/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked TOGETHER -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_40_barrier_vf_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 15:53:49,021 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 15:53:49,060 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 15:53:49,062 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 15:53:49,063 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 15:53:49,063 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 15:53:49,063 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 15:53:49,090 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 15:53:49,090 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 15:53:49,093 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 15:53:49,093 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 15:53:49,093 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 15:53:49,094 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 15:53:49,095 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 15:53:49,095 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 15:53:49,095 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 15:53:49,095 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 15:53:49,095 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 15:53:49,096 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 15:53:49,096 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 15:53:49,096 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 15:53:49,096 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 15:53:49,096 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 15:53:49,096 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 15:53:49,097 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 15:53:49,097 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 15:53:49,097 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 15:53:49,098 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 15:53:49,098 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 15:53:49,098 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 15:53:49,099 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 15:53:49,099 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 15:53:49,099 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 15:53:49,099 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 15:53:49,099 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 15:53:49,099 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 15:53:49,099 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 15:53:49,099 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 15:53:49,100 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 15:53:49,100 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 15:53:49,100 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 15:53:49,100 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 15:53:49,257 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 15:53:49,270 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 15:53:49,272 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 15:53:49,272 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 15:53:49,273 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 15:53:49,277 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_40_barrier_vf_bound2.i [2023-08-03 15:53:50,209 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 15:53:50,395 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 15:53:50,396 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_40_barrier_vf_bound2.i [2023-08-03 15:53:50,405 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45729cd3f/d285b5d0002044c39cc9b5ba96a4704a/FLAG1db86eed6 [2023-08-03 15:53:50,413 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45729cd3f/d285b5d0002044c39cc9b5ba96a4704a [2023-08-03 15:53:50,415 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 15:53:50,416 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 15:53:50,416 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 15:53:50,417 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 15:53:50,419 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 15:53:50,419 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 03:53:50" (1/1) ... [2023-08-03 15:53:50,420 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34d4aef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:53:50, skipping insertion in model container [2023-08-03 15:53:50,420 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 03:53:50" (1/1) ... [2023-08-03 15:53:50,457 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 15:53:50,571 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-03 15:53:50,673 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_40_barrier_vf_bound2.i[31163,31176] [2023-08-03 15:53:50,678 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 15:53:50,684 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 15:53:50,701 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-03 15:53:50,710 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [269] [2023-08-03 15:53:50,712 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [269] [2023-08-03 15:53:50,724 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_40_barrier_vf_bound2.i[31163,31176] [2023-08-03 15:53:50,726 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 15:53:50,749 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 15:53:50,749 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 15:53:50,750 WARN L667 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 15:53:50,754 INFO L206 MainTranslator]: Completed translation [2023-08-03 15:53:50,754 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:53:50 WrapperNode [2023-08-03 15:53:50,754 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 15:53:50,755 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 15:53:50,756 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 15:53:50,756 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 15:53:50,760 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:53:50" (1/1) ... [2023-08-03 15:53:50,780 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:53:50" (1/1) ... [2023-08-03 15:53:50,803 INFO L138 Inliner]: procedures = 174, calls = 25, calls flagged for inlining = 10, calls inlined = 12, statements flattened = 82 [2023-08-03 15:53:50,804 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 15:53:50,804 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 15:53:50,804 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 15:53:50,804 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 15:53:50,809 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:53:50" (1/1) ... [2023-08-03 15:53:50,809 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:53:50" (1/1) ... [2023-08-03 15:53:50,815 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:53:50" (1/1) ... [2023-08-03 15:53:50,815 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:53:50" (1/1) ... [2023-08-03 15:53:50,826 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:53:50" (1/1) ... [2023-08-03 15:53:50,828 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:53:50" (1/1) ... [2023-08-03 15:53:50,829 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:53:50" (1/1) ... [2023-08-03 15:53:50,830 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:53:50" (1/1) ... [2023-08-03 15:53:50,831 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 15:53:50,832 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 15:53:50,832 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 15:53:50,832 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 15:53:50,833 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:53:50" (1/1) ... [2023-08-03 15:53:50,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 15:53:50,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:53:50,859 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-03 15:53:50,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-03 15:53:50,887 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-03 15:53:50,888 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-03 15:53:50,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 15:53:50,889 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 15:53:50,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 15:53:50,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 15:53:50,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 15:53:50,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 15:53:50,889 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 15:53:50,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 15:53:50,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 15:53:50,891 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 15:53:50,966 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 15:53:50,967 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 15:53:51,070 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 15:53:51,113 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 15:53:51,113 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-03 15:53:51,114 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 03:53:51 BoogieIcfgContainer [2023-08-03 15:53:51,115 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 15:53:51,116 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 15:53:51,116 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 15:53:51,118 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 15:53:51,118 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 03:53:50" (1/3) ... [2023-08-03 15:53:51,118 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41f9e0c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 03:53:51, skipping insertion in model container [2023-08-03 15:53:51,119 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:53:50" (2/3) ... [2023-08-03 15:53:51,119 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41f9e0c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 03:53:51, skipping insertion in model container [2023-08-03 15:53:51,119 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 03:53:51" (3/3) ... [2023-08-03 15:53:51,120 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-ext_40_barrier_vf_bound2.i [2023-08-03 15:53:51,124 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 15:53:51,130 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 15:53:51,130 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 15:53:51,130 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 15:53:51,161 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 15:53:51,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 53 transitions, 111 flow [2023-08-03 15:53:51,220 INFO L124 PetriNetUnfolderBase]: 4/63 cut-off events. [2023-08-03 15:53:51,220 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:53:51,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 63 events. 4/63 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 80 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 37. Up to 4 conditions per place. [2023-08-03 15:53:51,224 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 53 transitions, 111 flow [2023-08-03 15:53:51,226 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 53 transitions, 111 flow [2023-08-03 15:53:51,228 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 15:53:51,233 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 53 places, 53 transitions, 111 flow [2023-08-03 15:53:51,234 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 53 places, 53 transitions, 111 flow [2023-08-03 15:53:51,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 53 transitions, 111 flow [2023-08-03 15:53:51,245 INFO L124 PetriNetUnfolderBase]: 4/63 cut-off events. [2023-08-03 15:53:51,245 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:53:51,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 63 events. 4/63 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 80 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 37. Up to 4 conditions per place. [2023-08-03 15:53:51,246 INFO L119 LiptonReduction]: Number of co-enabled transitions 704 [2023-08-03 15:53:52,994 INFO L134 LiptonReduction]: Checked pairs total: 572 [2023-08-03 15:53:52,995 INFO L136 LiptonReduction]: Total number of compositions: 54 [2023-08-03 15:53:53,004 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 15:53:53,008 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@36aad912, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 15:53:53,008 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 15:53:53,010 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 15:53:53,010 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-08-03 15:53:53,010 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:53:53,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:53:53,011 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 15:53:53,011 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 15:53:53,014 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:53:53,015 INFO L85 PathProgramCache]: Analyzing trace with hash 9833958, now seen corresponding path program 1 times [2023-08-03 15:53:53,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:53:53,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417576731] [2023-08-03 15:53:53,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:53:53,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:53:53,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:53:53,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 15:53:53,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:53:53,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417576731] [2023-08-03 15:53:53,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417576731] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:53:53,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:53:53,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 15:53:53,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413543828] [2023-08-03 15:53:53,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:53:53,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 15:53:53,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:53:53,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 15:53:53,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 15:53:53,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 107 [2023-08-03 15:53:53,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 11 places, 8 transitions, 21 flow. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:53:53,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:53:53,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 107 [2023-08-03 15:53:53,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:53:53,310 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-08-03 15:53:53,311 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:53:53,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21 conditions, 8 events. 0/8 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 4 event pairs, 0 based on Foata normal form. 4/10 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2023-08-03 15:53:53,312 INFO L140 encePairwiseOnDemand]: 104/107 looper letters, 3 selfloop transitions, 1 changer transitions 1/6 dead transitions. [2023-08-03 15:53:53,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 11 places, 6 transitions, 27 flow [2023-08-03 15:53:53,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 15:53:53,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 15:53:53,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 127 transitions. [2023-08-03 15:53:53,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3956386292834891 [2023-08-03 15:53:53,323 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 127 transitions. [2023-08-03 15:53:53,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 127 transitions. [2023-08-03 15:53:53,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:53:53,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 127 transitions. [2023-08-03 15:53:53,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:53:53,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:53:53,332 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:53:53,333 INFO L175 Difference]: Start difference. First operand has 11 places, 8 transitions, 21 flow. Second operand 3 states and 127 transitions. [2023-08-03 15:53:53,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 11 places, 6 transitions, 27 flow [2023-08-03 15:53:53,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 11 places, 6 transitions, 27 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 15:53:53,336 INFO L231 Difference]: Finished difference. Result has 11 places, 5 transitions, 17 flow [2023-08-03 15:53:53,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=17, PETRI_DIFFERENCE_MINUEND_PLACES=9, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=5, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=17, PETRI_PLACES=11, PETRI_TRANSITIONS=5} [2023-08-03 15:53:53,340 INFO L281 CegarLoopForPetriNet]: 11 programPoint places, 0 predicate places. [2023-08-03 15:53:53,340 INFO L495 AbstractCegarLoop]: Abstraction has has 11 places, 5 transitions, 17 flow [2023-08-03 15:53:53,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:53:53,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:53:53,341 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 15:53:53,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 15:53:53,341 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 15:53:53,343 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:53:53,343 INFO L85 PathProgramCache]: Analyzing trace with hash 860495286, now seen corresponding path program 1 times [2023-08-03 15:53:53,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:53:53,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637510425] [2023-08-03 15:53:53,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:53:53,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:53:53,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 15:53:53,369 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 15:53:53,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 15:53:53,399 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 15:53:53,399 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 15:53:53,400 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-03 15:53:53,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-03 15:53:53,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-08-03 15:53:53,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 15:53:53,405 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 15:53:53,406 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 15:53:53,407 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 15:53:53,422 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 15:53:53,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 76 transitions, 164 flow [2023-08-03 15:53:53,449 INFO L124 PetriNetUnfolderBase]: 7/101 cut-off events. [2023-08-03 15:53:53,450 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 15:53:53,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 101 events. 7/101 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 175 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 64. Up to 6 conditions per place. [2023-08-03 15:53:53,451 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 76 transitions, 164 flow [2023-08-03 15:53:53,453 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 76 transitions, 164 flow [2023-08-03 15:53:53,453 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 15:53:53,453 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 76 transitions, 164 flow [2023-08-03 15:53:53,453 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 76 places, 76 transitions, 164 flow [2023-08-03 15:53:53,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 76 transitions, 164 flow [2023-08-03 15:53:53,475 INFO L124 PetriNetUnfolderBase]: 7/101 cut-off events. [2023-08-03 15:53:53,476 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 15:53:53,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 101 events. 7/101 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 175 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 64. Up to 6 conditions per place. [2023-08-03 15:53:53,480 INFO L119 LiptonReduction]: Number of co-enabled transitions 2420 [2023-08-03 15:53:54,216 INFO L134 LiptonReduction]: Checked pairs total: 8222 [2023-08-03 15:53:54,216 INFO L136 LiptonReduction]: Total number of compositions: 51 [2023-08-03 15:53:54,217 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 15:53:54,218 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@36aad912, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 15:53:54,218 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 15:53:54,221 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 15:53:54,221 INFO L124 PetriNetUnfolderBase]: 1/28 cut-off events. [2023-08-03 15:53:54,221 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 15:53:54,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:53:54,221 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 15:53:54,221 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 15:53:54,222 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:53:54,222 INFO L85 PathProgramCache]: Analyzing trace with hash -388341964, now seen corresponding path program 1 times [2023-08-03 15:53:54,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:53:54,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909745338] [2023-08-03 15:53:54,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:53:54,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:53:54,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:53:54,298 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 15:53:54,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:53:54,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909745338] [2023-08-03 15:53:54,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909745338] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:53:54,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:53:54,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 15:53:54,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294153924] [2023-08-03 15:53:54,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:53:54,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 15:53:54,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:53:54,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 15:53:54,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 15:53:54,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 127 [2023-08-03 15:53:54,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 36 transitions, 84 flow. Second operand has 5 states, 5 states have (on average 53.6) internal successors, (268), 5 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:53:54,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:53:54,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 127 [2023-08-03 15:53:54,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:53:54,435 INFO L124 PetriNetUnfolderBase]: 413/763 cut-off events. [2023-08-03 15:53:54,435 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2023-08-03 15:53:54,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1476 conditions, 763 events. 413/763 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3988 event pairs, 166 based on Foata normal form. 0/685 useless extension candidates. Maximal degree in co-relation 576. Up to 476 conditions per place. [2023-08-03 15:53:54,438 INFO L140 encePairwiseOnDemand]: 121/127 looper letters, 45 selfloop transitions, 4 changer transitions 1/61 dead transitions. [2023-08-03 15:53:54,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 61 transitions, 230 flow [2023-08-03 15:53:54,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 15:53:54,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 15:53:54,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 316 transitions. [2023-08-03 15:53:54,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49763779527559054 [2023-08-03 15:53:54,441 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 316 transitions. [2023-08-03 15:53:54,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 316 transitions. [2023-08-03 15:53:54,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:53:54,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 316 transitions. [2023-08-03 15:53:54,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 63.2) internal successors, (316), 5 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:53:54,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:53:54,444 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:53:54,444 INFO L175 Difference]: Start difference. First operand has 39 places, 36 transitions, 84 flow. Second operand 5 states and 316 transitions. [2023-08-03 15:53:54,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 61 transitions, 230 flow [2023-08-03 15:53:54,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 61 transitions, 229 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 15:53:54,446 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 98 flow [2023-08-03 15:53:54,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=98, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2023-08-03 15:53:54,447 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 3 predicate places. [2023-08-03 15:53:54,447 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 98 flow [2023-08-03 15:53:54,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 53.6) internal successors, (268), 5 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:53:54,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:53:54,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:53:54,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 15:53:54,448 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 15:53:54,448 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:53:54,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1798087988, now seen corresponding path program 1 times [2023-08-03 15:53:54,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:53:54,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072257037] [2023-08-03 15:53:54,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:53:54,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:53:54,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:53:54,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 15:53:54,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:53:54,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072257037] [2023-08-03 15:53:54,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072257037] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:53:54,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:53:54,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 15:53:54,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028533257] [2023-08-03 15:53:54,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:53:54,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 15:53:54,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:53:54,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 15:53:54,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 15:53:54,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 127 [2023-08-03 15:53:54,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 98 flow. Second operand has 5 states, 5 states have (on average 49.0) internal successors, (245), 5 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:53:54,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:53:54,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 127 [2023-08-03 15:53:54,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:53:54,790 INFO L124 PetriNetUnfolderBase]: 1117/1995 cut-off events. [2023-08-03 15:53:54,790 INFO L125 PetriNetUnfolderBase]: For 1473/1473 co-relation queries the response was YES. [2023-08-03 15:53:54,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4883 conditions, 1995 events. 1117/1995 cut-off events. For 1473/1473 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 11915 event pairs, 169 based on Foata normal form. 0/1899 useless extension candidates. Maximal degree in co-relation 4366. Up to 729 conditions per place. [2023-08-03 15:53:54,797 INFO L140 encePairwiseOnDemand]: 118/127 looper letters, 91 selfloop transitions, 18 changer transitions 0/115 dead transitions. [2023-08-03 15:53:54,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 115 transitions, 558 flow [2023-08-03 15:53:54,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-03 15:53:54,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-03 15:53:54,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 436 transitions. [2023-08-03 15:53:54,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4904386951631046 [2023-08-03 15:53:54,800 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 436 transitions. [2023-08-03 15:53:54,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 436 transitions. [2023-08-03 15:53:54,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:53:54,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 436 transitions. [2023-08-03 15:53:54,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 62.285714285714285) internal successors, (436), 7 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:53:54,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 127.0) internal successors, (1016), 8 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:53:54,804 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 127.0) internal successors, (1016), 8 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:53:54,805 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 98 flow. Second operand 7 states and 436 transitions. [2023-08-03 15:53:54,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 115 transitions, 558 flow [2023-08-03 15:53:54,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 115 transitions, 557 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 15:53:54,808 INFO L231 Difference]: Finished difference. Result has 53 places, 52 transitions, 229 flow [2023-08-03 15:53:54,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=229, PETRI_PLACES=53, PETRI_TRANSITIONS=52} [2023-08-03 15:53:54,810 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 14 predicate places. [2023-08-03 15:53:54,810 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 52 transitions, 229 flow [2023-08-03 15:53:54,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 49.0) internal successors, (245), 5 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:53:54,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:53:54,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:53:54,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-03 15:53:54,811 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 15:53:54,811 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:53:54,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1992195241, now seen corresponding path program 1 times [2023-08-03 15:53:54,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:53:54,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396879707] [2023-08-03 15:53:54,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:53:54,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:53:54,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:53:54,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 15:53:54,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:53:54,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396879707] [2023-08-03 15:53:54,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396879707] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:53:54,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:53:54,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 15:53:54,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141911983] [2023-08-03 15:53:54,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:53:54,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 15:53:54,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:53:54,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 15:53:54,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 15:53:54,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 127 [2023-08-03 15:53:54,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 52 transitions, 229 flow. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:53:54,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:53:54,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 127 [2023-08-03 15:53:54,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:53:55,005 INFO L124 PetriNetUnfolderBase]: 717/1329 cut-off events. [2023-08-03 15:53:55,005 INFO L125 PetriNetUnfolderBase]: For 1654/1705 co-relation queries the response was YES. [2023-08-03 15:53:55,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3821 conditions, 1329 events. 717/1329 cut-off events. For 1654/1705 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 7516 event pairs, 315 based on Foata normal form. 96/1356 useless extension candidates. Maximal degree in co-relation 2932. Up to 648 conditions per place. [2023-08-03 15:53:55,011 INFO L140 encePairwiseOnDemand]: 120/127 looper letters, 45 selfloop transitions, 5 changer transitions 1/70 dead transitions. [2023-08-03 15:53:55,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 70 transitions, 403 flow [2023-08-03 15:53:55,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 15:53:55,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 15:53:55,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 199 transitions. [2023-08-03 15:53:55,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5223097112860893 [2023-08-03 15:53:55,012 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 199 transitions. [2023-08-03 15:53:55,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 199 transitions. [2023-08-03 15:53:55,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:53:55,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 199 transitions. [2023-08-03 15:53:55,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:53:55,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:53:55,013 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:53:55,014 INFO L175 Difference]: Start difference. First operand has 53 places, 52 transitions, 229 flow. Second operand 3 states and 199 transitions. [2023-08-03 15:53:55,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 70 transitions, 403 flow [2023-08-03 15:53:55,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 70 transitions, 403 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 15:53:55,017 INFO L231 Difference]: Finished difference. Result has 56 places, 53 transitions, 250 flow [2023-08-03 15:53:55,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=250, PETRI_PLACES=56, PETRI_TRANSITIONS=53} [2023-08-03 15:53:55,018 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 17 predicate places. [2023-08-03 15:53:55,018 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 53 transitions, 250 flow [2023-08-03 15:53:55,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:53:55,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:53:55,018 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:53:55,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-03 15:53:55,018 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 15:53:55,019 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:53:55,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1138371046, now seen corresponding path program 1 times [2023-08-03 15:53:55,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:53:55,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977953085] [2023-08-03 15:53:55,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:53:55,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:53:55,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:53:55,057 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 15:53:55,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:53:55,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977953085] [2023-08-03 15:53:55,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977953085] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:53:55,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:53:55,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 15:53:55,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805569780] [2023-08-03 15:53:55,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:53:55,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 15:53:55,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:53:55,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 15:53:55,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 15:53:55,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 127 [2023-08-03 15:53:55,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 53 transitions, 250 flow. Second operand has 5 states, 5 states have (on average 49.4) internal successors, (247), 5 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:53:55,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:53:55,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 127 [2023-08-03 15:53:55,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:53:55,199 INFO L124 PetriNetUnfolderBase]: 564/1022 cut-off events. [2023-08-03 15:53:55,199 INFO L125 PetriNetUnfolderBase]: For 1422/1447 co-relation queries the response was YES. [2023-08-03 15:53:55,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3185 conditions, 1022 events. 564/1022 cut-off events. For 1422/1447 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5153 event pairs, 183 based on Foata normal form. 37/1044 useless extension candidates. Maximal degree in co-relation 2934. Up to 446 conditions per place. [2023-08-03 15:53:55,203 INFO L140 encePairwiseOnDemand]: 118/127 looper letters, 66 selfloop transitions, 14 changer transitions 11/100 dead transitions. [2023-08-03 15:53:55,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 100 transitions, 618 flow [2023-08-03 15:53:55,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-03 15:53:55,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-03 15:53:55,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 410 transitions. [2023-08-03 15:53:55,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4611923509561305 [2023-08-03 15:53:55,205 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 410 transitions. [2023-08-03 15:53:55,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 410 transitions. [2023-08-03 15:53:55,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:53:55,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 410 transitions. [2023-08-03 15:53:55,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 58.57142857142857) internal successors, (410), 7 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:53:55,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 127.0) internal successors, (1016), 8 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:53:55,207 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 127.0) internal successors, (1016), 8 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:53:55,208 INFO L175 Difference]: Start difference. First operand has 56 places, 53 transitions, 250 flow. Second operand 7 states and 410 transitions. [2023-08-03 15:53:55,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 100 transitions, 618 flow [2023-08-03 15:53:55,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 100 transitions, 613 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 15:53:55,211 INFO L231 Difference]: Finished difference. Result has 65 places, 56 transitions, 305 flow [2023-08-03 15:53:55,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=305, PETRI_PLACES=65, PETRI_TRANSITIONS=56} [2023-08-03 15:53:55,212 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 26 predicate places. [2023-08-03 15:53:55,212 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 56 transitions, 305 flow [2023-08-03 15:53:55,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 49.4) internal successors, (247), 5 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:53:55,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:53:55,212 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:53:55,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-03 15:53:55,212 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 15:53:55,213 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:53:55,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1997964529, now seen corresponding path program 1 times [2023-08-03 15:53:55,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:53:55,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000741307] [2023-08-03 15:53:55,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:53:55,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:53:55,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:53:55,274 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 15:53:55,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:53:55,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000741307] [2023-08-03 15:53:55,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000741307] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 15:53:55,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303283522] [2023-08-03 15:53:55,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:53:55,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:53:55,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:53:55,277 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 15:53:55,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-03 15:53:55,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:53:55,338 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-03 15:53:55,339 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 15:53:55,366 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 15:53:55,367 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 15:53:55,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303283522] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:53:55,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 15:53:55,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-08-03 15:53:55,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845120571] [2023-08-03 15:53:55,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:53:55,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 15:53:55,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:53:55,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 15:53:55,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-03 15:53:55,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 127 [2023-08-03 15:53:55,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 56 transitions, 305 flow. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:53:55,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:53:55,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 127 [2023-08-03 15:53:55,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:53:55,418 INFO L124 PetriNetUnfolderBase]: 104/265 cut-off events. [2023-08-03 15:53:55,419 INFO L125 PetriNetUnfolderBase]: For 351/351 co-relation queries the response was YES. [2023-08-03 15:53:55,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 831 conditions, 265 events. 104/265 cut-off events. For 351/351 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1043 event pairs, 39 based on Foata normal form. 18/283 useless extension candidates. Maximal degree in co-relation 626. Up to 117 conditions per place. [2023-08-03 15:53:55,420 INFO L140 encePairwiseOnDemand]: 119/127 looper letters, 24 selfloop transitions, 8 changer transitions 2/49 dead transitions. [2023-08-03 15:53:55,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 49 transitions, 312 flow [2023-08-03 15:53:55,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 15:53:55,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 15:53:55,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 202 transitions. [2023-08-03 15:53:55,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5301837270341208 [2023-08-03 15:53:55,422 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 202 transitions. [2023-08-03 15:53:55,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 202 transitions. [2023-08-03 15:53:55,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:53:55,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 202 transitions. [2023-08-03 15:53:55,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:53:55,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:53:55,433 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:53:55,433 INFO L175 Difference]: Start difference. First operand has 65 places, 56 transitions, 305 flow. Second operand 3 states and 202 transitions. [2023-08-03 15:53:55,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 49 transitions, 312 flow [2023-08-03 15:53:55,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 49 transitions, 278 flow, removed 9 selfloop flow, removed 7 redundant places. [2023-08-03 15:53:55,435 INFO L231 Difference]: Finished difference. Result has 58 places, 38 transitions, 178 flow [2023-08-03 15:53:55,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=58, PETRI_TRANSITIONS=38} [2023-08-03 15:53:55,437 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 19 predicate places. [2023-08-03 15:53:55,437 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 38 transitions, 178 flow [2023-08-03 15:53:55,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:53:55,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:53:55,437 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:53:55,444 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-03 15:53:55,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:53:55,641 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 15:53:55,642 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:53:55,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1125162359, now seen corresponding path program 1 times [2023-08-03 15:53:55,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:53:55,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830428038] [2023-08-03 15:53:55,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:53:55,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:53:55,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:53:55,727 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 15:53:55,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:53:55,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830428038] [2023-08-03 15:53:55,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830428038] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 15:53:55,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064304813] [2023-08-03 15:53:55,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:53:55,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:53:55,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:53:55,731 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 15:53:55,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-03 15:53:55,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:53:55,786 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-03 15:53:55,787 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 15:53:55,843 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 15:53:55,843 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 15:53:55,908 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 15:53:55,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064304813] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 15:53:55,908 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 15:53:55,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-03 15:53:55,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338642614] [2023-08-03 15:53:55,909 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 15:53:55,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-03 15:53:55,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:53:55,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-03 15:53:55,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-08-03 15:53:55,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 127 [2023-08-03 15:53:55,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 38 transitions, 178 flow. Second operand has 13 states, 13 states have (on average 44.53846153846154) internal successors, (579), 13 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:53:55,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:53:55,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 127 [2023-08-03 15:53:55,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:53:56,147 INFO L124 PetriNetUnfolderBase]: 93/215 cut-off events. [2023-08-03 15:53:56,147 INFO L125 PetriNetUnfolderBase]: For 305/305 co-relation queries the response was YES. [2023-08-03 15:53:56,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 748 conditions, 215 events. 93/215 cut-off events. For 305/305 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 707 event pairs, 40 based on Foata normal form. 3/218 useless extension candidates. Maximal degree in co-relation 452. Up to 102 conditions per place. [2023-08-03 15:53:56,148 INFO L140 encePairwiseOnDemand]: 117/127 looper letters, 27 selfloop transitions, 7 changer transitions 27/64 dead transitions. [2023-08-03 15:53:56,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 64 transitions, 454 flow [2023-08-03 15:53:56,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-03 15:53:56,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-03 15:53:56,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 562 transitions. [2023-08-03 15:53:56,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36876640419947504 [2023-08-03 15:53:56,150 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 562 transitions. [2023-08-03 15:53:56,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 562 transitions. [2023-08-03 15:53:56,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:53:56,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 562 transitions. [2023-08-03 15:53:56,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 46.833333333333336) internal successors, (562), 12 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:53:56,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 127.0) internal successors, (1651), 13 states have internal predecessors, (1651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:53:56,153 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 127.0) internal successors, (1651), 13 states have internal predecessors, (1651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:53:56,153 INFO L175 Difference]: Start difference. First operand has 58 places, 38 transitions, 178 flow. Second operand 12 states and 562 transitions. [2023-08-03 15:53:56,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 64 transitions, 454 flow [2023-08-03 15:53:56,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 64 transitions, 432 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-03 15:53:56,155 INFO L231 Difference]: Finished difference. Result has 60 places, 26 transitions, 120 flow [2023-08-03 15:53:56,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=120, PETRI_PLACES=60, PETRI_TRANSITIONS=26} [2023-08-03 15:53:56,155 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 21 predicate places. [2023-08-03 15:53:56,156 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 26 transitions, 120 flow [2023-08-03 15:53:56,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 44.53846153846154) internal successors, (579), 13 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:53:56,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:53:56,156 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:53:56,168 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-03 15:53:56,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-08-03 15:53:56,369 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 15:53:56,369 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:53:56,369 INFO L85 PathProgramCache]: Analyzing trace with hash 658294521, now seen corresponding path program 1 times [2023-08-03 15:53:56,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:53:56,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703745521] [2023-08-03 15:53:56,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:53:56,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:53:56,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:53:56,474 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 15:53:56,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:53:56,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703745521] [2023-08-03 15:53:56,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703745521] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:53:56,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:53:56,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-03 15:53:56,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716802724] [2023-08-03 15:53:56,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:53:56,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-03 15:53:56,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:53:56,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-03 15:53:56,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-03 15:53:56,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 127 [2023-08-03 15:53:56,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 26 transitions, 120 flow. Second operand has 7 states, 7 states have (on average 46.42857142857143) internal successors, (325), 7 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:53:56,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:53:56,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 127 [2023-08-03 15:53:56,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:53:56,571 INFO L124 PetriNetUnfolderBase]: 21/62 cut-off events. [2023-08-03 15:53:56,571 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2023-08-03 15:53:56,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 62 events. 21/62 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 123 event pairs, 7 based on Foata normal form. 3/65 useless extension candidates. Maximal degree in co-relation 210. Up to 24 conditions per place. [2023-08-03 15:53:56,571 INFO L140 encePairwiseOnDemand]: 120/127 looper letters, 0 selfloop transitions, 0 changer transitions 27/27 dead transitions. [2023-08-03 15:53:56,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 27 transitions, 198 flow [2023-08-03 15:53:56,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-03 15:53:56,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-03 15:53:56,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 378 transitions. [2023-08-03 15:53:56,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3720472440944882 [2023-08-03 15:53:56,573 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 378 transitions. [2023-08-03 15:53:56,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 378 transitions. [2023-08-03 15:53:56,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:53:56,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 378 transitions. [2023-08-03 15:53:56,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 47.25) internal successors, (378), 8 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:53:56,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 127.0) internal successors, (1143), 9 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:53:56,575 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 127.0) internal successors, (1143), 9 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:53:56,575 INFO L175 Difference]: Start difference. First operand has 60 places, 26 transitions, 120 flow. Second operand 8 states and 378 transitions. [2023-08-03 15:53:56,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 27 transitions, 198 flow [2023-08-03 15:53:56,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 27 transitions, 177 flow, removed 0 selfloop flow, removed 11 redundant places. [2023-08-03 15:53:56,576 INFO L231 Difference]: Finished difference. Result has 35 places, 0 transitions, 0 flow [2023-08-03 15:53:56,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=35, PETRI_TRANSITIONS=0} [2023-08-03 15:53:56,577 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -4 predicate places. [2023-08-03 15:53:56,577 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 0 transitions, 0 flow [2023-08-03 15:53:56,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 46.42857142857143) internal successors, (325), 7 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:53:56,577 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-03 15:53:56,577 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-03 15:53:56,577 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-08-03 15:53:56,577 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-08-03 15:53:56,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-03 15:53:56,578 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:53:56,580 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 15:53:56,580 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 15:53:56,583 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 03:53:56 BasicIcfg [2023-08-03 15:53:56,583 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 15:53:56,583 INFO L158 Benchmark]: Toolchain (without parser) took 6167.18ms. Allocated memory was 497.0MB in the beginning and 597.7MB in the end (delta: 100.7MB). Free memory was 457.4MB in the beginning and 535.4MB in the end (delta: -78.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. [2023-08-03 15:53:56,583 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 352.3MB. Free memory is still 305.3MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 15:53:56,583 INFO L158 Benchmark]: CACSL2BoogieTranslator took 338.18ms. Allocated memory is still 497.0MB. Free memory was 457.4MB in the beginning and 437.6MB in the end (delta: 19.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-03 15:53:56,583 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.41ms. Allocated memory is still 497.0MB. Free memory was 437.6MB in the beginning and 435.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 15:53:56,584 INFO L158 Benchmark]: Boogie Preprocessor took 27.37ms. Allocated memory is still 497.0MB. Free memory was 435.5MB in the beginning and 434.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 15:53:56,584 INFO L158 Benchmark]: RCFGBuilder took 282.73ms. Allocated memory is still 497.0MB. Free memory was 433.8MB in the beginning and 417.3MB in the end (delta: 16.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-08-03 15:53:56,584 INFO L158 Benchmark]: TraceAbstraction took 5466.72ms. Allocated memory was 497.0MB in the beginning and 597.7MB in the end (delta: 100.7MB). Free memory was 416.6MB in the beginning and 535.4MB in the end (delta: -118.8MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 15:53:56,585 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 352.3MB. Free memory is still 305.3MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 338.18ms. Allocated memory is still 497.0MB. Free memory was 457.4MB in the beginning and 437.6MB in the end (delta: 19.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 48.41ms. Allocated memory is still 497.0MB. Free memory was 437.6MB in the beginning and 435.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 27.37ms. Allocated memory is still 497.0MB. Free memory was 435.5MB in the beginning and 434.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 282.73ms. Allocated memory is still 497.0MB. Free memory was 433.8MB in the beginning and 417.3MB in the end (delta: 16.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 5466.72ms. Allocated memory was 497.0MB in the beginning and 597.7MB in the end (delta: 100.7MB). Free memory was 416.6MB in the beginning and 535.4MB in the end (delta: -118.8MB). There was no memory consumed. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 269]: Unsoundness Warning unspecified type, defaulting to int C: short [269] - GenericResultAtLocation [Line: 269]: Unsoundness Warning unspecified type, defaulting to int C: short [269] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.8s, 53 PlacesBefore, 11 PlacesAfterwards, 53 TransitionsBefore, 8 TransitionsAfterwards, 704 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 33 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 3 ChoiceCompositions, 54 TotalNumberOfCompositions, 572 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 572, independent: 572, independent conditional: 0, independent unconditional: 572, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 375, independent: 375, independent conditional: 0, independent unconditional: 375, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 572, independent: 197, independent conditional: 0, independent unconditional: 197, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 375, unknown conditional: 0, unknown unconditional: 375] , Statistics on independence cache: Total cache size (in pairs): 2, Positive cache size: 2, Positive conditional cache size: 0, Positive unconditional cache size: 2, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.8s, 76 PlacesBefore, 39 PlacesAfterwards, 76 TransitionsBefore, 36 TransitionsAfterwards, 2420 CoEnabledTransitionPairs, 5 FixpointIterations, 13 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 3 ChoiceCompositions, 51 TotalNumberOfCompositions, 8222 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4541, independent: 4273, independent conditional: 0, independent unconditional: 4273, dependent: 268, dependent conditional: 0, dependent unconditional: 268, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1238, independent: 1208, independent conditional: 0, independent unconditional: 1208, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4541, independent: 3065, independent conditional: 0, independent unconditional: 3065, dependent: 238, dependent conditional: 0, dependent unconditional: 238, unknown: 1238, unknown conditional: 0, unknown unconditional: 1238] , Statistics on independence cache: Total cache size (in pairs): 218, Positive cache size: 196, Positive conditional cache size: 0, Positive unconditional cache size: 196, Negative cache size: 22, Negative conditional cache size: 0, Negative unconditional cache size: 22, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 728]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 72 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.2s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 23 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5 mSDsluCounter, 13 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 18 IncrementalHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 13 mSDtfsCounter, 18 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 21 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 93 locations, 4 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: 3.2s, OverallIterations: 7, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 404 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 368 mSDsluCounter, 115 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 101 mSDsCounter, 60 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 980 IncrementalHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 60 mSolverCounterUnsat, 14 mSDtfsCounter, 980 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 102 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=305occurred in iteration=4, InterpolantAutomatonStates: 45, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 146 NumberOfCodeBlocks, 146 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 156 ConstructedInterpolants, 0 QuantifiedInterpolants, 567 SizeOfPredicates, 5 NumberOfNonLiveVariables, 250 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 10 InterpolantComputations, 6 PerfectInterpolantSequences, 18/22 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-03 15:53:56,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...