./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234a091a-9221-417f-8cab-b4dd099c16ad/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234a091a-9221-417f-8cab-b4dd099c16ad/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234a091a-9221-417f-8cab-b4dd099c16ad/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234a091a-9221-417f-8cab-b4dd099c16ad/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234a091a-9221-417f-8cab-b4dd099c16ad/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234a091a-9221-417f-8cab-b4dd099c16ad/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --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 81147b3e42a82bd92b2fd1c17836bc41bf8598e66ad2317620561a8ac507fa9a --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:53:42,495 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:53:42,580 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234a091a-9221-417f-8cab-b4dd099c16ad/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 04:53:42,586 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:53:42,586 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:53:42,624 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:53:42,625 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:53:42,625 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:53:42,626 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:53:42,626 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:53:42,627 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:53:42,627 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:53:42,628 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:53:42,628 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:53:42,628 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:53:42,629 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:53:42,629 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:53:42,629 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:53:42,629 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:53:42,629 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:53:42,629 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:53:42,629 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:53:42,629 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:53:42,629 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:53:42,629 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:53:42,629 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:53:42,630 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:53:42,630 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:53:42,630 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:53:42,630 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:53:42,630 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:53:42,630 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:53:42,631 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:53:42,631 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:53:42,631 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:53:42,631 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:53:42,631 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:53:42,631 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:53:42,631 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:53:42,631 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:53:42,631 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:53:42,631 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:53:42,631 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:53:42,632 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:53:42,632 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:53:42,632 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:53:42,632 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:53:42,632 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:53:42,632 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_234a091a-9221-417f-8cab-b4dd099c16ad/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness 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 -> 81147b3e42a82bd92b2fd1c17836bc41bf8598e66ad2317620561a8ac507fa9a [2024-11-28 04:53:42,952 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:53:42,964 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:53:42,968 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:53:42,970 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:53:42,970 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:53:42,971 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234a091a-9221-417f-8cab-b4dd099c16ad/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i [2024-11-28 04:53:46,170 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234a091a-9221-417f-8cab-b4dd099c16ad/bin/uautomizer-verify-aQ6SnzHsRB/data/716f55578/da2e26a725c24fbfa4cd70a5ca5b6b5d/FLAG9cea8f881 [2024-11-28 04:53:46,642 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:53:46,643 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234a091a-9221-417f-8cab-b4dd099c16ad/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i [2024-11-28 04:53:46,669 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234a091a-9221-417f-8cab-b4dd099c16ad/bin/uautomizer-verify-aQ6SnzHsRB/data/716f55578/da2e26a725c24fbfa4cd70a5ca5b6b5d/FLAG9cea8f881 [2024-11-28 04:53:46,688 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234a091a-9221-417f-8cab-b4dd099c16ad/bin/uautomizer-verify-aQ6SnzHsRB/data/716f55578/da2e26a725c24fbfa4cd70a5ca5b6b5d [2024-11-28 04:53:46,691 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:53:46,694 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:53:46,696 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:53:46,697 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:53:46,701 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:53:46,703 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:53:46" (1/1) ... [2024-11-28 04:53:46,705 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27bde929 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:53:46, skipping insertion in model container [2024-11-28 04:53:46,706 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:53:46" (1/1) ... [2024-11-28 04:53:46,774 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:53:47,021 WARN L250 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_234a091a-9221-417f-8cab-b4dd099c16ad/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i[820,833] [2024-11-28 04:53:47,458 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:53:47,474 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:53:47,486 WARN L250 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_234a091a-9221-417f-8cab-b4dd099c16ad/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i[820,833] [2024-11-28 04:53:47,545 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:53:47,642 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:53:47,643 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:53:47 WrapperNode [2024-11-28 04:53:47,644 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:53:47,645 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:53:47,645 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:53:47,645 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:53:47,656 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:53:47" (1/1) ... [2024-11-28 04:53:47,680 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:53:47" (1/1) ... [2024-11-28 04:53:47,713 INFO L138 Inliner]: procedures = 364, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 62 [2024-11-28 04:53:47,713 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:53:47,714 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:53:47,714 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:53:47,714 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:53:47,727 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:53:47" (1/1) ... [2024-11-28 04:53:47,727 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:53:47" (1/1) ... [2024-11-28 04:53:47,732 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:53:47" (1/1) ... [2024-11-28 04:53:47,750 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5]. The 0 writes are split as follows [0, 0]. [2024-11-28 04:53:47,750 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:53:47" (1/1) ... [2024-11-28 04:53:47,750 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:53:47" (1/1) ... [2024-11-28 04:53:47,756 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:53:47" (1/1) ... [2024-11-28 04:53:47,757 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:53:47" (1/1) ... [2024-11-28 04:53:47,761 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:53:47" (1/1) ... [2024-11-28 04:53:47,762 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:53:47" (1/1) ... [2024-11-28 04:53:47,763 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:53:47" (1/1) ... [2024-11-28 04:53:47,766 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:53:47,767 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:53:47,767 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:53:47,767 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:53:47,768 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:53:47" (1/1) ... [2024-11-28 04:53:47,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:53:47,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234a091a-9221-417f-8cab-b4dd099c16ad/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:53:47,804 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234a091a-9221-417f-8cab-b4dd099c16ad/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:53:47,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234a091a-9221-417f-8cab-b4dd099c16ad/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:53:47,834 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-28 04:53:47,834 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-28 04:53:47,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:53:47,835 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_mutex [2024-11-28 04:53:47,835 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_mutex [2024-11-28 04:53:47,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:53:47,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 04:53:47,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:53:47,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:53:47,837 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 04:53:48,044 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:53:48,046 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:53:48,285 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 04:53:48,285 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:53:48,424 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:53:48,425 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 04:53:48,425 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:53:48 BoogieIcfgContainer [2024-11-28 04:53:48,425 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:53:48,427 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:53:48,428 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:53:48,433 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:53:48,434 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:53:46" (1/3) ... [2024-11-28 04:53:48,434 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@84fbc17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:53:48, skipping insertion in model container [2024-11-28 04:53:48,435 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:53:47" (2/3) ... [2024-11-28 04:53:48,435 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@84fbc17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:53:48, skipping insertion in model container [2024-11-28 04:53:48,435 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:53:48" (3/3) ... [2024-11-28 04:53:48,436 INFO L128 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-1.i [2024-11-28 04:53:48,460 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:53:48,462 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pthread-demo-datarace-1.i that has 2 procedures, 22 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-28 04:53:48,463 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 04:53:48,526 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-28 04:53:48,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 25 places, 24 transitions, 55 flow [2024-11-28 04:53:48,597 INFO L124 PetriNetUnfolderBase]: 3/23 cut-off events. [2024-11-28 04:53:48,603 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-28 04:53:48,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28 conditions, 23 events. 3/23 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 32 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 14. Up to 2 conditions per place. [2024-11-28 04:53:48,606 INFO L82 GeneralOperation]: Start removeDead. Operand has 25 places, 24 transitions, 55 flow [2024-11-28 04:53:48,609 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 22 places, 20 transitions, 46 flow [2024-11-28 04:53:48,619 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:53:48,632 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@74ada62b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:53:48,633 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-28 04:53:48,642 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 04:53:48,642 INFO L124 PetriNetUnfolderBase]: 2/19 cut-off events. [2024-11-28 04:53:48,642 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-28 04:53:48,642 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:53:48,643 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:53:48,643 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 04:53:48,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:53:48,650 INFO L85 PathProgramCache]: Analyzing trace with hash -976704930, now seen corresponding path program 1 times [2024-11-28 04:53:48,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:53:48,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864466328] [2024-11-28 04:53:48,659 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:53:48,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:53:48,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:53:48,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:53:48,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:53:48,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864466328] [2024-11-28 04:53:48,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864466328] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:53:48,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:53:48,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:53:48,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980308287] [2024-11-28 04:53:48,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:53:48,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:53:48,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:53:48,930 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:53:48,931 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:53:48,941 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2024-11-28 04:53:48,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 20 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:53:48,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:53:48,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2024-11-28 04:53:48,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:53:49,118 INFO L124 PetriNetUnfolderBase]: 61/133 cut-off events. [2024-11-28 04:53:49,118 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-28 04:53:49,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 133 events. 61/133 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 394 event pairs, 27 based on Foata normal form. 6/138 useless extension candidates. Maximal degree in co-relation 247. Up to 77 conditions per place. [2024-11-28 04:53:49,125 INFO L140 encePairwiseOnDemand]: 21/24 looper letters, 24 selfloop transitions, 2 changer transitions 0/30 dead transitions. [2024-11-28 04:53:49,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 30 transitions, 118 flow [2024-11-28 04:53:49,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:53:49,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:53:49,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 45 transitions. [2024-11-28 04:53:49,148 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-11-28 04:53:49,151 INFO L175 Difference]: Start difference. First operand has 22 places, 20 transitions, 46 flow. Second operand 3 states and 45 transitions. [2024-11-28 04:53:49,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 30 transitions, 118 flow [2024-11-28 04:53:49,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 30 transitions, 114 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 04:53:49,159 INFO L231 Difference]: Finished difference. Result has 23 places, 21 transitions, 54 flow [2024-11-28 04:53:49,164 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=54, PETRI_PLACES=23, PETRI_TRANSITIONS=21} [2024-11-28 04:53:49,169 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 1 predicate places. [2024-11-28 04:53:49,169 INFO L471 AbstractCegarLoop]: Abstraction has has 23 places, 21 transitions, 54 flow [2024-11-28 04:53:49,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:53:49,169 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:53:49,170 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:53:49,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:53:49,171 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 04:53:49,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:53:49,173 INFO L85 PathProgramCache]: Analyzing trace with hash 749964248, now seen corresponding path program 1 times [2024-11-28 04:53:49,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:53:49,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060471808] [2024-11-28 04:53:49,174 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:53:49,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:53:49,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:53:49,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:53:49,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:53:49,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060471808] [2024-11-28 04:53:49,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060471808] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:53:49,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:53:49,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:53:49,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999069109] [2024-11-28 04:53:49,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:53:49,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:53:49,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:53:49,370 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:53:49,371 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:53:49,374 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2024-11-28 04:53:49,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 21 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:53:49,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:53:49,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2024-11-28 04:53:49,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:53:49,514 INFO L124 PetriNetUnfolderBase]: 101/220 cut-off events. [2024-11-28 04:53:49,514 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2024-11-28 04:53:49,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 479 conditions, 220 events. 101/220 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 765 event pairs, 53 based on Foata normal form. 10/230 useless extension candidates. Maximal degree in co-relation 144. Up to 125 conditions per place. [2024-11-28 04:53:49,517 INFO L140 encePairwiseOnDemand]: 21/24 looper letters, 26 selfloop transitions, 2 changer transitions 0/32 dead transitions. [2024-11-28 04:53:49,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 32 transitions, 142 flow [2024-11-28 04:53:49,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:53:49,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:53:49,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 45 transitions. [2024-11-28 04:53:49,519 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-11-28 04:53:49,519 INFO L175 Difference]: Start difference. First operand has 23 places, 21 transitions, 54 flow. Second operand 3 states and 45 transitions. [2024-11-28 04:53:49,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 32 transitions, 142 flow [2024-11-28 04:53:49,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 32 transitions, 138 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 04:53:49,521 INFO L231 Difference]: Finished difference. Result has 25 places, 22 transitions, 64 flow [2024-11-28 04:53:49,521 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=25, PETRI_TRANSITIONS=22} [2024-11-28 04:53:49,522 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 3 predicate places. [2024-11-28 04:53:49,522 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 22 transitions, 64 flow [2024-11-28 04:53:49,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:53:49,523 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:53:49,523 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:53:49,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 04:53:49,523 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 04:53:49,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:53:49,524 INFO L85 PathProgramCache]: Analyzing trace with hash -571934283, now seen corresponding path program 1 times [2024-11-28 04:53:49,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:53:49,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491591596] [2024-11-28 04:53:49,524 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:53:49,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:53:49,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:53:49,783 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:53:49,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:53:49,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491591596] [2024-11-28 04:53:49,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491591596] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:53:49,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:53:49,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:53:49,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812471967] [2024-11-28 04:53:49,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:53:49,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:53:49,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:53:49,785 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:53:49,785 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:53:49,785 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2024-11-28 04:53:49,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 22 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:53:49,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:53:49,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2024-11-28 04:53:49,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:53:49,911 INFO L124 PetriNetUnfolderBase]: 69/170 cut-off events. [2024-11-28 04:53:49,911 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2024-11-28 04:53:49,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 422 conditions, 170 events. 69/170 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 530 event pairs, 25 based on Foata normal form. 16/185 useless extension candidates. Maximal degree in co-relation 117. Up to 80 conditions per place. [2024-11-28 04:53:49,913 INFO L140 encePairwiseOnDemand]: 20/24 looper letters, 22 selfloop transitions, 4 changer transitions 0/30 dead transitions. [2024-11-28 04:53:49,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 30 transitions, 150 flow [2024-11-28 04:53:49,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:53:49,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:53:49,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 42 transitions. [2024-11-28 04:53:49,915 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-11-28 04:53:49,915 INFO L175 Difference]: Start difference. First operand has 25 places, 22 transitions, 64 flow. Second operand 3 states and 42 transitions. [2024-11-28 04:53:49,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 30 transitions, 150 flow [2024-11-28 04:53:49,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 30 transitions, 146 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 04:53:49,917 INFO L231 Difference]: Finished difference. Result has 26 places, 22 transitions, 70 flow [2024-11-28 04:53:49,917 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=26, PETRI_TRANSITIONS=22} [2024-11-28 04:53:49,918 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 4 predicate places. [2024-11-28 04:53:49,918 INFO L471 AbstractCegarLoop]: Abstraction has has 26 places, 22 transitions, 70 flow [2024-11-28 04:53:49,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:53:49,919 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:53:49,919 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:53:49,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 04:53:49,919 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 04:53:49,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:53:49,920 INFO L85 PathProgramCache]: Analyzing trace with hash 152168425, now seen corresponding path program 2 times [2024-11-28 04:53:49,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:53:49,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911168042] [2024-11-28 04:53:49,920 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:53:49,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:53:49,944 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 04:53:49,945 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:53:50,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:53:50,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:53:50,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911168042] [2024-11-28 04:53:50,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911168042] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:53:50,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:53:50,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:53:50,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485314048] [2024-11-28 04:53:50,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:53:50,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:53:50,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:53:50,048 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:53:50,048 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:53:50,054 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2024-11-28 04:53:50,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 22 transitions, 70 flow. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:53:50,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:53:50,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2024-11-28 04:53:50,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:53:50,183 INFO L124 PetriNetUnfolderBase]: 93/241 cut-off events. [2024-11-28 04:53:50,183 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2024-11-28 04:53:50,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 633 conditions, 241 events. 93/241 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 850 event pairs, 25 based on Foata normal form. 10/251 useless extension candidates. Maximal degree in co-relation 183. Up to 101 conditions per place. [2024-11-28 04:53:50,186 INFO L140 encePairwiseOnDemand]: 21/24 looper letters, 36 selfloop transitions, 3 changer transitions 0/43 dead transitions. [2024-11-28 04:53:50,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 43 transitions, 224 flow [2024-11-28 04:53:50,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:53:50,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:53:50,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 61 transitions. [2024-11-28 04:53:50,188 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6354166666666666 [2024-11-28 04:53:50,188 INFO L175 Difference]: Start difference. First operand has 26 places, 22 transitions, 70 flow. Second operand 4 states and 61 transitions. [2024-11-28 04:53:50,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 43 transitions, 224 flow [2024-11-28 04:53:50,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 43 transitions, 212 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 04:53:50,190 INFO L231 Difference]: Finished difference. Result has 29 places, 23 transitions, 82 flow [2024-11-28 04:53:50,190 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=82, PETRI_PLACES=29, PETRI_TRANSITIONS=23} [2024-11-28 04:53:50,191 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 7 predicate places. [2024-11-28 04:53:50,191 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 23 transitions, 82 flow [2024-11-28 04:53:50,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:53:50,191 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:53:50,192 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:53:50,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 04:53:50,192 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 04:53:50,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:53:50,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1846728625, now seen corresponding path program 3 times [2024-11-28 04:53:50,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:53:50,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71755248] [2024-11-28 04:53:50,193 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:53:50,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:53:50,209 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-28 04:53:50,209 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:53:50,262 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 04:53:50,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:53:50,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71755248] [2024-11-28 04:53:50,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71755248] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:53:50,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:53:50,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:53:50,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132885188] [2024-11-28 04:53:50,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:53:50,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:53:50,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:53:50,265 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:53:50,265 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:53:50,273 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2024-11-28 04:53:50,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 23 transitions, 82 flow. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:53:50,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:53:50,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2024-11-28 04:53:50,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:53:50,439 INFO L124 PetriNetUnfolderBase]: 125/328 cut-off events. [2024-11-28 04:53:50,439 INFO L125 PetriNetUnfolderBase]: For 310/310 co-relation queries the response was YES. [2024-11-28 04:53:50,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 896 conditions, 328 events. 125/328 cut-off events. For 310/310 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1298 event pairs, 35 based on Foata normal form. 14/342 useless extension candidates. Maximal degree in co-relation 269. Up to 137 conditions per place. [2024-11-28 04:53:50,446 INFO L140 encePairwiseOnDemand]: 21/24 looper letters, 39 selfloop transitions, 3 changer transitions 0/46 dead transitions. [2024-11-28 04:53:50,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 46 transitions, 266 flow [2024-11-28 04:53:50,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:53:50,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:53:50,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 61 transitions. [2024-11-28 04:53:50,449 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6354166666666666 [2024-11-28 04:53:50,449 INFO L175 Difference]: Start difference. First operand has 29 places, 23 transitions, 82 flow. Second operand 4 states and 61 transitions. [2024-11-28 04:53:50,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 46 transitions, 266 flow [2024-11-28 04:53:50,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 46 transitions, 248 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-28 04:53:50,455 INFO L231 Difference]: Finished difference. Result has 31 places, 24 transitions, 92 flow [2024-11-28 04:53:50,455 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=92, PETRI_PLACES=31, PETRI_TRANSITIONS=24} [2024-11-28 04:53:50,456 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 9 predicate places. [2024-11-28 04:53:50,459 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 24 transitions, 92 flow [2024-11-28 04:53:50,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:53:50,459 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:53:50,459 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:53:50,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 04:53:50,459 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 04:53:50,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:53:50,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1669869906, now seen corresponding path program 4 times [2024-11-28 04:53:50,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:53:50,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139928926] [2024-11-28 04:53:50,460 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:53:50,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:53:50,514 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:53:50,514 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:53:50,663 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 04:53:50,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:53:50,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139928926] [2024-11-28 04:53:50,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139928926] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:53:50,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238525728] [2024-11-28 04:53:50,663 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:53:50,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:53:50,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234a091a-9221-417f-8cab-b4dd099c16ad/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:53:50,668 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234a091a-9221-417f-8cab-b4dd099c16ad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:53:50,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234a091a-9221-417f-8cab-b4dd099c16ad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:53:50,787 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:53:50,787 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:53:50,789 INFO L256 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 04:53:50,796 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:53:50,921 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:53:50,922 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:53:51,028 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:53:51,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238525728] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:53:51,028 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:53:51,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-28 04:53:51,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213572853] [2024-11-28 04:53:51,029 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:53:51,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 04:53:51,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:53:51,033 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 04:53:51,033 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:53:51,052 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-28 04:53:51,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 92 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:53:51,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:53:51,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-28 04:53:51,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:53:51,886 INFO L124 PetriNetUnfolderBase]: 403/942 cut-off events. [2024-11-28 04:53:51,886 INFO L125 PetriNetUnfolderBase]: For 919/919 co-relation queries the response was YES. [2024-11-28 04:53:51,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2635 conditions, 942 events. 403/942 cut-off events. For 919/919 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 4084 event pairs, 8 based on Foata normal form. 105/1047 useless extension candidates. Maximal degree in co-relation 620. Up to 165 conditions per place. [2024-11-28 04:53:51,895 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 202 selfloop transitions, 60 changer transitions 0/265 dead transitions. [2024-11-28 04:53:51,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 265 transitions, 1436 flow [2024-11-28 04:53:51,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-28 04:53:51,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-11-28 04:53:51,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 430 transitions. [2024-11-28 04:53:51,900 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.617816091954023 [2024-11-28 04:53:51,900 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 92 flow. Second operand 29 states and 430 transitions. [2024-11-28 04:53:51,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 265 transitions, 1436 flow [2024-11-28 04:53:51,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 265 transitions, 1412 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-28 04:53:51,909 INFO L231 Difference]: Finished difference. Result has 79 places, 77 transitions, 636 flow [2024-11-28 04:53:51,910 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=636, PETRI_PLACES=79, PETRI_TRANSITIONS=77} [2024-11-28 04:53:51,910 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 57 predicate places. [2024-11-28 04:53:51,910 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 77 transitions, 636 flow [2024-11-28 04:53:51,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:53:51,911 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:53:51,911 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:53:51,921 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234a091a-9221-417f-8cab-b4dd099c16ad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 04:53:52,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234a091a-9221-417f-8cab-b4dd099c16ad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-28 04:53:52,116 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 04:53:52,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:53:52,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1849992096, now seen corresponding path program 5 times [2024-11-28 04:53:52,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:53:52,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387536378] [2024-11-28 04:53:52,117 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:53:52,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:53:52,177 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-11-28 04:53:52,177 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:53:52,361 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-28 04:53:52,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:53:52,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387536378] [2024-11-28 04:53:52,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387536378] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:53:52,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670684845] [2024-11-28 04:53:52,362 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:53:52,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:53:52,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234a091a-9221-417f-8cab-b4dd099c16ad/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:53:52,366 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234a091a-9221-417f-8cab-b4dd099c16ad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:53:52,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234a091a-9221-417f-8cab-b4dd099c16ad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:53:52,538 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-11-28 04:53:52,538 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:53:52,540 INFO L256 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 04:53:52,547 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:53:52,739 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-28 04:53:52,739 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:53:52,982 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-28 04:53:52,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670684845] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:53:52,982 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:53:52,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9] total 20 [2024-11-28 04:53:52,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389802942] [2024-11-28 04:53:52,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:53:52,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 04:53:52,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:53:52,984 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 04:53:52,984 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=246, Unknown=0, NotChecked=0, Total=380 [2024-11-28 04:53:53,003 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-28 04:53:53,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 77 transitions, 636 flow. Second operand has 20 states, 20 states have (on average 10.05) internal successors, (201), 20 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:53:53,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:53:53,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-28 04:53:53,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:53:55,567 INFO L124 PetriNetUnfolderBase]: 1047/2406 cut-off events. [2024-11-28 04:53:55,567 INFO L125 PetriNetUnfolderBase]: For 39770/39770 co-relation queries the response was YES. [2024-11-28 04:53:55,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10728 conditions, 2406 events. 1047/2406 cut-off events. For 39770/39770 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 11554 event pairs, 12 based on Foata normal form. 249/2655 useless extension candidates. Maximal degree in co-relation 9089. Up to 438 conditions per place. [2024-11-28 04:53:55,595 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 544 selfloop transitions, 187 changer transitions 0/734 dead transitions. [2024-11-28 04:53:55,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 734 transitions, 5828 flow [2024-11-28 04:53:55,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2024-11-28 04:53:55,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2024-11-28 04:53:55,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 1134 transitions. [2024-11-28 04:53:55,603 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6217105263157895 [2024-11-28 04:53:55,605 INFO L175 Difference]: Start difference. First operand has 79 places, 77 transitions, 636 flow. Second operand 76 states and 1134 transitions. [2024-11-28 04:53:55,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 734 transitions, 5828 flow [2024-11-28 04:53:55,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 734 transitions, 5384 flow, removed 166 selfloop flow, removed 4 redundant places. [2024-11-28 04:53:55,685 INFO L231 Difference]: Finished difference. Result has 201 places, 208 transitions, 2362 flow [2024-11-28 04:53:55,686 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=76, PETRI_FLOW=2362, PETRI_PLACES=201, PETRI_TRANSITIONS=208} [2024-11-28 04:53:55,687 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 179 predicate places. [2024-11-28 04:53:55,687 INFO L471 AbstractCegarLoop]: Abstraction has has 201 places, 208 transitions, 2362 flow [2024-11-28 04:53:55,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 10.05) internal successors, (201), 20 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:53:55,688 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:53:55,688 INFO L206 CegarLoopForPetriNet]: trace histogram [14, 14, 14, 14, 14, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:53:55,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234a091a-9221-417f-8cab-b4dd099c16ad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 04:53:55,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234a091a-9221-417f-8cab-b4dd099c16ad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:53:55,890 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 04:53:55,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:53:55,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1140349342, now seen corresponding path program 6 times [2024-11-28 04:53:55,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:53:55,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683100953] [2024-11-28 04:53:55,891 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:53:55,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:53:55,964 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-11-28 04:53:55,964 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:53:56,255 INFO L134 CoverageAnalysis]: Checked inductivity of 503 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2024-11-28 04:53:56,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:53:56,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683100953] [2024-11-28 04:53:56,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683100953] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:53:56,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809953411] [2024-11-28 04:53:56,255 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:53:56,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:53:56,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234a091a-9221-417f-8cab-b4dd099c16ad/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:53:56,258 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234a091a-9221-417f-8cab-b4dd099c16ad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:53:56,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234a091a-9221-417f-8cab-b4dd099c16ad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:53:56,456 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-11-28 04:53:56,456 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:53:56,458 INFO L256 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 04:53:56,461 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:53:56,643 INFO L134 CoverageAnalysis]: Checked inductivity of 503 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2024-11-28 04:53:56,643 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:53:56,873 INFO L134 CoverageAnalysis]: Checked inductivity of 503 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2024-11-28 04:53:56,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809953411] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:53:56,874 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:53:56,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-28 04:53:56,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478952095] [2024-11-28 04:53:56,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:53:56,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 04:53:56,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:53:56,875 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 04:53:56,876 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:53:56,888 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-28 04:53:56,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 208 transitions, 2362 flow. Second operand has 13 states, 13 states have (on average 10.0) internal successors, (130), 13 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:53:56,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:53:56,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-28 04:53:56,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:53:58,745 INFO L124 PetriNetUnfolderBase]: 2116/4986 cut-off events. [2024-11-28 04:53:58,745 INFO L125 PetriNetUnfolderBase]: For 274659/274693 co-relation queries the response was YES. [2024-11-28 04:53:58,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31554 conditions, 4986 events. 2116/4986 cut-off events. For 274659/274693 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 29069 event pairs, 286 based on Foata normal form. 448/5318 useless extension candidates. Maximal degree in co-relation 26426. Up to 795 conditions per place. [2024-11-28 04:53:58,903 INFO L140 encePairwiseOnDemand]: 20/24 looper letters, 254 selfloop transitions, 114 changer transitions 0/380 dead transitions. [2024-11-28 04:53:58,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 380 transitions, 5528 flow [2024-11-28 04:53:58,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 04:53:58,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-28 04:53:58,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 189 transitions. [2024-11-28 04:53:58,907 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.65625 [2024-11-28 04:53:58,907 INFO L175 Difference]: Start difference. First operand has 201 places, 208 transitions, 2362 flow. Second operand 12 states and 189 transitions. [2024-11-28 04:53:58,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 380 transitions, 5528 flow [2024-11-28 04:53:59,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 380 transitions, 5128 flow, removed 125 selfloop flow, removed 20 redundant places. [2024-11-28 04:53:59,259 INFO L231 Difference]: Finished difference. Result has 199 places, 214 transitions, 2568 flow [2024-11-28 04:53:59,260 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=2022, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2568, PETRI_PLACES=199, PETRI_TRANSITIONS=214} [2024-11-28 04:53:59,263 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 177 predicate places. [2024-11-28 04:53:59,265 INFO L471 AbstractCegarLoop]: Abstraction has has 199 places, 214 transitions, 2568 flow [2024-11-28 04:53:59,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.0) internal successors, (130), 13 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:53:59,265 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:53:59,265 INFO L206 CegarLoopForPetriNet]: trace histogram [14, 14, 14, 14, 14, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:53:59,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234a091a-9221-417f-8cab-b4dd099c16ad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 04:53:59,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234a091a-9221-417f-8cab-b4dd099c16ad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-28 04:53:59,466 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 04:53:59,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:53:59,468 INFO L85 PathProgramCache]: Analyzing trace with hash 580261704, now seen corresponding path program 7 times [2024-11-28 04:53:59,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:53:59,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117070850] [2024-11-28 04:53:59,469 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:53:59,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:53:59,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:54:00,127 INFO L134 CoverageAnalysis]: Checked inductivity of 531 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2024-11-28 04:54:00,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:54:00,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117070850] [2024-11-28 04:54:00,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117070850] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:54:00,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822469626] [2024-11-28 04:54:00,128 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:54:00,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:54:00,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234a091a-9221-417f-8cab-b4dd099c16ad/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:54:00,130 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234a091a-9221-417f-8cab-b4dd099c16ad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:54:00,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234a091a-9221-417f-8cab-b4dd099c16ad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:54:00,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:54:00,357 INFO L256 TraceCheckSpWp]: Trace formula consists of 562 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 04:54:00,367 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:54:00,594 INFO L134 CoverageAnalysis]: Checked inductivity of 531 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2024-11-28 04:54:00,594 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:54:01,119 INFO L134 CoverageAnalysis]: Checked inductivity of 531 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2024-11-28 04:54:01,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1822469626] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:54:01,119 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:54:01,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 23 [2024-11-28 04:54:01,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168861163] [2024-11-28 04:54:01,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:54:01,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-28 04:54:01,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:54:01,122 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-28 04:54:01,122 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2024-11-28 04:54:01,143 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-28 04:54:01,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 214 transitions, 2568 flow. Second operand has 23 states, 23 states have (on average 10.391304347826088) internal successors, (239), 23 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:54:01,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:54:01,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-28 04:54:01,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:54:04,997 INFO L124 PetriNetUnfolderBase]: 4065/9465 cut-off events. [2024-11-28 04:54:04,998 INFO L125 PetriNetUnfolderBase]: For 675297/675327 co-relation queries the response was YES. [2024-11-28 04:54:05,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68725 conditions, 9465 events. 4065/9465 cut-off events. For 675297/675327 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 58965 event pairs, 426 based on Foata normal form. 760/9969 useless extension candidates. Maximal degree in co-relation 57838. Up to 1545 conditions per place. [2024-11-28 04:54:05,203 INFO L140 encePairwiseOnDemand]: 20/24 looper letters, 484 selfloop transitions, 124 changer transitions 0/620 dead transitions. [2024-11-28 04:54:05,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 620 transitions, 9140 flow [2024-11-28 04:54:05,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-28 04:54:05,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-28 04:54:05,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 353 transitions. [2024-11-28 04:54:05,205 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6685606060606061 [2024-11-28 04:54:05,206 INFO L175 Difference]: Start difference. First operand has 199 places, 214 transitions, 2568 flow. Second operand 22 states and 353 transitions. [2024-11-28 04:54:05,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 620 transitions, 9140 flow [2024-11-28 04:54:05,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 620 transitions, 8644 flow, removed 160 selfloop flow, removed 4 redundant places. [2024-11-28 04:54:05,913 INFO L231 Difference]: Finished difference. Result has 227 places, 225 transitions, 2934 flow [2024-11-28 04:54:05,913 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=2272, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2934, PETRI_PLACES=227, PETRI_TRANSITIONS=225} [2024-11-28 04:54:05,914 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 205 predicate places. [2024-11-28 04:54:05,914 INFO L471 AbstractCegarLoop]: Abstraction has has 227 places, 225 transitions, 2934 flow [2024-11-28 04:54:05,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 10.391304347826088) internal successors, (239), 23 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:54:05,914 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:54:05,914 INFO L206 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 20, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:54:05,924 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234a091a-9221-417f-8cab-b4dd099c16ad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 04:54:06,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234a091a-9221-417f-8cab-b4dd099c16ad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:54:06,115 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 04:54:06,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:54:06,116 INFO L85 PathProgramCache]: Analyzing trace with hash 34353850, now seen corresponding path program 8 times [2024-11-28 04:54:06,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:54:06,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540124232] [2024-11-28 04:54:06,116 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:54:06,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:54:06,185 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:54:06,185 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:54:07,056 INFO L134 CoverageAnalysis]: Checked inductivity of 1439 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2024-11-28 04:54:07,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:54:07,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540124232] [2024-11-28 04:54:07,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540124232] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:54:07,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362476289] [2024-11-28 04:54:07,057 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:54:07,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:54:07,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234a091a-9221-417f-8cab-b4dd099c16ad/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:54:07,063 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234a091a-9221-417f-8cab-b4dd099c16ad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:54:07,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234a091a-9221-417f-8cab-b4dd099c16ad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 04:54:07,331 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:54:07,332 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:54:07,339 INFO L256 TraceCheckSpWp]: Trace formula consists of 752 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 04:54:07,346 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:54:07,504 INFO L134 CoverageAnalysis]: Checked inductivity of 1439 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2024-11-28 04:54:07,505 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:54:07,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1439 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2024-11-28 04:54:07,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [362476289] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:54:07,900 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:54:07,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2024-11-28 04:54:07,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543519747] [2024-11-28 04:54:07,900 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:54:07,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-28 04:54:07,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:54:07,902 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-28 04:54:07,902 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2024-11-28 04:54:07,936 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-28 04:54:07,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 225 transitions, 2934 flow. Second operand has 23 states, 23 states have (on average 10.0) internal successors, (230), 23 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:54:07,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:54:07,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-28 04:54:07,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:54:12,553 INFO L124 PetriNetUnfolderBase]: 5254/12337 cut-off events. [2024-11-28 04:54:12,554 INFO L125 PetriNetUnfolderBase]: For 1263735/1263735 co-relation queries the response was YES. [2024-11-28 04:54:12,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80699 conditions, 12337 events. 5254/12337 cut-off events. For 1263735/1263735 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 81646 event pairs, 227 based on Foata normal form. 498/12835 useless extension candidates. Maximal degree in co-relation 74077. Up to 2361 conditions per place. [2024-11-28 04:54:12,747 INFO L140 encePairwiseOnDemand]: 20/24 looper letters, 720 selfloop transitions, 110 changer transitions 0/835 dead transitions. [2024-11-28 04:54:12,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 835 transitions, 20202 flow [2024-11-28 04:54:12,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-28 04:54:12,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-28 04:54:12,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 349 transitions. [2024-11-28 04:54:12,749 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6609848484848485 [2024-11-28 04:54:12,750 INFO L175 Difference]: Start difference. First operand has 227 places, 225 transitions, 2934 flow. Second operand 22 states and 349 transitions. [2024-11-28 04:54:12,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 835 transitions, 20202 flow [2024-11-28 04:54:13,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 835 transitions, 19714 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-11-28 04:54:13,818 INFO L231 Difference]: Finished difference. Result has 246 places, 260 transitions, 3406 flow [2024-11-28 04:54:13,818 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=2734, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3406, PETRI_PLACES=246, PETRI_TRANSITIONS=260} [2024-11-28 04:54:13,819 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 224 predicate places. [2024-11-28 04:54:13,819 INFO L471 AbstractCegarLoop]: Abstraction has has 246 places, 260 transitions, 3406 flow [2024-11-28 04:54:13,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 10.0) internal successors, (230), 23 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:54:13,819 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:54:13,820 INFO L206 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:54:13,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234a091a-9221-417f-8cab-b4dd099c16ad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 04:54:14,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234a091a-9221-417f-8cab-b4dd099c16ad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-28 04:54:14,024 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 04:54:14,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:54:14,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1695883002, now seen corresponding path program 9 times [2024-11-28 04:54:14,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:54:14,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277455283] [2024-11-28 04:54:14,026 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:54:14,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:54:14,436 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 20 check-sat command(s) [2024-11-28 04:54:14,436 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:54:18,688 INFO L134 CoverageAnalysis]: Checked inductivity of 1813 backedges. 0 proven. 1813 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:54:18,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:54:18,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277455283] [2024-11-28 04:54:18,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277455283] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:54:18,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533406108] [2024-11-28 04:54:18,689 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:54:18,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:54:18,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234a091a-9221-417f-8cab-b4dd099c16ad/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:54:18,691 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234a091a-9221-417f-8cab-b4dd099c16ad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:54:18,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234a091a-9221-417f-8cab-b4dd099c16ad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 04:54:19,690 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 20 check-sat command(s) [2024-11-28 04:54:19,690 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:54:19,697 INFO L256 TraceCheckSpWp]: Trace formula consists of 878 conjuncts, 128 conjuncts are in the unsatisfiable core [2024-11-28 04:54:19,708 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:54:20,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1813 backedges. 0 proven. 1813 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:54:20,197 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:54:20,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1813 backedges. 0 proven. 1813 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:54:20,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533406108] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:54:20,635 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:54:20,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 44 [2024-11-28 04:54:20,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814575700] [2024-11-28 04:54:20,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:54:20,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-28 04:54:20,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:54:20,638 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-28 04:54:20,639 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1892, Unknown=0, NotChecked=0, Total=1980 [2024-11-28 04:54:20,657 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-28 04:54:20,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 260 transitions, 3406 flow. Second operand has 45 states, 45 states have (on average 7.8) internal successors, (351), 45 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:54:20,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:54:20,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-28 04:54:20,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:54:38,942 INFO L124 PetriNetUnfolderBase]: 9911/24755 cut-off events. [2024-11-28 04:54:38,942 INFO L125 PetriNetUnfolderBase]: For 3441551/3441551 co-relation queries the response was YES. [2024-11-28 04:54:39,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254973 conditions, 24755 events. 9911/24755 cut-off events. For 3441551/3441551 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 195681 event pairs, 1311 based on Foata normal form. 1/24681 useless extension candidates. Maximal degree in co-relation 242389. Up to 5849 conditions per place. [2024-11-28 04:54:39,456 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 1974 selfloop transitions, 83 changer transitions 2/2078 dead transitions. [2024-11-28 04:54:39,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 2078 transitions, 41715 flow [2024-11-28 04:54:39,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-28 04:54:39,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2024-11-28 04:54:39,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 644 transitions. [2024-11-28 04:54:39,459 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6098484848484849 [2024-11-28 04:54:39,459 INFO L175 Difference]: Start difference. First operand has 246 places, 260 transitions, 3406 flow. Second operand 44 states and 644 transitions. [2024-11-28 04:54:39,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 2078 transitions, 41715 flow [2024-11-28 04:54:47,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 2078 transitions, 40662 flow, removed 0 selfloop flow, removed 13 redundant places. [2024-11-28 04:54:47,823 INFO L231 Difference]: Finished difference. Result has 278 places, 342 transitions, 3618 flow [2024-11-28 04:54:47,823 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=3276, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=3618, PETRI_PLACES=278, PETRI_TRANSITIONS=342} [2024-11-28 04:54:47,824 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 256 predicate places. [2024-11-28 04:54:47,824 INFO L471 AbstractCegarLoop]: Abstraction has has 278 places, 342 transitions, 3618 flow [2024-11-28 04:54:47,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 7.8) internal successors, (351), 45 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:54:47,824 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:54:47,824 INFO L206 CegarLoopForPetriNet]: trace histogram [21, 21, 21, 21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:54:47,833 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234a091a-9221-417f-8cab-b4dd099c16ad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 04:54:48,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234a091a-9221-417f-8cab-b4dd099c16ad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-28 04:54:48,028 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 04:54:48,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:54:48,030 INFO L85 PathProgramCache]: Analyzing trace with hash -756834993, now seen corresponding path program 10 times [2024-11-28 04:54:48,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:54:48,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870463174] [2024-11-28 04:54:48,030 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:54:48,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:54:48,151 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:54:48,155 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:54:49,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1920 backedges. 950 proven. 0 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2024-11-28 04:54:49,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:54:49,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870463174] [2024-11-28 04:54:49,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870463174] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:54:49,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:54:49,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2024-11-28 04:54:49,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075339375] [2024-11-28 04:54:49,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:54:49,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-28 04:54:49,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:54:49,245 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-28 04:54:49,245 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2024-11-28 04:54:49,272 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-28 04:54:49,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 342 transitions, 3618 flow. Second operand has 23 states, 23 states have (on average 10.08695652173913) internal successors, (232), 23 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:54:49,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:54:49,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-28 04:54:49,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:54:59,711 INFO L124 PetriNetUnfolderBase]: 9149/21017 cut-off events. [2024-11-28 04:54:59,712 INFO L125 PetriNetUnfolderBase]: For 1642429/1642429 co-relation queries the response was YES. [2024-11-28 04:55:00,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179008 conditions, 21017 events. 9149/21017 cut-off events. For 1642429/1642429 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 157813 event pairs, 74 based on Foata normal form. 89/21106 useless extension candidates. Maximal degree in co-relation 178897. Up to 5184 conditions per place. [2024-11-28 04:55:00,115 INFO L140 encePairwiseOnDemand]: 21/24 looper letters, 2067 selfloop transitions, 105 changer transitions 0/2177 dead transitions. [2024-11-28 04:55:00,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 2177 transitions, 28774 flow [2024-11-28 04:55:00,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-28 04:55:00,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-28 04:55:00,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 354 transitions. [2024-11-28 04:55:00,119 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6413043478260869 [2024-11-28 04:55:00,119 INFO L175 Difference]: Start difference. First operand has 278 places, 342 transitions, 3618 flow. Second operand 23 states and 354 transitions. [2024-11-28 04:55:00,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 2177 transitions, 28774 flow [2024-11-28 04:55:03,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 2177 transitions, 28762 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-28 04:55:03,474 INFO L231 Difference]: Finished difference. Result has 297 places, 337 transitions, 3746 flow [2024-11-28 04:55:03,474 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=3536, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=3746, PETRI_PLACES=297, PETRI_TRANSITIONS=337} [2024-11-28 04:55:03,475 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 275 predicate places. [2024-11-28 04:55:03,475 INFO L471 AbstractCegarLoop]: Abstraction has has 297 places, 337 transitions, 3746 flow [2024-11-28 04:55:03,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 10.08695652173913) internal successors, (232), 23 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:55:03,476 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:55:03,476 INFO L206 CegarLoopForPetriNet]: trace histogram [21, 21, 21, 21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:55:03,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 04:55:03,476 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 04:55:03,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:55:03,478 INFO L85 PathProgramCache]: Analyzing trace with hash 343668188, now seen corresponding path program 11 times [2024-11-28 04:55:03,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:55:03,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101355375] [2024-11-28 04:55:03,479 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:55:03,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:55:03,619 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2024-11-28 04:55:03,619 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:55:04,872 INFO L134 CoverageAnalysis]: Checked inductivity of 2041 backedges. 1071 proven. 0 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2024-11-28 04:55:04,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:55:04,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101355375] [2024-11-28 04:55:04,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101355375] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:55:04,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:55:04,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2024-11-28 04:55:04,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004311051] [2024-11-28 04:55:04,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:55:04,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-28 04:55:04,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:55:04,874 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-28 04:55:04,875 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2024-11-28 04:55:04,875 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-28 04:55:04,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 337 transitions, 3746 flow. Second operand has 23 states, 23 states have (on average 10.08695652173913) internal successors, (232), 23 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:55:04,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:55:04,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-28 04:55:04,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:55:09,646 INFO L124 PetriNetUnfolderBase]: 5470/12854 cut-off events. [2024-11-28 04:55:09,646 INFO L125 PetriNetUnfolderBase]: For 504601/504823 co-relation queries the response was YES. [2024-11-28 04:55:09,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85213 conditions, 12854 events. 5470/12854 cut-off events. For 504601/504823 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 85940 event pairs, 341 based on Foata normal form. 305/12883 useless extension candidates. Maximal degree in co-relation 84524. Up to 2163 conditions per place. [2024-11-28 04:55:09,872 INFO L140 encePairwiseOnDemand]: 21/24 looper letters, 0 selfloop transitions, 0 changer transitions 1605/1605 dead transitions. [2024-11-28 04:55:09,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 1605 transitions, 17565 flow [2024-11-28 04:55:09,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-28 04:55:09,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-28 04:55:09,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 353 transitions. [2024-11-28 04:55:09,875 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6394927536231884 [2024-11-28 04:55:09,875 INFO L175 Difference]: Start difference. First operand has 297 places, 337 transitions, 3746 flow. Second operand 23 states and 353 transitions. [2024-11-28 04:55:09,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 1605 transitions, 17565 flow [2024-11-28 04:55:11,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 1605 transitions, 16635 flow, removed 0 selfloop flow, removed 24 redundant places. [2024-11-28 04:55:11,101 INFO L231 Difference]: Finished difference. Result has 292 places, 0 transitions, 0 flow [2024-11-28 04:55:11,102 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=3478, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=0, PETRI_PLACES=292, PETRI_TRANSITIONS=0} [2024-11-28 04:55:11,102 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 270 predicate places. [2024-11-28 04:55:11,102 INFO L471 AbstractCegarLoop]: Abstraction has has 292 places, 0 transitions, 0 flow [2024-11-28 04:55:11,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 10.08695652173913) internal successors, (232), 23 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:55:11,105 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2024-11-28 04:55:11,105 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2024-11-28 04:55:11,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 04:55:11,106 INFO L422 BasicCegarLoop]: Path program histogram: [11, 1, 1] [2024-11-28 04:55:11,109 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-28 04:55:11,109 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 04:55:11,114 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:55:11 BasicIcfg [2024-11-28 04:55:11,114 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 04:55:11,115 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 04:55:11,115 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 04:55:11,115 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 04:55:11,116 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:53:48" (3/4) ... [2024-11-28 04:55:11,117 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-11-28 04:55:11,120 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread_function_mutex [2024-11-28 04:55:11,124 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 44 nodes and edges [2024-11-28 04:55:11,125 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-28 04:55:11,125 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-11-28 04:55:11,125 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-28 04:55:11,230 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234a091a-9221-417f-8cab-b4dd099c16ad/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-28 04:55:11,230 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234a091a-9221-417f-8cab-b4dd099c16ad/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-28 04:55:11,231 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 04:55:11,232 INFO L158 Benchmark]: Toolchain (without parser) took 84538.12ms. Allocated memory was 117.4MB in the beginning and 7.2GB in the end (delta: 7.1GB). Free memory was 90.6MB in the beginning and 6.1GB in the end (delta: -6.0GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2024-11-28 04:55:11,232 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 117.4MB. Free memory is still 72.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:55:11,234 INFO L158 Benchmark]: CACSL2BoogieTranslator took 948.17ms. Allocated memory is still 117.4MB. Free memory was 90.3MB in the beginning and 52.9MB in the end (delta: 37.5MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2024-11-28 04:55:11,235 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.62ms. Allocated memory is still 117.4MB. Free memory was 52.9MB in the beginning and 50.6MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:55:11,235 INFO L158 Benchmark]: Boogie Preprocessor took 51.87ms. Allocated memory is still 117.4MB. Free memory was 50.6MB in the beginning and 48.9MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:55:11,236 INFO L158 Benchmark]: RCFGBuilder took 658.97ms. Allocated memory is still 117.4MB. Free memory was 48.9MB in the beginning and 81.6MB in the end (delta: -32.6MB). Peak memory consumption was 13.2MB. Max. memory is 16.1GB. [2024-11-28 04:55:11,237 INFO L158 Benchmark]: TraceAbstraction took 82686.94ms. Allocated memory was 117.4MB in the beginning and 7.2GB in the end (delta: 7.1GB). Free memory was 81.0MB in the beginning and 6.1GB in the end (delta: -6.0GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. [2024-11-28 04:55:11,237 INFO L158 Benchmark]: Witness Printer took 115.79ms. Allocated memory is still 7.2GB. Free memory was 6.1GB in the beginning and 6.1GB in the end (delta: 4.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:55:11,239 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 117.4MB. Free memory is still 72.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 948.17ms. Allocated memory is still 117.4MB. Free memory was 90.3MB in the beginning and 52.9MB in the end (delta: 37.5MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.62ms. Allocated memory is still 117.4MB. Free memory was 52.9MB in the beginning and 50.6MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 51.87ms. Allocated memory is still 117.4MB. Free memory was 50.6MB in the beginning and 48.9MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 658.97ms. Allocated memory is still 117.4MB. Free memory was 48.9MB in the beginning and 81.6MB in the end (delta: -32.6MB). Peak memory consumption was 13.2MB. Max. memory is 16.1GB. * TraceAbstraction took 82686.94ms. Allocated memory was 117.4MB in the beginning and 7.2GB in the end (delta: 7.1GB). Free memory was 81.0MB in the beginning and 6.1GB in the end (delta: -6.0GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. * Witness Printer took 115.79ms. Allocated memory is still 7.2GB. Free memory was 6.1GB in the beginning and 6.1GB in the end (delta: 4.2MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 13]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 30 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 82.5s, OverallIterations: 13, TraceHistogramMax: 21, PathProgramHistogramMax: 11, EmptinessCheckTime: 0.0s, AutomataDifference: 65.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2347 SdHoareTripleChecker+Valid, 11.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2329 mSDsluCounter, 478 SdHoareTripleChecker+Invalid, 9.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 478 mSDsCounter, 53 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 22425 IncrementalHoareTripleChecker+Invalid, 22478 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 53 mSolverCounterUnsat, 0 mSDtfsCounter, 22425 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1701 GetRequests, 1442 SyntacticMatches, 12 SemanticMatches, 247 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2036 ImplicationChecksByTransitivity, 4.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3746occurred in iteration=12, InterpolantAutomatonStates: 268, 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: 0.3s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 12.7s InterpolantComputationTime, 1930 NumberOfCodeBlocks, 1860 NumberOfCodeBlocksAsserted, 111 NumberOfCheckSat, 2610 ConstructedInterpolants, 0 QuantifiedInterpolants, 6508 SizeOfPredicates, 22 NumberOfNonLiveVariables, 2933 ConjunctsInSsa, 174 ConjunctsInUnsatCore, 25 InterpolantComputations, 7 PerfectInterpolantSequences, 9303/17158 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, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-28 04:55:11,259 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234a091a-9221-417f-8cab-b4dd099c16ad/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE