/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_safe022_tso_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 18:41:35,527 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 18:41:35,606 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 18:41:35,612 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 18:41:35,613 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 18:41:35,613 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 18:41:35,614 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 18:41:35,642 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 18:41:35,643 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 18:41:35,646 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 18:41:35,647 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 18:41:35,647 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 18:41:35,648 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 18:41:35,649 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 18:41:35,650 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 18:41:35,650 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 18:41:35,650 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 18:41:35,650 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 18:41:35,650 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 18:41:35,651 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 18:41:35,651 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 18:41:35,651 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 18:41:35,651 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 18:41:35,651 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 18:41:35,652 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 18:41:35,652 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 18:41:35,652 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 18:41:35,653 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 18:41:35,653 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 18:41:35,653 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 18:41:35,654 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 18:41:35,654 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 18:41:35,654 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 18:41:35,654 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 18:41:35,655 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 18:41:35,655 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 18:41:35,655 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 18:41:35,655 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 18:41:35,655 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 18:41:35,655 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 18:41:35,655 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 18:41:35,656 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 18:41:35,890 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 18:41:35,915 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 18:41:35,917 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 18:41:35,918 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 18:41:35,919 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 18:41:35,920 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe022_tso_bound2.i [2023-08-03 18:41:37,010 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 18:41:37,207 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 18:41:37,208 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe022_tso_bound2.i [2023-08-03 18:41:37,219 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5787990f/1687ae345f024306aff5f326cb3cd437/FLAG014e99451 [2023-08-03 18:41:37,231 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5787990f/1687ae345f024306aff5f326cb3cd437 [2023-08-03 18:41:37,233 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 18:41:37,234 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 18:41:37,235 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 18:41:37,235 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 18:41:37,238 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 18:41:37,239 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 06:41:37" (1/1) ... [2023-08-03 18:41:37,240 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a55e583 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:41:37, skipping insertion in model container [2023-08-03 18:41:37,240 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 06:41:37" (1/1) ... [2023-08-03 18:41:37,286 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 18:41:37,424 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_safe022_tso_bound2.i[945,958] [2023-08-03 18:41:37,602 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 18:41:37,614 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 18:41:37,626 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_safe022_tso_bound2.i[945,958] [2023-08-03 18:41:37,644 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 18:41:37,646 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 18:41:37,669 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 18:41:37,699 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 18:41:37,699 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 18:41:37,705 INFO L206 MainTranslator]: Completed translation [2023-08-03 18:41:37,705 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:41:37 WrapperNode [2023-08-03 18:41:37,705 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 18:41:37,707 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 18:41:37,707 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 18:41:37,707 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 18:41:37,712 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:41:37" (1/1) ... [2023-08-03 18:41:37,739 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:41:37" (1/1) ... [2023-08-03 18:41:37,761 INFO L138 Inliner]: procedures = 175, calls = 40, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 75 [2023-08-03 18:41:37,762 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 18:41:37,762 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 18:41:37,762 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 18:41:37,762 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 18:41:37,771 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:41:37" (1/1) ... [2023-08-03 18:41:37,771 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:41:37" (1/1) ... [2023-08-03 18:41:37,773 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:41:37" (1/1) ... [2023-08-03 18:41:37,773 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:41:37" (1/1) ... [2023-08-03 18:41:37,778 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:41:37" (1/1) ... [2023-08-03 18:41:37,780 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:41:37" (1/1) ... [2023-08-03 18:41:37,781 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:41:37" (1/1) ... [2023-08-03 18:41:37,782 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:41:37" (1/1) ... [2023-08-03 18:41:37,784 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 18:41:37,785 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 18:41:37,785 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 18:41:37,785 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 18:41:37,786 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:41:37" (1/1) ... [2023-08-03 18:41:37,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 18:41:37,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:41:37,812 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 18:41:37,830 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 18:41:37,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 18:41:37,860 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 18:41:37,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 18:41:37,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 18:41:37,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 18:41:37,862 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-03 18:41:37,862 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-03 18:41:37,862 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-03 18:41:37,862 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-03 18:41:37,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 18:41:37,863 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 18:41:37,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 18:41:37,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 18:41:37,864 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 18:41:38,013 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 18:41:38,015 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 18:41:38,185 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 18:41:38,190 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 18:41:38,191 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-03 18:41:38,193 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 06:41:38 BoogieIcfgContainer [2023-08-03 18:41:38,193 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 18:41:38,195 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 18:41:38,195 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 18:41:38,197 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 18:41:38,198 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 06:41:37" (1/3) ... [2023-08-03 18:41:38,198 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74e42891 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 06:41:38, skipping insertion in model container [2023-08-03 18:41:38,198 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:41:37" (2/3) ... [2023-08-03 18:41:38,199 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74e42891 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 06:41:38, skipping insertion in model container [2023-08-03 18:41:38,199 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 06:41:38" (3/3) ... [2023-08-03 18:41:38,200 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_safe022_tso_bound2.i [2023-08-03 18:41:38,207 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 18:41:38,215 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 18:41:38,215 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 18:41:38,215 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 18:41:38,259 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 18:41:38,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 82 transitions, 174 flow [2023-08-03 18:41:38,352 INFO L124 PetriNetUnfolderBase]: 14/193 cut-off events. [2023-08-03 18:41:38,352 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:41:38,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 205 conditions, 193 events. 14/193 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 558 event pairs, 0 based on Foata normal form. 0/169 useless extension candidates. Maximal degree in co-relation 110. Up to 8 conditions per place. [2023-08-03 18:41:38,357 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 82 transitions, 174 flow [2023-08-03 18:41:38,361 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 72 transitions, 154 flow [2023-08-03 18:41:38,364 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 18:41:38,371 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 74 places, 72 transitions, 154 flow [2023-08-03 18:41:38,374 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 74 places, 72 transitions, 154 flow [2023-08-03 18:41:38,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 72 transitions, 154 flow [2023-08-03 18:41:38,402 INFO L124 PetriNetUnfolderBase]: 10/153 cut-off events. [2023-08-03 18:41:38,402 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:41:38,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 153 events. 10/153 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 392 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 90. Up to 8 conditions per place. [2023-08-03 18:41:38,404 INFO L119 LiptonReduction]: Number of co-enabled transitions 876 [2023-08-03 18:41:40,122 INFO L134 LiptonReduction]: Checked pairs total: 1725 [2023-08-03 18:41:40,122 INFO L136 LiptonReduction]: Total number of compositions: 62 [2023-08-03 18:41:40,135 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 18:41:40,141 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;@3e6d3267, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 18:41:40,141 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 18:41:40,144 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 18:41:40,144 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2023-08-03 18:41:40,144 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:41:40,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:41:40,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 18:41:40,145 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 18:41:40,149 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:41:40,149 INFO L85 PathProgramCache]: Analyzing trace with hash 9127129, now seen corresponding path program 1 times [2023-08-03 18:41:40,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:41:40,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103358005] [2023-08-03 18:41:40,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:41:40,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:41:40,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:41:40,396 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 18:41:40,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:41:40,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103358005] [2023-08-03 18:41:40,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103358005] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:41:40,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 18:41:40,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 18:41:40,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075055094] [2023-08-03 18:41:40,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:41:40,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:41:40,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:41:40,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:41:40,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 18:41:40,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 144 [2023-08-03 18:41:40,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 19 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 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 18:41:40,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:41:40,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 144 [2023-08-03 18:41:40,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:41:40,536 INFO L124 PetriNetUnfolderBase]: 66/150 cut-off events. [2023-08-03 18:41:40,536 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:41:40,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 308 conditions, 150 events. 66/150 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 609 event pairs, 24 based on Foata normal form. 0/132 useless extension candidates. Maximal degree in co-relation 290. Up to 130 conditions per place. [2023-08-03 18:41:40,541 INFO L140 encePairwiseOnDemand]: 140/144 looper letters, 15 selfloop transitions, 2 changer transitions 0/21 dead transitions. [2023-08-03 18:41:40,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 21 transitions, 86 flow [2023-08-03 18:41:40,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:41:40,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:41:40,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 232 transitions. [2023-08-03 18:41:40,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5370370370370371 [2023-08-03 18:41:40,558 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 232 transitions. [2023-08-03 18:41:40,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 232 transitions. [2023-08-03 18:41:40,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:41:40,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 232 transitions. [2023-08-03 18:41:40,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:41:40,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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 18:41:40,573 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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 18:41:40,574 INFO L175 Difference]: Start difference. First operand has 23 places, 19 transitions, 48 flow. Second operand 3 states and 232 transitions. [2023-08-03 18:41:40,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 21 transitions, 86 flow [2023-08-03 18:41:40,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 21 transitions, 86 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 18:41:40,578 INFO L231 Difference]: Finished difference. Result has 26 places, 18 transitions, 54 flow [2023-08-03 18:41:40,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=54, PETRI_PLACES=26, PETRI_TRANSITIONS=18} [2023-08-03 18:41:40,584 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 3 predicate places. [2023-08-03 18:41:40,584 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 18 transitions, 54 flow [2023-08-03 18:41:40,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 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 18:41:40,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:41:40,585 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 18:41:40,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 18:41:40,585 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 18:41:40,588 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:41:40,588 INFO L85 PathProgramCache]: Analyzing trace with hash 188958619, now seen corresponding path program 1 times [2023-08-03 18:41:40,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:41:40,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504845847] [2023-08-03 18:41:40,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:41:40,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:41:40,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 18:41:40,619 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 18:41:40,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 18:41:40,653 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 18:41:40,654 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 18:41:40,655 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-03 18:41:40,657 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-03 18:41:40,657 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-03 18:41:40,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 18:41:40,658 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 18:41:40,661 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 18:41:40,662 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 18:41:40,690 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 18:41:40,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 96 transitions, 216 flow [2023-08-03 18:41:40,755 INFO L124 PetriNetUnfolderBase]: 30/412 cut-off events. [2023-08-03 18:41:40,755 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-03 18:41:40,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 445 conditions, 412 events. 30/412 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1716 event pairs, 0 based on Foata normal form. 0/361 useless extension candidates. Maximal degree in co-relation 296. Up to 18 conditions per place. [2023-08-03 18:41:40,758 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 96 transitions, 216 flow [2023-08-03 18:41:40,759 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 92 places, 86 transitions, 196 flow [2023-08-03 18:41:40,759 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 18:41:40,759 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 86 transitions, 196 flow [2023-08-03 18:41:40,760 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 92 places, 86 transitions, 196 flow [2023-08-03 18:41:40,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 86 transitions, 196 flow [2023-08-03 18:41:40,799 INFO L124 PetriNetUnfolderBase]: 21/322 cut-off events. [2023-08-03 18:41:40,800 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-03 18:41:40,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 355 conditions, 322 events. 21/322 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1182 event pairs, 0 based on Foata normal form. 0/289 useless extension candidates. Maximal degree in co-relation 236. Up to 18 conditions per place. [2023-08-03 18:41:40,807 INFO L119 LiptonReduction]: Number of co-enabled transitions 2088 [2023-08-03 18:41:42,346 INFO L134 LiptonReduction]: Checked pairs total: 4582 [2023-08-03 18:41:42,347 INFO L136 LiptonReduction]: Total number of compositions: 66 [2023-08-03 18:41:42,349 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 18:41:42,350 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;@3e6d3267, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 18:41:42,350 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 18:41:42,351 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 18:41:42,352 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-08-03 18:41:42,352 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:41:42,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:41:42,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 18:41:42,352 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 18:41:42,353 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:41:42,353 INFO L85 PathProgramCache]: Analyzing trace with hash 14516251, now seen corresponding path program 1 times [2023-08-03 18:41:42,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:41:42,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746980221] [2023-08-03 18:41:42,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:41:42,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:41:42,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:41:42,400 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 18:41:42,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:41:42,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746980221] [2023-08-03 18:41:42,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746980221] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:41:42,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 18:41:42,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 18:41:42,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651043024] [2023-08-03 18:41:42,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:41:42,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:41:42,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:41:42,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:41:42,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 18:41:42,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 162 [2023-08-03 18:41:42,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 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 18:41:42,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:41:42,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 162 [2023-08-03 18:41:42,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:41:42,684 INFO L124 PetriNetUnfolderBase]: 1674/2842 cut-off events. [2023-08-03 18:41:42,684 INFO L125 PetriNetUnfolderBase]: For 144/144 co-relation queries the response was YES. [2023-08-03 18:41:42,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5549 conditions, 2842 events. 1674/2842 cut-off events. For 144/144 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 16960 event pairs, 1140 based on Foata normal form. 0/2655 useless extension candidates. Maximal degree in co-relation 1582. Up to 2476 conditions per place. [2023-08-03 18:41:42,702 INFO L140 encePairwiseOnDemand]: 158/162 looper letters, 22 selfloop transitions, 2 changer transitions 0/32 dead transitions. [2023-08-03 18:41:42,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 32 transitions, 136 flow [2023-08-03 18:41:42,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:41:42,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:41:42,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 275 transitions. [2023-08-03 18:41:42,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.565843621399177 [2023-08-03 18:41:42,704 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 275 transitions. [2023-08-03 18:41:42,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 275 transitions. [2023-08-03 18:41:42,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:41:42,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 275 transitions. [2023-08-03 18:41:42,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 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 18:41:42,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 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 18:41:42,708 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 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 18:41:42,708 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 82 flow. Second operand 3 states and 275 transitions. [2023-08-03 18:41:42,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 32 transitions, 136 flow [2023-08-03 18:41:42,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 32 transitions, 132 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-03 18:41:42,710 INFO L231 Difference]: Finished difference. Result has 40 places, 29 transitions, 88 flow [2023-08-03 18:41:42,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=40, PETRI_TRANSITIONS=29} [2023-08-03 18:41:42,711 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 3 predicate places. [2023-08-03 18:41:42,711 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 29 transitions, 88 flow [2023-08-03 18:41:42,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 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 18:41:42,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:41:42,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:41:42,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 18:41:42,712 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 18:41:42,713 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:41:42,713 INFO L85 PathProgramCache]: Analyzing trace with hash 92868690, now seen corresponding path program 1 times [2023-08-03 18:41:42,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:41:42,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602481793] [2023-08-03 18:41:42,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:41:42,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:41:42,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:41:42,768 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 18:41:42,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:41:42,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602481793] [2023-08-03 18:41:42,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602481793] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:41:42,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629286033] [2023-08-03 18:41:42,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:41:42,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:41:42,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:41:42,777 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 18:41:42,808 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 18:41:42,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:41:42,858 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 18:41:42,859 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:41:42,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 18:41:42,871 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 18:41:42,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629286033] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:41:42,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 18:41:42,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 18:41:42,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583819694] [2023-08-03 18:41:42,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:41:42,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:41:42,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:41:42,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:41:42,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 18:41:42,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 162 [2023-08-03 18:41:42,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 29 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 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 18:41:42,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:41:42,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 162 [2023-08-03 18:41:42,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:41:43,122 INFO L124 PetriNetUnfolderBase]: 1646/2732 cut-off events. [2023-08-03 18:41:43,122 INFO L125 PetriNetUnfolderBase]: For 63/63 co-relation queries the response was YES. [2023-08-03 18:41:43,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5378 conditions, 2732 events. 1646/2732 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 16034 event pairs, 1120 based on Foata normal form. 0/2587 useless extension candidates. Maximal degree in co-relation 5343. Up to 2299 conditions per place. [2023-08-03 18:41:43,143 INFO L140 encePairwiseOnDemand]: 159/162 looper letters, 27 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2023-08-03 18:41:43,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 37 transitions, 162 flow [2023-08-03 18:41:43,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:41:43,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:41:43,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 278 transitions. [2023-08-03 18:41:43,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5720164609053497 [2023-08-03 18:41:43,146 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 278 transitions. [2023-08-03 18:41:43,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 278 transitions. [2023-08-03 18:41:43,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:41:43,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 278 transitions. [2023-08-03 18:41:43,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 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 18:41:43,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 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 18:41:43,150 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 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 18:41:43,150 INFO L175 Difference]: Start difference. First operand has 40 places, 29 transitions, 88 flow. Second operand 3 states and 278 transitions. [2023-08-03 18:41:43,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 37 transitions, 162 flow [2023-08-03 18:41:43,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 37 transitions, 160 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 18:41:43,154 INFO L231 Difference]: Finished difference. Result has 42 places, 30 transitions, 98 flow [2023-08-03 18:41:43,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=42, PETRI_TRANSITIONS=30} [2023-08-03 18:41:43,156 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 5 predicate places. [2023-08-03 18:41:43,156 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 30 transitions, 98 flow [2023-08-03 18:41:43,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 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 18:41:43,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:41:43,157 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 18:41:43,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-03 18:41:43,367 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 18:41:43,368 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 18:41:43,368 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:41:43,368 INFO L85 PathProgramCache]: Analyzing trace with hash 925809389, now seen corresponding path program 1 times [2023-08-03 18:41:43,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:41:43,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149316796] [2023-08-03 18:41:43,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:41:43,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:41:43,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:41:43,460 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 18:41:43,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:41:43,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149316796] [2023-08-03 18:41:43,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149316796] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:41:43,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496807365] [2023-08-03 18:41:43,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:41:43,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:41:43,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:41:43,463 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 18:41:43,465 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 18:41:43,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:41:43,521 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 18:41:43,522 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:41:43,558 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 18:41:43,558 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 18:41:43,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496807365] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:41:43,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 18:41:43,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 18:41:43,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972790315] [2023-08-03 18:41:43,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:41:43,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 18:41:43,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:41:43,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 18:41:43,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 18:41:43,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 162 [2023-08-03 18:41:43,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 30 transitions, 98 flow. Second operand has 5 states, 5 states have (on average 83.6) internal successors, (418), 5 states have internal predecessors, (418), 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 18:41:43,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:41:43,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 162 [2023-08-03 18:41:43,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:41:43,846 INFO L124 PetriNetUnfolderBase]: 1634/2715 cut-off events. [2023-08-03 18:41:43,846 INFO L125 PetriNetUnfolderBase]: For 351/351 co-relation queries the response was YES. [2023-08-03 18:41:43,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5671 conditions, 2715 events. 1634/2715 cut-off events. For 351/351 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 15851 event pairs, 744 based on Foata normal form. 9/2723 useless extension candidates. Maximal degree in co-relation 1600. Up to 2377 conditions per place. [2023-08-03 18:41:43,863 INFO L140 encePairwiseOnDemand]: 158/162 looper letters, 26 selfloop transitions, 4 changer transitions 0/37 dead transitions. [2023-08-03 18:41:43,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 37 transitions, 175 flow [2023-08-03 18:41:43,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 18:41:43,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 18:41:43,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 440 transitions. [2023-08-03 18:41:43,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5432098765432098 [2023-08-03 18:41:43,865 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 440 transitions. [2023-08-03 18:41:43,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 440 transitions. [2023-08-03 18:41:43,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:41:43,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 440 transitions. [2023-08-03 18:41:43,866 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 88.0) internal successors, (440), 5 states have internal predecessors, (440), 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 18:41:43,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 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 18:41:43,868 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 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 18:41:43,869 INFO L175 Difference]: Start difference. First operand has 42 places, 30 transitions, 98 flow. Second operand 5 states and 440 transitions. [2023-08-03 18:41:43,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 37 transitions, 175 flow [2023-08-03 18:41:43,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 37 transitions, 171 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 18:41:43,871 INFO L231 Difference]: Finished difference. Result has 45 places, 30 transitions, 114 flow [2023-08-03 18:41:43,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=114, PETRI_PLACES=45, PETRI_TRANSITIONS=30} [2023-08-03 18:41:43,871 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 8 predicate places. [2023-08-03 18:41:43,872 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 30 transitions, 114 flow [2023-08-03 18:41:43,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.6) internal successors, (418), 5 states have internal predecessors, (418), 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 18:41:43,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:41:43,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:41:43,881 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-03 18:41:44,077 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 18:41:44,077 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 18:41:44,078 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:41:44,078 INFO L85 PathProgramCache]: Analyzing trace with hash 18737935, now seen corresponding path program 1 times [2023-08-03 18:41:44,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:41:44,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677742740] [2023-08-03 18:41:44,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:41:44,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:41:44,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:41:44,135 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 18:41:44,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:41:44,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677742740] [2023-08-03 18:41:44,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677742740] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:41:44,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312289370] [2023-08-03 18:41:44,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:41:44,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:41:44,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:41:44,137 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 18:41:44,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-03 18:41:44,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:41:44,199 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 18:41:44,200 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:41:44,214 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 18:41:44,214 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 18:41:44,239 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 18:41:44,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312289370] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 18:41:44,239 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 18:41:44,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 18:41:44,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124394386] [2023-08-03 18:41:44,240 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 18:41:44,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 18:41:44,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:41:44,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 18:41:44,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 18:41:44,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 162 [2023-08-03 18:41:44,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 30 transitions, 114 flow. Second operand has 5 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 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 18:41:44,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:41:44,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 162 [2023-08-03 18:41:44,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:41:44,441 INFO L124 PetriNetUnfolderBase]: 1324/2144 cut-off events. [2023-08-03 18:41:44,441 INFO L125 PetriNetUnfolderBase]: For 318/318 co-relation queries the response was YES. [2023-08-03 18:41:44,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4484 conditions, 2144 events. 1324/2144 cut-off events. For 318/318 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 11600 event pairs, 558 based on Foata normal form. 3/2146 useless extension candidates. Maximal degree in co-relation 1600. Up to 1882 conditions per place. [2023-08-03 18:41:44,457 INFO L140 encePairwiseOnDemand]: 159/162 looper letters, 26 selfloop transitions, 3 changer transitions 0/36 dead transitions. [2023-08-03 18:41:44,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 36 transitions, 178 flow [2023-08-03 18:41:44,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 18:41:44,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 18:41:44,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 357 transitions. [2023-08-03 18:41:44,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5509259259259259 [2023-08-03 18:41:44,459 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 357 transitions. [2023-08-03 18:41:44,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 357 transitions. [2023-08-03 18:41:44,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:41:44,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 357 transitions. [2023-08-03 18:41:44,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 89.25) internal successors, (357), 4 states have internal predecessors, (357), 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 18:41:44,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 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 18:41:44,462 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 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 18:41:44,462 INFO L175 Difference]: Start difference. First operand has 45 places, 30 transitions, 114 flow. Second operand 4 states and 357 transitions. [2023-08-03 18:41:44,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 36 transitions, 178 flow [2023-08-03 18:41:44,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 36 transitions, 173 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-03 18:41:44,466 INFO L231 Difference]: Finished difference. Result has 46 places, 29 transitions, 105 flow [2023-08-03 18:41:44,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=105, PETRI_PLACES=46, PETRI_TRANSITIONS=29} [2023-08-03 18:41:44,469 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 9 predicate places. [2023-08-03 18:41:44,469 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 29 transitions, 105 flow [2023-08-03 18:41:44,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 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 18:41:44,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:41:44,469 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:41:44,479 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-03 18:41:44,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:41:44,675 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 18:41:44,675 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:41:44,675 INFO L85 PathProgramCache]: Analyzing trace with hash 2016855397, now seen corresponding path program 1 times [2023-08-03 18:41:44,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:41:44,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539203023] [2023-08-03 18:41:44,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:41:44,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:41:44,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:41:44,728 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 18:41:44,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:41:44,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539203023] [2023-08-03 18:41:44,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539203023] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:41:44,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994223258] [2023-08-03 18:41:44,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:41:44,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:41:44,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:41:44,734 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 18:41:44,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-03 18:41:44,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:41:44,800 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 18:41:44,801 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:41:44,816 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 18:41:44,816 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 18:41:44,834 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 18:41:44,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994223258] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 18:41:44,834 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 18:41:44,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 18:41:44,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315066323] [2023-08-03 18:41:44,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 18:41:44,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 18:41:44,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:41:44,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 18:41:44,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 18:41:44,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 162 [2023-08-03 18:41:44,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 29 transitions, 105 flow. Second operand has 5 states, 5 states have (on average 85.0) internal successors, (425), 5 states have internal predecessors, (425), 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 18:41:44,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:41:44,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 162 [2023-08-03 18:41:44,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:41:45,044 INFO L124 PetriNetUnfolderBase]: 1216/1888 cut-off events. [2023-08-03 18:41:45,045 INFO L125 PetriNetUnfolderBase]: For 250/250 co-relation queries the response was YES. [2023-08-03 18:41:45,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4042 conditions, 1888 events. 1216/1888 cut-off events. For 250/250 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 9467 event pairs, 400 based on Foata normal form. 27/1914 useless extension candidates. Maximal degree in co-relation 1439. Up to 943 conditions per place. [2023-08-03 18:41:45,054 INFO L140 encePairwiseOnDemand]: 158/162 looper letters, 34 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2023-08-03 18:41:45,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 45 transitions, 213 flow [2023-08-03 18:41:45,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 18:41:45,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 18:41:45,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 366 transitions. [2023-08-03 18:41:45,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5648148148148148 [2023-08-03 18:41:45,056 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 366 transitions. [2023-08-03 18:41:45,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 366 transitions. [2023-08-03 18:41:45,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:41:45,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 366 transitions. [2023-08-03 18:41:45,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 91.5) internal successors, (366), 4 states have internal predecessors, (366), 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 18:41:45,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 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 18:41:45,059 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 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 18:41:45,059 INFO L175 Difference]: Start difference. First operand has 46 places, 29 transitions, 105 flow. Second operand 4 states and 366 transitions. [2023-08-03 18:41:45,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 45 transitions, 213 flow [2023-08-03 18:41:45,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 45 transitions, 207 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 18:41:45,061 INFO L231 Difference]: Finished difference. Result has 48 places, 30 transitions, 119 flow [2023-08-03 18:41:45,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=119, PETRI_PLACES=48, PETRI_TRANSITIONS=30} [2023-08-03 18:41:45,061 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 11 predicate places. [2023-08-03 18:41:45,062 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 30 transitions, 119 flow [2023-08-03 18:41:45,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 85.0) internal successors, (425), 5 states have internal predecessors, (425), 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 18:41:45,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:41:45,062 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:41:45,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-03 18:41:45,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:41:45,268 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 18:41:45,268 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:41:45,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1292039741, now seen corresponding path program 1 times [2023-08-03 18:41:45,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:41:45,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152175383] [2023-08-03 18:41:45,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:41:45,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:41:45,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:41:45,334 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 18:41:45,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:41:45,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152175383] [2023-08-03 18:41:45,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152175383] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:41:45,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054189777] [2023-08-03 18:41:45,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:41:45,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:41:45,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:41:45,336 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 18:41:45,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-03 18:41:45,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:41:45,411 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 18:41:45,413 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:41:45,438 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 18:41:45,438 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 18:41:45,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1054189777] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:41:45,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 18:41:45,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 18:41:45,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894335226] [2023-08-03 18:41:45,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:41:45,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 18:41:45,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:41:45,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 18:41:45,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 18:41:45,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 162 [2023-08-03 18:41:45,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 30 transitions, 119 flow. Second operand has 5 states, 5 states have (on average 84.6) internal successors, (423), 5 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 18:41:45,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:41:45,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 162 [2023-08-03 18:41:45,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:41:45,599 INFO L124 PetriNetUnfolderBase]: 1000/1537 cut-off events. [2023-08-03 18:41:45,599 INFO L125 PetriNetUnfolderBase]: For 784/784 co-relation queries the response was YES. [2023-08-03 18:41:45,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3679 conditions, 1537 events. 1000/1537 cut-off events. For 784/784 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 7168 event pairs, 22 based on Foata normal form. 81/1617 useless extension candidates. Maximal degree in co-relation 1301. Up to 891 conditions per place. [2023-08-03 18:41:45,610 INFO L140 encePairwiseOnDemand]: 159/162 looper letters, 38 selfloop transitions, 3 changer transitions 0/47 dead transitions. [2023-08-03 18:41:45,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 47 transitions, 231 flow [2023-08-03 18:41:45,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 18:41:45,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 18:41:45,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 451 transitions. [2023-08-03 18:41:45,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5567901234567901 [2023-08-03 18:41:45,613 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 451 transitions. [2023-08-03 18:41:45,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 451 transitions. [2023-08-03 18:41:45,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:41:45,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 451 transitions. [2023-08-03 18:41:45,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.2) internal successors, (451), 5 states have internal predecessors, (451), 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 18:41:45,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 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 18:41:45,617 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 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 18:41:45,617 INFO L175 Difference]: Start difference. First operand has 48 places, 30 transitions, 119 flow. Second operand 5 states and 451 transitions. [2023-08-03 18:41:45,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 47 transitions, 231 flow [2023-08-03 18:41:45,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 47 transitions, 224 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-03 18:41:45,620 INFO L231 Difference]: Finished difference. Result has 48 places, 28 transitions, 108 flow [2023-08-03 18:41:45,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=108, PETRI_PLACES=48, PETRI_TRANSITIONS=28} [2023-08-03 18:41:45,622 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 11 predicate places. [2023-08-03 18:41:45,622 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 28 transitions, 108 flow [2023-08-03 18:41:45,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.6) internal successors, (423), 5 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 18:41:45,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:41:45,623 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:41:45,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-03 18:41:45,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:41:45,828 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 18:41:45,828 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:41:45,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1292039715, now seen corresponding path program 1 times [2023-08-03 18:41:45,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:41:45,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811331953] [2023-08-03 18:41:45,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:41:45,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:41:45,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:41:45,973 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 18:41:45,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:41:45,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811331953] [2023-08-03 18:41:45,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811331953] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:41:45,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 18:41:45,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 18:41:45,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559017431] [2023-08-03 18:41:45,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:41:45,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:41:45,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:41:45,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:41:45,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 18:41:45,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 162 [2023-08-03 18:41:45,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 28 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 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 18:41:45,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:41:45,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 162 [2023-08-03 18:41:45,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:41:46,154 INFO L124 PetriNetUnfolderBase]: 1738/2491 cut-off events. [2023-08-03 18:41:46,154 INFO L125 PetriNetUnfolderBase]: For 1648/1648 co-relation queries the response was YES. [2023-08-03 18:41:46,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5901 conditions, 2491 events. 1738/2491 cut-off events. For 1648/1648 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 11526 event pairs, 451 based on Foata normal form. 9/2499 useless extension candidates. Maximal degree in co-relation 2102. Up to 2242 conditions per place. [2023-08-03 18:41:46,168 INFO L140 encePairwiseOnDemand]: 158/162 looper letters, 32 selfloop transitions, 3 changer transitions 0/39 dead transitions. [2023-08-03 18:41:46,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 39 transitions, 221 flow [2023-08-03 18:41:46,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:41:46,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:41:46,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 276 transitions. [2023-08-03 18:41:46,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5679012345679012 [2023-08-03 18:41:46,170 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 276 transitions. [2023-08-03 18:41:46,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 276 transitions. [2023-08-03 18:41:46,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:41:46,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 276 transitions. [2023-08-03 18:41:46,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 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 18:41:46,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 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 18:41:46,172 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 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 18:41:46,172 INFO L175 Difference]: Start difference. First operand has 48 places, 28 transitions, 108 flow. Second operand 3 states and 276 transitions. [2023-08-03 18:41:46,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 39 transitions, 221 flow [2023-08-03 18:41:46,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 39 transitions, 213 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 18:41:46,174 INFO L231 Difference]: Finished difference. Result has 48 places, 30 transitions, 122 flow [2023-08-03 18:41:46,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=48, PETRI_TRANSITIONS=30} [2023-08-03 18:41:46,175 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 11 predicate places. [2023-08-03 18:41:46,175 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 30 transitions, 122 flow [2023-08-03 18:41:46,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 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 18:41:46,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:41:46,175 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:41:46,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-03 18:41:46,175 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 18:41:46,176 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:41:46,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1398524824, now seen corresponding path program 1 times [2023-08-03 18:41:46,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:41:46,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701041824] [2023-08-03 18:41:46,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:41:46,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:41:46,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:41:46,331 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 18:41:46,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:41:46,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701041824] [2023-08-03 18:41:46,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701041824] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:41:46,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 18:41:46,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 18:41:46,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582207572] [2023-08-03 18:41:46,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:41:46,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 18:41:46,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:41:46,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 18:41:46,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-03 18:41:46,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 162 [2023-08-03 18:41:46,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 30 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 81.25) internal successors, (325), 4 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:41:46,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:41:46,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 162 [2023-08-03 18:41:46,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:41:46,789 INFO L124 PetriNetUnfolderBase]: 4298/5979 cut-off events. [2023-08-03 18:41:46,789 INFO L125 PetriNetUnfolderBase]: For 3348/3348 co-relation queries the response was YES. [2023-08-03 18:41:46,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14971 conditions, 5979 events. 4298/5979 cut-off events. For 3348/3348 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 28607 event pairs, 408 based on Foata normal form. 112/6087 useless extension candidates. Maximal degree in co-relation 11111. Up to 3649 conditions per place. [2023-08-03 18:41:46,826 INFO L140 encePairwiseOnDemand]: 154/162 looper letters, 69 selfloop transitions, 15 changer transitions 0/86 dead transitions. [2023-08-03 18:41:46,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 86 transitions, 500 flow [2023-08-03 18:41:46,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 18:41:46,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 18:41:46,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 466 transitions. [2023-08-03 18:41:46,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5753086419753086 [2023-08-03 18:41:46,829 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 466 transitions. [2023-08-03 18:41:46,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 466 transitions. [2023-08-03 18:41:46,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:41:46,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 466 transitions. [2023-08-03 18:41:46,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 93.2) internal successors, (466), 5 states have internal predecessors, (466), 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 18:41:46,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 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 18:41:46,832 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 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 18:41:46,832 INFO L175 Difference]: Start difference. First operand has 48 places, 30 transitions, 122 flow. Second operand 5 states and 466 transitions. [2023-08-03 18:41:46,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 86 transitions, 500 flow [2023-08-03 18:41:46,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 86 transitions, 495 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 18:41:46,835 INFO L231 Difference]: Finished difference. Result has 54 places, 44 transitions, 242 flow [2023-08-03 18:41:46,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=242, PETRI_PLACES=54, PETRI_TRANSITIONS=44} [2023-08-03 18:41:46,836 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 17 predicate places. [2023-08-03 18:41:46,836 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 44 transitions, 242 flow [2023-08-03 18:41:46,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.25) internal successors, (325), 4 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:41:46,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:41:46,837 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:41:46,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-03 18:41:46,837 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 18:41:46,837 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:41:46,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1520063396, now seen corresponding path program 1 times [2023-08-03 18:41:46,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:41:46,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083001606] [2023-08-03 18:41:46,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:41:46,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:41:46,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:41:46,933 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-03 18:41:46,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:41:46,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083001606] [2023-08-03 18:41:46,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083001606] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:41:46,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634076857] [2023-08-03 18:41:46,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:41:46,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:41:46,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:41:46,935 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 18:41:46,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-03 18:41:47,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:41:47,017 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-03 18:41:47,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:41:47,049 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 18:41:47,049 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 18:41:47,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634076857] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:41:47,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 18:41:47,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-03 18:41:47,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311864130] [2023-08-03 18:41:47,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:41:47,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:41:47,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:41:47,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:41:47,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-03 18:41:47,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 162 [2023-08-03 18:41:47,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 44 transitions, 242 flow. Second operand has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 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 18:41:47,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:41:47,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 162 [2023-08-03 18:41:47,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:41:47,322 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([439] L2-1-->ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: (and (= v_~main$tmp_guard1~0_48 (ite (= (ite (not (and (= v_~__unbuffered_p1_EBX~0_34 0) (= v_~__unbuffered_p1_EAX~0_40 1))) 1 0) 0) 0 1)) (= |v_ULTIMATE.start___VERIFIER_assert_#in~expression#1_29| |v_ULTIMATE.start___VERIFIER_assert_~expression#1_37|) (= (mod v_~main$tmp_guard1~0_48 256) |v_ULTIMATE.start___VERIFIER_assert_#in~expression#1_29|) (= |v_ULTIMATE.start___VERIFIER_assert_~expression#1_37| 0)) InVars {~__unbuffered_p1_EBX~0=v_~__unbuffered_p1_EBX~0_34, ~__unbuffered_p1_EAX~0=v_~__unbuffered_p1_EAX~0_40} OutVars{ULTIMATE.start___VERIFIER_assert_~expression#1=|v_ULTIMATE.start___VERIFIER_assert_~expression#1_37|, ~__unbuffered_p1_EBX~0=v_~__unbuffered_p1_EBX~0_34, ULTIMATE.start___VERIFIER_assert_#in~expression#1=|v_ULTIMATE.start___VERIFIER_assert_#in~expression#1_29|, ~__unbuffered_p1_EAX~0=v_~__unbuffered_p1_EAX~0_40, ~main$tmp_guard1~0=v_~main$tmp_guard1~0_48} AuxVars[] AssignedVars[ULTIMATE.start___VERIFIER_assert_~expression#1, ULTIMATE.start___VERIFIER_assert_#in~expression#1, ~main$tmp_guard1~0][67], [P0Thread1of2ForFork1InUse, 350#(<= 2 |ULTIMATE.start_main_~asdf~1#1|), P0Thread2of2ForFork1InUse, P1Thread1of2ForFork0InUse, P1Thread2of2ForFork0InUse, Black: 417#(= ~x~0 0), 425#true, Black: 418#(or (not (= ~__unbuffered_p1_EBX~0 0)) (not (= ~__unbuffered_p1_EAX~0 1))), Black: 420#(and (= ~x~0 0) (or (not (= ~__unbuffered_p1_EBX~0 0)) (not (= ~__unbuffered_p1_EAX~0 1)))), Black: 131#(<= |ULTIMATE.start_main_~asdf~1#1| 0), Black: 106#(= 0 |ULTIMATE.start_main_~asdf~0#1|), Black: 140#(<= 1 |ULTIMATE.start_main_~asdf~0#1|), 141#(<= 2 |ULTIMATE.start_main_~asdf~0#1|), 78#L726true, 28#L741true, 76#ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTIONtrue, Black: 251#(<= |ULTIMATE.start_main_~asdf~1#1| 1), 31#L738true, 22#P0EXITtrue, 415#true, Black: 412#(or (not (= ~__unbuffered_p1_EBX~0 0)) (not (= ~__unbuffered_p1_EAX~0 1)))]) [2023-08-03 18:41:47,323 INFO L294 olderBase$Statistics]: this new event has 28 ancestors and is cut-off event [2023-08-03 18:41:47,323 INFO L297 olderBase$Statistics]: existing Event has 28 ancestors and is cut-off event [2023-08-03 18:41:47,323 INFO L297 olderBase$Statistics]: existing Event has 28 ancestors and is cut-off event [2023-08-03 18:41:47,323 INFO L297 olderBase$Statistics]: existing Event has 28 ancestors and is cut-off event [2023-08-03 18:41:47,338 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([439] L2-1-->ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: (and (= v_~main$tmp_guard1~0_48 (ite (= (ite (not (and (= v_~__unbuffered_p1_EBX~0_34 0) (= v_~__unbuffered_p1_EAX~0_40 1))) 1 0) 0) 0 1)) (= |v_ULTIMATE.start___VERIFIER_assert_#in~expression#1_29| |v_ULTIMATE.start___VERIFIER_assert_~expression#1_37|) (= (mod v_~main$tmp_guard1~0_48 256) |v_ULTIMATE.start___VERIFIER_assert_#in~expression#1_29|) (= |v_ULTIMATE.start___VERIFIER_assert_~expression#1_37| 0)) InVars {~__unbuffered_p1_EBX~0=v_~__unbuffered_p1_EBX~0_34, ~__unbuffered_p1_EAX~0=v_~__unbuffered_p1_EAX~0_40} OutVars{ULTIMATE.start___VERIFIER_assert_~expression#1=|v_ULTIMATE.start___VERIFIER_assert_~expression#1_37|, ~__unbuffered_p1_EBX~0=v_~__unbuffered_p1_EBX~0_34, ULTIMATE.start___VERIFIER_assert_#in~expression#1=|v_ULTIMATE.start___VERIFIER_assert_#in~expression#1_29|, ~__unbuffered_p1_EAX~0=v_~__unbuffered_p1_EAX~0_40, ~main$tmp_guard1~0=v_~main$tmp_guard1~0_48} AuxVars[] AssignedVars[ULTIMATE.start___VERIFIER_assert_~expression#1, ULTIMATE.start___VERIFIER_assert_#in~expression#1, ~main$tmp_guard1~0][67], [P0Thread1of2ForFork1InUse, 350#(<= 2 |ULTIMATE.start_main_~asdf~1#1|), P0Thread2of2ForFork1InUse, P1Thread1of2ForFork0InUse, P1Thread2of2ForFork0InUse, Black: 417#(= ~x~0 0), 425#true, Black: 418#(or (not (= ~__unbuffered_p1_EBX~0 0)) (not (= ~__unbuffered_p1_EAX~0 1))), Black: 420#(and (= ~x~0 0) (or (not (= ~__unbuffered_p1_EBX~0 0)) (not (= ~__unbuffered_p1_EAX~0 1)))), Black: 131#(<= |ULTIMATE.start_main_~asdf~1#1| 0), Black: 106#(= 0 |ULTIMATE.start_main_~asdf~0#1|), Black: 140#(<= 1 |ULTIMATE.start_main_~asdf~0#1|), 141#(<= 2 |ULTIMATE.start_main_~asdf~0#1|), 78#L726true, 28#L741true, 76#ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTIONtrue, Black: 251#(<= |ULTIMATE.start_main_~asdf~1#1| 1), 22#P0EXITtrue, 415#true, 68#L741true, Black: 412#(or (not (= ~__unbuffered_p1_EBX~0 0)) (not (= ~__unbuffered_p1_EAX~0 1)))]) [2023-08-03 18:41:47,339 INFO L294 olderBase$Statistics]: this new event has 29 ancestors and is cut-off event [2023-08-03 18:41:47,339 INFO L297 olderBase$Statistics]: existing Event has 29 ancestors and is cut-off event [2023-08-03 18:41:47,339 INFO L297 olderBase$Statistics]: existing Event has 29 ancestors and is cut-off event [2023-08-03 18:41:47,339 INFO L297 olderBase$Statistics]: existing Event has 29 ancestors and is cut-off event [2023-08-03 18:41:47,356 INFO L124 PetriNetUnfolderBase]: 2262/3483 cut-off events. [2023-08-03 18:41:47,356 INFO L125 PetriNetUnfolderBase]: For 4692/4793 co-relation queries the response was YES. [2023-08-03 18:41:47,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10825 conditions, 3483 events. 2262/3483 cut-off events. For 4692/4793 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 18958 event pairs, 425 based on Foata normal form. 48/3347 useless extension candidates. Maximal degree in co-relation 8110. Up to 2624 conditions per place. [2023-08-03 18:41:47,385 INFO L140 encePairwiseOnDemand]: 156/162 looper letters, 49 selfloop transitions, 5 changer transitions 0/68 dead transitions. [2023-08-03 18:41:47,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 68 transitions, 480 flow [2023-08-03 18:41:47,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:41:47,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:41:47,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 283 transitions. [2023-08-03 18:41:47,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5823045267489712 [2023-08-03 18:41:47,387 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 283 transitions. [2023-08-03 18:41:47,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 283 transitions. [2023-08-03 18:41:47,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:41:47,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 283 transitions. [2023-08-03 18:41:47,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 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 18:41:47,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 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 18:41:47,389 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 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 18:41:47,389 INFO L175 Difference]: Start difference. First operand has 54 places, 44 transitions, 242 flow. Second operand 3 states and 283 transitions. [2023-08-03 18:41:47,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 68 transitions, 480 flow [2023-08-03 18:41:47,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 68 transitions, 467 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 18:41:47,393 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 266 flow [2023-08-03 18:41:47,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=266, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2023-08-03 18:41:47,394 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 19 predicate places. [2023-08-03 18:41:47,394 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 266 flow [2023-08-03 18:41:47,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 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 18:41:47,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:41:47,395 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:41:47,402 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-03 18:41:47,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:41:47,600 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 18:41:47,600 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:41:47,600 INFO L85 PathProgramCache]: Analyzing trace with hash -5035148, now seen corresponding path program 1 times [2023-08-03 18:41:47,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:41:47,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274152380] [2023-08-03 18:41:47,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:41:47,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:41:47,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:41:47,721 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-03 18:41:47,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:41:47,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274152380] [2023-08-03 18:41:47,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274152380] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:41:47,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782472470] [2023-08-03 18:41:47,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:41:47,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:41:47,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:41:47,746 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 18:41:47,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-03 18:41:47,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:41:47,818 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-03 18:41:47,819 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:41:47,853 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-03 18:41:47,853 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 18:41:47,924 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-03 18:41:47,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782472470] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 18:41:47,925 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 18:41:47,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 3, 3] total 6 [2023-08-03 18:41:47,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925820359] [2023-08-03 18:41:47,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 18:41:47,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-03 18:41:47,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:41:47,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-03 18:41:47,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-03 18:41:47,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 162 [2023-08-03 18:41:47,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 266 flow. Second operand has 7 states, 7 states have (on average 80.42857142857143) internal successors, (563), 7 states have internal predecessors, (563), 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 18:41:47,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:41:47,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 162 [2023-08-03 18:41:47,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:41:48,321 INFO L124 PetriNetUnfolderBase]: 2645/4122 cut-off events. [2023-08-03 18:41:48,321 INFO L125 PetriNetUnfolderBase]: For 7027/7263 co-relation queries the response was YES. [2023-08-03 18:41:48,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14596 conditions, 4122 events. 2645/4122 cut-off events. For 7027/7263 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 23041 event pairs, 160 based on Foata normal form. 356/4440 useless extension candidates. Maximal degree in co-relation 11551. Up to 1398 conditions per place. [2023-08-03 18:41:48,347 INFO L140 encePairwiseOnDemand]: 151/162 looper letters, 101 selfloop transitions, 43 changer transitions 16/168 dead transitions. [2023-08-03 18:41:48,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 168 transitions, 1220 flow [2023-08-03 18:41:48,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-03 18:41:48,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-03 18:41:48,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 894 transitions. [2023-08-03 18:41:48,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5518518518518518 [2023-08-03 18:41:48,350 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 894 transitions. [2023-08-03 18:41:48,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 894 transitions. [2023-08-03 18:41:48,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:41:48,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 894 transitions. [2023-08-03 18:41:48,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 89.4) internal successors, (894), 10 states have internal predecessors, (894), 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 18:41:48,355 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 162.0) internal successors, (1782), 11 states have internal predecessors, (1782), 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 18:41:48,356 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 162.0) internal successors, (1782), 11 states have internal predecessors, (1782), 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 18:41:48,356 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 266 flow. Second operand 10 states and 894 transitions. [2023-08-03 18:41:48,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 168 transitions, 1220 flow [2023-08-03 18:41:48,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 168 transitions, 1201 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-03 18:41:48,365 INFO L231 Difference]: Finished difference. Result has 70 places, 76 transitions, 591 flow [2023-08-03 18:41:48,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=591, PETRI_PLACES=70, PETRI_TRANSITIONS=76} [2023-08-03 18:41:48,366 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 33 predicate places. [2023-08-03 18:41:48,366 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 76 transitions, 591 flow [2023-08-03 18:41:48,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 80.42857142857143) internal successors, (563), 7 states have internal predecessors, (563), 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 18:41:48,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:41:48,367 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:41:48,375 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-03 18:41:48,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:41:48,572 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 18:41:48,572 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:41:48,572 INFO L85 PathProgramCache]: Analyzing trace with hash -285333493, now seen corresponding path program 1 times [2023-08-03 18:41:48,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:41:48,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255720007] [2023-08-03 18:41:48,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:41:48,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:41:48,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:41:48,659 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-03 18:41:48,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:41:48,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255720007] [2023-08-03 18:41:48,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255720007] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:41:48,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930072809] [2023-08-03 18:41:48,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:41:48,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:41:48,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:41:48,662 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 18:41:48,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-03 18:41:48,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:41:48,737 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-03 18:41:48,739 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:41:48,839 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-03 18:41:48,839 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 18:41:48,974 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-03 18:41:48,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930072809] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 18:41:48,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 18:41:48,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 6, 6] total 14 [2023-08-03 18:41:48,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604726090] [2023-08-03 18:41:48,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 18:41:48,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-03 18:41:48,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:41:48,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-03 18:41:48,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2023-08-03 18:41:49,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 162 [2023-08-03 18:41:49,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 76 transitions, 591 flow. Second operand has 15 states, 15 states have (on average 79.33333333333333) internal successors, (1190), 15 states have internal predecessors, (1190), 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 18:41:49,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:41:49,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 162 [2023-08-03 18:41:49,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:41:49,895 INFO L124 PetriNetUnfolderBase]: 4400/6801 cut-off events. [2023-08-03 18:41:49,895 INFO L125 PetriNetUnfolderBase]: For 24561/24863 co-relation queries the response was YES. [2023-08-03 18:41:49,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30416 conditions, 6801 events. 4400/6801 cut-off events. For 24561/24863 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 42460 event pairs, 164 based on Foata normal form. 352/7016 useless extension candidates. Maximal degree in co-relation 30311. Up to 2655 conditions per place. [2023-08-03 18:41:49,939 INFO L140 encePairwiseOnDemand]: 151/162 looper letters, 129 selfloop transitions, 52 changer transitions 88/279 dead transitions. [2023-08-03 18:41:49,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 279 transitions, 2577 flow [2023-08-03 18:41:49,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-03 18:41:49,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-03 18:41:49,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1318 transitions. [2023-08-03 18:41:49,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5423868312757202 [2023-08-03 18:41:49,943 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1318 transitions. [2023-08-03 18:41:49,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1318 transitions. [2023-08-03 18:41:49,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:41:49,944 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1318 transitions. [2023-08-03 18:41:49,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 87.86666666666666) internal successors, (1318), 15 states have internal predecessors, (1318), 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 18:41:49,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 162.0) internal successors, (2592), 16 states have internal predecessors, (2592), 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 18:41:49,951 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 162.0) internal successors, (2592), 16 states have internal predecessors, (2592), 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 18:41:49,951 INFO L175 Difference]: Start difference. First operand has 70 places, 76 transitions, 591 flow. Second operand 15 states and 1318 transitions. [2023-08-03 18:41:49,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 279 transitions, 2577 flow [2023-08-03 18:41:50,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 279 transitions, 2451 flow, removed 36 selfloop flow, removed 3 redundant places. [2023-08-03 18:41:50,140 INFO L231 Difference]: Finished difference. Result has 90 places, 107 transitions, 960 flow [2023-08-03 18:41:50,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=551, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=960, PETRI_PLACES=90, PETRI_TRANSITIONS=107} [2023-08-03 18:41:50,141 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 53 predicate places. [2023-08-03 18:41:50,141 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 107 transitions, 960 flow [2023-08-03 18:41:50,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 79.33333333333333) internal successors, (1190), 15 states have internal predecessors, (1190), 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 18:41:50,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:41:50,142 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:41:50,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-03 18:41:50,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-03 18:41:50,347 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 18:41:50,347 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:41:50,347 INFO L85 PathProgramCache]: Analyzing trace with hash -422520286, now seen corresponding path program 1 times [2023-08-03 18:41:50,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:41:50,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329868732] [2023-08-03 18:41:50,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:41:50,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:41:50,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 18:41:50,384 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 18:41:50,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 18:41:50,403 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 18:41:50,403 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 18:41:50,404 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-03 18:41:50,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-03 18:41:50,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-03 18:41:50,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-03 18:41:50,404 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:41:50,407 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 18:41:50,408 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 18:41:50,456 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 06:41:50 BasicIcfg [2023-08-03 18:41:50,457 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 18:41:50,457 INFO L158 Benchmark]: Toolchain (without parser) took 13223.11ms. Allocated memory was 350.2MB in the beginning and 639.6MB in the end (delta: 289.4MB). Free memory was 294.1MB in the beginning and 593.2MB in the end (delta: -299.1MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 18:41:50,457 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 350.2MB. Free memory was 303.2MB in the beginning and 303.2MB in the end (delta: 72.8kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 18:41:50,458 INFO L158 Benchmark]: CACSL2BoogieTranslator took 470.74ms. Allocated memory is still 350.2MB. Free memory was 293.0MB in the beginning and 273.1MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-03 18:41:50,458 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.19ms. Allocated memory is still 350.2MB. Free memory was 273.1MB in the beginning and 271.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 18:41:50,458 INFO L158 Benchmark]: Boogie Preprocessor took 22.35ms. Allocated memory is still 350.2MB. Free memory was 271.0MB in the beginning and 270.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 18:41:50,458 INFO L158 Benchmark]: RCFGBuilder took 407.65ms. Allocated memory is still 350.2MB. Free memory was 270.0MB in the beginning and 255.3MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-03 18:41:50,458 INFO L158 Benchmark]: TraceAbstraction took 12262.20ms. Allocated memory was 350.2MB in the beginning and 639.6MB in the end (delta: 289.4MB). Free memory was 254.2MB in the beginning and 593.2MB in the end (delta: -338.9MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 18:41:50,462 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 350.2MB. Free memory was 303.2MB in the beginning and 303.2MB in the end (delta: 72.8kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 470.74ms. Allocated memory is still 350.2MB. Free memory was 293.0MB in the beginning and 273.1MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 55.19ms. Allocated memory is still 350.2MB. Free memory was 273.1MB in the beginning and 271.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 22.35ms. Allocated memory is still 350.2MB. Free memory was 271.0MB in the beginning and 270.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 407.65ms. Allocated memory is still 350.2MB. Free memory was 270.0MB in the beginning and 255.3MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 12262.20ms. Allocated memory was 350.2MB in the beginning and 639.6MB in the end (delta: 289.4MB). Free memory was 254.2MB in the beginning and 593.2MB in the end (delta: -338.9MB). There was no memory consumed. 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: 1.7s, 74 PlacesBefore, 23 PlacesAfterwards, 72 TransitionsBefore, 19 TransitionsAfterwards, 876 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 11 ConcurrentYvCompositions, 2 ChoiceCompositions, 62 TotalNumberOfCompositions, 1725 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1068, independent: 1009, independent conditional: 0, independent unconditional: 1009, dependent: 59, dependent conditional: 0, dependent unconditional: 59, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 482, independent: 467, independent conditional: 0, independent unconditional: 467, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1068, independent: 542, independent conditional: 0, independent unconditional: 542, dependent: 44, dependent conditional: 0, dependent unconditional: 44, unknown: 482, unknown conditional: 0, unknown unconditional: 482] , Statistics on independence cache: Total cache size (in pairs): 44, Positive cache size: 39, Positive conditional cache size: 0, Positive unconditional cache size: 39, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.6s, 92 PlacesBefore, 37 PlacesAfterwards, 86 TransitionsBefore, 29 TransitionsAfterwards, 2088 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 11 ConcurrentYvCompositions, 2 ChoiceCompositions, 66 TotalNumberOfCompositions, 4582 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2306, independent: 2200, independent conditional: 0, independent unconditional: 2200, dependent: 106, dependent conditional: 0, dependent unconditional: 106, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1090, independent: 1057, independent conditional: 0, independent unconditional: 1057, dependent: 33, dependent conditional: 0, dependent unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2306, independent: 1143, independent conditional: 0, independent unconditional: 1143, dependent: 73, dependent conditional: 0, dependent unconditional: 73, unknown: 1090, unknown conditional: 0, unknown unconditional: 1090] , Statistics on independence cache: Total cache size (in pairs): 108, Positive cache size: 95, Positive conditional cache size: 0, Positive unconditional cache size: 95, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13, 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: [L708] 0 int __unbuffered_cnt = 0; [L710] 0 int __unbuffered_p1_EAX = 0; [L712] 0 int __unbuffered_p1_EBX = 0; [L713] 0 _Bool main$tmp_guard0; [L714] 0 _Bool main$tmp_guard1; [L716] 0 int x = 0; [L718] 0 int y = 0; [L760] 0 pthread_t t2317[2]; [L761] 0 int asdf=0; VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, asdf=0, main$tmp_guard0=0, main$tmp_guard1=0, t2317={5:0}, x=0, y=0] [L761] COND TRUE 0 asdf<2 [L761] FCALL, FORK 0 pthread_create(&t2317[asdf], ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, asdf=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2317[asdf], ((void *)0), P0, ((void *)0))=-3, t2317={5:0}, x=0, y=0] [L761] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, asdf=1, main$tmp_guard0=0, main$tmp_guard1=0, t2317={5:0}, x=0, y=0] [L761] COND TRUE 0 asdf<2 [L761] FCALL, FORK 0 pthread_create(&t2317[asdf], ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, asdf=1, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2317[asdf], ((void *)0), P0, ((void *)0))=-2, t2317={5:0}, x=0, y=0] [L761] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t2317={5:0}, x=0, y=0] [L761] COND FALSE 0 !(asdf<2) [L762] 0 pthread_t t2318[2]; [L763] 0 int asdf=0; VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, asdf=0, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t2317={5:0}, t2318={3:0}, x=0, y=0] [L763] COND TRUE 0 asdf<2 [L763] FCALL, FORK 0 pthread_create(&t2318[asdf], ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, asdf=0, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2318[asdf], ((void *)0), P1, ((void *)0))=-1, t2317={5:0}, t2318={3:0}, x=0, y=0] [L763] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, asdf=1, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t2317={5:0}, t2318={3:0}, x=0, y=0] [L763] COND TRUE 0 asdf<2 [L763] FCALL, FORK 0 pthread_create(&t2318[asdf], ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, asdf=1, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2318[asdf], ((void *)0), P1, ((void *)0))=0, t2317={5:0}, t2318={3:0}, x=0, y=0] [L763] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, asdf=2, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t2317={5:0}, t2318={3:0}, x=0, y=0] [L722] 1 y = 1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=1] [L725] 1 x = 1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L722] 2 y = 1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L725] 2 x = 1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L730] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L732] 1 return 0; [L730] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L732] 2 return 0; [L737] 3 __unbuffered_p1_EAX = x VAL [\result={0:0}, __unbuffered_cnt=2, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L763] COND FALSE 0 !(asdf<2) [L765] 0 main$tmp_guard0 = __unbuffered_cnt == 2 [L767] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) VAL [\old(cond)=1, \result={0:0}, __unbuffered_cnt=2, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, cond=1, main$tmp_guard0=1, main$tmp_guard1=0, x=1, y=1] [L767] RET 0 assume_abort_if_not(main$tmp_guard0) [L771] 0 main$tmp_guard1 = !(__unbuffered_p1_EAX == 1 && __unbuffered_p1_EBX == 0) [L773] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\old(expression)=0, \result={0:0}, __unbuffered_cnt=2, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, expression=0, main$tmp_guard0=1, main$tmp_guard1=0, x=1, y=1] - UnprovableResult [Line: 761]: 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: 763]: 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 5 procedures, 93 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.4s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 34 IncrementalHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 1 mSDtfsCounter, 34 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=54occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 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 7 procedures, 107 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 9.7s, OverallIterations: 12, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 623 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 543 mSDsluCounter, 99 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 75 mSDsCounter, 97 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1317 IncrementalHoareTripleChecker+Invalid, 1414 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 97 mSolverCounterUnsat, 24 mSDtfsCounter, 1317 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 254 GetRequests, 190 SyntacticMatches, 5 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=960occurred in iteration=11, InterpolantAutomatonStates: 60, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 348 NumberOfCodeBlocks, 348 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 375 ConstructedInterpolants, 0 QuantifiedInterpolants, 1225 SizeOfPredicates, 6 NumberOfNonLiveVariables, 1087 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 23 InterpolantComputations, 7 PerfectInterpolantSequences, 156/193 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 18:41:50,479 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...