/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_mix041_power.oepc_pso.oepc_rmo.oepc_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 17:33:23,078 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 17:33:23,129 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 17:33:23,133 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 17:33:23,133 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 17:33:23,134 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 17:33:23,134 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 17:33:23,152 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 17:33:23,152 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 17:33:23,153 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 17:33:23,153 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 17:33:23,153 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 17:33:23,154 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 17:33:23,154 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 17:33:23,155 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 17:33:23,155 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 17:33:23,155 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 17:33:23,156 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 17:33:23,156 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 17:33:23,156 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 17:33:23,157 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 17:33:23,157 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 17:33:23,157 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 17:33:23,158 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 17:33:23,158 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 17:33:23,158 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 17:33:23,158 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 17:33:23,159 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 17:33:23,159 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 17:33:23,159 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 17:33:23,159 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 17:33:23,160 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 17:33:23,160 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 17:33:23,160 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 17:33:23,160 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 17:33:23,160 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 17:33:23,161 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 17:33:23,161 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 17:33:23,161 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 17:33:23,161 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 17:33:23,161 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 17:33:23,162 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 17:33:23,372 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 17:33:23,398 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 17:33:23,400 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 17:33:23,401 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 17:33:23,401 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 17:33:23,402 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix041_power.oepc_pso.oepc_rmo.oepc_bound2.i [2023-08-03 17:33:24,577 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 17:33:24,786 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 17:33:24,787 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix041_power.oepc_pso.oepc_rmo.oepc_bound2.i [2023-08-03 17:33:24,806 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1b352b9c/666a4d5949634a23bf32f9abe95fa10a/FLAG91b9845d6 [2023-08-03 17:33:24,818 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1b352b9c/666a4d5949634a23bf32f9abe95fa10a [2023-08-03 17:33:24,820 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 17:33:24,821 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 17:33:24,822 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 17:33:24,822 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 17:33:24,825 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 17:33:24,825 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 05:33:24" (1/1) ... [2023-08-03 17:33:24,826 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70cdab8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:33:24, skipping insertion in model container [2023-08-03 17:33:24,826 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 05:33:24" (1/1) ... [2023-08-03 17:33:24,866 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 17:33:25,002 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_mix041_power.oepc_pso.oepc_rmo.oepc_bound2.i[969,982] [2023-08-03 17:33:25,168 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 17:33:25,180 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 17:33:25,190 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_mix041_power.oepc_pso.oepc_rmo.oepc_bound2.i[969,982] [2023-08-03 17:33:25,204 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 17:33:25,206 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 17:33:25,234 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 17:33:25,261 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 17:33:25,261 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 17:33:25,267 INFO L206 MainTranslator]: Completed translation [2023-08-03 17:33:25,268 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:33:25 WrapperNode [2023-08-03 17:33:25,268 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 17:33:25,269 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 17:33:25,269 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 17:33:25,269 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 17:33:25,276 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:33:25" (1/1) ... [2023-08-03 17:33:25,288 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:33:25" (1/1) ... [2023-08-03 17:33:25,310 INFO L138 Inliner]: procedures = 175, calls = 45, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 130 [2023-08-03 17:33:25,311 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 17:33:25,311 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 17:33:25,311 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 17:33:25,311 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 17:33:25,319 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:33:25" (1/1) ... [2023-08-03 17:33:25,319 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:33:25" (1/1) ... [2023-08-03 17:33:25,323 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:33:25" (1/1) ... [2023-08-03 17:33:25,323 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:33:25" (1/1) ... [2023-08-03 17:33:25,331 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:33:25" (1/1) ... [2023-08-03 17:33:25,338 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:33:25" (1/1) ... [2023-08-03 17:33:25,340 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:33:25" (1/1) ... [2023-08-03 17:33:25,341 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:33:25" (1/1) ... [2023-08-03 17:33:25,344 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 17:33:25,345 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 17:33:25,345 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 17:33:25,345 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 17:33:25,346 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:33:25" (1/1) ... [2023-08-03 17:33:25,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 17:33:25,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 17:33:25,391 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-03 17:33:25,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-03 17:33:25,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 17:33:25,435 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 17:33:25,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 17:33:25,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 17:33:25,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 17:33:25,437 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-03 17:33:25,437 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-03 17:33:25,438 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-03 17:33:25,438 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-03 17:33:25,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 17:33:25,438 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 17:33:25,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 17:33:25,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 17:33:25,440 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 17:33:25,599 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 17:33:25,601 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 17:33:25,919 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 17:33:26,042 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 17:33:26,042 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-03 17:33:26,045 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 05:33:26 BoogieIcfgContainer [2023-08-03 17:33:26,045 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 17:33:26,048 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 17:33:26,049 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 17:33:26,051 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 17:33:26,052 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 05:33:24" (1/3) ... [2023-08-03 17:33:26,053 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c88f9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 05:33:26, skipping insertion in model container [2023-08-03 17:33:26,053 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:33:25" (2/3) ... [2023-08-03 17:33:26,054 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c88f9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 05:33:26, skipping insertion in model container [2023-08-03 17:33:26,055 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 05:33:26" (3/3) ... [2023-08-03 17:33:26,056 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_mix041_power.oepc_pso.oepc_rmo.oepc_bound2.i [2023-08-03 17:33:26,064 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 17:33:26,071 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 17:33:26,072 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-03 17:33:26,072 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 17:33:26,119 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 17:33:26,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 105 transitions, 220 flow [2023-08-03 17:33:26,229 INFO L124 PetriNetUnfolderBase]: 14/222 cut-off events. [2023-08-03 17:33:26,230 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:33:26,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234 conditions, 222 events. 14/222 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 631 event pairs, 0 based on Foata normal form. 0/197 useless extension candidates. Maximal degree in co-relation 131. Up to 8 conditions per place. [2023-08-03 17:33:26,238 INFO L82 GeneralOperation]: Start removeDead. Operand has 106 places, 105 transitions, 220 flow [2023-08-03 17:33:26,246 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 106 places, 105 transitions, 220 flow [2023-08-03 17:33:26,249 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 17:33:26,264 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 106 places, 105 transitions, 220 flow [2023-08-03 17:33:26,267 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 106 places, 105 transitions, 220 flow [2023-08-03 17:33:26,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 105 transitions, 220 flow [2023-08-03 17:33:26,310 INFO L124 PetriNetUnfolderBase]: 14/222 cut-off events. [2023-08-03 17:33:26,310 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:33:26,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234 conditions, 222 events. 14/222 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 631 event pairs, 0 based on Foata normal form. 0/197 useless extension candidates. Maximal degree in co-relation 131. Up to 8 conditions per place. [2023-08-03 17:33:26,313 INFO L119 LiptonReduction]: Number of co-enabled transitions 1642 [2023-08-03 17:33:29,185 INFO L134 LiptonReduction]: Checked pairs total: 4215 [2023-08-03 17:33:29,185 INFO L136 LiptonReduction]: Total number of compositions: 93 [2023-08-03 17:33:29,197 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 17:33:29,202 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;@49c99bda, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 17:33:29,202 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-03 17:33:29,205 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 17:33:29,206 INFO L124 PetriNetUnfolderBase]: 1/11 cut-off events. [2023-08-03 17:33:29,206 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:33:29,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:33:29,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 17:33:29,207 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 17:33:29,211 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:33:29,211 INFO L85 PathProgramCache]: Analyzing trace with hash 14578095, now seen corresponding path program 1 times [2023-08-03 17:33:29,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:33:29,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237739747] [2023-08-03 17:33:29,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:33:29,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:33:29,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:33:29,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 17:33:29,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:33:29,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237739747] [2023-08-03 17:33:29,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237739747] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:33:29,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:33:29,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 17:33:29,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664732835] [2023-08-03 17:33:29,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:33:29,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:33:29,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:33:29,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:33:29,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:33:29,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 198 [2023-08-03 17:33:29,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 27 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:33:29,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:33:29,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 198 [2023-08-03 17:33:29,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:33:29,815 INFO L124 PetriNetUnfolderBase]: 325/669 cut-off events. [2023-08-03 17:33:29,815 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-03 17:33:29,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1296 conditions, 669 events. 325/669 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3467 event pairs, 64 based on Foata normal form. 30/602 useless extension candidates. Maximal degree in co-relation 1103. Up to 430 conditions per place. [2023-08-03 17:33:29,825 INFO L140 encePairwiseOnDemand]: 194/198 looper letters, 31 selfloop transitions, 2 changer transitions 4/41 dead transitions. [2023-08-03 17:33:29,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 41 transitions, 169 flow [2023-08-03 17:33:29,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:33:29,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:33:29,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 313 transitions. [2023-08-03 17:33:29,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5269360269360269 [2023-08-03 17:33:29,845 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 313 transitions. [2023-08-03 17:33:29,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 313 transitions. [2023-08-03 17:33:29,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:33:29,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 313 transitions. [2023-08-03 17:33:29,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:33:29,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 198.0) internal successors, (792), 4 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:33:29,859 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 198.0) internal successors, (792), 4 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:33:29,861 INFO L175 Difference]: Start difference. First operand has 31 places, 27 transitions, 64 flow. Second operand 3 states and 313 transitions. [2023-08-03 17:33:29,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 41 transitions, 169 flow [2023-08-03 17:33:29,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 41 transitions, 169 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 17:33:29,865 INFO L231 Difference]: Finished difference. Result has 32 places, 23 transitions, 60 flow [2023-08-03 17:33:29,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=32, PETRI_TRANSITIONS=23} [2023-08-03 17:33:29,869 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2023-08-03 17:33:29,869 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 23 transitions, 60 flow [2023-08-03 17:33:29,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:33:29,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:33:29,870 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 17:33:29,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 17:33:29,870 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 17:33:29,871 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:33:29,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1124706347, now seen corresponding path program 1 times [2023-08-03 17:33:29,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:33:29,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461081287] [2023-08-03 17:33:29,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:33:29,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:33:29,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:33:29,898 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 17:33:29,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:33:29,921 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 17:33:29,922 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 17:33:29,923 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-08-03 17:33:29,924 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-08-03 17:33:29,925 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2023-08-03 17:33:29,925 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-08-03 17:33:29,925 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-08-03 17:33:29,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 17:33:29,925 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 17:33:29,927 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 17:33:29,927 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 17:33:29,949 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 17:33:29,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 124 transitions, 272 flow [2023-08-03 17:33:29,993 INFO L124 PetriNetUnfolderBase]: 30/460 cut-off events. [2023-08-03 17:33:29,993 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-03 17:33:29,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 493 conditions, 460 events. 30/460 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1975 event pairs, 0 based on Foata normal form. 0/407 useless extension candidates. Maximal degree in co-relation 332. Up to 18 conditions per place. [2023-08-03 17:33:29,995 INFO L82 GeneralOperation]: Start removeDead. Operand has 129 places, 124 transitions, 272 flow [2023-08-03 17:33:29,996 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 129 places, 124 transitions, 272 flow [2023-08-03 17:33:29,997 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 17:33:29,997 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 129 places, 124 transitions, 272 flow [2023-08-03 17:33:29,997 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 129 places, 124 transitions, 272 flow [2023-08-03 17:33:29,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 124 transitions, 272 flow [2023-08-03 17:33:30,038 INFO L124 PetriNetUnfolderBase]: 30/460 cut-off events. [2023-08-03 17:33:30,038 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-03 17:33:30,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 493 conditions, 460 events. 30/460 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1975 event pairs, 0 based on Foata normal form. 0/407 useless extension candidates. Maximal degree in co-relation 332. Up to 18 conditions per place. [2023-08-03 17:33:30,046 INFO L119 LiptonReduction]: Number of co-enabled transitions 3928 [2023-08-03 17:33:32,813 INFO L134 LiptonReduction]: Checked pairs total: 13237 [2023-08-03 17:33:32,813 INFO L136 LiptonReduction]: Total number of compositions: 97 [2023-08-03 17:33:32,815 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 17:33:32,816 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;@49c99bda, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 17:33:32,816 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-03 17:33:32,821 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 17:33:32,821 INFO L124 PetriNetUnfolderBase]: 1/11 cut-off events. [2023-08-03 17:33:32,821 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:33:32,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:33:32,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 17:33:32,822 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 17:33:32,822 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:33:32,822 INFO L85 PathProgramCache]: Analyzing trace with hash 21962261, now seen corresponding path program 1 times [2023-08-03 17:33:32,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:33:32,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593740352] [2023-08-03 17:33:32,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:33:32,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:33:32,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:33:32,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 17:33:32,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:33:32,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593740352] [2023-08-03 17:33:32,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593740352] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:33:32,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:33:32,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 17:33:32,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041855749] [2023-08-03 17:33:32,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:33:32,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:33:32,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:33:32,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:33:32,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:33:32,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 221 [2023-08-03 17:33:32,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 43 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:33:32,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:33:32,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 221 [2023-08-03 17:33:32,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:33:36,405 INFO L124 PetriNetUnfolderBase]: 20420/29914 cut-off events. [2023-08-03 17:33:36,406 INFO L125 PetriNetUnfolderBase]: For 443/443 co-relation queries the response was YES. [2023-08-03 17:33:36,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58419 conditions, 29914 events. 20420/29914 cut-off events. For 443/443 co-relation queries the response was YES. Maximal size of possible extension queue 1173. Compared 206856 event pairs, 3926 based on Foata normal form. 837/26022 useless extension candidates. Maximal degree in co-relation 49655. Up to 26049 conditions per place. [2023-08-03 17:33:36,605 INFO L140 encePairwiseOnDemand]: 215/221 looper letters, 53 selfloop transitions, 3 changer transitions 0/66 dead transitions. [2023-08-03 17:33:36,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 66 transitions, 281 flow [2023-08-03 17:33:36,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:33:36,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:33:36,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 369 transitions. [2023-08-03 17:33:36,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5565610859728507 [2023-08-03 17:33:36,608 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 369 transitions. [2023-08-03 17:33:36,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 369 transitions. [2023-08-03 17:33:36,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:33:36,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 369 transitions. [2023-08-03 17:33:36,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:33:36,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:33:36,612 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:33:36,612 INFO L175 Difference]: Start difference. First operand has 51 places, 43 transitions, 110 flow. Second operand 3 states and 369 transitions. [2023-08-03 17:33:36,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 66 transitions, 281 flow [2023-08-03 17:33:36,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 66 transitions, 277 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-03 17:33:36,615 INFO L231 Difference]: Finished difference. Result has 54 places, 44 transitions, 125 flow [2023-08-03 17:33:36,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=125, PETRI_PLACES=54, PETRI_TRANSITIONS=44} [2023-08-03 17:33:36,616 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 3 predicate places. [2023-08-03 17:33:36,616 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 44 transitions, 125 flow [2023-08-03 17:33:36,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:33:36,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:33:36,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-03 17:33:36,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 17:33:36,617 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 17:33:36,617 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:33:36,617 INFO L85 PathProgramCache]: Analyzing trace with hash -374105487, now seen corresponding path program 1 times [2023-08-03 17:33:36,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:33:36,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091694287] [2023-08-03 17:33:36,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:33:36,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:33:36,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:33:36,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 17:33:36,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:33:36,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091694287] [2023-08-03 17:33:36,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091694287] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:33:36,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:33:36,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 17:33:36,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358990087] [2023-08-03 17:33:36,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:33:36,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:33:36,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:33:36,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:33:36,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:33:36,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 221 [2023-08-03 17:33:36,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 44 transitions, 125 flow. Second operand has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:33:36,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:33:36,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 221 [2023-08-03 17:33:36,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:33:39,957 INFO L124 PetriNetUnfolderBase]: 20048/29237 cut-off events. [2023-08-03 17:33:39,958 INFO L125 PetriNetUnfolderBase]: For 2909/2909 co-relation queries the response was YES. [2023-08-03 17:33:40,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62198 conditions, 29237 events. 20048/29237 cut-off events. For 2909/2909 co-relation queries the response was YES. Maximal size of possible extension queue 1128. Compared 194240 event pairs, 15274 based on Foata normal form. 0/24502 useless extension candidates. Maximal degree in co-relation 40340. Up to 27351 conditions per place. [2023-08-03 17:33:40,129 INFO L140 encePairwiseOnDemand]: 218/221 looper letters, 37 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2023-08-03 17:33:40,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 49 transitions, 216 flow [2023-08-03 17:33:40,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:33:40,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:33:40,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 338 transitions. [2023-08-03 17:33:40,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5098039215686274 [2023-08-03 17:33:40,132 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 338 transitions. [2023-08-03 17:33:40,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 338 transitions. [2023-08-03 17:33:40,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:33:40,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 338 transitions. [2023-08-03 17:33:40,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:33:40,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:33:40,136 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:33:40,136 INFO L175 Difference]: Start difference. First operand has 54 places, 44 transitions, 125 flow. Second operand 3 states and 338 transitions. [2023-08-03 17:33:40,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 49 transitions, 216 flow [2023-08-03 17:33:40,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 49 transitions, 212 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 17:33:40,139 INFO L231 Difference]: Finished difference. Result has 56 places, 45 transitions, 134 flow [2023-08-03 17:33:40,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=122, 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=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=56, PETRI_TRANSITIONS=45} [2023-08-03 17:33:40,141 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 5 predicate places. [2023-08-03 17:33:40,141 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 45 transitions, 134 flow [2023-08-03 17:33:40,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:33:40,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:33:40,142 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 17:33:40,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-03 17:33:40,142 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 17:33:40,143 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:33:40,143 INFO L85 PathProgramCache]: Analyzing trace with hash -388286115, now seen corresponding path program 1 times [2023-08-03 17:33:40,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:33:40,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817200914] [2023-08-03 17:33:40,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:33:40,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:33:40,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:33:40,171 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 17:33:40,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:33:40,201 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 17:33:40,201 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 17:33:40,201 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-08-03 17:33:40,201 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-08-03 17:33:40,202 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2023-08-03 17:33:40,202 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2023-08-03 17:33:40,202 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2023-08-03 17:33:40,202 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-08-03 17:33:40,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-03 17:33:40,203 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-03 17:33:40,208 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 17:33:40,210 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 17:33:40,277 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 05:33:40 BasicIcfg [2023-08-03 17:33:40,277 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 17:33:40,278 INFO L158 Benchmark]: Toolchain (without parser) took 15456.68ms. Allocated memory was 339.7MB in the beginning and 1.5GB in the end (delta: 1.2GB). Free memory was 288.8MB in the beginning and 986.0MB in the end (delta: -697.2MB). Peak memory consumption was 470.2MB. Max. memory is 16.0GB. [2023-08-03 17:33:40,278 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 339.7MB. Free memory is still 292.1MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 17:33:40,278 INFO L158 Benchmark]: CACSL2BoogieTranslator took 446.20ms. Allocated memory is still 339.7MB. Free memory was 288.8MB in the beginning and 265.7MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2023-08-03 17:33:40,278 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.24ms. Allocated memory is still 339.7MB. Free memory was 265.7MB in the beginning and 263.3MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 17:33:40,279 INFO L158 Benchmark]: Boogie Preprocessor took 32.95ms. Allocated memory is still 339.7MB. Free memory was 263.3MB in the beginning and 261.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 17:33:40,279 INFO L158 Benchmark]: RCFGBuilder took 700.40ms. Allocated memory was 339.7MB in the beginning and 484.4MB in the end (delta: 144.7MB). Free memory was 261.5MB in the beginning and 427.6MB in the end (delta: -166.1MB). Peak memory consumption was 18.0MB. Max. memory is 16.0GB. [2023-08-03 17:33:40,279 INFO L158 Benchmark]: TraceAbstraction took 14228.62ms. Allocated memory was 484.4MB in the beginning and 1.5GB in the end (delta: 1.0GB). Free memory was 426.9MB in the beginning and 986.0MB in the end (delta: -559.1MB). Peak memory consumption was 462.7MB. Max. memory is 16.0GB. [2023-08-03 17:33:40,281 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 339.7MB. Free memory is still 292.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 446.20ms. Allocated memory is still 339.7MB. Free memory was 288.8MB in the beginning and 265.7MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 42.24ms. Allocated memory is still 339.7MB. Free memory was 265.7MB in the beginning and 263.3MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 32.95ms. Allocated memory is still 339.7MB. Free memory was 263.3MB in the beginning and 261.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 700.40ms. Allocated memory was 339.7MB in the beginning and 484.4MB in the end (delta: 144.7MB). Free memory was 261.5MB in the beginning and 427.6MB in the end (delta: -166.1MB). Peak memory consumption was 18.0MB. Max. memory is 16.0GB. * TraceAbstraction took 14228.62ms. Allocated memory was 484.4MB in the beginning and 1.5GB in the end (delta: 1.0GB). Free memory was 426.9MB in the beginning and 986.0MB in the end (delta: -559.1MB). Peak memory consumption was 462.7MB. 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: 2.9s, 106 PlacesBefore, 31 PlacesAfterwards, 105 TransitionsBefore, 27 TransitionsAfterwards, 1642 CoEnabledTransitionPairs, 6 FixpointIterations, 34 TrivialSequentialCompositions, 42 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 14 ConcurrentYvCompositions, 3 ChoiceCompositions, 93 TotalNumberOfCompositions, 4215 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2076, independent: 1939, independent conditional: 0, independent unconditional: 1939, dependent: 137, dependent conditional: 0, dependent unconditional: 137, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 879, independent: 852, independent conditional: 0, independent unconditional: 852, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2076, independent: 1087, independent conditional: 0, independent unconditional: 1087, dependent: 110, dependent conditional: 0, dependent unconditional: 110, unknown: 879, unknown conditional: 0, unknown unconditional: 879] , Statistics on independence cache: Total cache size (in pairs): 88, Positive cache size: 74, Positive conditional cache size: 0, Positive unconditional cache size: 74, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.8s, 129 PlacesBefore, 51 PlacesAfterwards, 124 TransitionsBefore, 43 TransitionsAfterwards, 3928 CoEnabledTransitionPairs, 6 FixpointIterations, 34 TrivialSequentialCompositions, 47 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 13 ConcurrentYvCompositions, 3 ChoiceCompositions, 97 TotalNumberOfCompositions, 13237 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5673, independent: 5407, independent conditional: 0, independent unconditional: 5407, dependent: 266, dependent conditional: 0, dependent unconditional: 266, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1926, independent: 1885, independent conditional: 0, independent unconditional: 1885, dependent: 41, dependent conditional: 0, dependent unconditional: 41, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5673, independent: 3522, independent conditional: 0, independent unconditional: 3522, dependent: 225, dependent conditional: 0, dependent unconditional: 225, unknown: 1926, unknown conditional: 0, unknown unconditional: 1926] , Statistics on independence cache: Total cache size (in pairs): 264, Positive cache size: 243, Positive conditional cache size: 0, Positive unconditional cache size: 243, Negative cache size: 21, Negative conditional cache size: 0, Negative unconditional cache size: 21, 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; [L720] 0 int z = 0; [L721] 0 _Bool z$flush_delayed; [L722] 0 int z$mem_tmp; [L723] 0 _Bool z$r_buff0_thd0; [L724] 0 _Bool z$r_buff0_thd1; [L725] 0 _Bool z$r_buff0_thd2; [L726] 0 _Bool z$r_buff1_thd0; [L727] 0 _Bool z$r_buff1_thd1; [L728] 0 _Bool z$r_buff1_thd2; [L729] 0 _Bool z$read_delayed; [L730] 0 int *z$read_delayed_var; [L731] 0 int z$w_buff0; [L732] 0 _Bool z$w_buff0_used; [L733] 0 int z$w_buff1; [L734] 0 _Bool z$w_buff1_used; [L735] 0 _Bool weak$$choice0; [L736] 0 _Bool weak$$choice2; [L815] 0 pthread_t t1089[2]; [L816] 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, t1089={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=0] [L816] COND TRUE 0 asdf<2 [L816] FCALL, FORK 0 pthread_create(&t1089[asdf], ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, asdf=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1089[asdf], ((void *)0), P0, ((void *)0))=-1, t1089={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=0] [L740] 1 z$w_buff1 = z$w_buff0 [L741] 1 z$w_buff0 = 1 [L742] 1 z$w_buff1_used = z$w_buff0_used [L743] 1 z$w_buff0_used = (_Bool)1 [L744] CALL 1 __VERIFIER_assert(!(z$w_buff1_used && z$w_buff0_used)) [L18] COND FALSE 1 !(!expression) [L744] RET 1 __VERIFIER_assert(!(z$w_buff1_used && z$w_buff0_used)) [L745] 1 z$r_buff1_thd0 = z$r_buff0_thd0 [L746] 1 z$r_buff1_thd1 = z$r_buff0_thd1 [L747] 1 z$r_buff1_thd2 = z$r_buff0_thd2 [L748] 1 z$r_buff0_thd1 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=1, z$r_buff0_thd2=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L816] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, asdf=1, main$tmp_guard0=0, main$tmp_guard1=0, t1089={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=1, z$r_buff0_thd2=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L816] COND TRUE 0 asdf<2 [L816] FCALL, FORK 0 pthread_create(&t1089[asdf], ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, asdf=1, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1089[asdf], ((void *)0), P0, ((void *)0))=0, t1089={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=1, z$r_buff0_thd2=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L740] 2 z$w_buff1 = z$w_buff0 [L741] 2 z$w_buff0 = 1 [L742] 2 z$w_buff1_used = z$w_buff0_used [L743] 2 z$w_buff0_used = (_Bool)1 [L744] CALL 2 __VERIFIER_assert(!(z$w_buff1_used && z$w_buff0_used)) [L18] COND TRUE 2 !expression [L18] 2 reach_error() VAL [\old(expression)=0, __unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, expression=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=1, z$r_buff0_thd2=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=1, z$w_buff1_used=1, z=0] - UnprovableResult [Line: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 818]: 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: 816]: 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, 121 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.8s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 14 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 40 IncrementalHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 1 mSDtfsCounter, 40 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=64occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 21 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 7 procedures, 140 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 10.3s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 7.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 33 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 25 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 132 IncrementalHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 1 mSDtfsCounter, 132 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=134occurred in iteration=2, InterpolantAutomatonStates: 6, 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, 0.1s InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 16 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 RESULT: Ultimate proved your program to be incorrect! [2023-08-03 17:33:40,309 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...