./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-bakery-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b8157a-a824-4865-ae06-f8a426cf25c7/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b8157a-a824-4865-ae06-f8a426cf25c7/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b8157a-a824-4865-ae06-f8a426cf25c7/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b8157a-a824-4865-ae06-f8a426cf25c7/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-bakery-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b8157a-a824-4865-ae06-f8a426cf25c7/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b8157a-a824-4865-ae06-f8a426cf25c7/bin/uautomizer-UnR33cPsHg --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 792abe541332f7dc398bc25a6deb152789a85df6c33026f5ef70dc244a881f99 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:05:21,516 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:05:21,518 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:05:21,569 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:05:21,570 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:05:21,575 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:05:21,579 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:05:21,584 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:05:21,588 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:05:21,596 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:05:21,597 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:05:21,599 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:05:21,600 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:05:21,603 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:05:21,607 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:05:21,609 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:05:21,611 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:05:21,613 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:05:21,619 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:05:21,630 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:05:21,632 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:05:21,634 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:05:21,637 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:05:21,639 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:05:21,643 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:05:21,644 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:05:21,644 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:05:21,646 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:05:21,647 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:05:21,649 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:05:21,649 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:05:21,650 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:05:21,653 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:05:21,654 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:05:21,656 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:05:21,656 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:05:21,657 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:05:21,658 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:05:21,658 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:05:21,659 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:05:21,660 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:05:21,661 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b8157a-a824-4865-ae06-f8a426cf25c7/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 09:05:21,714 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:05:21,714 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:05:21,715 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:05:21,715 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:05:21,723 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:05:21,723 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:05:21,724 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:05:21,724 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:05:21,724 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:05:21,724 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:05:21,725 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:05:21,726 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:05:21,726 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 09:05:21,726 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:05:21,727 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 09:05:21,727 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:05:21,727 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:05:21,727 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:05:21,727 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 09:05:21,728 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:05:21,728 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:05:21,728 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:05:21,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:05:21,729 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:05:21,729 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:05:21,729 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 09:05:21,730 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:05:21,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:05:21,730 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 09:05:21,730 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 09:05:21,730 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 09:05:21,731 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:05:21,731 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_21b8157a-a824-4865-ae06-f8a426cf25c7/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b8157a-a824-4865-ae06-f8a426cf25c7/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 792abe541332f7dc398bc25a6deb152789a85df6c33026f5ef70dc244a881f99 [2021-10-28 09:05:22,089 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:05:22,128 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:05:22,133 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:05:22,134 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:05:22,135 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:05:22,136 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b8157a-a824-4865-ae06-f8a426cf25c7/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/weaver/parallel-bakery-2.wvr.c [2021-10-28 09:05:22,214 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b8157a-a824-4865-ae06-f8a426cf25c7/bin/uautomizer-UnR33cPsHg/data/85b2bf81d/114f3fb3e27947e5b379df1b33b4f61e/FLAG02585e4f4 [2021-10-28 09:05:22,862 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:05:22,868 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b8157a-a824-4865-ae06-f8a426cf25c7/sv-benchmarks/c/weaver/parallel-bakery-2.wvr.c [2021-10-28 09:05:22,886 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b8157a-a824-4865-ae06-f8a426cf25c7/bin/uautomizer-UnR33cPsHg/data/85b2bf81d/114f3fb3e27947e5b379df1b33b4f61e/FLAG02585e4f4 [2021-10-28 09:05:23,220 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b8157a-a824-4865-ae06-f8a426cf25c7/bin/uautomizer-UnR33cPsHg/data/85b2bf81d/114f3fb3e27947e5b379df1b33b4f61e [2021-10-28 09:05:23,225 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:05:23,230 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:05:23,232 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:05:23,233 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:05:23,237 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:05:23,238 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:05:23" (1/1) ... [2021-10-28 09:05:23,240 