transitions. [2022-11-16 12:47:42,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1815 transitions. [2022-11-16 12:47:42,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:47:42,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1815 transitions. [2022-11-16 12:47:42,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 226.875) internal successors, (1815), 8 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:42,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 256.0) internal successors, (2304), 9 states have internal predecessors, (2304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:42,544 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 256.0) internal successors, (2304), 9 states have internal predecessors, (2304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:42,544 INFO L175 Difference]: Start difference. First operand has 335 places, 310 transitions, 1475 flow. Second operand 8 states and 1815 transitions. [2022-11-16 12:47:42,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 332 transitions, 1696 flow [2022-11-16 12:47:42,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 332 transitions, 1684 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-16 12:47:42,582 INFO L231 Difference]: Finished difference. Result has 344 places, 308 transitions, 1486 flow [2022-11-16 12:47:42,583 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=1463, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1486, PETRI_PLACES=344, PETRI_TRANSITIONS=308} [2022-11-16 12:47:42,583 INFO L288 CegarLoopForPetriNet]: 232 programPoint places, 112 predicate places. [2022-11-16 12:47:42,584 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 308 transitions, 1486 flow [2022-11-16 12:47:42,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 223.0) internal successors, (1561), 7 states have internal predecessors, (1561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:42,584 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:47:42,585 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] [2022-11-16 12:47:42,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 12:47:42,585 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:47:42,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:47:42,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1453635942, now seen corresponding path program 1 times [2022-11-16 12:47:42,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:47:42,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382109509] [2022-11-16 12:47:42,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:42,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:47:42,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:42,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:47:42,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:47:42,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382109509] [2022-11-16 12:47:42,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382109509] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:47:42,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:47:42,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:47:42,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383416458] [2022-11-16 12:47:42,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:47:42,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:47:42,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:47:42,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:47:42,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:47:42,793 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 256 [2022-11-16 12:47:42,796 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 308 transitions, 1486 flow. Second operand has 7 states, 7 states have (on average 225.85714285714286) internal successors, (1581), 7 states have internal predecessors, (1581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:42,796 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:47:42,796 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 256 [2022-11-16 12:47:42,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:47:43,226 INFO L130 PetriNetUnfolder]: 84/1115 cut-off events. [2022-11-16 12:47:43,226 INFO L131 PetriNetUnfolder]: For 1585/1701 co-relation queries the response was YES. [2022-11-16 12:47:43,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2306 conditions, 1115 events. 84/1115 cut-off events. For 1585/1701 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 9235 event pairs, 14 based on Foata normal form. 8/1062 useless extension candidates. Maximal degree in co-relation 2208. Up to 66 conditions per place. [2022-11-16 12:47:43,249 INFO L137 encePairwiseOnDemand]: 248/256 looper letters, 37 selfloop transitions, 9 changer transitions 4/328 dead transitions. [2022-11-16 12:47:43,249 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 328 transitions, 1658 flow [2022-11-16 12:47:43,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:47:43,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:47:43,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2050 transitions. [2022-11-16 12:47:43,254 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8897569444444444 [2022-11-16 12:47:43,254 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2050 transitions. [2022-11-16 12:47:43,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2050 transitions. [2022-11-16 12:47:43,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:47:43,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2050 transitions. [2022-11-16 12:47:43,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 227.77777777777777) internal successors, (2050), 9 states have internal predecessors, (2050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:43,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 256.0) internal successors, (2560), 10 states have internal predecessors, (2560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:43,266 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 256.0) internal successors, (2560), 10 states have internal predecessors, (2560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:43,266 INFO L175 Difference]: Start difference. First operand has 344 places, 308 transitions, 1486 flow. Second operand 9 states and 2050 transitions. [2022-11-16 12:47:43,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 328 transitions, 1658 flow [2022-11-16 12:47:43,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 328 transitions, 1589 flow, removed 13 selfloop flow, removed 15 redundant places. [2022-11-16 12:47:43,290 INFO L231 Difference]: Finished difference. Result has 340 places, 312 transitions, 1491 flow [2022-11-16 12:47:43,291 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=1427, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1491, PETRI_PLACES=340, PETRI_TRANSITIONS=312} [2022-11-16 12:47:43,292 INFO L288 CegarLoopForPetriNet]: 232 programPoint places, 108 predicate places. [2022-11-16 12:47:43,292 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 312 transitions, 1491 flow [2022-11-16 12:47:43,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 225.85714285714286) internal successors, (1581), 7 states have internal predecessors, (1581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:43,293 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:47:43,293 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] [2022-11-16 12:47:43,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 12:47:43,294 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:47:43,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:47:43,294 INFO L85 PathProgramCache]: Analyzing trace with hash -467109772, now seen corresponding path program 1 times [2022-11-16 12:47:43,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:47:43,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801719516] [2022-11-16 12:47:43,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:43,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:47:43,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:43,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:47:43,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:47:43,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801719516] [2022-11-16 12:47:43,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801719516] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:47:43,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:47:43,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:47:43,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848876193] [2022-11-16 12:47:43,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:47:43,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:47:43,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:47:43,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:47:43,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:47:43,349 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 256 [2022-11-16 12:47:43,350 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 312 transitions, 1491 flow. Second operand has 3 states, 3 states have (on average 237.33333333333334) internal successors, (712), 3 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:43,350 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:47:43,350 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 256 [2022-11-16 12:47:43,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:47:43,689 INFO L130 PetriNetUnfolder]: 72/1098 cut-off events. [2022-11-16 12:47:43,690 INFO L131 PetriNetUnfolder]: For 1592/1700 co-relation queries the response was YES. [2022-11-16 12:47:43,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2202 conditions, 1098 events. 72/1098 cut-off events. For 1592/1700 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 8695 event pairs, 10 based on Foata normal form. 6/1035 useless extension candidates. Maximal degree in co-relation 2140. Up to 43 conditions per place. [2022-11-16 12:47:43,703 INFO L137 encePairwiseOnDemand]: 252/256 looper letters, 14 selfloop transitions, 2 changer transitions 15/311 dead transitions. [2022-11-16 12:47:43,703 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 311 transitions, 1504 flow [2022-11-16 12:47:43,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:47:43,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:47:43,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 724 transitions. [2022-11-16 12:47:43,705 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9427083333333334 [2022-11-16 12:47:43,705 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 724 transitions. [2022-11-16 12:47:43,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 724 transitions. [2022-11-16 12:47:43,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:47:43,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 724 transitions. [2022-11-16 12:47:43,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 241.33333333333334) internal successors, (724), 3 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:43,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:43,708 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:43,709 INFO L175 Difference]: Start difference. First operand has 340 places, 312 transitions, 1491 flow. Second operand 3 states and 724 transitions. [2022-11-16 12:47:43,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 311 transitions, 1504 flow [2022-11-16 12:47:43,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 311 transitions, 1490 flow, removed 3 selfloop flow, removed 6 redundant places. [2022-11-16 12:47:43,728 INFO L231 Difference]: Finished difference. Result has 333 places, 296 transitions, 1362 flow [2022-11-16 12:47:43,729 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=1418, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1362, PETRI_PLACES=333, PETRI_TRANSITIONS=296} [2022-11-16 12:47:43,730 INFO L288 CegarLoopForPetriNet]: 232 programPoint places, 101 predicate places. [2022-11-16 12:47:43,730 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 296 transitions, 1362 flow [2022-11-16 12:47:43,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 237.33333333333334) internal successors, (712), 3 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:43,731 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:47:43,731 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] [2022-11-16 12:47:43,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 12:47:43,731 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:47:43,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:47:43,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1453565342, now seen corresponding path program 1 times [2022-11-16 12:47:43,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:47:43,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242445805] [2022-11-16 12:47:43,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:43,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:47:43,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:44,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:47:44,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:47:44,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242445805] [2022-11-16 12:47:44,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242445805] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:47:44,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:47:44,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:47:44,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800976979] [2022-11-16 12:47:44,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:47:44,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:47:44,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:47:44,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:47:44,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:47:44,088 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 256 [2022-11-16 12:47:44,090 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 296 transitions, 1362 flow. Second operand has 10 states, 10 states have (on average 217.6) internal successors, (2176), 10 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:44,090 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:47:44,090 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 256 [2022-11-16 12:47:44,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:47:44,966 INFO L130 PetriNetUnfolder]: 676/2486 cut-off events. [2022-11-16 12:47:44,966 INFO L131 PetriNetUnfolder]: For 4505/4524 co-relation queries the response was YES. [2022-11-16 12:47:44,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6096 conditions, 2486 events. 