/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/increased_bounds/pthread-wmm_mix052_tso.oepc_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 17:41:06,671 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 17:41:06,750 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 17:41:06,755 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 17:41:06,756 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 17:41:06,757 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 17:41:06,757 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 17:41:06,787 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 17:41:06,787 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 17:41:06,791 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 17:41:06,791 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 17:41:06,792 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 17:41:06,792 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 17:41:06,794 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 17:41:06,794 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 17:41:06,794 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 17:41:06,794 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 17:41:06,795 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 17:41:06,795 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 17:41:06,795 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 17:41:06,795 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 17:41:06,796 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 17:41:06,796 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 17:41:06,796 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 17:41:06,797 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 17:41:06,797 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 17:41:06,798 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 17:41:06,799 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 17:41:06,799 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 17:41:06,799 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 17:41:06,800 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 17:41:06,800 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 17:41:06,800 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 17:41:06,800 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 17:41:06,801 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 17:41:06,801 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 17:41:06,801 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 17:41:06,801 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 17:41:06,801 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 17:41:06,801 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 17:41:06,802 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 17:41:06,802 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 17:41:07,031 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 17:41:07,053 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 17:41:07,055 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 17:41:07,056 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 17:41:07,056 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 17:41:07,057 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix052_tso.oepc_bound2.i [2023-08-03 17:41:08,223 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 17:41:08,515 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 17:41:08,515 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix052_tso.oepc_bound2.i [2023-08-03 17:41:08,533 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1823375ff/529e737bd45548e49bec458ea057c206/FLAGccda0cb0f [2023-08-03 17:41:08,546 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1823375ff/529e737bd45548e49bec458ea057c206 [2023-08-03 17:41:08,549 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 17:41:08,550 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 17:41:08,551 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 17:41:08,551 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 17:41:08,554 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 17:41:08,554 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 05:41:08" (1/1) ... [2023-08-03 17:41:08,555 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ef5bb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:41:08, skipping insertion in model container [2023-08-03 17:41:08,555 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 05:41:08" (1/1) ... [2023-08-03 17:41:08,591 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 17:41:08,710 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix052_tso.oepc_bound2.i[949,962] [2023-08-03 17:41:08,879 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 17:41:08,891 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 17:41:08,903 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix052_tso.oepc_bound2.i[949,962] [2023-08-03 17:41:08,920 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 17:41:08,928 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 17:41:08,980 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 17:41:09,007 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 17:41:09,007 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 17:41:09,012 INFO L206 MainTranslator]: Completed translation [2023-08-03 17:41:09,013 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:41:09 WrapperNode [2023-08-03 17:41:09,013 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 17:41:09,014 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 17:41:09,014 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 17:41:09,014 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 17:41:09,019 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:41:09" (1/1) ... [2023-08-03 17:41:09,031 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:41:09" (1/1) ... [2023-08-03 17:41:09,056 INFO L138 Inliner]: procedures = 176, calls = 54, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 169 [2023-08-03 17:41:09,057 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 17:41:09,057 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 17:41:09,057 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 17:41:09,057 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 17:41:09,065 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:41:09" (1/1) ... [2023-08-03 17:41:09,065 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:41:09" (1/1) ... [2023-08-03 17:41:09,068 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:41:09" (1/1) ... [2023-08-03 17:41:09,069 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:41:09" (1/1) ... [2023-08-03 17:41:09,104 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:41:09" (1/1) ... [2023-08-03 17:41:09,107 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:41:09" (1/1) ... [2023-08-03 17:41:09,109 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:41:09" (1/1) ... [2023-08-03 17:41:09,110 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:41:09" (1/1) ... [2023-08-03 17:41:09,113 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 17:41:09,114 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 17:41:09,114 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 17:41:09,114 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 17:41:09,115 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:41:09" (1/1) ... [2023-08-03 17:41:09,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 17:41:09,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 17:41:09,149 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 17:41:09,168 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 17:41:09,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 17:41:09,191 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 17:41:09,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 17:41:09,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 17:41:09,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 17:41:09,193 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-03 17:41:09,193 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-03 17:41:09,193 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-03 17:41:09,194 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-03 17:41:09,194 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-03 17:41:09,194 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-03 17:41:09,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 17:41:09,194 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 17:41:09,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 17:41:09,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 17:41:09,196 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 17:41:09,359 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 17:41:09,360 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 17:41:09,656 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 17:41:09,802 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 17:41:09,802 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-03 17:41:09,804 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 05:41:09 BoogieIcfgContainer [2023-08-03 17:41:09,804 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 17:41:09,806 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 17:41:09,806 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 17:41:09,809 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 17:41:09,809 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 05:41:08" (1/3) ... [2023-08-03 17:41:09,810 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6edbcbe9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 05:41:09, skipping insertion in model container [2023-08-03 17:41:09,810 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:41:09" (2/3) ... [2023-08-03 17:41:09,810 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6edbcbe9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 05:41:09, skipping insertion in model container [2023-08-03 17:41:09,810 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 05:41:09" (3/3) ... [2023-08-03 17:41:09,811 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_mix052_tso.oepc_bound2.i [2023-08-03 17:41:09,818 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 17:41:09,826 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 17:41:09,826 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-03 17:41:09,827 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 17:41:09,871 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 17:41:09,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 131 places, 129 transitions, 273 flow [2023-08-03 17:41:10,005 INFO L124 PetriNetUnfolderBase]: 30/449 cut-off events. [2023-08-03 17:41:10,005 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:41:10,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 474 conditions, 449 events. 30/449 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1977 event pairs, 0 based on Foata normal form. 0/395 useless extension candidates. Maximal degree in co-relation 270. Up to 16 conditions per place. [2023-08-03 17:41:10,014 INFO L82 GeneralOperation]: Start removeDead. Operand has 131 places, 129 transitions, 273 flow [2023-08-03 17:41:10,018 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 131 places, 129 transitions, 273 flow [2023-08-03 17:41:10,021 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 17:41:10,029 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 131 places, 129 transitions, 273 flow [2023-08-03 17:41:10,031 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 131 places, 129 transitions, 273 flow [2023-08-03 17:41:10,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 131 places, 129 transitions, 273 flow [2023-08-03 17:41:10,107 INFO L124 PetriNetUnfolderBase]: 30/449 cut-off events. [2023-08-03 17:41:10,107 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:41:10,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 474 conditions, 449 events. 30/449 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1977 event pairs, 0 based on Foata normal form. 0/395 useless extension candidates. Maximal degree in co-relation 270. Up to 16 conditions per place. [2023-08-03 17:41:10,113 INFO L119 LiptonReduction]: Number of co-enabled transitions 2698 [2023-08-03 17:41:14,199 INFO L134 LiptonReduction]: Checked pairs total: 7190 [2023-08-03 17:41:14,199 INFO L136 LiptonReduction]: Total number of compositions: 112 [2023-08-03 17:41:14,214 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 17:41:14,221 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;@3e225212, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 17:41:14,221 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-03 17:41:14,226 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 17:41:14,227 INFO L124 PetriNetUnfolderBase]: 0/16 cut-off events. [2023-08-03 17:41:14,227 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:41:14,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:41:14,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 17:41:14,228 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 17:41:14,232 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:41:14,232 INFO L85 PathProgramCache]: Analyzing trace with hash 538285060, now seen corresponding path program 1 times [2023-08-03 17:41:14,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:41:14,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976567915] [2023-08-03 17:41:14,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:41:14,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:41:14,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:41:14,506 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 17:41:14,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:41:14,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976567915] [2023-08-03 17:41:14,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976567915] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:41:14,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:41:14,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 17:41:14,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607349491] [2023-08-03 17:41:14,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:41:14,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:41:14,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:41:14,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:41:14,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:41:14,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 241 [2023-08-03 17:41:14,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 32 transitions, 79 flow. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 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 17:41:14,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:41:14,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 241 [2023-08-03 17:41:14,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:41:14,994 INFO L124 PetriNetUnfolderBase]: 1677/2696 cut-off events. [2023-08-03 17:41:14,994 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-08-03 17:41:14,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5402 conditions, 2696 events. 1677/2696 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 14910 event pairs, 1008 based on Foata normal form. 0/2244 useless extension candidates. Maximal degree in co-relation 5381. Up to 2570 conditions per place. [2023-08-03 17:41:15,012 INFO L140 encePairwiseOnDemand]: 238/241 looper letters, 28 selfloop transitions, 2 changer transitions 0/36 dead transitions. [2023-08-03 17:41:15,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 36 transitions, 147 flow [2023-08-03 17:41:15,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:41:15,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:41:15,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 358 transitions. [2023-08-03 17:41:15,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4951590594744122 [2023-08-03 17:41:15,032 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 358 transitions. [2023-08-03 17:41:15,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 358 transitions. [2023-08-03 17:41:15,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:41:15,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 358 transitions. [2023-08-03 17:41:15,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 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 17:41:15,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 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 17:41:15,048 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 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 17:41:15,050 INFO L175 Difference]: Start difference. First operand has 39 places, 32 transitions, 79 flow. Second operand 3 states and 358 transitions. [2023-08-03 17:41:15,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 36 transitions, 147 flow [2023-08-03 17:41:15,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 36 transitions, 147 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 17:41:15,055 INFO L231 Difference]: Finished difference. Result has 42 places, 32 transitions, 87 flow [2023-08-03 17:41:15,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=42, PETRI_TRANSITIONS=32} [2023-08-03 17:41:15,059 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 3 predicate places. [2023-08-03 17:41:15,060 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 32 transitions, 87 flow [2023-08-03 17:41:15,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 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 17:41:15,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:41:15,061 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 17:41:15,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 17:41:15,061 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 17:41:15,068 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:41:15,068 INFO L85 PathProgramCache]: Analyzing trace with hash -502804437, now seen corresponding path program 1 times [2023-08-03 17:41:15,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:41:15,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860291544] [2023-08-03 17:41:15,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:41:15,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:41:15,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:41:15,111 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 17:41:15,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:41:15,152 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 17:41:15,152 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 17:41:15,153 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2023-08-03 17:41:15,155 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-08-03 17:41:15,156 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2023-08-03 17:41:15,156 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2023-08-03 17:41:15,156 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2023-08-03 17:41:15,157 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-08-03 17:41:15,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 17:41:15,157 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 17:41:15,160 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 17:41:15,160 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 17:41:15,196 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 17:41:15,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 154 transitions, 344 flow [2023-08-03 17:41:15,388 INFO L124 PetriNetUnfolderBase]: 93/1381 cut-off events. [2023-08-03 17:41:15,388 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 17:41:15,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1479 conditions, 1381 events. 93/1381 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 9569 event pairs, 0 based on Foata normal form. 0/1216 useless extension candidates. Maximal degree in co-relation 1004. Up to 54 conditions per place. [2023-08-03 17:41:15,396 INFO L82 GeneralOperation]: Start removeDead. Operand has 162 places, 154 transitions, 344 flow [2023-08-03 17:41:15,401 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 154 transitions, 344 flow [2023-08-03 17:41:15,401 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 17:41:15,401 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 162 places, 154 transitions, 344 flow [2023-08-03 17:41:15,401 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 162 places, 154 transitions, 344 flow [2023-08-03 17:41:15,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 154 transitions, 344 flow [2023-08-03 17:41:15,528 INFO L124 PetriNetUnfolderBase]: 93/1381 cut-off events. [2023-08-03 17:41:15,528 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 17:41:15,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1479 conditions, 1381 events. 93/1381 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 9569 event pairs, 0 based on Foata normal form. 0/1216 useless extension candidates. Maximal degree in co-relation 1004. Up to 54 conditions per place. [2023-08-03 17:41:15,560 INFO L119 LiptonReduction]: Number of co-enabled transitions 6496 [2023-08-03 17:41:19,366 INFO L134 LiptonReduction]: Checked pairs total: 18318 [2023-08-03 17:41:19,366 INFO L136 LiptonReduction]: Total number of compositions: 119 [2023-08-03 17:41:19,368 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 17:41:19,369 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;@3e225212, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 17:41:19,369 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-03 17:41:19,372 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 17:41:19,372 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2023-08-03 17:41:19,372 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:41:19,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:41:19,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 17:41:19,372 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 17:41:19,373 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:41:19,373 INFO L85 PathProgramCache]: Analyzing trace with hash 822689782, now seen corresponding path program 1 times [2023-08-03 17:41:19,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:41:19,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014373496] [2023-08-03 17:41:19,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:41:19,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:41:19,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:41:19,458 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 17:41:19,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:41:19,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014373496] [2023-08-03 17:41:19,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014373496] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:41:19,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:41:19,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 17:41:19,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867738110] [2023-08-03 17:41:19,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:41:19,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:41:19,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:41:19,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:41:19,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:41:19,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 273 [2023-08-03 17:41:19,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 51 transitions, 138 flow. Second operand has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 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 17:41:19,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:41:19,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 273 [2023-08-03 17:41:19,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:42:02,503 INFO L124 PetriNetUnfolderBase]: 363272/477640 cut-off events. [2023-08-03 17:42:02,504 INFO L125 PetriNetUnfolderBase]: For 9556/9556 co-relation queries the response was YES. [2023-08-03 17:42:03,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 945664 conditions, 477640 events. 363272/477640 cut-off events. For 9556/9556 co-relation queries the response was YES. Maximal size of possible extension queue 12422. Compared 3377960 event pairs, 293960 based on Foata normal form. 0/416556 useless extension candidates. Maximal degree in co-relation 203905. Up to 455689 conditions per place. [2023-08-03 17:42:05,636 INFO L140 encePairwiseOnDemand]: 270/273 looper letters, 42 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2023-08-03 17:42:05,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 56 transitions, 236 flow [2023-08-03 17:42:05,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:42:05,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:42:05,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 423 transitions. [2023-08-03 17:42:05,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5164835164835165 [2023-08-03 17:42:05,638 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 423 transitions. [2023-08-03 17:42:05,638 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 423 transitions. [2023-08-03 17:42:05,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:42:05,639 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 423 transitions. [2023-08-03 17:42:05,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 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 17:42:05,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 0 states have call successors, (0), 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 17:42:05,643 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 0 states have call successors, (0), 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 17:42:05,643 INFO L175 Difference]: Start difference. First operand has 64 places, 51 transitions, 138 flow. Second operand 3 states and 423 transitions. [2023-08-03 17:42:05,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 56 transitions, 236 flow [2023-08-03 17:42:05,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 56 transitions, 230 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-03 17:42:05,659 INFO L231 Difference]: Finished difference. Result has 67 places, 52 transitions, 144 flow [2023-08-03 17:42:05,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=67, PETRI_TRANSITIONS=52} [2023-08-03 17:42:05,660 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 3 predicate places. [2023-08-03 17:42:05,661 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 52 transitions, 144 flow [2023-08-03 17:42:05,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 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 17:42:05,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:42:05,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 17:42:05,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 17:42:05,661 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 17:42:05,662 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:42:05,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1016694114, now seen corresponding path program 1 times [2023-08-03 17:42:05,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:42:05,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538150913] [2023-08-03 17:42:05,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:42:05,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:42:05,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:42:05,710 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 17:42:05,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:42:05,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538150913] [2023-08-03 17:42:05,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538150913] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 17:42:05,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755842427] [2023-08-03 17:42:05,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:42:05,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 17:42:05,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 17:42:05,718 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 17:42:05,751 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 17:42:05,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:42:05,819 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 17:42:05,820 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 17:42:05,865 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 17:42:05,866 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 17:42:05,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 17:42:05,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755842427] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 17:42:05,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 17:42:05,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 17:42:05,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208788365] [2023-08-03 17:42:05,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 17:42:05,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 17:42:05,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:42:05,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 17:42:05,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 17:42:05,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 273 [2023-08-03 17:42:05,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 52 transitions, 144 flow. Second operand has 5 states, 5 states have (on average 127.4) internal successors, (637), 5 states have internal predecessors, (637), 0 states have call successors, (0), 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 17:42:05,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:42:05,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 273 [2023-08-03 17:42:05,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:42:39,131 INFO L124 PetriNetUnfolderBase]: 301714/393330 cut-off events. [2023-08-03 17:42:39,131 INFO L125 PetriNetUnfolderBase]: For 6296/6296 co-relation queries the response was YES. [2023-08-03 17:42:40,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 777591 conditions, 393330 events. 301714/393330 cut-off events. For 6296/6296 co-relation queries the response was YES. Maximal size of possible extension queue 10594. Compared 2673150 event pairs, 190828 based on Foata normal form. 4/344518 useless extension candidates. Maximal degree in co-relation 203631. Up to 375577 conditions per place. [2023-08-03 17:42:41,804 INFO L140 encePairwiseOnDemand]: 269/273 looper letters, 47 selfloop transitions, 4 changer transitions 0/63 dead transitions. [2023-08-03 17:42:41,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 63 transitions, 268 flow [2023-08-03 17:42:41,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 17:42:41,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 17:42:41,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 552 transitions. [2023-08-03 17:42:41,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5054945054945055 [2023-08-03 17:42:41,807 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 552 transitions. [2023-08-03 17:42:41,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 552 transitions. [2023-08-03 17:42:41,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:42:41,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 552 transitions. [2023-08-03 17:42:41,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 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 17:42:41,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 273.0) internal successors, (1365), 5 states have internal predecessors, (1365), 0 states have call successors, (0), 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 17:42:41,811 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 273.0) internal successors, (1365), 5 states have internal predecessors, (1365), 0 states have call successors, (0), 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 17:42:41,811 INFO L175 Difference]: Start difference. First operand has 67 places, 52 transitions, 144 flow. Second operand 4 states and 552 transitions. [2023-08-03 17:42:41,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 63 transitions, 268 flow [2023-08-03 17:42:41,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 63 transitions, 266 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 17:42:41,814 INFO L231 Difference]: Finished difference. Result has 71 places, 53 transitions, 162 flow [2023-08-03 17:42:41,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=162, PETRI_PLACES=71, PETRI_TRANSITIONS=53} [2023-08-03 17:42:41,814 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 7 predicate places. [2023-08-03 17:42:41,815 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 53 transitions, 162 flow [2023-08-03 17:42:41,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 127.4) internal successors, (637), 5 states have internal predecessors, (637), 0 states have call successors, (0), 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 17:42:41,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:42:41,815 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 17:42:41,823 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-03 17:42:42,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 17:42:42,020 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 17:42:42,021 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:42:42,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1747611874, now seen corresponding path program 1 times [2023-08-03 17:42:42,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:42:42,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261183962] [2023-08-03 17:42:42,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:42:42,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:42:42,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:42:42,099 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 17:42:42,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:42:42,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261183962] [2023-08-03 17:42:42,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261183962] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 17:42:42,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458554577] [2023-08-03 17:42:42,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:42:42,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 17:42:42,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 17:42:42,101 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 17:42:42,103 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 17:42:42,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:42:42,180 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 17:42:42,181 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 17:42:42,203 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 17:42:42,203 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 17:42:42,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1458554577] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:42:42,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 17:42:42,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 17:42:42,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60707901] [2023-08-03 17:42:42,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:42:42,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 17:42:42,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:42:42,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 17:42:42,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 17:42:42,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 273 [2023-08-03 17:42:42,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 53 transitions, 162 flow. Second operand has 5 states, 5 states have (on average 126.6) internal successors, (633), 5 states have internal predecessors, (633), 0 states have call successors, (0), 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 17:42:42,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:42:42,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 273 [2023-08-03 17:42:42,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:43:17,691 INFO L124 PetriNetUnfolderBase]: 301690/393282 cut-off events. [2023-08-03 17:43:17,692 INFO L125 PetriNetUnfolderBase]: For 6396/6396 co-relation queries the response was YES. [2023-08-03 17:43:18,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 777555 conditions, 393282 events. 301690/393282 cut-off events. For 6396/6396 co-relation queries the response was YES. Maximal size of possible extension queue 10594. Compared 2672511 event pairs, 190816 based on Foata normal form. 16/344482 useless extension candidates. Maximal degree in co-relation 203607. Up to 375576 conditions per place. [2023-08-03 17:43:20,481 INFO L140 encePairwiseOnDemand]: 270/273 looper letters, 47 selfloop transitions, 3 changer transitions 0/61 dead transitions. [2023-08-03 17:43:20,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 61 transitions, 274 flow [2023-08-03 17:43:20,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 17:43:20,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 17:43:20,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 676 transitions. [2023-08-03 17:43:20,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49523809523809526 [2023-08-03 17:43:20,483 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 676 transitions. [2023-08-03 17:43:20,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 676 transitions. [2023-08-03 17:43:20,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:43:20,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 676 transitions. [2023-08-03 17:43:20,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 135.2) internal successors, (676), 5 states have internal predecessors, (676), 0 states have call successors, (0), 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 17:43:20,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 273.0) internal successors, (1638), 6 states have internal predecessors, (1638), 0 states have call successors, (0), 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 17:43:20,489 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 273.0) internal successors, (1638), 6 states have internal predecessors, (1638), 0 states have call successors, (0), 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 17:43:20,489 INFO L175 Difference]: Start difference. First operand has 71 places, 53 transitions, 162 flow. Second operand 5 states and 676 transitions. [2023-08-03 17:43:20,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 61 transitions, 274 flow [2023-08-03 17:43:20,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 61 transitions, 267 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-03 17:43:20,491 INFO L231 Difference]: Finished difference. Result has 71 places, 51 transitions, 151 flow [2023-08-03 17:43:20,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=151, PETRI_PLACES=71, PETRI_TRANSITIONS=51} [2023-08-03 17:43:20,492 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 7 predicate places. [2023-08-03 17:43:20,492 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 51 transitions, 151 flow [2023-08-03 17:43:20,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 126.6) internal successors, (633), 5 states have internal predecessors, (633), 0 states have call successors, (0), 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 17:43:20,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:43:20,493 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 17:43:20,501 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 17:43:20,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 17:43:20,699 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 17:43:20,699 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:43:20,699 INFO L85 PathProgramCache]: Analyzing trace with hash 123170831, now seen corresponding path program 1 times [2023-08-03 17:43:20,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:43:20,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607218932] [2023-08-03 17:43:20,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:43:20,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:43:20,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:43:20,788 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 17:43:20,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:43:20,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607218932] [2023-08-03 17:43:20,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607218932] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:43:20,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:43:20,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 17:43:20,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443612583] [2023-08-03 17:43:20,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:43:20,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:43:20,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:43:20,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:43:20,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:43:20,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 273 [2023-08-03 17:43:20,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 51 transitions, 151 flow. Second operand has 3 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 0 states have call successors, (0), 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 17:43:20,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:43:20,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 273 [2023-08-03 17:43:20,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:43:48,808 INFO L124 PetriNetUnfolderBase]: 259610/340295 cut-off events. [2023-08-03 17:43:48,808 INFO L125 PetriNetUnfolderBase]: For 5801/5801 co-relation queries the response was YES. [2023-08-03 17:43:49,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 670843 conditions, 340295 events. 259610/340295 cut-off events. For 5801/5801 co-relation queries the response was YES. Maximal size of possible extension queue 9294. Compared 2344443 event pairs, 42938 based on Foata normal form. 0/306823 useless extension candidates. Maximal degree in co-relation 319277. Up to 297729 conditions per place. [2023-08-03 17:43:51,014 INFO L140 encePairwiseOnDemand]: 268/273 looper letters, 63 selfloop transitions, 3 changer transitions 0/77 dead transitions. [2023-08-03 17:43:51,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 77 transitions, 348 flow [2023-08-03 17:43:51,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:43:51,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:43:51,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 454 transitions. [2023-08-03 17:43:51,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5543345543345544 [2023-08-03 17:43:51,016 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 454 transitions. [2023-08-03 17:43:51,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 454 transitions. [2023-08-03 17:43:51,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:43:51,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 454 transitions. [2023-08-03 17:43:51,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 0 states have call successors, (0), 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 17:43:51,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 0 states have call successors, (0), 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 17:43:51,020 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 0 states have call successors, (0), 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 17:43:51,020 INFO L175 Difference]: Start difference. First operand has 71 places, 51 transitions, 151 flow. Second operand 3 states and 454 transitions. [2023-08-03 17:43:51,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 77 transitions, 348 flow [2023-08-03 17:43:51,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 77 transitions, 343 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 17:43:51,024 INFO L231 Difference]: Finished difference. Result has 71 places, 53 transitions, 167 flow [2023-08-03 17:43:51,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=167, PETRI_PLACES=71, PETRI_TRANSITIONS=53} [2023-08-03 17:43:51,025 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 7 predicate places. [2023-08-03 17:43:51,025 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 53 transitions, 167 flow [2023-08-03 17:43:51,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 0 states have call successors, (0), 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 17:43:51,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:43:51,026 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 17:43:51,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-03 17:43:51,026 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 17:43:51,027 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:43:51,027 INFO L85 PathProgramCache]: Analyzing trace with hash -476214860, now seen corresponding path program 1 times [2023-08-03 17:43:51,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:43:51,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399068778] [2023-08-03 17:43:51,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:43:51,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:43:51,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:43:51,079 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 17:43:51,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:43:51,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399068778] [2023-08-03 17:43:51,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399068778] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:43:51,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:43:51,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 17:43:51,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811510345] [2023-08-03 17:43:51,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:43:51,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:43:51,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:43:51,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:43:51,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:43:51,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 273 [2023-08-03 17:43:51,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 53 transitions, 167 flow. Second operand has 3 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 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 17:43:51,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:43:51,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 273 [2023-08-03 17:43:51,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:44:20,203 INFO L124 PetriNetUnfolderBase]: 253322/332215 cut-off events. [2023-08-03 17:44:20,203 INFO L125 PetriNetUnfolderBase]: For 26409/26409 co-relation queries the response was YES. [2023-08-03 17:44:21,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 697976 conditions, 332215 events. 253322/332215 cut-off events. For 26409/26409 co-relation queries the response was YES. Maximal size of possible extension queue 9456. Compared 2273696 event pairs, 212698 based on Foata normal form. 0/299031 useless extension candidates. Maximal degree in co-relation 333429. Up to 315145 conditions per place. [2023-08-03 17:44:22,792 INFO L140 encePairwiseOnDemand]: 270/273 looper letters, 51 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2023-08-03 17:44:22,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 64 transitions, 298 flow [2023-08-03 17:44:22,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:44:22,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:44:22,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 429 transitions. [2023-08-03 17:44:22,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2023-08-03 17:44:22,794 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 429 transitions. [2023-08-03 17:44:22,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 429 transitions. [2023-08-03 17:44:22,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:44:22,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 429 transitions. [2023-08-03 17:44:22,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 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 17:44:22,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 0 states have call successors, (0), 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 17:44:22,796 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 0 states have call successors, (0), 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 17:44:22,797 INFO L175 Difference]: Start difference. First operand has 71 places, 53 transitions, 167 flow. Second operand 3 states and 429 transitions. [2023-08-03 17:44:22,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 64 transitions, 298 flow [2023-08-03 17:44:22,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 64 transitions, 294 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 17:44:22,823 INFO L231 Difference]: Finished difference. Result has 73 places, 54 transitions, 176 flow [2023-08-03 17:44:22,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=73, PETRI_TRANSITIONS=54} [2023-08-03 17:44:22,825 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 9 predicate places. [2023-08-03 17:44:22,826 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 54 transitions, 176 flow [2023-08-03 17:44:22,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 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 17:44:22,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:44:22,829 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 17:44:22,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-03 17:44:22,829 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 17:44:22,829 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:44:22,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1345487638, now seen corresponding path program 1 times [2023-08-03 17:44:22,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:44:22,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684003272] [2023-08-03 17:44:22,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:44:22,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:44:22,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:44:22,852 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 17:44:22,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:44:22,877 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 17:44:22,878 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 17:44:22,878 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2023-08-03 17:44:22,878 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-08-03 17:44:22,878 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2023-08-03 17:44:22,878 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2023-08-03 17:44:22,878 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2023-08-03 17:44:22,879 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2023-08-03 17:44:22,879 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-08-03 17:44:22,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-03 17:44:22,879 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-08-03 17:44:22,883 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 17:44:22,883 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 17:44:22,949 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 05:44:22 BasicIcfg [2023-08-03 17:44:22,950 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 17:44:22,950 INFO L158 Benchmark]: Toolchain (without parser) took 194400.41ms. Allocated memory was 348.1MB in the beginning and 16.0GB in the end (delta: 15.7GB). Free memory was 286.4MB in the beginning and 8.4GB in the end (delta: -8.1GB). Peak memory consumption was 7.6GB. Max. memory is 16.0GB. [2023-08-03 17:44:22,950 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 348.1MB. Free memory is still 294.9MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 17:44:22,951 INFO L158 Benchmark]: CACSL2BoogieTranslator took 462.01ms. Allocated memory is still 348.1MB. Free memory was 286.4MB in the beginning and 262.9MB in the end (delta: 23.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. [2023-08-03 17:44:22,951 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.15ms. Allocated memory is still 348.1MB. Free memory was 262.9MB in the beginning and 260.0MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 17:44:22,951 INFO L158 Benchmark]: Boogie Preprocessor took 55.96ms. Allocated memory was 348.1MB in the beginning and 541.1MB in the end (delta: 192.9MB). Free memory was 260.0MB in the beginning and 503.3MB in the end (delta: -243.3MB). Peak memory consumption was 9.8MB. Max. memory is 16.0GB. [2023-08-03 17:44:22,952 INFO L158 Benchmark]: RCFGBuilder took 690.50ms. Allocated memory is still 541.1MB. Free memory was 503.3MB in the beginning and 464.6MB in the end (delta: 38.7MB). Peak memory consumption was 39.8MB. Max. memory is 16.0GB. [2023-08-03 17:44:22,952 INFO L158 Benchmark]: TraceAbstraction took 193143.56ms. Allocated memory was 541.1MB in the beginning and 16.0GB in the end (delta: 15.5GB). Free memory was 463.8MB in the beginning and 8.4GB in the end (delta: -7.9GB). Peak memory consumption was 7.6GB. Max. memory is 16.0GB. [2023-08-03 17:44:22,954 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 348.1MB. Free memory is still 294.9MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 462.01ms. Allocated memory is still 348.1MB. Free memory was 286.4MB in the beginning and 262.9MB in the end (delta: 23.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 43.15ms. Allocated memory is still 348.1MB. Free memory was 262.9MB in the beginning and 260.0MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 55.96ms. Allocated memory was 348.1MB in the beginning and 541.1MB in the end (delta: 192.9MB). Free memory was 260.0MB in the beginning and 503.3MB in the end (delta: -243.3MB). Peak memory consumption was 9.8MB. Max. memory is 16.0GB. * RCFGBuilder took 690.50ms. Allocated memory is still 541.1MB. Free memory was 503.3MB in the beginning and 464.6MB in the end (delta: 38.7MB). Peak memory consumption was 39.8MB. Max. memory is 16.0GB. * TraceAbstraction took 193143.56ms. Allocated memory was 541.1MB in the beginning and 16.0GB in the end (delta: 15.5GB). Free memory was 463.8MB in the beginning and 8.4GB in the end (delta: -7.9GB). Peak memory consumption was 7.6GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.2s, 131 PlacesBefore, 39 PlacesAfterwards, 129 TransitionsBefore, 32 TransitionsAfterwards, 2698 CoEnabledTransitionPairs, 7 FixpointIterations, 36 TrivialSequentialCompositions, 56 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 15 ConcurrentYvCompositions, 5 ChoiceCompositions, 112 TotalNumberOfCompositions, 7190 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3139, independent: 2954, independent conditional: 0, independent unconditional: 2954, dependent: 185, dependent conditional: 0, dependent unconditional: 185, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1427, independent: 1388, independent conditional: 0, independent unconditional: 1388, dependent: 39, dependent conditional: 0, dependent unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3139, independent: 1566, independent conditional: 0, independent unconditional: 1566, dependent: 146, dependent conditional: 0, dependent unconditional: 146, unknown: 1427, unknown conditional: 0, unknown unconditional: 1427] , Statistics on independence cache: Total cache size (in pairs): 138, Positive cache size: 121, Positive conditional cache size: 0, Positive unconditional cache size: 121, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.0s, 162 PlacesBefore, 64 PlacesAfterwards, 154 TransitionsBefore, 51 TransitionsAfterwards, 6496 CoEnabledTransitionPairs, 6 FixpointIterations, 36 TrivialSequentialCompositions, 63 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 15 ConcurrentYvCompositions, 5 ChoiceCompositions, 119 TotalNumberOfCompositions, 18318 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 7645, independent: 7362, independent conditional: 0, independent unconditional: 7362, dependent: 283, dependent conditional: 0, dependent unconditional: 283, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3250, independent: 3181, independent conditional: 0, independent unconditional: 3181, dependent: 69, dependent conditional: 0, dependent unconditional: 69, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 7645, independent: 4181, independent conditional: 0, independent unconditional: 4181, dependent: 214, dependent conditional: 0, dependent unconditional: 214, unknown: 3250, unknown conditional: 0, unknown unconditional: 3250] , Statistics on independence cache: Total cache size (in pairs): 362, Positive cache size: 334, Positive conditional cache size: 0, Positive unconditional cache size: 334, Negative cache size: 28, Negative conditional cache size: 0, Negative unconditional cache size: 28, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L709] 0 int __unbuffered_cnt = 0; [L711] 0 int __unbuffered_p1_EAX = 0; [L713] 0 int __unbuffered_p2_EAX = 0; [L714] 0 _Bool main$tmp_guard0; [L715] 0 _Bool main$tmp_guard1; [L717] 0 int x = 0; [L718] 0 _Bool x$flush_delayed; [L719] 0 int x$mem_tmp; [L720] 0 _Bool x$r_buff0_thd0; [L721] 0 _Bool x$r_buff0_thd1; [L722] 0 _Bool x$r_buff0_thd2; [L723] 0 _Bool x$r_buff0_thd3; [L724] 0 _Bool x$r_buff1_thd0; [L725] 0 _Bool x$r_buff1_thd1; [L726] 0 _Bool x$r_buff1_thd2; [L727] 0 _Bool x$r_buff1_thd3; [L728] 0 _Bool x$read_delayed; [L729] 0 int *x$read_delayed_var; [L730] 0 int x$w_buff0; [L731] 0 _Bool x$w_buff0_used; [L732] 0 int x$w_buff1; [L733] 0 _Bool x$w_buff1_used; [L735] 0 int y = 0; [L737] 0 int z = 0; [L738] 0 _Bool weak$$choice0; [L739] 0 _Bool weak$$choice2; [L820] 0 pthread_t t1403[2]; [L821] 0 int asdf=0; VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, asdf=0, main$tmp_guard0=0, main$tmp_guard1=0, t1403={5:0}, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0, z=0] [L821] COND TRUE 0 asdf<2 [L821] FCALL, FORK 0 pthread_create(&t1403[asdf], ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, asdf=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1403[asdf], ((void *)0), P0, ((void *)0))=-3, t1403={5:0}, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0, z=0] [L821] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, asdf=1, main$tmp_guard0=0, main$tmp_guard1=0, t1403={5:0}, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0, z=0] [L821] COND TRUE 0 asdf<2 [L821] FCALL, FORK 0 pthread_create(&t1403[asdf], ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, asdf=1, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1403[asdf], ((void *)0), P0, ((void *)0))=-2, t1403={5:0}, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0, z=0] [L821] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t1403={5:0}, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0, z=0] [L821] COND FALSE 0 !(asdf<2) [L822] 0 pthread_t t1404[2]; [L823] 0 int asdf=0; VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, asdf=0, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t1403={5:0}, t1404={3:0}, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0, z=0] [L823] COND TRUE 0 asdf<2 [L823] FCALL, FORK 0 pthread_create(&t1404[asdf], ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, asdf=0, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1404[asdf], ((void *)0), P1, ((void *)0))=-1, t1403={5:0}, t1404={3:0}, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0, z=0] [L763] 3 x$w_buff1 = x$w_buff0 [L764] 3 x$w_buff0 = 2 [L765] 3 x$w_buff1_used = x$w_buff0_used [L766] 3 x$w_buff0_used = (_Bool)1 [L767] CALL 3 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L18] COND FALSE 3 !(!expression) [L767] RET 3 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L768] 3 x$r_buff1_thd0 = x$r_buff0_thd0 [L769] 3 x$r_buff1_thd1 = x$r_buff0_thd1 [L770] 3 x$r_buff1_thd2 = x$r_buff0_thd2 [L771] 3 x$r_buff1_thd3 = x$r_buff0_thd3 [L772] 3 x$r_buff0_thd2 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0, z=0] [L823] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, asdf=1, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t1403={5:0}, t1404={3:0}, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0, z=0] [L823] COND TRUE 0 asdf<2 [L823] FCALL, FORK 0 pthread_create(&t1404[asdf], ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, asdf=1, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1404[asdf], ((void *)0), P1, ((void *)0))=0, t1403={5:0}, t1404={3:0}, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0, z=0] [L763] 4 x$w_buff1 = x$w_buff0 [L764] 4 x$w_buff0 = 2 [L765] 4 x$w_buff1_used = x$w_buff0_used [L766] 4 x$w_buff0_used = (_Bool)1 [L767] CALL 4 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L18] COND TRUE 4 !expression [L18] 4 reach_error() VAL [\old(expression)=1, __unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, expression=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=2, x$w_buff1_used=1, x=0, y=0, z=0] - UnprovableResult [Line: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 823]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 821]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 825]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 150 locations, 6 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: 5.3s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 17 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 58 IncrementalHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 1 mSDtfsCounter, 58 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=87occurred in iteration=1, 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, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 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 10 procedures, 175 locations, 7 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: 187.7s, OverallIterations: 6, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 182.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 190 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 143 mSDsluCounter, 16 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 21 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 462 IncrementalHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 21 mSolverCounterUnsat, 16 mSDtfsCounter, 462 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=176occurred in iteration=5, InterpolantAutomatonStates: 18, 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, 0.3s InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 73 ConstructedInterpolants, 0 QuantifiedInterpolants, 167 SizeOfPredicates, 0 NumberOfNonLiveVariables, 288 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 23/31 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-08-03 17:44:22,985 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...