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@772a287 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:05:23, skipping insertion in model container [2021-10-28 09:05:23,240 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:05:23" (1/1) ... [2021-10-28 09:05:23,249 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:05:23,292 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:05:23,535 WARN L228 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_21b8157a-a824-4865-ae06-f8a426cf25c7/sv-benchmarks/c/weaver/parallel-bakery-2.wvr.c[3512,3525] [2021-10-28 09:05:23,543 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:05:23,553 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:05:23,580 WARN L228 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_21b8157a-a824-4865-ae06-f8a426cf25c7/sv-benchmarks/c/weaver/parallel-bakery-2.wvr.c[3512,3525] [2021-10-28 09:05:23,581 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:05:23,597 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:05:23,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:05:23 WrapperNode [2021-10-28 09:05:23,597 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:05:23,599 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:05:23,599 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:05:23,599 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:05:23,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:05:23" (1/1) ... [2021-10-28 09:05:23,614 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:05:23" (1/1) ... [2021-10-28 09:05:23,640 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:05:23,641 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:05:23,642 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:05:23,642 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:05:23,651 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:05:23" (1/1) ... [2021-10-28 09:05:23,651 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:05:23" (1/1) ... [2021-10-28 09:05:23,654 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:05:23" (1/1) ... [2021-10-28 09:05:23,655 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:05:23" (1/1) ... [2021-10-28 09:05:23,661 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:05:23" (1/1) ... [2021-10-28 09:05:23,664 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:05:23" (1/1) ... [2021-10-28 09:05:23,666 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:05:23" (1/1) ... [2021-10-28 09:05:23,669 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:05:23,671 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:05:23,671 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:05:23,671 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:05:23,672 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:05:23" (1/1) ... [2021-10-28 09:05:23,682 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:05:23,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b8157a-a824-4865-ae06-f8a426cf25c7/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:05:23,726 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b8157a-a824-4865-ae06-f8a426cf25c7/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:05:23,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b8157a-a824-4865-ae06-f8a426cf25c7/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:05:23,785 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-28 09:05:23,786 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-28 09:05:23,786 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-28 09:05:23,786 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-28 09:05:23,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:05:23,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:05:23,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 09:05:23,787 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-28 09:05:23,787 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-28 09:05:23,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:05:23,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:05:23,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 09:05:23,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 09:05:23,789 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-28 09:05:24,506 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:05:24,506 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-10-28 09:05:24,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:05:24 BoogieIcfgContainer [2021-10-28 09:05:24,509 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:05:24,511 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:05:24,511 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:05:24,518 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:05:24,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:05:23" (1/3) ... [2021-10-28 09:05:24,519 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1744d91b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:05:24, skipping insertion in model container [2021-10-28 09:05:24,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:05:23" (2/3) ... [2021-10-28 09:05:24,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1744d91b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:05:24, skipping insertion in model container [2021-10-28 09:05:24,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:05:24" (3/3) ... [2021-10-28 09:05:24,521 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-bakery-2.wvr.c [2021-10-28 09:05:24,527 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-28 09:05:24,528 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:05:24,529 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 09:05:24,529 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-28 09:05:24,574 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:05:24,575 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:05:24,575 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:05:24,575 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:05:24,576 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:05:24,576 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:05:24,576 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:05:24,576 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:05:24,577 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:05:24,577 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:05:24,577 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:05:24,578 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:05:24,578 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:05:24,578 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:05:24,579 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:05:24,579 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:05:24,580 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:05:24,581 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:05:24,581 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:05:24,581 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:05:24,582 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:05:24,582 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:05:24,583 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:05:24,583 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:05:24,583 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:05:24,584 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:05:24,585 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:05:24,585 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:05:24,586 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:05:24,587 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:05:24,587 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:05:24,587 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:05:24,593 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:05:24,594 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:05:24,594 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:05:24,594 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:05:24,594 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:05:24,595 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:05:24,596 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:05:24,597 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:05:24,597 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:05:24,597 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:05:24,598 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:05:24,598 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:05:24,609 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-28 09:05:24,683 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:05:24,699 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 09:05:24,699 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-28 09:05:24,743 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 105 places, 100 transitions, 216 flow [2021-10-28 09:05:24,849 INFO L129 PetriNetUnfolder]: 2/98 cut-off events. [2021-10-28 09:05:24,849 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-28 09:05:24,854 INFO L84 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 98 events. 2/98 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 65. Up to 2 conditions per place. [2021-10-28 09:05:24,854 INFO L82 GeneralOperation]: Start removeDead. Operand has 105 places, 100 transitions, 216 flow [2021-10-28 09:05:24,861 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 95 places, 90 transitions, 192 flow [2021-10-28 09:05:24,913 INFO L129 PetriNetUnfolder]: 2/89 cut-off events. [2021-10-28 09:05:24,913 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-28 09:05:24,913 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:05:24,914 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:05:24,915 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:05:24,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:05:24,924 INFO L85 PathProgramCache]: Analyzing trace with hash 10941041, now seen corresponding path program 1 times [2021-10-28 09:05:24,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:05:24,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101674427] [2021-10-28 09:05:24,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:05:24,938 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:05:25,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:05:25,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:05:25,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:05:25,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101674427] [2021-10-28 09:05:25,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101674427] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:05:25,802 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:05:25,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-28 09:05:25,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664201797] [2021-10-28 09:05:25,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 09:05:25,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:05:25,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 09:05:25,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:05:25,839 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 100 [2021-10-28 09:05:25,849 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 90 transitions, 192 flow. Second operand has 11 states, 11 states have (on average 78.63636363636364) internal successors, (865), 11 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:05:25,849 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:05:25,849 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 100 [2021-10-28 09:05:25,850 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:05:26,269 INFO L129 PetriNetUnfolder]: 1/147 cut-off events. [2021-10-28 09:05:26,271 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2021-10-28 09:05:26,273 INFO L84 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 147 events. 1/147 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 310 event pairs, 0 based on Foata normal form. 5/147 useless extension candidates. Maximal degree in co-relation 83. Up to 9 conditions per place. [2021-10-28 09:05:26,277 INFO L132 encePairwiseOnDemand]: 82/100 looper letters, 19 selfloop transitions, 13 changer transitions 10/110 dead transitions. [2021-10-28 09:05:26,278 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 110 transitions, 316 flow [2021-10-28 09:05:26,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-28 09:05:26,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-10-28 09:05:26,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1280 transitions. [2021-10-28 09:05:26,310 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8 [2021-10-28 09:05:26,311 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1280 transitions. [2021-10-28 09:05:26,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1280 transitions. [2021-10-28 09:05:26,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:05:26,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1280 transitions. [2021-10-28 09:05:26,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 80.0) internal successors, (1280), 16 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:05:26,343 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 100.0) internal successors, (1700), 17 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:05:26,345 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 100.0) internal successors, (1700), 17 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:05:26,348 INFO L186 Difference]: Start difference. First operand has 95 places, 90 transitions, 192 flow. Second operand 16 states and 1280 transitions. [2021-10-28 09:05:26,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 110 transitions, 316 flow [2021-10-28 09:05:26,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 110 transitions, 308 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-10-28 09:05:26,362 INFO L242 Difference]: Finished difference. Result has 111 places, 91 transitions, 232 flow [2021-10-28 09:05:26,364 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=232, PETRI_PLACES=111, PETRI_TRANSITIONS=91} [2021-10-28 09:05:26,366 INFO L334 CegarLoopForPetriNet]: 95 programPoint places, 16 predicate places. [2021-10-28 09:05:26,366 INFO L470 AbstractCegarLoop]: Abstraction has has 111 places, 91 transitions, 232 flow [2021-10-28 09:05:26,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 78.63636363636364) internal successors, (865), 11 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:05:26,368 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:05:26,368 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:05:26,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 09:05:26,368 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:05:26,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:05:26,369 INFO L85 PathProgramCache]: Analyzing trace with hash -620860303, now seen corresponding path program 2 times [2021-10-28 09:05:26,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:05:26,370 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029321635] [2021-10-28 09:05:26,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:05:26,370 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:05:26,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:05:26,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:05:26,665 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:05:26,665 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029321635] [2021-10-28 09:05:26,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029321635] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:05:26,666 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:05:26,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 09:05:26,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373347911] [2021-10-28 09:05:26,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:05:26,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:05:26,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:05:26,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:05:26,671 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 100 [2021-10-28 09:05:26,672 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 91 transitions, 232 flow. Second operand has 8 states, 8 states have (on average 77.5) internal successors, (620), 8 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:05:26,672 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:05:26,672 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 100 [2021-10-28 09:05:26,673 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:05:26,889 INFO L129 PetriNetUnfolder]: 28/252 cut-off events. [2021-10-28 09:05:26,890 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2021-10-28 09:05:26,892 INFO L84 FinitePrefix]: Finished finitePrefix Result has 411 conditions, 252 events. 28/252 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 967 event pairs, 5 based on Foata normal form. 2/247 useless extension candidates. Maximal degree in co-relation 391. Up to 63 conditions per place. [2021-10-28 09:05:26,895 INFO L132 encePairwiseOnDemand]: 92/100 looper letters, 25 selfloop transitions, 12 changer transitions 0/108 dead transitions. [2021-10-28 09:05:26,895 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 108 transitions, 340 flow [2021-10-28 09:05:26,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:05:26,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-28 09:05:26,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 638 transitions. [2021-10-28 09:05:26,898 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7975 [2021-10-28 09:05:26,898 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 638 transitions. [2021-10-28 09:05:26,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 638 transitions. [2021-10-28 09:05:26,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:05:26,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 638 transitions. [2021-10-28 09:05:26,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 79.75) internal successors, (638), 8 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:05:26,905 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 100.0) internal successors, (900), 9 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:05:26,907 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 100.0) internal successors, (900), 9 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:05:26,907 INFO L186 Difference]: Start difference. First operand has 111 places, 91 transitions, 232 flow. Second operand 8 states and 638 transitions. [2021-10-28 09:05:26,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 108 transitions, 340 flow [2021-10-28 09:05:26,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 108 transitions, 330 flow, removed 3 selfloop flow, removed 5 redundant places. [2021-10-28 09:05:26,915 INFO L242 Difference]: Finished difference. Result has 106 places, 100 transitions, 285 flow [2021-10-28 09:05:26,916 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=285, PETRI_PLACES=106, PETRI_TRANSITIONS=100} [2021-10-28 09:05:26,916 INFO L334 CegarLoopForPetriNet]: 95 programPoint places, 11 predicate places. [2021-10-28 09:05:26,917 INFO L470 AbstractCegarLoop]: Abstraction has has 106 places, 100 transitions, 285 flow [2021-10-28 09:05:26,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 77.5) internal successors, (620), 8 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:05:26,918 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:05:26,919 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:05:26,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 09:05:26,919 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:05:26,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:05:26,922 INFO L85 PathProgramCache]: Analyzing trace with hash -815326793, now seen corresponding path program 3 times [2021-10-28 09:05:26,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:05:26,922 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657322418] [2021-10-28 09:05:26,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:05:26,923 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:05:27,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:05:27,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:05:27,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:05:27,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657322418] [2021-10-28 09:05:27,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657322418] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:05:27,263 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:05:27,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-28 09:05:27,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830735127] [2021-10-28 09:05:27,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 09:05:27,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:05:27,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 09:05:27,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:05:27,272 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 100 [2021-10-28 09:05:27,273 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 100 transitions, 285 flow. Second operand has 11 states, 11 states have (on average 78.63636363636364) internal successors, (865), 11 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:05:27,273 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:05:27,273 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 100 [2021-10-28 09:05:27,274 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:05:27,538 INFO L129 PetriNetUnfolder]: 9/191 cut-off events. [2021-10-28 09:05:27,539 INFO L130 PetriNetUnfolder]: For 25/26 co-relation queries the response was YES. [2021-10-28 09:05:27,540 INFO L84 FinitePrefix]: Finished finitePrefix Result has 331 conditions, 191 events. 9/191 cut-off events. For 25/26 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 611 event pairs, 1 based on Foata normal form. 2/192 useless extension candidates. Maximal degree in co-relation 205. Up to 13 conditions per place. [2021-10-28 09:05:27,542 INFO L132 encePairwiseOnDemand]: 86/100 looper letters, 13 selfloop transitions, 12 changer transitions 13/109 dead transitions. [2021-10-28 09:05:27,542 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 109 transitions, 373 flow [2021-10-28 09:05:27,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:05:27,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-10-28 09:05:27,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 956 transitions. [2021-10-28 09:05:27,548 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7966666666666666 [2021-10-28 09:05:27,548 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 956 transitions. [2021-10-28 09:05:27,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 956 transitions. [2021-10-28 09:05:27,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:05:27,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 956 transitions. [2021-10-28 09:05:27,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 79.66666666666667) internal successors, (956), 12 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:05:27,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 100.0) internal successors, (1300), 13 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:05:27,559 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 100.0) internal successors, (1300), 13 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:05:27,559 INFO L186 Difference]: Start difference. First operand has 106 places, 100 transitions, 285 flow. Second operand 12 states and 956 transitions. [2021-10-28 09:05:27,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 109 transitions, 373 flow [2021-10-28 09:05:27,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 109 transitions, 369 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-28 09:05:27,574 INFO L242 Difference]: Finished difference. Result has 118 places, 91 transitions, 270 flow [2021-10-28 09:05:27,575 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=270, PETRI_PLACES=118, PETRI_TRANSITIONS=91} [2021-10-28 09:05:27,575 INFO L334 CegarLoopForPetriNet]: 95 programPoint places, 23 predicate places. [2021-10-28 09:05:27,576 INFO L470 AbstractCegarLoop]: Abstraction has has 118 places, 91 transitions, 270 flow [2021-10-28 09:05:27,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 78.63636363636364) internal successors, (865), 11 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:05:27,577 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:05:27,577 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:05:27,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 09:05:27,578 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:05:27,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:05:27,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1103273835, now seen corresponding path program 4 times [2021-10-28 09:05:27,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:05:27,581 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601794326] [2021-10-28 09:05:27,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:05:27,589 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:05:27,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:05:27,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:05:27,683 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:05:27,683 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601794326] [2021-10-28 09:05:27,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601794326] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:05:27,684 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:05:27,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:05:27,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732266440] [2021-10-28 09:05:27,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:05:27,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:05:27,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:05:27,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:05:27,687 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 100 [2021-10-28 09:05:27,687 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 91 transitions, 270 flow. Second operand has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:05:27,687 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:05:27,687 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 100 [2021-10-28 09:05:27,688 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:05:27,714 INFO L129 PetriNetUnfolder]: 3/139 cut-off events. [2021-10-28 09:05:27,715 INFO L130 PetriNetUnfolder]: For 22/23 co-relation queries the response was YES. [2021-10-28 09:05:27,716 INFO L84 FinitePrefix]: Finished finitePrefix Result has 235 conditions, 139 events. 3/139 cut-off events. For 22/23 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 226 event pairs, 1 based on Foata normal form. 2/141 useless extension candidates. Maximal degree in co-relation 216. Up to 11 conditions per place. [2021-10-28 09:05:27,716 INFO L132 encePairwiseOnDemand]: 97/100 looper letters, 4 selfloop transitions, 2 changer transitions 0/91 dead transitions. [2021-10-28 09:05:27,717 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 91 transitions, 282 flow [2021-10-28 09:05:27,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:05:27,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-28 09:05:27,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 280 transitions. [2021-10-28 09:05:27,718 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9333333333333333 [2021-10-28 09:05:27,719 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 280 transitions. [2021-10-28 09:05:27,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 280 transitions. [2021-10-28 09:05:27,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:05:27,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 280 transitions. [2021-10-28 09:05:27,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:05:27,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:05:27,722 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:05:27,722 INFO L186 Difference]: Start difference. First operand has 118 places, 91 transitions, 270 flow. Second operand 3 states and 280 transitions. [2021-10-28 09:05:27,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 91 transitions, 282 flow [2021-10-28 09:05:27,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 91 transitions, 237 flow, removed 5 selfloop flow, removed 14 redundant places. [2021-10-28 09:05:27,728 INFO L242 Difference]: Finished difference. Result has 101 places, 91 transitions, 233 flow [2021-10-28 09:05:27,728 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=233, PETRI_PLACES=101, PETRI_TRANSITIONS=91} [2021-10-28 09:05:27,729 INFO L334 CegarLoopForPetriNet]: 95 programPoint places, 6 predicate places. [2021-10-28 09:05:27,738 INFO L470 AbstractCegarLoop]: Abstraction has has 101 places, 91 transitions, 233 flow [2021-10-28 09:05:27,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:05:27,738 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:05:27,739 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:05:27,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 09:05:27,739 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:05:27,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:05:27,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1689894389, now seen corresponding path program 5 times [2021-10-28 09:05:27,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:05:27,741 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002830386] [2021-10-28 09:05:27,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:05:27,741 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:05:27,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:05:27,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:05:27,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:05:27,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002830386] [2021-10-28 09:05:27,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002830386] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:05:27,805 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:05:27,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:05:27,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092747318] [2021-10-28 09:05:27,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:05:27,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:05:27,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:05:27,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:05:27,808 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 100 [2021-10-28 09:05:27,809 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 91 transitions, 233 flow. Second operand has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:05:27,809 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:05:27,810 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 100 [2021-10-28 09:05:27,810 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:05:27,843 INFO L129 PetriNetUnfolder]: 3/140 cut-off events. [2021-10-28 09:05:27,844 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2021-10-28 09:05:27,844 INFO L84 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 140 events. 3/140 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 246 event pairs, 1 based on Foata normal form. 3/142 useless extension candidates. Maximal degree in co-relation 118. Up to 10 conditions per place. [2021-10-28 09:05:27,845 INFO L132 encePairwiseOnDemand]: 97/100 looper letters, 4 selfloop transitions, 2 changer transitions 0/91 dead transitions. [2021-10-28 09:05:27,846 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 91 transitions, 245 flow [2021-10-28 09:05:27,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:05:27,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-28 09:05:27,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 280 transitions. [2021-10-28 09:05:27,849 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9333333333333333 [2021-10-28 09:05:27,850 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 280 transitions. [2021-10-28 09:05:27,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 280 transitions. [2021-10-28 09:05:27,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:05:27,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 280 transitions. [2021-10-28 09:05:27,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:05:27,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:05:27,854 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:05:27,854 INFO L186 Difference]: Start difference. First operand has 101 places, 91 transitions, 233 flow. Second operand 3 states and 280 transitions. [2021-10-28 09:05:27,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 91 transitions, 245 flow [2021-10-28 09:05:27,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 91 transitions, 241 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-28 09:05:27,860 INFO L242 Difference]: Finished difference. Result has 102 places, 91 transitions, 237 flow [2021-10-28 09:05:27,860 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=237, PETRI_PLACES=102, PETRI_TRANSITIONS=91} [2021-10-28 09:05:27,861 INFO L334 CegarLoopForPetriNet]: 95 programPoint places, 7 predicate places. [2021-10-28 09:05:27,861 INFO L470 AbstractCegarLoop]: Abstraction has has 102 places, 91 transitions, 237 flow [2021-10-28 09:05:27,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:05:27,862 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:05:27,862 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:05:27,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 09:05:27,863 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:05:27,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:05:27,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1392308053, now seen corresponding path program 6 times [2021-10-28 09:05:27,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:05:27,864 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365746170] [2021-10-28 09:05:27,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:05:27,865 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:05:27,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:05:28,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:05:28,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:05:28,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365746170] [2021-10-28 09:05:28,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365746170] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:05:28,124 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:05:28,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 09:05:28,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870522341] [2021-10-28 09:05:28,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:05:28,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:05:28,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:05:28,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:05:28,127 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 100 [2021-10-28 09:05:28,128 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 91 transitions, 237 flow. Second operand has 7 states, 7 states have (on average 77.85714285714286) internal successors, (545), 7 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:05:28,128 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:05:28,128 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 100 [2021-10-28 09:05:28,128 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:05:28,278 INFO L129 PetriNetUnfolder]: 8/150 cut-off events. [2021-10-28 09:05:28,279 INFO L130 PetriNetUnfolder]: For 15/16 co-relation queries the response was YES. [2021-10-28 09:05:28,279 INFO L84 FinitePrefix]: Finished finitePrefix Result has 260 conditions, 150 events. 8/150 cut-off events. For 15/16 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 277 event pairs, 6 based on Foata normal form. 3/150 useless extension candidates. Maximal degree in co-relation 154. Up to 36 conditions per place. [2021-10-28 09:05:28,280 INFO L132 encePairwiseOnDemand]: 94/100 looper letters, 17 selfloop transitions, 4 changer transitions 4/93 dead transitions. [2021-10-28 09:05:28,280 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 93 transitions, 288 flow [2021-10-28 09:05:28,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:05:28,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-28 09:05:28,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 551 transitions. [2021-10-28 09:05:28,284 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7871428571428571 [2021-10-28 09:05:28,284 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 551 transitions. [2021-10-28 09:05:28,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 551 transitions. [2021-10-28 09:05:28,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:05:28,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 551 transitions. [2021-10-28 09:05:28,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 78.71428571428571) internal successors, (551), 7 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:05:28,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 100.0) internal successors, (800), 8 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:05:28,291 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 100.0) internal successors, (800), 8 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:05:28,294 INFO L186 Difference]: Start difference. First operand has 102 places, 91 transitions, 237 flow. Second operand 7 states and 551 transitions. [2021-10-28 09:05:28,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 93 transitions, 288 flow [2021-10-28 09:05:28,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 93 transitions, 280 flow, removed 1 selfloop flow, removed 3 redundant places. [2021-10-28 09:05:28,299 INFO L242 Difference]: Finished difference. Result has 106 places, 88 transitions, 222 flow [2021-10-28 09:05:28,300 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=222, PETRI_PLACES=106, PETRI_TRANSITIONS=88} [2021-10-28 09:05:28,300 INFO L334 CegarLoopForPetriNet]: 95 programPoint places, 11 predicate places. [2021-10-28 09:05:28,300 INFO L470 AbstractCegarLoop]: Abstraction has has 106 places, 88 transitions, 222 flow [2021-10-28 09:05:28,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 77.85714285714286) internal successors, (545), 7 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:05:28,301 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:05:28,301 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:05:28,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 09:05:28,302 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:05:28,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:05:28,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1527840155, now seen corresponding path program 7 times [2021-10-28 09:05:28,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:05:28,303 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163274355] [2021-10-28 09:05:28,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:05:28,304 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:05:28,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:05:28,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:05:28,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:05:28,550 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163274355] [2021-10-28 09:05:28,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163274355] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:05:28,550 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:05:28,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 09:05:28,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876321280] [2021-10-28 09:05:28,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:05:28,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:05:28,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:05:28,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:05:28,554 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 100 [2021-10-28 09:05:28,555 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 88 transitions, 222 flow. Second operand has 8 states, 8 states have (on average 77.5) internal successors, (620), 8 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:05:28,555 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:05:28,555 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 100 [2021-10-28 09:05:28,555 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:05:28,675 INFO L129 PetriNetUnfolder]: 6/142 cut-off events. [2021-10-28 09:05:28,675 INFO L130 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2021-10-28 09:05:28,675 INFO L84 FinitePrefix]: Finished finitePrefix Result has 237 conditions, 142 events. 6/142 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 231 event pairs, 4 based on Foata normal form. 3/143 useless extension candidates. Maximal degree in co-relation 153. Up to 29 conditions per place. [2021-10-28 09:05:28,676 INFO L132 encePairwiseOnDemand]: 93/100 looper letters, 15 selfloop transitions, 6 changer transitions 3/92 dead transitions. [2021-10-28 09:05:28,676 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 92 transitions, 282 flow [2021-10-28 09:05:28,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:05:28,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-28 09:05:28,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 626 transitions. [2021-10-28 09:05:28,679 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7825 [2021-10-28 09:05:28,679 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 626 transitions. [2021-10-28 09:05:28,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 626 transitions. [2021-10-28 09:05:28,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:05:28,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 626 transitions. [2021-10-28 09:05:28,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 78.25) internal successors, (626), 8 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:05:28,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 100.0) internal successors, (900), 9 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:05:28,685 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 100.0) internal successors, (900), 9 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:05:28,685 INFO L186 Difference]: Start difference. First operand has 106 places, 88 transitions, 222 flow. Second operand 8 states and 626 transitions. [2021-10-28 09:05:28,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 92 transitions, 282 flow [2021-10-28 09:05:28,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 92 transitions, 266 flow, removed 3 selfloop flow, removed 7 redundant places. [2021-10-28 09:05:28,688 INFO L242 Difference]: Finished difference. Result has 105 places, 88 transitions, 226 flow [2021-10-28 09:05:28,689 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=226, PETRI_PLACES=105, PETRI_TRANSITIONS=88} [2021-10-28 09:05:28,689 INFO L334 CegarLoopForPetriNet]: 95 programPoint places, 10 predicate places. [2021-10-28 09:05:28,689 INFO L470 AbstractCegarLoop]: Abstraction has has 105 places, 88 transitions, 226 flow [2021-10-28 09:05:28,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 77.5) internal successors, (620), 8 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:05:28,690 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:05:28,690 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:05:28,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 09:05:28,690 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:05:28,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:05:28,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1440694071, now seen corresponding path program 8 times [2021-10-28 09:05:28,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:05:28,691 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412827714] [2021-10-28 09:05:28,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:05:28,691 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:05:28,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:05:28,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:05:28,829 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:05:28,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412827714] [2021-10-28 09:05:28,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412827714] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:05:28,829 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:05:28,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-28 09:05:28,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887119219] [2021-10-28 09:05:28,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 09:05:28,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:05:28,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 09:05:28,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:05:28,834 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 100 [2021-10-28 09:05:28,836 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 88 transitions, 226 flow. Second operand has 9 states, 9 states have (on average 77.22222222222223) internal successors, (695), 9 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:05:28,836 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:05:28,836 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 100 [2021-10-28 09:05:28,836 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:05:28,903 INFO L129 PetriNetUnfolder]: 2/77 cut-off events. [2021-10-28 09:05:28,903 INFO L130 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2021-10-28 09:05:28,905 INFO L84 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 77 events. 2/77 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 50 event pairs, 1 based on Foata normal form. 3/80 useless extension candidates. Maximal degree in co-relation 108. Up to 6 conditions per place. [2021-10-28 09:05:28,905 INFO L132 encePairwiseOnDemand]: 90/100 looper letters, 0 selfloop transitions, 0 changer transitions 67/67 dead transitions. [2021-10-28 09:05:28,906 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 67 transitions, 203 flow [2021-10-28 09:05:28,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:05:28,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-28 09:05:28,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 690 transitions. [2021-10-28 09:05:28,909 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7666666666666667 [2021-10-28 09:05:28,910 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 690 transitions. [2021-10-28 09:05:28,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 690 transitions. [2021-10-28 09:05:28,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:05:28,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 690 transitions. [2021-10-28 09:05:28,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 76.66666666666667) internal successors, (690), 9 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:05:28,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 100.0) internal successors, (1000), 10 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:05:28,917 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 100.0) internal successors, (1000), 10 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:05:28,917 INFO L186 Difference]: Start difference. First operand has 105 places, 88 transitions, 226 flow. Second operand 9 states and 690 transitions. [2021-10-28 09:05:28,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 67 transitions, 203 flow [2021-10-28 09:05:28,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 67 transitions, 180 flow, removed 3 selfloop flow, removed 9 redundant places. [2021-10-28 09:05:28,920 INFO L242 Difference]: Finished difference. Result has 81 places, 0 transitions, 0 flow [2021-10-28 09:05:28,920 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=81, PETRI_TRANSITIONS=0} [2021-10-28 09:05:28,920 INFO L334 CegarLoopForPetriNet]: 95 programPoint places, -14 predicate places. [2021-10-28 09:05:28,920 INFO L470 AbstractCegarLoop]: Abstraction has has 81 places, 0 transitions, 0 flow [2021-10-28 09:05:28,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 77.22222222222223) internal successors, (695), 9 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:05:28,924 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:05:28,924 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-28 09:05:28,924 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-28 09:05:28,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-28 09:05:28,928 INFO L731 BasicCegarLoop]: Path program histogram: [8] [2021-10-28 09:05:28,933 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-28 09:05:28,934 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:05:28,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:05:28 BasicIcfg [2021-10-28 09:05:28,936 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:05:28,937 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:05:28,937 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:05:28,937 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:05:28,938 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:05:24" (3/4) ... [2021-10-28 09:05:28,941 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 09:05:28,948 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-28 09:05:28,948 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-28 09:05:28,955 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-28 09:05:28,956 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-28 09:05:28,957 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 09:05:28,957 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 09:05:29,020 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b8157a-a824-4865-ae06-f8a426cf25c7/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:05:29,021 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:05:29,023 INFO L168 Benchmark]: Toolchain (without parser) took 5792.03 ms. Allocated memory was 96.5 MB in the beginning and 142.6 MB in the end (delta: 46.1 MB). Free memory was 63.3 MB in the beginning and 78.4 MB in the end (delta: -15.2 MB). Peak memory consumption was 31.0 MB. Max. memory is 16.1 GB. [2021-10-28 09:05:29,023 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 96.5 MB. Free memory is still 51.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:05:29,024 INFO L168 Benchmark]: CACSL2BoogieTranslator took 365.53 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 63.1 MB in the beginning and 91.1 MB in the end (delta: -28.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:05:29,025 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.97 ms. Allocated memory is still 117.4 MB. Free memory was 91.1 MB in the beginning and 89.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:05:29,025 INFO L168 Benchmark]: Boogie Preprocessor took 28.45 ms. Allocated memory is still 117.4 MB. Free memory was 89.3 MB in the beginning and 88.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:05:29,025 INFO L168 Benchmark]: RCFGBuilder took 838.57 ms. Allocated memory is still 117.4 MB. Free memory was 88.0 MB in the beginning and 70.1 MB in the end (delta: 17.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-28 09:05:29,026 INFO L168 Benchmark]: TraceAbstraction took 4425.27 ms. Allocated memory was 117.4 MB in the beginning and 142.6 MB in the end (delta: 25.2 MB). Free memory was 69.8 MB in the beginning and 81.6 MB in the end (delta: -11.8 MB). Peak memory consumption was 15.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:05:29,026 INFO L168 Benchmark]: Witness Printer took 83.94 ms. Allocated memory is still 142.6 MB. Free memory was 81.6 MB in the beginning and 78.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:05:29,029 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 96.5 MB. Free memory is still 51.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 365.53 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 63.1 MB in the beginning and 91.1 MB in the end (delta: -28.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.97 ms. Allocated memory is still 117.4 MB. Free memory was 91.1 MB in the beginning and 89.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.45 ms. Allocated memory is still 117.4 MB. Free memory was 89.3 MB in the beginning and 88.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 838.57 ms. Allocated memory is still 117.4 MB. Free memory was 88.0 MB in the beginning and 70.1 MB in the end (delta: 17.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4425.27 ms. Allocated memory was 117.4 MB in the beginning and 142.6 MB in the end (delta: 25.2 MB). Free memory was 69.8 MB in the beginning and 81.6 MB in the end (delta: -11.8 MB). Peak memory consumption was 15.1 MB. Max. memory is 16.1 GB. * Witness Printer took 83.94 ms. Allocated memory is still 142.6 MB. Free memory was 81.6 MB in the beginning and 78.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 130]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 125 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.2s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 100 SDtfs, 128 SDslu, 182 SDs, 0 SdLazy, 494 SolverSat, 62 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 92 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=285occurred in iteration=2, InterpolantAutomatonStates: 66, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 688 NumberOfCodeBlocks, 688 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 680 ConstructedInterpolants, 0 QuantifiedInterpolants, 2069 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-28 09:05:29,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b8157a-a824-4865-ae06-f8a426cf25c7/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...