676/2486 cut-off events. For 4505/4524 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 23388 event pairs, 324 based on Foata normal form. 2/2366 useless extension candidates. Maximal degree in co-relation 5986. Up to 857 conditions per place. [2022-11-16 12:47:45,002 INFO L137 encePairwiseOnDemand]: 243/256 looper letters, 147 selfloop transitions, 30 changer transitions 28/415 dead transitions. [2022-11-16 12:47:45,002 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 415 transitions, 2355 flow [2022-11-16 12:47:45,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 12:47:45,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-16 12:47:45,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 5300 transitions. [2022-11-16 12:47:45,012 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8626302083333334 [2022-11-16 12:47:45,012 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 5300 transitions. [2022-11-16 12:47:45,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 5300 transitions. [2022-11-16 12:47:45,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:47:45,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 5300 transitions. [2022-11-16 12:47:45,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 220.83333333333334) internal successors, (5300), 24 states have internal predecessors, (5300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:45,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 256.0) internal successors, (6400), 25 states have internal predecessors, (6400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:45,037 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 256.0) internal successors, (6400), 25 states have internal predecessors, (6400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:45,037 INFO L175 Difference]: Start difference. First operand has 333 places, 296 transitions, 1362 flow. Second operand 24 states and 5300 transitions. [2022-11-16 12:47:45,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 415 transitions, 2355 flow [2022-11-16 12:47:45,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 415 transitions, 2328 flow, removed 9 selfloop flow, removed 7 redundant places. [2022-11-16 12:47:45,075 INFO L231 Difference]: Finished difference. Result has 364 places, 325 transitions, 1599 flow [2022-11-16 12:47:45,076 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=1339, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1599, PETRI_PLACES=364, PETRI_TRANSITIONS=325} [2022-11-16 12:47:45,076 INFO L288 CegarLoopForPetriNet]: 232 programPoint places, 132 predicate places. [2022-11-16 12:47:45,077 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 325 transitions, 1599 flow [2022-11-16 12:47:45,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 217.6) internal successors, (2176), 10 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:45,077 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:47:45,078 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] [2022-11-16 12:47:45,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 12:47:45,078 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:47:45,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:47:45,079 INFO L85 PathProgramCache]: Analyzing trace with hash -797744812, now seen corresponding path program 2 times [2022-11-16 12:47:45,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:47:45,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647134000] [2022-11-16 12:47:45,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:45,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:47:45,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:45,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:47:45,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:47:45,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647134000] [2022-11-16 12:47:45,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647134000] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:47:45,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:47:45,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:47:45,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815899585] [2022-11-16 12:47:45,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:47:45,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:47:45,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:47:45,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:47:45,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:47:45,427 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 256 [2022-11-16 12:47:45,430 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 325 transitions, 1599 flow. Second operand has 10 states, 10 states have (on average 217.6) internal successors, (2176), 10 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:45,430 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:47:45,430 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 256 [2022-11-16 12:47:45,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:47:46,620 INFO L130 PetriNetUnfolder]: 1017/3706 cut-off events. [2022-11-16 12:47:46,621 INFO L131 PetriNetUnfolder]: For 11547/11564 co-relation queries the response was YES. [2022-11-16 12:47:46,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11717 conditions, 3706 events. 1017/3706 cut-off events. For 11547/11564 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 37877 event pairs, 509 based on Foata normal form. 2/3554 useless extension candidates. Maximal degree in co-relation 11634. Up to 1184 conditions per place. [2022-11-16 12:47:46,707 INFO L137 encePairwiseOnDemand]: 243/256 looper letters, 180 selfloop transitions, 45 changer transitions 26/461 dead transitions. [2022-11-16 12:47:46,708 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 461 transitions, 2961 flow [2022-11-16 12:47:46,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 12:47:46,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-16 12:47:46,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 5297 transitions. [2022-11-16 12:47:46,718 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8621419270833334 [2022-11-16 12:47:46,718 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 5297 transitions. [2022-11-16 12:47:46,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 5297 transitions. [2022-11-16 12:47:46,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:47:46,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 5297 transitions. [2022-11-16 12:47:46,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 220.70833333333334) internal successors, (5297), 24 states have internal predecessors, (5297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:46,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 256.0) internal successors, (6400), 25 states have internal predecessors, (6400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:46,745 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 256.0) internal successors, (6400), 25 states have internal predecessors, (6400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:46,745 INFO L175 Difference]: Start difference. First operand has 364 places, 325 transitions, 1599 flow. Second operand 24 states and 5297 transitions. [2022-11-16 12:47:46,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 461 transitions, 2961 flow [2022-11-16 12:47:46,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 461 transitions, 2875 flow, removed 43 selfloop flow, removed 2 redundant places. [2022-11-16 12:47:46,891 INFO L231 Difference]: Finished difference. Result has 403 places, 354 transitions, 1995 flow [2022-11-16 12:47:46,892 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=1551, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1995, PETRI_PLACES=403, PETRI_TRANSITIONS=354} [2022-11-16 12:47:46,892 INFO L288 CegarLoopForPetriNet]: 232 programPoint places, 171 predicate places. [2022-11-16 12:47:46,892 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 354 transitions, 1995 flow [2022-11-16 12:47:46,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 217.6) internal successors, (2176), 10 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:46,893 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:47:46,894 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] [2022-11-16 12:47:46,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 12:47:46,894 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:47:46,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:47:46,895 INFO L85 PathProgramCache]: Analyzing trace with hash 307121390, now seen corresponding path program 3 times [2022-11-16 12:47:46,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:47:46,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611653947] [2022-11-16 12:47:46,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:46,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:47:46,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:47,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:47:47,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:47:47,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611653947] [2022-11-16 12:47:47,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611653947] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:47:47,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:47:47,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:47:47,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391683706] [2022-11-16 12:47:47,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:47:47,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:47:47,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:47:47,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:47:47,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:47:47,202 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 256 [2022-11-16 12:47:47,204 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 354 transitions, 1995 flow. Second operand has 10 states, 10 states have (on average 217.6) internal successors, (2176), 10 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:47,205 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:47:47,205 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 256 [2022-11-16 12:47:47,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:47:48,579 INFO L130 PetriNetUnfolder]: 1120/3966 cut-off events. [2022-11-16 12:47:48,579 INFO L131 PetriNetUnfolder]: For 19463/19480 co-relation queries the response was YES. [2022-11-16 12:47:48,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14987 conditions, 3966 events. 1120/3966 cut-off events. For 19463/19480 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 41351 event pairs, 628 based on Foata normal form. 2/3804 useless extension candidates. Maximal degree in co-relation 14885. Up to 1490 conditions per place. [2022-11-16 12:47:48,716 INFO L137 encePairwiseOnDemand]: 243/256 looper letters, 159 selfloop transitions, 56 changer transitions 24/449 dead transitions. [2022-11-16 12:47:48,716 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 449 transitions, 3413 flow [2022-11-16 12:47:48,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-16 12:47:48,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-16 12:47:48,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 4849 transitions. [2022-11-16 12:47:48,726 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8609730113636364 [2022-11-16 12:47:48,727 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 4849 transitions. [2022-11-16 12:47:48,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 4849 transitions. [2022-11-16 12:47:48,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:47:48,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 4849 transitions. [2022-11-16 12:47:48,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 220.4090909090909) internal successors, (4849), 22 states have internal predecessors, (4849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:48,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 256.0) internal successors, (5888), 23 states have internal predecessors, (5888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:48,753 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 256.0) internal successors, (5888), 23 states have internal predecessors, (5888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:48,754 INFO L175 Difference]: Start difference. First operand has 403 places, 354 transitions, 1995 flow. Second operand 22 states and 4849 transitions. [2022-11-16 12:47:48,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 449 transitions, 3413 flow [2022-11-16 12:47:48,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 449 transitions, 3195 flow, removed 109 selfloop flow, removed 2 redundant places. [2022-11-16 12:47:49,007 INFO L231 Difference]: Finished difference. Result has 434 places, 384 transitions, 2454 flow [2022-11-16 12:47:49,008 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=1881, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2454, PETRI_PLACES=434, PETRI_TRANSITIONS=384} [2022-11-16 12:47:49,009 INFO L288 CegarLoopForPetriNet]: 232 programPoint places, 202 predicate places. [2022-11-16 12:47:49,009 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 384 transitions, 2454 flow [2022-11-16 12:47:49,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 217.6) internal successors, (2176), 10 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:49,011 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:47:49,011 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:47:49,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 12:47:49,012 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:47:49,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:47:49,012 INFO L85 PathProgramCache]: Analyzing trace with hash -2044914430, now seen corresponding path program 4 times [2022-11-16 12:47:49,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:47:49,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095902086] [2022-11-16 12:47:49,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:49,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:47:49,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:49,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:47:49,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:47:49,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095902086] [2022-11-16 12:47:49,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095902086] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:47:49,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:47:49,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:47:49,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884633529] [2022-11-16 12:47:49,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:47:49,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:47:49,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:47:49,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:47:49,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:47:49,402 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 256 [2022-11-16 12:47:49,405 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 384 transitions, 2454 flow. Second operand has 10 states, 10 states have (on average 217.6) internal successors, (2176), 10 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:49,405 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:47:49,406 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 256 [2022-11-16 12:47:49,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:47:50,870 INFO L130 PetriNetUnfolder]: 1243/4525 cut-off events. [2022-11-16 12:47:50,870 INFO L131 PetriNetUnfolder]: For 27289/27306 co-relation queries the response was YES. [2022-11-16 12:47:50,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17554 conditions, 4525 events. 1243/4525 cut-off events. For 27289/27306 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 48494 event pairs, 650 based on Foata normal form. 2/4363 useless extension candidates. Maximal degree in co-relation 17439. Up to 1479 conditions per place. [2022-11-16 12:47:50,956 INFO L137 encePairwiseOnDemand]: 243/256 looper letters, 175 selfloop transitions, 61 changer transitions 22/468 dead transitions. [2022-11-16 12:47:50,956 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 468 transitions, 3897 flow [2022-11-16 12:47:50,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-16 12:47:50,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-16 12:47:50,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 4413 transitions. [2022-11-16 12:47:50,971 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8619140625 [2022-11-16 12:47:50,971 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 4413 transitions. [2022-11-16 12:47:50,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 4413 transitions. [2022-11-16 12:47:50,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:47:50,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 4413 transitions. [2022-11-16 12:47:50,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 220.65) internal successors, (4413), 20 states have internal predecessors, (4413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:51,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 256.0) internal successors, (5376), 21 states have internal predecessors, (5376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:51,002 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 256.0) internal successors, (5376), 21 states have internal predecessors, (5376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:51,002 INFO L175 Difference]: Start difference. First operand has 434 places, 384 transitions, 2454 flow. Second operand 20 states and 4413 transitions. [2022-11-16 12:47:51,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 468 transitions, 3897 flow [2022-11-16 12:47:51,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 468 transitions, 3663 flow, removed 117 selfloop flow, removed 2 redundant places. [2022-11-16 12:47:51,462 INFO L231 Difference]: Finished difference. Result has 464 places, 416 transitions, 2972 flow [2022-11-16 12:47:51,462 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=2260, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2972, PETRI_PLACES=464, PETRI_TRANSITIONS=416} [2022-11-16 12:47:51,463 INFO L288 CegarLoopForPetriNet]: 232 programPoint places, 232 predicate places. [2022-11-16 12:47:51,463 INFO L495 AbstractCegarLoop]: Abstraction has has 464 places, 416 transitions, 2972 flow [2022-11-16 12:47:51,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 217.6) internal successors, (2176), 10 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:51,463 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:47:51,463 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] [2022-11-16 12:47:51,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 12:47:51,464 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:47:51,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:47:51,464 INFO L85 PathProgramCache]: Analyzing trace with hash 2103424878, now seen corresponding path program 5 times [2022-11-16 12:47:51,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:47:51,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403342817] [2022-11-16 12:47:51,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:51,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:47:51,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:51,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:47:51,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:47:51,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403342817] [2022-11-16 12:47:51,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403342817] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:47:51,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:47:51,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:47:51,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864036830] [2022-11-16 12:47:51,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:47:51,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:47:51,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:47:51,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:47:51,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:47:51,814 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 256 [2022-11-16 12:47:51,816 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 416 transitions, 2972 flow. Second operand has 10 states, 10 states have (on average 217.6) internal successors, (2176), 10 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:51,816 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:47:51,816 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 256 [2022-11-16 12:47:51,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:47:53,404 INFO L130 PetriNetUnfolder]: 1281/4685 cut-off events. [2022-11-16 12:47:53,405 INFO L131 PetriNetUnfolder]: For 36791/36808 co-relation queries the response was YES. [2022-11-16 12:47:53,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19589 conditions, 4685 events. 1281/4685 cut-off events. For 36791/36808 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 51254 event pairs, 656 based on Foata normal form. 2/4516 useless extension candidates. Maximal degree in co-relation 19460. Up to 1665 conditions per place. [2022-11-16 12:47:53,486 INFO L137 encePairwiseOnDemand]: 243/256 looper letters, 194 selfloop transitions, 78 changer transitions 19/501 dead transitions. [2022-11-16 12:47:53,487 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 481 places, 501 transitions, 4567 flow [2022-11-16 12:47:53,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-16 12:47:53,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-16 12:47:53,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 4409 transitions. [2022-11-16 12:47:53,500 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8611328125 [2022-11-16 12:47:53,500 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 4409 transitions. [2022-11-16 12:47:53,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 4409 transitions. [2022-11-16 12:47:53,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:47:53,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 4409 transitions. [2022-11-16 12:47:53,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 220.45) internal successors, (4409), 20 states have internal predecessors, (4409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:53,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 256.0) internal successors, (5376), 21 states have internal predecessors, (5376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:53,524 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 256.0) internal successors, (5376), 21 states have internal predecessors, (5376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:53,524 INFO L175 Difference]: Start difference. First operand has 464 places, 416 transitions, 2972 flow. Second operand 20 states and 4409 transitions. [2022-11-16 12:47:53,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 481 places, 501 transitions, 4567 flow [2022-11-16 12:47:53,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 501 transitions, 4199 flow, removed 184 selfloop flow, removed 2 redundant places. [2022-11-16 12:47:53,937 INFO L231 Difference]: Finished difference. Result has 494 places, 447 transitions, 3511 flow [2022-11-16 12:47:53,938 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=2734, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=3511, PETRI_PLACES=494, PETRI_TRANSITIONS=447} [2022-11-16 12:47:53,939 INFO L288 CegarLoopForPetriNet]: 232 programPoint places, 262 predicate places. [2022-11-16 12:47:53,939 INFO L495 AbstractCegarLoop]: Abstraction has has 494 places, 447 transitions, 3511 flow [2022-11-16 12:47:53,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 217.6) internal successors, (2176), 10 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:53,940 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:47:53,940 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] [2022-11-16 12:47:53,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-16 12:47:53,941 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:47:53,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:47:53,941 INFO L85 PathProgramCache]: Analyzing trace with hash 876170242, now seen corresponding path program 6 times [2022-11-16 12:47:53,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:47:53,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804009740] [2022-11-16 12:47:53,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:53,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:47:53,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:54,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:47:54,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:47:54,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804009740] [2022-11-16 12:47:54,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804009740] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:47:54,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:47:54,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:47:54,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106891374] [2022-11-16 12:47:54,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:47:54,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:47:54,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:47:54,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:47:54,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:47:54,314 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 256 [2022-11-16 12:47:54,316 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 494 places, 447 transitions, 3511 flow. Second operand has 10 states, 10 states have (on average 217.6) internal successors, (2176), 10 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:54,317 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:47:54,317 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 256 [2022-11-16 12:47:54,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:47:56,082 INFO L130 PetriNetUnfolder]: 1311/4936 cut-off events. [2022-11-16 12:47:56,082 INFO L131 PetriNetUnfolder]: For 42336/42399 co-relation queries the response was YES. [2022-11-16 12:47:56,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20739 conditions, 4936 events. 1311/4936 cut-off events. For 42336/42399 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 54883 event pairs, 688 based on Foata normal form. 10/4764 useless extension candidates. Maximal degree in co-relation 20596. Up to 1681 conditions per place. [2022-11-16 12:47:56,190 INFO L137 encePairwiseOnDemand]: 243/256 looper letters, 198 selfloop transitions, 96 changer transitions 17/521 dead transitions. [2022-11-16 12:47:56,190 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 509 places, 521 transitions, 5090 flow [2022-11-16 12:47:56,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 12:47:56,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 12:47:56,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3973 transitions. [2022-11-16 12:47:56,196 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8621961805555556 [2022-11-16 12:47:56,196 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3973 transitions. [2022-11-16 12:47:56,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3973 transitions. [2022-11-16 12:47:56,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:47:56,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3973 transitions. [2022-11-16 12:47:56,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 220.72222222222223) internal successors, (3973), 18 states have internal predecessors, (3973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:56,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 256.0) internal successors, (4864), 19 states have internal predecessors, (4864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:56,210 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 256.0) internal successors, (4864), 19 states have internal predecessors, (4864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:56,211 INFO L175 Difference]: Start difference. First operand has 494 places, 447 transitions, 3511 flow. Second operand 18 states and 3973 transitions. [2022-11-16 12:47:56,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 509 places, 521 transitions, 5090 flow [2022-11-16 12:47:56,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 521 transitions, 4662 flow, removed 214 selfloop flow, removed 2 redundant places. [2022-11-16 12:47:56,663 INFO L231 Difference]: Finished difference. Result has 515 places, 468 transitions, 3880 flow [2022-11-16 12:47:56,664 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=3297, PETRI_DIFFERENCE_MINUEND_PLACES=490, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=3880, PETRI_PLACES=515, PETRI_TRANSITIONS=468} [2022-11-16 12:47:56,665 INFO L288 CegarLoopForPetriNet]: 232 programPoint places, 283 predicate places. [2022-11-16 12:47:56,666 INFO L495 AbstractCegarLoop]: Abstraction has has 515 places, 468 transitions, 3880 flow [2022-11-16 12:47:56,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 217.6) internal successors, (2176), 10 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:56,666 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:47:56,667 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:47:56,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-16 12:47:56,667 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:47:56,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:47:56,668 INFO L85 PathProgramCache]: Analyzing trace with hash -518875914, now seen corresponding path program 7 times [2022-11-16 12:47:56,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:47:56,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541479858] [2022-11-16 12:47:56,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:56,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:47:56,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:57,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:47:57,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:47:57,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541479858] [2022-11-16 12:47:57,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541479858] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:47:57,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:47:57,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:47:57,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607313154] [2022-11-16 12:47:57,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:47:57,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:47:57,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:47:57,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:47:57,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:47:57,150 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 256 [2022-11-16 12:47:57,152 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 515 places, 468 transitions, 3880 flow. Second operand has 10 states, 10 states have (on average 217.6) internal successors, (2176), 10 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:57,152 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:47:57,152 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 256 [2022-11-16 12:47:57,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:47:58,808 INFO L130 PetriNetUnfolder]: 1361/5034 cut-off events. [2022-11-16 12:47:58,808 INFO L131 PetriNetUnfolder]: For 32237/32254 co-relation queries the response was YES. [2022-11-16 12:47:58,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21147 conditions, 5034 events. 1361/5034 cut-off events. For 32237/32254 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 55936 event pairs, 669 based on Foata normal form. 2/4860 useless extension candidates. Maximal degree in co-relation 20997. Up to 1730 conditions per place. [2022-11-16 12:47:58,906 INFO L137 encePairwiseOnDemand]: 243/256 looper letters, 206 selfloop transitions, 100 changer transitions 16/532 dead transitions. [2022-11-16 12:47:58,906 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 532 transitions, 5253 flow [2022-11-16 12:47:58,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 12:47:58,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-16 12:47:58,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3756 transitions. [2022-11-16 12:47:58,912 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8630514705882353 [2022-11-16 12:47:58,913 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3756 transitions. [2022-11-16 12:47:58,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3756 transitions. [2022-11-16 12:47:58,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:47:58,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3756 transitions. [2022-11-16 12:47:58,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 220.94117647058823) internal successors, (3756), 17 states have internal predecessors, (3756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:58,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 256.0) internal successors, (4608), 18 states have internal predecessors, (4608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:58,925 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 256.0) internal successors, (4608), 18 states have internal predecessors, (4608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:58,925 INFO L175 Difference]: Start difference. First operand has 515 places, 468 transitions, 3880 flow. Second operand 17 states and 3756 transitions. [2022-11-16 12:47:58,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 532 transitions, 5253 flow [2022-11-16 12:47:59,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 527 places, 532 transitions, 5105 flow, removed 74 selfloop flow, removed 2 redundant places. [2022-11-16 12:47:59,279 INFO L231 Difference]: Finished difference. Result has 536 places, 489 transitions, 4399 flow [2022-11-16 12:47:59,279 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=3766, PETRI_DIFFERENCE_MINUEND_PLACES=511, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=4399, PETRI_PLACES=536, PETRI_TRANSITIONS=489} [2022-11-16 12:47:59,280 INFO L288 CegarLoopForPetriNet]: 232 programPoint places, 304 predicate places. [2022-11-16 12:47:59,280 INFO L495 AbstractCegarLoop]: Abstraction has has 536 places, 489 transitions, 4399 flow [2022-11-16 12:47:59,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 217.6) internal successors, (2176), 10 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:59,281 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:47:59,281 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:47:59,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-16 12:47:59,281 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:47:59,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:47:59,281 INFO L85 PathProgramCache]: Analyzing trace with hash 2087596584, now seen corresponding path program 8 times [2022-11-16 12:47:59,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:47:59,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663185646] [2022-11-16 12:47:59,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:59,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:47:59,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:59,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:47:59,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:47:59,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663185646] [2022-11-16 12:47:59,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663185646] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:47:59,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:47:59,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:47:59,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139386959] [2022-11-16 12:47:59,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:47:59,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:47:59,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:47:59,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:47:59,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:47:59,714 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 256 [2022-11-16 12:47:59,716 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 536 places, 489 transitions, 4399 flow. Second operand has 10 states, 10 states have (on average 217.6) internal successors, (2176), 10 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:59,717 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:47:59,717 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 256 [2022-11-16 12:47:59,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:48:01,951 INFO L130 PetriNetUnfolder]: 1368/5322 cut-off events. [2022-11-16 12:48:01,952 INFO L131 PetriNetUnfolder]: For 37793/37844 co-relation queries the response was YES. [2022-11-16 12:48:02,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22260 conditions, 5322 events. 1368/5322 cut-off events. For 37793/37844 co-relation queries the response was YES. Maximal size of possible extension queue 533. Compared 60735 event pairs, 687 based on Foata normal form. 10/5155 useless extension candidates. Maximal degree in co-relation 22102. Up to 1764 conditions per place. [2022-11-16 12:48:02,117 INFO L137 encePairwiseOnDemand]: 243/256 looper letters, 209 selfloop transitions, 107 changer transitions 19/545 dead transitions. [2022-11-16 12:48:02,117 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 549 places, 545 transitions, 5617 flow [2022-11-16 12:48:02,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 12:48:02,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-16 12:48:02,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3536 transitions. [2022-11-16 12:48:02,124 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.86328125 [2022-11-16 12:48:02,124 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3536 transitions. [2022-11-16 12:48:02,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3536 transitions. [2022-11-16 12:48:02,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:48:02,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3536 transitions. [2022-11-16 12:48:02,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 221.0) internal successors, (3536), 16 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:02,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 256.0) internal successors, (4352), 17 states have internal predecessors, (4352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:02,139 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 256.0) internal successors, (4352), 17 states have internal predecessors, (4352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:02,139 INFO L175 Difference]: Start difference. First operand has 536 places, 489 transitions, 4399 flow. Second operand 16 states and 3536 transitions. [2022-11-16 12:48:02,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 549 places, 545 transitions, 5617 flow [2022-11-16 12:48:02,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 547 places, 545 transitions, 5491 flow, removed 63 selfloop flow, removed 2 redundant places. [2022-11-16 12:48:02,626 INFO L231 Difference]: Finished difference. Result has 554 places, 497 transitions, 4681 flow [2022-11-16 12:48:02,627 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=4277, PETRI_DIFFERENCE_MINUEND_PLACES=532, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=489, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4681, PETRI_PLACES=554, PETRI_TRANSITIONS=497} [2022-11-16 12:48:02,628 INFO L288 CegarLoopForPetriNet]: 232 programPoint places, 322 predicate places. [2022-11-16 12:48:02,628 INFO L495 AbstractCegarLoop]: Abstraction has has 554 places, 497 transitions, 4681 flow [2022-11-16 12:48:02,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 217.6) internal successors, (2176), 10 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:02,629 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:48:02,629 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:48:02,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-16 12:48:02,629 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:48:02,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:48:02,630 INFO L85 PathProgramCache]: Analyzing trace with hash -720029630, now seen corresponding path program 9 times [2022-11-16 12:48:02,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:48:02,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108148192] [2022-11-16 12:48:02,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:48:02,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:48:02,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:03,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:48:03,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:48:03,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108148192] [2022-11-16 12:48:03,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108148192] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:48:03,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:48:03,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:48:03,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920713297] [2022-11-16 12:48:03,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:48:03,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:48:03,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:48:03,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:48:03,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:48:03,061 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 256 [2022-11-16 12:48:03,063 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 554 places, 497 transitions, 4681 flow. Second operand has 10 states, 10 states have (on average 217.6) internal successors, (2176), 10 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:03,063 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:48:03,063 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 256 [2022-11-16 12:48:03,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:48:05,658 INFO L130 PetriNetUnfolder]: 1403/5541 cut-off events. [2022-11-16 12:48:05,661 INFO L131 PetriNetUnfolder]: For 41981/42032 co-relation queries the response was YES. [2022-11-16 12:48:05,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23750 conditions, 5541 events. 1403/5541 cut-off events. For 41981/42032 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 63621 event pairs, 753 based on Foata normal form. 2/5355 useless extension candidates. Maximal degree in co-relation 23586. Up to 1702 conditions per place. [2022-11-16 12:48:05,807 INFO L137 encePairwiseOnDemand]: 243/256 looper letters, 240 selfloop transitions, 98 changer transitions 23/571 dead transitions. [2022-11-16 12:48:05,807 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 572 places, 571 transitions, 6321 flow [2022-11-16 12:48:05,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 12:48:05,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 12:48:05,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4632 transitions. [2022-11-16 12:48:05,814 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8616071428571429 [2022-11-16 12:48:05,815 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4632 transitions. [2022-11-16 12:48:05,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4632 transitions. [2022-11-16 12:48:05,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:48:05,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4632 transitions. [2022-11-16 12:48:05,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 220.57142857142858) internal successors, (4632), 21 states have internal predecessors, (4632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:05,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 256.0) internal successors, (5632), 22 states have internal predecessors, (5632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:05,834 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 256.0) internal successors, (5632), 22 states have internal predecessors, (5632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:05,834 INFO L175 Difference]: Start difference. First operand has 554 places, 497 transitions, 4681 flow. Second operand 21 states and 4632 transitions. [2022-11-16 12:48:05,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 572 places, 571 transitions, 6321 flow [2022-11-16 12:48:06,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 569 places, 571 transitions, 6208 flow, removed 34 selfloop flow, removed 3 redundant places. [2022-11-16 12:48:06,214 INFO L231 Difference]: Finished difference. Result has 583 places, 521 transitions, 5402 flow [2022-11-16 12:48:06,215 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=4600, PETRI_DIFFERENCE_MINUEND_PLACES=549, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=5402, PETRI_PLACES=583, PETRI_TRANSITIONS=521} [2022-11-16 12:48:06,215 INFO L288 CegarLoopForPetriNet]: 232 programPoint places, 351 predicate places. [2022-11-16 12:48:06,215 INFO L495 AbstractCegarLoop]: Abstraction has has 583 places, 521 transitions, 5402 flow [2022-11-16 12:48:06,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 217.6) internal successors, (2176), 10 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:06,216 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:48:06,216 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:48:06,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-16 12:48:06,217 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:48:06,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:48:06,217 INFO L85 PathProgramCache]: Analyzing trace with hash 132138936, now seen corresponding path program 10 times [2022-11-16 12:48:06,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:48:06,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419850791] [2022-11-16 12:48:06,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:48:06,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:48:06,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:06,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:48:06,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:48:06,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419850791] [2022-11-16 12:48:06,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419850791] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:48:06,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:48:06,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:48:06,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904493350] [2022-11-16 12:48:06,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:48:06,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:48:06,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:48:06,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:48:06,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:48:06,579 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 256 [2022-11-16 12:48:06,581 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 583 places, 521 transitions, 5402 flow. Second operand has 10 states, 10 states have (on average 217.6) internal successors, (2176), 10 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:06,581 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:48:06,581 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 256 [2022-11-16 12:48:06,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:48:08,734 INFO L130 PetriNetUnfolder]: 1413/5468 cut-off events. [2022-11-16 12:48:08,734 INFO L131 PetriNetUnfolder]: For 44252/44269 co-relation queries the response was YES. [2022-11-16 12:48:08,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24980 conditions, 5468 events. 1413/5468 cut-off events. For 44252/44269 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 62950 event pairs, 686 based on Foata normal form. 2/5292 useless extension candidates. Maximal degree in co-relation 24804. Up to 1830 conditions per place. [2022-11-16 12:48:08,827 INFO L137 encePairwiseOnDemand]: 243/256 looper letters, 222 selfloop transitions, 120 changer transitions 20/572 dead transitions. [2022-11-16 12:48:08,827 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 598 places, 572 transitions, 6709 flow [2022-11-16 12:48:08,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 12:48:08,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 12:48:08,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3972 transitions. [2022-11-16 12:48:08,830 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8619791666666666 [2022-11-16 12:48:08,830 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3972 transitions. [2022-11-16 12:48:08,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3972 transitions. [2022-11-16 12:48:08,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:48:08,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3972 transitions. [2022-11-16 12:48:08,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 220.66666666666666) internal successors, (3972), 18 states have internal predecessors, (3972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:08,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 256.0) internal successors, (4864), 19 states have internal predecessors, (4864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:08,841 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 256.0) internal successors, (4864), 19 states have internal predecessors, (4864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:08,841 INFO L175 Difference]: Start difference. First operand has 583 places, 521 transitions, 5402 flow. Second operand 18 states and 3972 transitions. [2022-11-16 12:48:08,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 598 places, 572 transitions, 6709 flow [2022-11-16 12:48:09,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 596 places, 572 transitions, 6471 flow, removed 119 selfloop flow, removed 2 redundant places. [2022-11-16 12:48:09,338 INFO L231 Difference]: Finished difference. Result has 604 places, 535 transitions, 5778 flow [2022-11-16 12:48:09,339 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=5210, PETRI_DIFFERENCE_MINUEND_PLACES=579, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=5778, PETRI_PLACES=604, PETRI_TRANSITIONS=535} [2022-11-16 12:48:09,339 INFO L288 CegarLoopForPetriNet]: 232 programPoint places, 372 predicate places. [2022-11-16 12:48:09,339 INFO L495 AbstractCegarLoop]: Abstraction has has 604 places, 535 transitions, 5778 flow [2022-11-16 12:48:09,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 217.6) internal successors, (2176), 10 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:09,340 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:48:09,340 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] [2022-11-16 12:48:09,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-16 12:48:09,340 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:48:09,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:48:09,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1696554158, now seen corresponding path program 11 times [2022-11-16 12:48:09,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:48:09,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622820907] [2022-11-16 12:48:09,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:48:09,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:48:09,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:09,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:48:09,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:48:09,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622820907] [2022-11-16 12:48:09,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622820907] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:48:09,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:48:09,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:48:09,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816284116] [2022-11-16 12:48:09,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:48:09,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:48:09,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:48:09,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:48:09,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:48:09,649 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 256 [2022-11-16 12:48:09,651 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 604 places, 535 transitions, 5778 flow. Second operand has 10 states, 10 states have (on average 217.6) internal successors, (2176), 10 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:09,651 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:48:09,651 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 256 [2022-11-16 12:48:09,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:48:11,613 INFO L130 PetriNetUnfolder]: 1443/5772 cut-off events. [2022-11-16 12:48:11,613 INFO L131 PetriNetUnfolder]: For 50123/50201 co-relation queries the response was YES. [2022-11-16 12:48:11,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26055 conditions, 5772 events. 1443/5772 cut-off events. For 50123/50201 co-relation queries the response was YES. Maximal size of possible extension queue 587. Compared 67189 event pairs, 771 based on Foata normal form. 2/5580 useless extension candidates. Maximal degree in co-relation 25872. Up to 1863 conditions per place. [2022-11-16 12:48:11,741 INFO L137 encePairwiseOnDemand]: 243/256 looper letters, 252 selfloop transitions, 113 changer transitions 15/590 dead transitions. [2022-11-16 12:48:11,741 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 618 places, 590 transitions, 7235 flow [2022-11-16 12:48:11,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 12:48:11,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-16 12:48:11,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3756 transitions. [2022-11-16 12:48:11,745 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8630514705882353 [2022-11-16 12:48:11,746 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3756 transitions. [2022-11-16 12:48:11,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3756 transitions. [2022-11-16 12:48:11,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:48:11,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3756 transitions. [2022-11-16 12:48:11,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 220.94117647058823) internal successors, (3756), 17 states have internal predecessors, (3756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:11,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 256.0) internal successors, (4608), 18 states have internal predecessors, (4608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:11,756 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 256.0) internal successors, (4608), 18 states have internal predecessors, (4608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:11,757 INFO L175 Difference]: Start difference. First operand has 604 places, 535 transitions, 5778 flow. Second operand 17 states and 3756 transitions. [2022-11-16 12:48:11,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 618 places, 590 transitions, 7235 flow [2022-11-16 12:48:12,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 614 places, 590 transitions, 7068 flow, removed 34 selfloop flow, removed 4 redundant places. [2022-11-16 12:48:12,353 INFO L231 Difference]: Finished difference. Result has 622 places, 553 transitions, 6317 flow [2022-11-16 12:48:12,353 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=5623, PETRI_DIFFERENCE_MINUEND_PLACES=598, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=535, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=435, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=6317, PETRI_PLACES=622, PETRI_TRANSITIONS=553} [2022-11-16 12:48:12,354 INFO L288 CegarLoopForPetriNet]: 232 programPoint places, 390 predicate places. [2022-11-16 12:48:12,354 INFO L495 AbstractCegarLoop]: Abstraction has has 622 places, 553 transitions, 6317 flow [2022-11-16 12:48:12,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 217.6) internal successors, (2176), 10 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:12,354 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:48:12,355 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] [2022-11-16 12:48:12,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-16 12:48:12,355 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:48:12,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:48:12,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1904783822, now seen corresponding path program 12 times [2022-11-16 12:48:12,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:48:12,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948753695] [2022-11-16 12:48:12,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:48:12,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:48:12,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:12,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:48:12,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:48:12,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948753695] [2022-11-16 12:48:12,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948753695] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:48:12,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:48:12,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:48:12,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561027217] [2022-11-16 12:48:12,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:48:12,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:48:12,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:48:12,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:48:12,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:48:12,663 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 256 [2022-11-16 12:48:12,665 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 622 places, 553 transitions, 6317 flow. Second operand has 10 states, 10 states have (on average 217.6) internal successors, (2176), 10 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:12,665 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:48:12,665 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 256 [2022-11-16 12:48:12,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:48:14,981 INFO L130 PetriNetUnfolder]: 1433/5625 cut-off events. [2022-11-16 12:48:14,982 INFO L131 PetriNetUnfolder]: For 46975/46992 co-relation queries the response was YES. [2022-11-16 12:48:15,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26246 conditions, 5625 events. 1433/5625 cut-off events. For 46975/46992 co-relation queries the response was YES. Maximal size of possible extension queue 575. Compared 65202 event pairs, 684 based on Foata normal form. 2/5445 useless extension candidates. Maximal degree in co-relation 26057. Up to 1853 conditions per place. [2022-11-16 12:48:15,118 INFO L137 encePairwiseOnDemand]: 243/256 looper letters, 250 selfloop transitions, 116 changer transitions 24/600 dead transitions. [2022-11-16 12:48:15,119 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 637 places, 600 transitions, 7580 flow [2022-11-16 12:48:15,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 12:48:15,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 12:48:15,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3976 transitions. [2022-11-16 12:48:15,125 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8628472222222222 [2022-11-16 12:48:15,125 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3976 transitions. [2022-11-16 12:48:15,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3976 transitions. [2022-11-16 12:48:15,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:48:15,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3976 transitions. [2022-11-16 12:48:15,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 220.88888888888889) internal successors, (3976), 18 states have internal predecessors, (3976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:15,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 256.0) internal successors, (4864), 19 states have internal predecessors, (4864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:15,141 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 256.0) internal successors, (4864), 19 states have internal predecessors, (4864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:15,141 INFO L175 Difference]: Start difference. First operand has 622 places, 553 transitions, 6317 flow. Second operand 18 states and 3976 transitions. [2022-11-16 12:48:15,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 637 places, 600 transitions, 7580 flow [2022-11-16 12:48:15,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 634 places, 600 transitions, 7364 flow, removed 83 selfloop flow, removed 3 redundant places. [2022-11-16 12:48:15,754 INFO L231 Difference]: Finished difference. Result has 641 places, 562 transitions, 6613 flow [2022-11-16 12:48:15,755 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=6133, PETRI_DIFFERENCE_MINUEND_PLACES=617, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=553, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=6613, PETRI_PLACES=641, PETRI_TRANSITIONS=562} [2022-11-16 12:48:15,755 INFO L288 CegarLoopForPetriNet]: 232 programPoint places, 409 predicate places. [2022-11-16 12:48:15,755 INFO L495 AbstractCegarLoop]: Abstraction has has 641 places, 562 transitions, 6613 flow [2022-11-16 12:48:15,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 217.6) internal successors, (2176), 10 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:15,756 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:48:15,756 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:48:15,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-16 12:48:15,756 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:48:15,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:48:15,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1479144078, now seen corresponding path program 13 times [2022-11-16 12:48:15,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:48:15,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461653578] [2022-11-16 12:48:15,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:48:15,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:48:15,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:16,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:48:16,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:48:16,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461653578] [2022-11-16 12:48:16,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461653578] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:48:16,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:48:16,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:48:16,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168463378] [2022-11-16 12:48:16,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:48:16,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:48:16,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:48:16,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:48:16,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:48:16,127 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 256 [2022-11-16 12:48:16,129 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 641 places, 562 transitions, 6613 flow. Second operand has 10 states, 10 states have (on average 217.6) internal successors, (2176), 10 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:16,130 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:48:16,130 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 256 [2022-11-16 12:48:16,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:48:18,973 INFO L130 PetriNetUnfolder]: 1531/6143 cut-off events. [2022-11-16 12:48:18,974 INFO L131 PetriNetUnfolder]: For 58058/58075 co-relation queries the response was YES. [2022-11-16 12:48:19,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28720 conditions, 6143 events. 1531/6143 cut-off events. For 58058/58075 co-relation queries the response was YES. Maximal size of possible extension queue 638. Compared 72710 event pairs, 624 based on Foata normal form. 2/5983 useless extension candidates. Maximal degree in co-relation 28526. Up to 1760 conditions per place. [2022-11-16 12:48:19,175 INFO L137 encePairwiseOnDemand]: 243/256 looper letters, 277 selfloop transitions, 143 changer transitions 23/653 dead transitions. [2022-11-16 12:48:19,175 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 660 places, 653 transitions, 8586 flow [2022-11-16 12:48:19,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-16 12:48:19,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-16 12:48:19,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 4847 transitions. [2022-11-16 12:48:19,179 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8606178977272727 [2022-11-16 12:48:19,179 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 4847 transitions. [2022-11-16 12:48:19,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 4847 transitions. [2022-11-16 12:48:19,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:48:19,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 4847 transitions. [2022-11-16 12:48:19,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 220.3181818181818) internal successors, (4847), 22 states have internal predecessors, (4847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:19,191 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 256.0) internal successors, (5888), 23 states have internal predecessors, (5888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:19,192 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 256.0) internal successors, (5888), 23 states have internal predecessors, (5888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:19,193 INFO L175 Difference]: Start difference. First operand has 641 places, 562 transitions, 6613 flow. Second operand 22 states and 4847 transitions. [2022-11-16 12:48:19,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 660 places, 653 transitions, 8586 flow [2022-11-16 12:48:20,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 657 places, 653 transitions, 8408 flow, removed 58 selfloop flow, removed 3 redundant places. [2022-11-16 12:48:20,154 INFO L231 Difference]: Finished difference. Result has 671 places, 594 transitions, 7493 flow [2022-11-16 12:48:20,154 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=6450, PETRI_DIFFERENCE_MINUEND_PLACES=636, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=562, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=7493, PETRI_PLACES=671, PETRI_TRANSITIONS=594} [2022-11-16 12:48:20,155 INFO L288 CegarLoopForPetriNet]: 232 programPoint places, 439 predicate places. [2022-11-16 12:48:20,155 INFO L495 AbstractCegarLoop]: Abstraction has has 671 places, 594 transitions, 7493 flow [2022-11-16 12:48:20,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 217.6) internal successors, (2176), 10 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:20,155 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:48:20,156 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] [2022-11-16 12:48:20,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-16 12:48:20,156 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:48:20,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:48:20,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1731184962, now seen corresponding path program 14 times [2022-11-16 12:48:20,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:48:20,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20226750] [2022-11-16 12:48:20,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:48:20,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:48:20,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:20,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:48:20,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:48:20,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20226750] [2022-11-16 12:48:20,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20226750] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:48:20,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:48:20,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:48:20,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417531789] [2022-11-16 12:48:20,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:48:20,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:48:20,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:48:20,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:48:20,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:48:20,452 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 256 [2022-11-16 12:48:20,454 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 671 places, 594 transitions, 7493 flow. Second operand has 10 states, 10 states have (on average 217.6) internal successors, (2176), 10 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:20,454 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:48:20,454 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 256 [2022-11-16 12:48:20,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:48:23,376 INFO L130 PetriNetUnfolder]: 1565/6372 cut-off events. [2022-11-16 12:48:23,376 INFO L131 PetriNetUnfolder]: For 65784/65801 co-relation queries the response was YES. [2022-11-16 12:48:23,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30924 conditions, 6372 events. 1565/6372 cut-off events. For 65784/65801 co-relation queries the response was YES. Maximal size of possible extension queue 670. Compared 76401 event pairs, 636 based on Foata normal form. 2/6203 useless extension candidates. Maximal degree in co-relation 30717. Up to 1785 conditions per place. [2022-11-16 12:48:23,546 INFO L137 encePairwiseOnDemand]: 243/256 looper letters, 328 selfloop transitions, 105 changer transitions 21/664 dead transitions. [2022-11-16 12:48:23,546 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 689 places, 664 transitions, 9333 flow [2022-11-16 12:48:23,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 12:48:23,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 12:48:23,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4629 transitions. [2022-11-16 12:48:23,551 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8610491071428571 [2022-11-16 12:48:23,551 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4629 transitions. [2022-11-16 12:48:23,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4629 transitions. [2022-11-16 12:48:23,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:48:23,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4629 transitions. [2022-11-16 12:48:23,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 220.42857142857142) internal successors, (4629), 21 states have internal predecessors, (4629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:23,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 256.0) internal successors, (5632), 22 states have internal predecessors, (5632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:23,564 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 256.0) internal successors, (5632), 22 states have internal predecessors, (5632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:23,564 INFO L175 Difference]: Start difference. First operand has 671 places, 594 transitions, 7493 flow. Second operand 21 states and 4629 transitions. [2022-11-16 12:48:23,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 689 places, 664 transitions, 9333 flow [2022-11-16 12:48:24,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 687 places, 664 transitions, 9147 flow, removed 93 selfloop flow, removed 2 redundant places. [2022-11-16 12:48:24,455 INFO L231 Difference]: Finished difference. Result has 701 places, 618 transitions, 8173 flow [2022-11-16 12:48:24,455 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=7321, PETRI_DIFFERENCE_MINUEND_PLACES=667, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=594, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=504, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=8173, PETRI_PLACES=701, PETRI_TRANSITIONS=618} [2022-11-16 12:48:24,456 INFO L288 CegarLoopForPetriNet]: 232 programPoint places, 469 predicate places. [2022-11-16 12:48:24,456 INFO L495 AbstractCegarLoop]: Abstraction has has 701 places, 618 transitions, 8173 flow [2022-11-16 12:48:24,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 217.6) internal successors, (2176), 10 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:24,457 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:48:24,457 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:48:24,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-16 12:48:24,457 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:48:24,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:48:24,458 INFO L85 PathProgramCache]: Analyzing trace with hash 736156986, now seen corresponding path program 15 times [2022-11-16 12:48:24,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:48:24,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883383394] [2022-11-16 12:48:24,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:48:24,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:48:24,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:24,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:48:24,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:48:24,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883383394] [2022-11-16 12:48:24,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883383394] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:48:24,796 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:48:24,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:48:24,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113444353] [2022-11-16 12:48:24,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:48:24,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:48:24,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:48:24,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:48:24,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:48:24,800 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 256 [2022-11-16 12:48:24,802 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 701 places, 618 transitions, 8173 flow. Second operand has 10 states, 10 states have (on average 217.6) internal successors, (2176), 10 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:24,802 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:48:24,803 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 256 [2022-11-16 12:48:24,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:48:27,846 INFO L130 PetriNetUnfolder]: 1588/6562 cut-off events. [2022-11-16 12:48:27,846 INFO L131 PetriNetUnfolder]: For 70874/70891 co-relation queries the response was YES. [2022-11-16 12:48:27,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32343 conditions, 6562 events. 1588/6562 cut-off events. For 70874/70891 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 79840 event pairs, 626 based on Foata normal form. 2/6400 useless extension candidates. Maximal degree in co-relation 32123. Up to 1856 conditions per place. [2022-11-16 12:48:27,990 INFO L137 encePairwiseOnDemand]: 243/256 looper letters, 298 selfloop transitions, 161 changer transitions 18/687 dead transitions. [2022-11-16 12:48:27,990 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 716 places, 687 transitions, 9951 flow [2022-11-16 12:48:27,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 12:48:27,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 12:48:27,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3973 transitions. [2022-11-16 12:48:27,995 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8621961805555556 [2022-11-16 12:48:27,995 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3973 transitions. [2022-11-16 12:48:27,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3973 transitions. [2022-11-16 12:48:27,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:48:27,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3973 transitions. [2022-11-16 12:48:28,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 220.72222222222223) internal successors, (3973), 18 states have internal predecessors, (3973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:28,004 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 256.0) internal successors, (4864), 19 states have internal predecessors, (4864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:28,005 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 256.0) internal successors, (4864), 19 states have internal predecessors, (4864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:28,005 INFO L175 Difference]: Start difference. First operand has 701 places, 618 transitions, 8173 flow. Second operand 18 states and 3973 transitions. [2022-11-16 12:48:28,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 716 places, 687 transitions, 9951 flow [2022-11-16 12:48:28,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 714 places, 687 transitions, 9761 flow, removed 95 selfloop flow, removed 2 redundant places. [2022-11-16 12:48:28,923 INFO L231 Difference]: Finished difference. Result has 722 places, 639 transitions, 8827 flow [2022-11-16 12:48:28,924 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=7985, PETRI_DIFFERENCE_MINUEND_PLACES=697, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=618, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=8827, PETRI_PLACES=722, PETRI_TRANSITIONS=639} [2022-11-16 12:48:28,924 INFO L288 CegarLoopForPetriNet]: 232 programPoint places, 490 predicate places. [2022-11-16 12:48:28,924 INFO L495 AbstractCegarLoop]: Abstraction has has 722 places, 639 transitions, 8827 flow [2022-11-16 12:48:28,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 217.6) internal successors, (2176), 10 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:28,925 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:48:28,925 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] [2022-11-16 12:48:28,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-16 12:48:28,925 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:48:28,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:48:28,926 INFO L85 PathProgramCache]: Analyzing trace with hash -184410972, now seen corresponding path program 16 times [2022-11-16 12:48:28,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:48:28,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178269345] [2022-11-16 12:48:28,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:48:28,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:48:28,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:29,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:48:29,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:48:29,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178269345] [2022-11-16 12:48:29,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178269345] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:48:29,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:48:29,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:48:29,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001065124] [2022-11-16 12:48:29,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:48:29,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:48:29,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:48:29,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:48:29,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:48:29,208 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 256 [2022-11-16 12:48:29,210 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 722 places, 639 transitions, 8827 flow. Second operand has 10 states, 10 states have (on average 217.6) internal successors, (2176), 10 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:29,210 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:48:29,210 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 256 [2022-11-16 12:48:29,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:48:32,547 INFO L130 PetriNetUnfolder]: 1643/6738 cut-off events. [2022-11-16 12:48:32,547 INFO L131 PetriNetUnfolder]: For 75319/75336 co-relation queries the response was YES. [2022-11-16 12:48:32,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34377 conditions, 6738 events. 1643/6738 cut-off events. For 75319/75336 co-relation queries the response was YES. Maximal size of possible extension queue 718. Compared 82082 event pairs, 642 based on Foata normal form. 2/6567 useless extension candidates. Maximal degree in co-relation 34150. Up to 1899 conditions per place. [2022-11-16 12:48:32,689 INFO L137 encePairwiseOnDemand]: 243/256 looper letters, 338 selfloop transitions, 134 changer transitions 16/698 dead transitions. [2022-11-16 12:48:32,689 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 736 places, 698 transitions, 10594 flow [2022-11-16 12:48:32,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 12:48:32,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-16 12:48:32,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3755 transitions. [2022-11-16 12:48:32,693 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8628216911764706 [2022-11-16 12:48:32,693 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3755 transitions. [2022-11-16 12:48:32,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3755 transitions. [2022-11-16 12:48:32,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:48:32,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3755 transitions. [2022-11-16 12:48:32,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 220.88235294117646) internal successors, (3755), 17 states have internal predecessors, (3755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:32,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 256.0) internal successors, (4608), 18 states have internal predecessors, (4608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:32,703 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 256.0) internal successors, (4608), 18 states have internal predecessors, (4608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:32,703 INFO L175 Difference]: Start difference. First operand has 722 places, 639 transitions, 8827 flow. Second operand 17 states and 3755 transitions. [2022-11-16 12:48:32,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 736 places, 698 transitions, 10594 flow [2022-11-16 12:48:33,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 734 places, 698 transitions, 10374 flow, removed 110 selfloop flow, removed 2 redundant places. [2022-11-16 12:48:33,790 INFO L231 Difference]: Finished difference. Result has 743 places, 660 transitions, 9457 flow [2022-11-16 12:48:33,791 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=8651, PETRI_DIFFERENCE_MINUEND_PLACES=718, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=639, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=520, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=9457, PETRI_PLACES=743, PETRI_TRANSITIONS=660} [2022-11-16 12:48:33,792 INFO L288 CegarLoopForPetriNet]: 232 programPoint places, 511 predicate places. [2022-11-16 12:48:33,793 INFO L495 AbstractCegarLoop]: Abstraction has has 743 places, 660 transitions, 9457 flow [2022-11-16 12:48:33,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 217.6) internal successors, (2176), 10 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:33,793 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:48:33,793 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] [2022-11-16 12:48:33,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-16 12:48:33,794 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:48:33,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:48:33,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1682367062, now seen corresponding path program 17 times [2022-11-16 12:48:33,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:48:33,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8205256] [2022-11-16 12:48:33,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:48:33,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:48:33,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:34,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:48:34,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:48:34,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8205256] [2022-11-16 12:48:34,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8205256] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:48:34,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:48:34,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:48:34,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503279670] [2022-11-16 12:48:34,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:48:34,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:48:34,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:48:34,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:48:34,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:48:34,069 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 256 [2022-11-16 12:48:34,070 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 743 places, 660 transitions, 9457 flow. Second operand has 10 states, 10 states have (on average 217.6) internal successors, (2176), 10 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:34,070 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:48:34,071 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 256 [2022-11-16 12:48:34,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:48:37,606 INFO L130 PetriNetUnfolder]: 1666/6873 cut-off events. [2022-11-16 12:48:37,606 INFO L131 PetriNetUnfolder]: For 79776/79793 co-relation queries the response was YES. [2022-11-16 12:48:37,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35770 conditions, 6873 events. 1666/6873 cut-off events. For 79776/79793 co-relation queries the response was YES. Maximal size of possible extension queue 736. Compared 84068 event pairs, 639 based on Foata normal form. 2/6701 useless extension candidates. Maximal degree in co-relation 35535. Up to 1934 conditions per place. [2022-11-16 12:48:37,804 INFO L137 encePairwiseOnDemand]: 243/256 looper letters, 363 selfloop transitions, 126 changer transitions 17/716 dead transitions. [2022-11-16 12:48:37,804 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 758 places, 716 transitions, 11233 flow [2022-11-16 12:48:37,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 12:48:37,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 12:48:37,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3975 transitions. [2022-11-16 12:48:37,808 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8626302083333334 [2022-11-16 12:48:37,808 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3975 transitions. [2022-11-16 12:48:37,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3975 transitions. [2022-11-16 12:48:37,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:48:37,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3975 transitions. [2022-11-16 12:48:37,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 220.83333333333334) internal successors, (3975), 18 states have internal predecessors, (3975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:37,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 256.0) internal successors, (4864), 19 states have internal predecessors, (4864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:37,815 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 256.0) internal successors, (4864), 19 states have internal predecessors, (4864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:37,815 INFO L175 Difference]: Start difference. First operand has 743 places, 660 transitions, 9457 flow. Second operand 18 states and 3975 transitions. [2022-11-16 12:48:37,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 758 places, 716 transitions, 11233 flow [2022-11-16 12:48:38,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 756 places, 716 transitions, 11099 flow, removed 67 selfloop flow, removed 2 redundant places. [2022-11-16 12:48:38,961 INFO L231 Difference]: Finished difference. Result has 764 places, 679 transitions, 10118 flow [2022-11-16 12:48:38,962 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=9327, PETRI_DIFFERENCE_MINUEND_PLACES=739, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=660, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=547, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=10118, PETRI_PLACES=764, PETRI_TRANSITIONS=679} [2022-11-16 12:48:38,962 INFO L288 CegarLoopForPetriNet]: 232 programPoint places, 532 predicate places. [2022-11-16 12:48:38,963 INFO L495 AbstractCegarLoop]: Abstraction has has 764 places, 679 transitions, 10118 flow [2022-11-16 12:48:38,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 217.6) internal successors, (2176), 10 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:38,963 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:48:38,963 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:48:38,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-16 12:48:38,963 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:48:38,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:48:38,964 INFO L85 PathProgramCache]: Analyzing trace with hash 981837422, now seen corresponding path program 18 times [2022-11-16 12:48:38,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:48:38,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077631350] [2022-11-16 12:48:38,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:48:38,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:48:38,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:39,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:48:39,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:48:39,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077631350] [2022-11-16 12:48:39,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077631350] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:48:39,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:48:39,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:48:39,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234962891] [2022-11-16 12:48:39,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:48:39,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:48:39,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:48:39,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:48:39,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:48:39,237 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 256 [2022-11-16 12:48:39,239 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 764 places, 679 transitions, 10118 flow. Second operand has 10 states, 10 states have (on average 217.6) internal successors, (2176), 10 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:39,239 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:48:39,240 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 256 [2022-11-16 12:48:39,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:48:42,979 INFO L130 PetriNetUnfolder]: 1685/7014 cut-off events. [2022-11-16 12:48:42,979 INFO L131 PetriNetUnfolder]: For 86622/86639 co-relation queries the response was YES. [2022-11-16 12:48:43,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37129 conditions, 7014 events. 1685/7014 cut-off events. For 86622/86639 co-relation queries the response was YES. Maximal size of possible extension queue 759. Compared 86881 event pairs, 636 based on Foata normal form. 2/6843 useless extension candidates. Maximal degree in co-relation 36887. Up to 1969 conditions per place. [2022-11-16 12:48:43,145 INFO L137 encePairwiseOnDemand]: 243/256 looper letters, 363 selfloop transitions, 133 changer transitions 22/728 dead transitions. [2022-11-16 12:48:43,145 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 778 places, 728 transitions, 11739 flow [2022-11-16 12:48:43,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 12:48:43,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-16 12:48:43,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3759 transitions. [2022-11-16 12:48:43,151 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8637408088235294 [2022-11-16 12:48:43,151 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3759 transitions. [2022-11-16 12:48:43,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3759 transitions. [2022-11-16 12:48:43,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:48:43,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3759 transitions. [2022-11-16 12:48:43,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 221.11764705882354) internal successors, (3759), 17 states have internal predecessors, (3759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:43,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 256.0) internal successors, (4608), 18 states have internal predecessors, (4608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:43,161 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 256.0) internal successors, (4608), 18 states have internal predecessors, (4608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:43,161 INFO L175 Difference]: Start difference. First operand has 764 places, 679 transitions, 10118 flow. Second operand 17 states and 3759 transitions. [2022-11-16 12:48:43,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 778 places, 728 transitions, 11739 flow [2022-11-16 12:48:44,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 776 places, 728 transitions, 11553 flow, removed 93 selfloop flow, removed 2 redundant places. [2022-11-16 12:48:44,254 INFO L231 Difference]: Finished difference. Result has 783 places, 692 transitions, 10597 flow [2022-11-16 12:48:44,256 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=9948, PETRI_DIFFERENCE_MINUEND_PLACES=760, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=679, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=554, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=10597, PETRI_PLACES=783, PETRI_TRANSITIONS=692} [2022-11-16 12:48:44,256 INFO L288 CegarLoopForPetriNet]: 232 programPoint places, 551 predicate places. [2022-11-16 12:48:44,256 INFO L495 AbstractCegarLoop]: Abstraction has has 783 places, 692 transitions, 10597 flow [2022-11-16 12:48:44,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 217.6) internal successors, (2176), 10 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:44,257 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:48:44,257 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] [2022-11-16 12:48:44,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-16 12:48:44,257 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:48:44,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:48:44,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1843708722, now seen corresponding path program 19 times [2022-11-16 12:48:44,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:48:44,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774382920] [2022-11-16 12:48:44,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:48:44,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:48:44,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:44,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:48:44,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:48:44,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774382920] [2022-11-16 12:48:44,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774382920] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:48:44,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:48:44,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:48:44,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551055344] [2022-11-16 12:48:44,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:48:44,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:48:44,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:48:44,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:48:44,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:48:44,549 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 256 [2022-11-16 12:48:44,551 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 783 places, 692 transitions, 10597 flow. Second operand has 10 states, 10 states have (on average 217.6) internal successors, (2176), 10 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:44,551 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:48:44,551 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 256 [2022-11-16 12:48:44,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand