./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/stack_longest-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6df4fe9-6c8c-4876-9271-7c3439f709c4/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6df4fe9-6c8c-4876-9271-7c3439f709c4/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6df4fe9-6c8c-4876-9271-7c3439f709c4/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6df4fe9-6c8c-4876-9271-7c3439f709c4/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/stack_longest-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6df4fe9-6c8c-4876-9271-7c3439f709c4/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6df4fe9-6c8c-4876-9271-7c3439f709c4/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 529fe0895c01c52d9b18b51c32204a307faf547c0c07b22bc1a431308affcf90 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:25:12,697 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:25:12,699 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:25:12,723 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:25:12,726 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:25:12,728 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:25:12,729 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:25:12,730 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:25:12,732 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:25:12,733 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:25:12,734 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:25:12,735 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:25:12,735 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:25:12,736 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:25:12,737 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:25:12,745 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:25:12,746 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:25:12,751 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:25:12,755 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:25:12,758 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:25:12,760 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:25:12,764 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:25:12,765 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:25:12,766 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:25:12,769 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:25:12,769 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:25:12,770 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:25:12,770 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:25:12,771 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:25:12,772 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:25:12,772 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:25:12,773 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:25:12,774 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:25:12,774 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:25:12,784 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:25:12,784 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:25:12,785 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:25:12,785 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:25:12,785 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:25:12,786 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:25:12,787 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:25:12,788 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6df4fe9-6c8c-4876-9271-7c3439f709c4/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 12:25:12,826 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:25:12,826 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:25:12,826 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:25:12,830 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:25:12,831 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:25:12,831 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:25:12,832 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:25:12,832 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:25:12,832 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:25:12,832 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:25:12,833 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:25:12,834 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:25:12,834 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:25:12,834 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:25:12,834 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:25:12,834 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:25:12,843 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:25:12,844 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:25:12,845 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:25:12,845 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:25:12,845 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:25:12,845 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:25:12,845 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:25:12,846 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:25:12,846 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:25:12,846 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:25:12,847 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:25:12,847 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:25:12,847 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:25:12,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:25:12,847 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:25:12,848 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:25:12,848 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:25:12,848 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_d6df4fe9-6c8c-4876-9271-7c3439f709c4/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6df4fe9-6c8c-4876-9271-7c3439f709c4/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 529fe0895c01c52d9b18b51c32204a307faf547c0c07b22bc1a431308affcf90 [2022-11-16 12:25:13,122 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:25:13,148 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:25:13,151 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:25:13,152 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:25:13,153 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:25:13,154 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6df4fe9-6c8c-4876-9271-7c3439f709c4/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/pthread/stack_longest-1.i [2022-11-16 12:25:13,224 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6df4fe9-6c8c-4876-9271-7c3439f709c4/bin/uautomizer-tPACEb0tL8/data/2ea073f3f/a4412fb1919a48d9909a75eb7ec34bec/FLAG6a5bc1f39 [2022-11-16 12:25:13,782 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:25:13,783 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6df4fe9-6c8c-4876-9271-7c3439f709c4/sv-benchmarks/c/pthread/stack_longest-1.i [2022-11-16 12:25:13,799 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6df4fe9-6c8c-4876-9271-7c3439f709c4/bin/uautomizer-tPACEb0tL8/data/2ea073f3f/a4412fb1919a48d9909a75eb7ec34bec/FLAG6a5bc1f39 [2022-11-16 12:25:14,048 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6df4fe9-6c8c-4876-9271-7c3439f709c4/bin/uautomizer-tPACEb0tL8/data/2ea073f3f/a4412fb1919a48d9909a75eb7ec34bec [2022-11-16 12:25:14,050 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:25:14,052 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:25:14,053 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:25:14,053 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:25:14,057 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:25:14,058 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:25:14" (1/1) ... [2022-11-16 12:25:14,059 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b3a4040 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:25:14, skipping insertion in model container [2022-11-16 12:25:14,059 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:25:14" (1/1) ... [2022-11-16 12:25:14,067 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:25:14,134 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:25:14,630 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6df4fe9-6c8c-4876-9271-7c3439f709c4/sv-benchmarks/c/pthread/stack_longest-1.i[41530,41543] [2022-11-16 12:25:14,674 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:25:14,686 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:25:14,747 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6df4fe9-6c8c-4876-9271-7c3439f709c4/sv-benchmarks/c/pthread/stack_longest-1.i[41530,41543] [2022-11-16 12:25:14,757 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:25:14,806 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:25:14,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:25:14 WrapperNode [2022-11-16 12:25:14,807 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:25:14,808 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:25:14,808 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:25:14,808 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:25:14,816 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:25:14" (1/1) ... [2022-11-16 12:25:14,845 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:25:14" (1/1) ... [2022-11-16 12:25:14,894 INFO L138 Inliner]: procedures = 277, calls = 41, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 157 [2022-11-16 12:25:14,895 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:25:14,896 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:25:14,896 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:25:14,896 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:25:14,905 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:25:14" (1/1) ... [2022-11-16 12:25:14,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:25:14" (1/1) ... [2022-11-16 12:25:14,919 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:25:14" (1/1) ... [2022-11-16 12:25:14,921 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:25:14" (1/1) ... [2022-11-16 12:25:14,928 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:25:14" (1/1) ... [2022-11-16 12:25:14,931 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:25:14" (1/1) ... [2022-11-16 12:25:14,933 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:25:14" (1/1) ... [2022-11-16 12:25:14,934 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:25:14" (1/1) ... [2022-11-16 12:25:14,937 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:25:14,938 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:25:14,938 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:25:14,938 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:25:14,939 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:25:14" (1/1) ... [2022-11-16 12:25:14,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:25:14,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6df4fe9-6c8c-4876-9271-7c3439f709c4/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:25:14,979 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6df4fe9-6c8c-4876-9271-7c3439f709c4/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:25:14,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6df4fe9-6c8c-4876-9271-7c3439f709c4/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:25:15,029 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-16 12:25:15,030 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-16 12:25:15,030 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-16 12:25:15,031 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-16 12:25:15,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:25:15,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:25:15,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:25:15,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:25:15,031 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-16 12:25:15,032 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:25:15,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:25:15,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:25:15,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:25:15,034 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:25:15,263 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:25:15,265 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:25:15,580 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:25:15,589 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:25:15,590 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-16 12:25:15,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:25:15 BoogieIcfgContainer [2022-11-16 12:25:15,592 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:25:15,595 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:25:15,595 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:25:15,598 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:25:15,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:25:14" (1/3) ... [2022-11-16 12:25:15,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2156e4b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:25:15, skipping insertion in model container [2022-11-16 12:25:15,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:25:14" (2/3) ... [2022-11-16 12:25:15,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2156e4b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:25:15, skipping insertion in model container [2022-11-16 12:25:15,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:25:15" (3/3) ... [2022-11-16 12:25:15,601 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longest-1.i [2022-11-16 12:25:15,622 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:25:15,633 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:25:15,633 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-16 12:25:15,633 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:25:15,856 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-16 12:25:15,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 178 places, 181 transitions, 378 flow [2022-11-16 12:25:16,004 INFO L130 PetriNetUnfolder]: 10/179 cut-off events. [2022-11-16 12:25:16,004 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-16 12:25:16,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 179 events. 10/179 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 435 event pairs, 0 based on Foata normal form. 0/167 useless extension candidates. Maximal degree in co-relation 135. Up to 3 conditions per place. [2022-11-16 12:25:16,013 INFO L82 GeneralOperation]: Start removeDead. Operand has 178 places, 181 transitions, 378 flow [2022-11-16 12:25:16,019 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 169 transitions, 347 flow [2022-11-16 12:25:16,036 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:25:16,049 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@38a58b52, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:25:16,049 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-16 12:25:16,121 INFO L130 PetriNetUnfolder]: 4/133 cut-off events. [2022-11-16 12:25:16,121 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-16 12:25:16,122 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:25:16,122 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:25:16,123 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:25:16,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:25:16,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1280999539, now seen corresponding path program 1 times [2022-11-16 12:25:16,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:25:16,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668762421] [2022-11-16 12:25:16,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:25:16,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:25:16,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:16,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:25:16,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:25:16,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668762421] [2022-11-16 12:25:16,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668762421] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:25:16,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:25:16,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:25:16,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676525480] [2022-11-16 12:25:16,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:25:16,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:25:16,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:25:16,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:25:16,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:25:16,709 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 181 [2022-11-16 12:25:16,713 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 169 transitions, 347 flow. Second operand has 3 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:16,713 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:25:16,714 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 181 [2022-11-16 12:25:16,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:25:16,949 INFO L130 PetriNetUnfolder]: 91/892 cut-off events. [2022-11-16 12:25:16,950 INFO L131 PetriNetUnfolder]: For 46/46 co-relation queries the response was YES. [2022-11-16 12:25:16,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1054 conditions, 892 events. 91/892 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 5311 event pairs, 15 based on Foata normal form. 61/880 useless extension candidates. Maximal degree in co-relation 903. Up to 96 conditions per place. [2022-11-16 12:25:16,964 INFO L137 encePairwiseOnDemand]: 172/181 looper letters, 19 selfloop transitions, 3 changer transitions 0/169 dead transitions. [2022-11-16 12:25:16,964 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 169 transitions, 397 flow [2022-11-16 12:25:16,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:25:16,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:25:16,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 512 transitions. [2022-11-16 12:25:16,989 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9429097605893186 [2022-11-16 12:25:16,990 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 512 transitions. [2022-11-16 12:25:16,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 512 transitions. [2022-11-16 12:25:16,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:25:16,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 512 transitions. [2022-11-16 12:25:17,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:17,017 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 181.0) internal successors, (724), 4 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:17,018 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 181.0) internal successors, (724), 4 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:17,020 INFO L175 Difference]: Start difference. First operand has 166 places, 169 transitions, 347 flow. Second operand 3 states and 512 transitions. [2022-11-16 12:25:17,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 169 transitions, 397 flow [2022-11-16 12:25:17,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 169 transitions, 389 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:25:17,031 INFO L231 Difference]: Finished difference. Result has 162 places, 162 transitions, 343 flow [2022-11-16 12:25:17,033 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=343, PETRI_PLACES=162, PETRI_TRANSITIONS=162} [2022-11-16 12:25:17,039 INFO L288 CegarLoopForPetriNet]: 166 programPoint places, -4 predicate places. [2022-11-16 12:25:17,040 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 162 transitions, 343 flow [2022-11-16 12:25:17,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:17,040 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:25:17,041 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:25:17,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:25:17,042 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:25:17,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:25:17,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1423440447, now seen corresponding path program 1 times [2022-11-16 12:25:17,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:25:17,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870264731] [2022-11-16 12:25:17,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:25:17,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:25:17,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:17,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:25:17,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:25:17,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870264731] [2022-11-16 12:25:17,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870264731] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:25:17,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:25:17,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:25:17,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82256552] [2022-11-16 12:25:17,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:25:17,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:25:17,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:25:17,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:25:17,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:25:17,307 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 181 [2022-11-16 12:25:17,308 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 162 transitions, 343 flow. Second operand has 3 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:17,308 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:25:17,308 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 181 [2022-11-16 12:25:17,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:25:17,389 INFO L130 PetriNetUnfolder]: 21/421 cut-off events. [2022-11-16 12:25:17,389 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-16 12:25:17,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 467 conditions, 421 events. 21/421 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1377 event pairs, 4 based on Foata normal form. 0/395 useless extension candidates. Maximal degree in co-relation 376. Up to 16 conditions per place. [2022-11-16 12:25:17,393 INFO L137 encePairwiseOnDemand]: 178/181 looper letters, 9 selfloop transitions, 2 changer transitions 0/165 dead transitions. [2022-11-16 12:25:17,394 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 165 transitions, 371 flow [2022-11-16 12:25:17,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:25:17,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:25:17,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 510 transitions. [2022-11-16 12:25:17,396 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9392265193370166 [2022-11-16 12:25:17,396 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 510 transitions. [2022-11-16 12:25:17,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 510 transitions. [2022-11-16 12:25:17,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:25:17,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 510 transitions. [2022-11-16 12:25:17,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:17,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 181.0) internal successors, (724), 4 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:17,402 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 181.0) internal successors, (724), 4 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:17,402 INFO L175 Difference]: Start difference. First operand has 162 places, 162 transitions, 343 flow. Second operand 3 states and 510 transitions. [2022-11-16 12:25:17,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 165 transitions, 371 flow [2022-11-16 12:25:17,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 165 transitions, 369 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:25:17,409 INFO L231 Difference]: Finished difference. Result has 164 places, 162 transitions, 348 flow [2022-11-16 12:25:17,409 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=348, PETRI_PLACES=164, PETRI_TRANSITIONS=162} [2022-11-16 12:25:17,410 INFO L288 CegarLoopForPetriNet]: 166 programPoint places, -2 predicate places. [2022-11-16 12:25:17,411 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 162 transitions, 348 flow [2022-11-16 12:25:17,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:17,411 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:25:17,412 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:25:17,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:25:17,413 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:25:17,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:25:17,415 INFO L85 PathProgramCache]: Analyzing trace with hash -562776943, now seen corresponding path program 1 times [2022-11-16 12:25:17,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:25:17,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370469287] [2022-11-16 12:25:17,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:25:17,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:25:17,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:17,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:25:17,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:25:17,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370469287] [2022-11-16 12:25:17,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370469287] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:25:17,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:25:17,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:25:17,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773232196] [2022-11-16 12:25:17,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:25:17,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:25:17,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:25:17,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:25:17,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:25:17,606 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 181 [2022-11-16 12:25:17,607 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 162 transitions, 348 flow. Second operand has 4 states, 4 states have (on average 162.75) internal successors, (651), 4 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:17,608 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:25:17,608 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 181 [2022-11-16 12:25:17,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:25:17,766 INFO L130 PetriNetUnfolder]: 41/518 cut-off events. [2022-11-16 12:25:17,766 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-16 12:25:17,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 664 conditions, 518 events. 41/518 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2045 event pairs, 13 based on Foata normal form. 0/487 useless extension candidates. Maximal degree in co-relation 403. Up to 37 conditions per place. [2022-11-16 12:25:17,771 INFO L137 encePairwiseOnDemand]: 176/181 looper letters, 16 selfloop transitions, 4 changer transitions 0/170 dead transitions. [2022-11-16 12:25:17,771 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 170 transitions, 409 flow [2022-11-16 12:25:17,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:25:17,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:25:17,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 665 transitions. [2022-11-16 12:25:17,775 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9185082872928176 [2022-11-16 12:25:17,775 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 665 transitions. [2022-11-16 12:25:17,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 665 transitions. [2022-11-16 12:25:17,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:25:17,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 665 transitions. [2022-11-16 12:25:17,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 166.25) internal successors, (665), 4 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:17,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 181.0) internal successors, (905), 5 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:17,781 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 181.0) internal successors, (905), 5 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:17,781 INFO L175 Difference]: Start difference. First operand has 164 places, 162 transitions, 348 flow. Second operand 4 states and 665 transitions. [2022-11-16 12:25:17,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 170 transitions, 409 flow [2022-11-16 12:25:17,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 170 transitions, 407 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:25:17,786 INFO L231 Difference]: Finished difference. Result has 168 places, 165 transitions, 374 flow [2022-11-16 12:25:17,787 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=374, PETRI_PLACES=168, PETRI_TRANSITIONS=165} [2022-11-16 12:25:17,788 INFO L288 CegarLoopForPetriNet]: 166 programPoint places, 2 predicate places. [2022-11-16 12:25:17,788 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 165 transitions, 374 flow [2022-11-16 12:25:17,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 162.75) internal successors, (651), 4 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:17,789 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:25:17,789 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:25:17,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:25:17,790 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:25:17,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:25:17,791 INFO L85 PathProgramCache]: Analyzing trace with hash 429326295, now seen corresponding path program 1 times [2022-11-16 12:25:17,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:25:17,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410001747] [2022-11-16 12:25:17,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:25:17,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:25:17,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:18,038 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:25:18,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:25:18,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410001747] [2022-11-16 12:25:18,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410001747] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:25:18,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608170169] [2022-11-16 12:25:18,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:25:18,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:25:18,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6df4fe9-6c8c-4876-9271-7c3439f709c4/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:25:18,049 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6df4fe9-6c8c-4876-9271-7c3439f709c4/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:25:18,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6df4fe9-6c8c-4876-9271-7c3439f709c4/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:25:18,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:18,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:25:18,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:25:18,440 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:25:18,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:25:18,604 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:25:18,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608170169] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:25:18,605 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:25:18,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-16 12:25:18,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825235563] [2022-11-16 12:25:18,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:25:18,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:25:18,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:25:18,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:25:18,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:25:18,610 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 181 [2022-11-16 12:25:18,612 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 165 transitions, 374 flow. Second operand has 10 states, 10 states have (on average 160.5) internal successors, (1605), 10 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:18,612 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:25:18,613 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 181 [2022-11-16 12:25:18,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:25:19,101 INFO L130 PetriNetUnfolder]: 176/1670 cut-off events. [2022-11-16 12:25:19,102 INFO L131 PetriNetUnfolder]: For 83/83 co-relation queries the response was YES. [2022-11-16 12:25:19,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2230 conditions, 1670 events. 176/1670 cut-off events. For 83/83 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 10743 event pairs, 28 based on Foata normal form. 9/1586 useless extension candidates. Maximal degree in co-relation 1750. Up to 135 conditions per place. [2022-11-16 12:25:19,123 INFO L137 encePairwiseOnDemand]: 175/181 looper letters, 48 selfloop transitions, 14 changer transitions 0/211 dead transitions. [2022-11-16 12:25:19,123 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 211 transitions, 623 flow [2022-11-16 12:25:19,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:25:19,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 12:25:19,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1644 transitions. [2022-11-16 12:25:19,129 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9082872928176795 [2022-11-16 12:25:19,129 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1644 transitions. [2022-11-16 12:25:19,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1644 transitions. [2022-11-16 12:25:19,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:25:19,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1644 transitions. [2022-11-16 12:25:19,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 164.4) internal successors, (1644), 10 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:19,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 181.0) internal successors, (1991), 11 states have internal predecessors, (1991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:19,146 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 181.0) internal successors, (1991), 11 states have internal predecessors, (1991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:19,146 INFO L175 Difference]: Start difference. First operand has 168 places, 165 transitions, 374 flow. Second operand 10 states and 1644 transitions. [2022-11-16 12:25:19,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 211 transitions, 623 flow [2022-11-16 12:25:19,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 211 transitions, 621 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:25:19,154 INFO L231 Difference]: Finished difference. Result has 179 places, 178 transitions, 466 flow [2022-11-16 12:25:19,155 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=466, PETRI_PLACES=179, PETRI_TRANSITIONS=178} [2022-11-16 12:25:19,156 INFO L288 CegarLoopForPetriNet]: 166 programPoint places, 13 predicate places. [2022-11-16 12:25:19,156 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 178 transitions, 466 flow [2022-11-16 12:25:19,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 160.5) internal successors, (1605), 10 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:19,158 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:25:19,159 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:25:19,171 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6df4fe9-6c8c-4876-9271-7c3439f709c4/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:25:19,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6df4fe9-6c8c-4876-9271-7c3439f709c4/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:25:19,365 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:25:19,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:25:19,365 INFO L85 PathProgramCache]: Analyzing trace with hash 248706538, now seen corresponding path program 1 times [2022-11-16 12:25:19,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:25:19,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802140489] [2022-11-16 12:25:19,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:25:19,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:25:19,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:19,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:25:19,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:25:19,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802140489] [2022-11-16 12:25:19,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802140489] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:25:19,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:25:19,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:25:19,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981218465] [2022-11-16 12:25:19,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:25:19,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:25:19,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:25:19,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:25:19,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:25:19,541 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 181 [2022-11-16 12:25:19,541 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 178 transitions, 466 flow. Second operand has 3 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:19,542 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:25:19,542 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 181 [2022-11-16 12:25:19,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:25:19,725 INFO L130 PetriNetUnfolder]: 50/1067 cut-off events. [2022-11-16 12:25:19,725 INFO L131 PetriNetUnfolder]: For 56/56 co-relation queries the response was YES. [2022-11-16 12:25:19,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1363 conditions, 1067 events. 50/1067 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 4639 event pairs, 10 based on Foata normal form. 12/1033 useless extension candidates. Maximal degree in co-relation 998. Up to 46 conditions per place. [2022-11-16 12:25:19,732 INFO L137 encePairwiseOnDemand]: 177/181 looper letters, 12 selfloop transitions, 4 changer transitions 0/175 dead transitions. [2022-11-16 12:25:19,732 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 175 transitions, 477 flow [2022-11-16 12:25:19,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:25:19,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:25:19,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 495 transitions. [2022-11-16 12:25:19,734 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9116022099447514 [2022-11-16 12:25:19,735 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 495 transitions. [2022-11-16 12:25:19,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 495 transitions. [2022-11-16 12:25:19,735 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:25:19,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 495 transitions. [2022-11-16 12:25:19,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:19,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 181.0) internal successors, (724), 4 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:19,738 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 181.0) internal successors, (724), 4 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:19,739 INFO L175 Difference]: Start difference. First operand has 179 places, 178 transitions, 466 flow. Second operand 3 states and 495 transitions. [2022-11-16 12:25:19,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 175 transitions, 477 flow [2022-11-16 12:25:19,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 175 transitions, 465 flow, removed 5 selfloop flow, removed 1 redundant places. [2022-11-16 12:25:19,744 INFO L231 Difference]: Finished difference. Result has 179 places, 173 transitions, 434 flow [2022-11-16 12:25:19,744 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=426, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=434, PETRI_PLACES=179, PETRI_TRANSITIONS=173} [2022-11-16 12:25:19,745 INFO L288 CegarLoopForPetriNet]: 166 programPoint places, 13 predicate places. [2022-11-16 12:25:19,745 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 173 transitions, 434 flow [2022-11-16 12:25:19,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:19,746 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:25:19,746 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:25:19,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:25:19,747 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:25:19,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:25:19,747 INFO L85 PathProgramCache]: Analyzing trace with hash 490722069, now seen corresponding path program 1 times [2022-11-16 12:25:19,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:25:19,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551844201] [2022-11-16 12:25:19,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:25:19,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:25:19,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:19,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:25:19,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:25:19,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551844201] [2022-11-16 12:25:19,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551844201] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:25:19,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:25:19,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:25:19,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673121824] [2022-11-16 12:25:19,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:25:19,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:25:19,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:25:19,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:25:19,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:25:19,934 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 181 [2022-11-16 12:25:19,937 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 173 transitions, 434 flow. Second operand has 7 states, 7 states have (on average 150.28571428571428) internal successors, (1052), 7 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:19,937 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:25:19,937 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 181 [2022-11-16 12:25:19,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:25:20,304 INFO L130 PetriNetUnfolder]: 116/1221 cut-off events. [2022-11-16 12:25:20,305 INFO L131 PetriNetUnfolder]: For 131/131 co-relation queries the response was YES. [2022-11-16 12:25:20,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1825 conditions, 1221 events. 116/1221 cut-off events. For 131/131 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 6053 event pairs, 19 based on Foata normal form. 0/1169 useless extension candidates. Maximal degree in co-relation 1103. Up to 178 conditions per place. [2022-11-16 12:25:20,313 INFO L137 encePairwiseOnDemand]: 170/181 looper letters, 49 selfloop transitions, 13 changer transitions 0/201 dead transitions. [2022-11-16 12:25:20,313 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 201 transitions, 643 flow [2022-11-16 12:25:20,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:25:20,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:25:20,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1389 transitions. [2022-11-16 12:25:20,317 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.852670349907919 [2022-11-16 12:25:20,317 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1389 transitions. [2022-11-16 12:25:20,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1389 transitions. [2022-11-16 12:25:20,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:25:20,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1389 transitions. [2022-11-16 12:25:20,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 154.33333333333334) internal successors, (1389), 9 states have internal predecessors, (1389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:20,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 181.0) internal successors, (1810), 10 states have internal predecessors, (1810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:20,325 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 181.0) internal successors, (1810), 10 states have internal predecessors, (1810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:20,326 INFO L175 Difference]: Start difference. First operand has 179 places, 173 transitions, 434 flow. Second operand 9 states and 1389 transitions. [2022-11-16 12:25:20,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 201 transitions, 643 flow [2022-11-16 12:25:20,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 201 transitions, 639 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:25:20,331 INFO L231 Difference]: Finished difference. Result has 191 places, 180 transitions, 518 flow [2022-11-16 12:25:20,332 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=518, PETRI_PLACES=191, PETRI_TRANSITIONS=180} [2022-11-16 12:25:20,332 INFO L288 CegarLoopForPetriNet]: 166 programPoint places, 25 predicate places. [2022-11-16 12:25:20,332 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 180 transitions, 518 flow [2022-11-16 12:25:20,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 150.28571428571428) internal successors, (1052), 7 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:20,333 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:25:20,334 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:25:20,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:25:20,334 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:25:20,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:25:20,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1845259255, now seen corresponding path program 1 times [2022-11-16 12:25:20,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:25:20,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861006125] [2022-11-16 12:25:20,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:25:20,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:25:20,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:22,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:25:22,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:25:22,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861006125] [2022-11-16 12:25:22,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861006125] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:25:22,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:25:22,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-11-16 12:25:22,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433611583] [2022-11-16 12:25:22,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:25:22,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-16 12:25:22,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:25:22,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-16 12:25:22,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=513, Unknown=0, NotChecked=0, Total=600 [2022-11-16 12:25:22,936 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 181 [2022-11-16 12:25:22,939 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 180 transitions, 518 flow. Second operand has 25 states, 25 states have (on average 102.44) internal successors, (2561), 25 states have internal predecessors, (2561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:22,940 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:25:22,940 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 181 [2022-11-16 12:25:22,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:25:26,721 INFO L130 PetriNetUnfolder]: 1025/4421 cut-off events. [2022-11-16 12:25:26,722 INFO L131 PetriNetUnfolder]: For 661/661 co-relation queries the response was YES. [2022-11-16 12:25:26,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7872 conditions, 4421 events. 1025/4421 cut-off events. For 661/661 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 32163 event pairs, 140 based on Foata normal form. 0/4281 useless extension candidates. Maximal degree in co-relation 6187. Up to 1092 conditions per place. [2022-11-16 12:25:26,753 INFO L137 encePairwiseOnDemand]: 156/181 looper letters, 227 selfloop transitions, 28 changer transitions 5/360 dead transitions. [2022-11-16 12:25:26,753 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 360 transitions, 1515 flow [2022-11-16 12:25:26,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 12:25:26,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-16 12:25:26,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2646 transitions. [2022-11-16 12:25:26,825 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6091160220994475 [2022-11-16 12:25:26,825 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2646 transitions. [2022-11-16 12:25:26,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2646 transitions. [2022-11-16 12:25:26,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:25:26,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2646 transitions. [2022-11-16 12:25:26,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 110.25) internal successors, (2646), 24 states have internal predecessors, (2646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:26,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 181.0) internal successors, (4525), 25 states have internal predecessors, (4525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:26,842 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 181.0) internal successors, (4525), 25 states have internal predecessors, (4525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:26,843 INFO L175 Difference]: Start difference. First operand has 191 places, 180 transitions, 518 flow. Second operand 24 states and 2646 transitions. [2022-11-16 12:25:26,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 360 transitions, 1515 flow [2022-11-16 12:25:26,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 360 transitions, 1501 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-11-16 12:25:26,853 INFO L231 Difference]: Finished difference. Result has 227 places, 203 transitions, 694 flow [2022-11-16 12:25:26,853 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=510, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=694, PETRI_PLACES=227, PETRI_TRANSITIONS=203} [2022-11-16 12:25:26,854 INFO L288 CegarLoopForPetriNet]: 166 programPoint places, 61 predicate places. [2022-11-16 12:25:26,854 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 203 transitions, 694 flow [2022-11-16 12:25:26,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 102.44) internal successors, (2561), 25 states have internal predecessors, (2561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:26,856 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:25:26,866 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:25:26,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:25:26,867 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:25:26,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:25:26,868 INFO L85 PathProgramCache]: Analyzing trace with hash -2095154163, now seen corresponding path program 1 times [2022-11-16 12:25:26,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:25:26,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986994384] [2022-11-16 12:25:26,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:25:26,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:25:26,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:25:26,913 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:25:26,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:25:27,005 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:25:27,006 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 12:25:27,007 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2022-11-16 12:25:27,009 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 6 remaining) [2022-11-16 12:25:27,009 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2022-11-16 12:25:27,009 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2022-11-16 12:25:27,009 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2022-11-16 12:25:27,010 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-11-16 12:25:27,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:25:27,010 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:25:27,016 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-16 12:25:27,017 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 12:25:27,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 12:25:27 BasicIcfg [2022-11-16 12:25:27,125 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 12:25:27,125 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 12:25:27,125 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 12:25:27,126 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 12:25:27,127 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:25:15" (3/4) ... [2022-11-16 12:25:27,129 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-16 12:25:27,285 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6df4fe9-6c8c-4876-9271-7c3439f709c4/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 12:25:27,285 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 12:25:27,286 INFO L158 Benchmark]: Toolchain (without parser) took 13234.32ms. Allocated memory was 111.1MB in the beginning and 402.7MB in the end (delta: 291.5MB). Free memory was 65.7MB in the beginning and 328.5MB in the end (delta: -262.8MB). Peak memory consumption was 123.2MB. Max. memory is 16.1GB. [2022-11-16 12:25:27,286 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 111.1MB. Free memory is still 83.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:25:27,287 INFO L158 Benchmark]: CACSL2BoogieTranslator took 754.19ms. Allocated memory is still 111.1MB. Free memory was 65.5MB in the beginning and 65.8MB in the end (delta: -220.9kB). Peak memory consumption was 6.7MB. Max. memory is 16.1GB. [2022-11-16 12:25:27,288 INFO L158 Benchmark]: Boogie Procedure Inliner took 87.16ms. Allocated memory is still 111.1MB. Free memory was 65.8MB in the beginning and 63.1MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:25:27,288 INFO L158 Benchmark]: Boogie Preprocessor took 41.50ms. Allocated memory is still 111.1MB. Free memory was 63.1MB in the beginning and 61.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:25:27,288 INFO L158 Benchmark]: RCFGBuilder took 654.13ms. Allocated memory was 111.1MB in the beginning and 146.8MB in the end (delta: 35.7MB). Free memory was 61.0MB in the beginning and 116.7MB in the end (delta: -55.7MB). Peak memory consumption was 24.7MB. Max. memory is 16.1GB. [2022-11-16 12:25:27,289 INFO L158 Benchmark]: TraceAbstraction took 11530.22ms. Allocated memory was 146.8MB in the beginning and 272.6MB in the end (delta: 125.8MB). Free memory was 116.0MB in the beginning and 137.7MB in the end (delta: -21.6MB). Peak memory consumption was 105.2MB. Max. memory is 16.1GB. [2022-11-16 12:25:27,289 INFO L158 Benchmark]: Witness Printer took 160.10ms. Allocated memory was 272.6MB in the beginning and 402.7MB in the end (delta: 130.0MB). Free memory was 137.7MB in the beginning and 328.5MB in the end (delta: -190.8MB). Peak memory consumption was 34.6MB. Max. memory is 16.1GB. [2022-11-16 12:25:27,292 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 111.1MB. Free memory is still 83.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 754.19ms. Allocated memory is still 111.1MB. Free memory was 65.5MB in the beginning and 65.8MB in the end (delta: -220.9kB). Peak memory consumption was 6.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 87.16ms. Allocated memory is still 111.1MB. Free memory was 65.8MB in the beginning and 63.1MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.50ms. Allocated memory is still 111.1MB. Free memory was 63.1MB in the beginning and 61.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 654.13ms. Allocated memory was 111.1MB in the beginning and 146.8MB in the end (delta: 35.7MB). Free memory was 61.0MB in the beginning and 116.7MB in the end (delta: -55.7MB). Peak memory consumption was 24.7MB. Max. memory is 16.1GB. * TraceAbstraction took 11530.22ms. Allocated memory was 146.8MB in the beginning and 272.6MB in the end (delta: 125.8MB). Free memory was 116.0MB in the beginning and 137.7MB in the end (delta: -21.6MB). Peak memory consumption was 105.2MB. Max. memory is 16.1GB. * Witness Printer took 160.10ms. Allocated memory was 272.6MB in the beginning and 402.7MB in the end (delta: 130.0MB). Free memory was 137.7MB in the beginning and 328.5MB in the end (delta: -190.8MB). Peak memory consumption was 34.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 941]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L936] 0 static unsigned int arr[(800)]; VAL [arr={5:0}] [L938] 0 _Bool flag=(0); VAL [arr={5:0}, flag=0] [L937] 0 pthread_mutex_t m; VAL [arr={5:0}, flag=0, m={6:0}] [L935] 0 static int top=0; VAL [arr={5:0}, flag=0, m={6:0}, top=0] [L1020] 0 pthread_t id1, id2; VAL [arr={5:0}, flag=0, id1={9:0}, id2={7:0}, m={6:0}, top=0] [L1022] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [arr={5:0}, flag=0, id1={9:0}, id2={7:0}, m={6:0}, pthread_create(&id1, ((void *)0), t1, ((void *)0))=13, top=0] [L989] 1 int i; VAL [arg={0:0}, arg={0:0}, arr={5:0}, flag=0, m={6:0}, top=0] [L990] 1 unsigned int tmp; VAL [arg={0:0}, arg={0:0}, arr={5:0}, flag=0, m={6:0}, top=0] [L991] 1 i=0 VAL [arg={0:0}, arg={0:0}, arr={5:0}, flag=0, i=0, m={6:0}, top=0] [L991] COND TRUE 1 i<(800) VAL [arg={0:0}, arg={0:0}, arr={5:0}, flag=0, i=0, m={6:0}, top=0] [L994] 1 tmp = __VERIFIER_nondet_uint() VAL [__VERIFIER_nondet_uint()=4294967306, arg={0:0}, arg={0:0}, arr={5:0}, flag=0, i=0, m={6:0}, tmp=10, top=0] [L995] CALL 1 assume_abort_if_not(tmp < (800)) [L1023] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [arr={5:0}, flag=0, id1={9:0}, id2={7:0}, m={6:0}, pthread_create(&id2, ((void *)0), t2, ((void *)0))=14, top=0] [L23] COND FALSE 1 !(!cond) VAL [\old(cond)=1, arr={5:0}, cond=1, flag=0, m={6:0}, top=0] [L995] RET 1 assume_abort_if_not(tmp < (800)) [L996] CALL, EXPR 1 push(arr,tmp) [L961] COND FALSE 1 !(top==(800)) VAL [\old(x)=10, arr={5:0}, flag=0, m={6:0}, stack={5:0}, stack={5:0}, top=0, x=10] [L968] CALL, EXPR 1 get_top() [L953] 1 return top; VAL [\result=0, arr={5:0}, flag=0, m={6:0}, top=0] [L968] RET, EXPR 1 get_top() [L968] 1 stack[get_top()] = x VAL [\old(x)=10, arr={5:0}, flag=0, get_top()=0, m={6:0}, stack={5:0}, stack={5:0}, top=0, x=10] [L969] CALL 1 inc_top() [L945] 1 top++ VAL [arr={5:0}, flag=0, m={6:0}, top=1] [L969] RET 1 inc_top() [L971] 1 return 0; VAL [\old(x)=10, \result=0, arr={5:0}, flag=0, m={6:0}, stack={5:0}, stack={5:0}, top=1, x=10] [L996] RET, EXPR 1 push(arr,tmp) [L996] COND FALSE 1 !(push(arr,tmp)==(-1)) VAL [arg={0:0}, arg={0:0}, arr={5:0}, flag=0, i=0, m={6:0}, push(arr,tmp)=0, tmp=10, top=1] [L998] 1 flag=(1) VAL [arg={0:0}, arg={0:0}, arr={5:0}, flag=1, i=0, m={6:0}, tmp=10, top=1] [L1005] 2 int i; VAL [arg={0:0}, arg={0:0}, arr={5:0}, flag=1, m={6:0}, top=1] [L1006] 2 i=0 VAL [arg={0:0}, arg={0:0}, arr={5:0}, flag=1, i=0, m={6:0}, top=1] [L1006] COND TRUE 2 i<(800) VAL [arg={0:0}, arg={0:0}, arr={5:0}, flag=1, i=0, m={6:0}, top=1] [L1009] COND TRUE 2 \read(flag) VAL [arg={0:0}, arg={0:0}, arr={5:0}, flag=1, i=0, m={6:0}, top=1] [L1011] CALL, EXPR 2 pop(arr) [L975] CALL, EXPR 2 get_top() [L953] 2 return top; VAL [\result=0, \result=1, arr={5:0}, flag=1, m={6:0}, top=1] [L975] RET, EXPR 2 get_top() [L975] COND FALSE 2 !(get_top()==0) VAL [arr={5:0}, flag=1, get_top()=1, m={6:0}, stack={5:0}, stack={5:0}, top=1] [L982] CALL 2 dec_top() [L949] 2 top-- VAL [arr={5:0}, flag=1, m={6:0}, top=0] [L982] RET 2 dec_top() [L983] CALL, EXPR 2 get_top() [L953] 2 return top; VAL [\result=0, \result=0, arr={5:0}, flag=1, m={6:0}, top=0] [L983] RET, EXPR 2 get_top() [L983] EXPR 2 stack[get_top()] VAL [arr={5:0}, flag=1, get_top()=0, m={6:0}, stack={5:0}, stack={5:0}, stack[get_top()]=10, top=0] [L983] 2 return stack[get_top()]; VAL [\result=10, arr={5:0}, flag=1, get_top()=0, m={6:0}, stack={5:0}, stack={5:0}, stack[get_top()]=10, top=0] [L1011] RET, EXPR 2 pop(arr) [L1011] COND FALSE 2 !(!(pop(arr)!=(-2))) VAL [arg={0:0}, arg={0:0}, arr={5:0}, flag=1, i=0, m={6:0}, pop(arr)=10, top=0] [L1006] 2 i++ VAL [arg={0:0}, arg={0:0}, arr={5:0}, flag=1, i=1, m={6:0}, top=0] [L1006] COND TRUE 2 i<(800) VAL [arg={0:0}, arg={0:0}, arr={5:0}, flag=1, i=1, m={6:0}, top=0] [L1009] COND TRUE 2 \read(flag) VAL [arg={0:0}, arg={0:0}, arr={5:0}, flag=1, i=1, m={6:0}, top=0] [L1011] CALL, EXPR 2 pop(arr) [L975] CALL, EXPR 2 get_top() [L953] 2 return top; VAL [\result=0, \result=0, arr={5:0}, flag=1, m={6:0}, top=0] [L975] RET, EXPR 2 get_top() [L975] COND TRUE 2 get_top()==0 VAL [arr={5:0}, flag=1, get_top()=0, m={6:0}, stack={5:0}, stack={5:0}, top=0] [L978] 2 return (-2); VAL [\result=-2, arr={5:0}, flag=1, m={6:0}, stack={5:0}, stack={5:0}, top=0] [L1011] RET, EXPR 2 pop(arr) [L1011] COND TRUE 2 !(pop(arr)!=(-2)) VAL [arg={0:0}, arg={0:0}, arr={5:0}, flag=1, i=1, m={6:0}, pop(arr)=-2, top=0] [L1012] CALL 2 error() [L941] 2 reach_error() VAL [arr={5:0}, flag=1, m={6:0}, top=0] - UnprovableResult [Line: 1022]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1023]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 941]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 290 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.1s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 11.1s, OverallIterations: 8, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 5.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 820 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 820 mSDsluCounter, 890 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 789 mSDsCounter, 32 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1393 IncrementalHoareTripleChecker+Invalid, 1425 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 32 mSolverCounterUnsat, 101 mSDtfsCounter, 1393 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 288 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=694occurred in iteration=7, InterpolantAutomatonStates: 56, 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: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.1s InterpolantComputationTime, 926 NumberOfCodeBlocks, 926 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 870 ConstructedInterpolants, 0 QuantifiedInterpolants, 5568 SizeOfPredicates, 2 NumberOfNonLiveVariables, 248 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 9 InterpolantComputations, 6 PerfectInterpolantSequences, 12/66 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 RESULT: Ultimate proved your program to be incorrect! [2022-11-16 12:25:27,326 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6df4fe9-6c8c-4876-9271-7c3439f709c4/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE