/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_mix011_power.oepc_pso.oepc_rmo.oepc_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 17:04:55,937 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 17:04:55,994 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 17:04:55,997 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 17:04:55,998 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 17:04:55,998 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 17:04:55,998 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 17:04:56,018 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 17:04:56,019 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 17:04:56,022 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 17:04:56,022 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 17:04:56,022 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 17:04:56,023 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 17:04:56,024 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 17:04:56,024 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 17:04:56,024 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 17:04:56,024 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 17:04:56,025 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 17:04:56,025 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 17:04:56,025 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 17:04:56,025 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 17:04:56,025 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 17:04:56,025 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 17:04:56,025 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 17:04:56,026 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 17:04:56,026 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 17:04:56,026 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 17:04:56,026 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 17:04:56,026 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 17:04:56,026 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 17:04:56,027 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 17:04:56,027 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 17:04:56,027 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 17:04:56,027 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 17:04:56,028 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 17:04:56,028 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 17:04:56,028 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 17:04:56,028 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 17:04:56,028 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 17:04:56,028 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 17:04:56,028 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 17:04:56,028 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 17:04:56,174 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 17:04:56,190 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 17:04:56,191 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 17:04:56,192 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 17:04:56,192 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 17:04:56,193 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix011_power.oepc_pso.oepc_rmo.oepc_bound2.i [2023-08-03 17:04:57,114 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 17:04:57,322 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 17:04:57,323 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix011_power.oepc_pso.oepc_rmo.oepc_bound2.i [2023-08-03 17:04:57,339 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e0b746bb/ef810c23b9e042819cd3849a898332b5/FLAG93fc28ffe [2023-08-03 17:04:57,353 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e0b746bb/ef810c23b9e042819cd3849a898332b5 [2023-08-03 17:04:57,354 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 17:04:57,355 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 17:04:57,356 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 17:04:57,357 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 17:04:57,360 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 17:04:57,360 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 05:04:57" (1/1) ... [2023-08-03 17:04:57,361 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58c792dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:04:57, skipping insertion in model container [2023-08-03 17:04:57,361 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 05:04:57" (1/1) ... [2023-08-03 17:04:57,398 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 17:04:57,504 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_mix011_power.oepc_pso.oepc_rmo.oepc_bound2.i[969,982] [2023-08-03 17:04:57,679 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 17:04:57,685 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 17:04:57,695 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_mix011_power.oepc_pso.oepc_rmo.oepc_bound2.i[969,982] [2023-08-03 17:04:57,700 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 17:04:57,701 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 17:04:57,733 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 17:04:57,752 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 17:04:57,752 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 17:04:57,758 INFO L206 MainTranslator]: Completed translation [2023-08-03 17:04:57,758 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:04:57 WrapperNode [2023-08-03 17:04:57,758 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 17:04:57,759 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 17:04:57,759 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 17:04:57,759 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 17:04:57,763 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:04:57" (1/1) ... [2023-08-03 17:04:57,792 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:04:57" (1/1) ... [2023-08-03 17:04:57,819 INFO L138 Inliner]: procedures = 176, calls = 60, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 155 [2023-08-03 17:04:57,820 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 17:04:57,820 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 17:04:57,820 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 17:04:57,820 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 17:04:57,826 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:04:57" (1/1) ... [2023-08-03 17:04:57,826 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:04:57" (1/1) ... [2023-08-03 17:04:57,837 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:04:57" (1/1) ... [2023-08-03 17:04:57,837 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:04:57" (1/1) ... [2023-08-03 17:04:57,847 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:04:57" (1/1) ... [2023-08-03 17:04:57,849 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:04:57" (1/1) ... [2023-08-03 17:04:57,851 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:04:57" (1/1) ... [2023-08-03 17:04:57,852 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:04:57" (1/1) ... [2023-08-03 17:04:57,853 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 17:04:57,854 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 17:04:57,854 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 17:04:57,854 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 17:04:57,855 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:04:57" (1/1) ... [2023-08-03 17:04:57,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 17:04:57,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 17:04:57,895 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 17:04:57,916 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 17:04:57,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 17:04:57,925 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 17:04:57,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 17:04:57,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 17:04:57,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 17:04:57,926 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-03 17:04:57,926 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-03 17:04:57,926 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-03 17:04:57,926 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-03 17:04:57,927 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-03 17:04:57,927 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-03 17:04:57,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 17:04:57,927 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 17:04:57,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 17:04:57,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 17:04:57,928 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 17:04:58,059 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 17:04:58,061 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 17:04:58,321 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 17:04:58,417 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 17:04:58,418 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-03 17:04:58,421 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 05:04:58 BoogieIcfgContainer [2023-08-03 17:04:58,421 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 17:04:58,423 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 17:04:58,423 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 17:04:58,425 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 17:04:58,425 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 05:04:57" (1/3) ... [2023-08-03 17:04:58,426 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42a67d6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 05:04:58, skipping insertion in model container [2023-08-03 17:04:58,427 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:04:57" (2/3) ... [2023-08-03 17:04:58,427 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42a67d6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 05:04:58, skipping insertion in model container [2023-08-03 17:04:58,427 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 05:04:58" (3/3) ... [2023-08-03 17:04:58,428 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_mix011_power.oepc_pso.oepc_rmo.oepc_bound2.i [2023-08-03 17:04:58,433 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 17:04:58,438 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 17:04:58,439 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-03 17:04:58,439 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 17:04:58,477 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 17:04:58,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 137 places, 135 transitions, 285 flow [2023-08-03 17:04:58,593 INFO L124 PetriNetUnfolderBase]: 30/459 cut-off events. [2023-08-03 17:04:58,593 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:04:58,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 484 conditions, 459 events. 30/459 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2037 event pairs, 0 based on Foata normal form. 0/406 useless extension candidates. Maximal degree in co-relation 276. Up to 16 conditions per place. [2023-08-03 17:04:58,600 INFO L82 GeneralOperation]: Start removeDead. Operand has 137 places, 135 transitions, 285 flow [2023-08-03 17:04:58,604 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 137 places, 135 transitions, 285 flow [2023-08-03 17:04:58,606 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 17:04:58,615 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 137 places, 135 transitions, 285 flow [2023-08-03 17:04:58,617 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 137 places, 135 transitions, 285 flow [2023-08-03 17:04:58,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 137 places, 135 transitions, 285 flow [2023-08-03 17:04:58,666 INFO L124 PetriNetUnfolderBase]: 30/459 cut-off events. [2023-08-03 17:04:58,666 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:04:58,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 484 conditions, 459 events. 30/459 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2037 event pairs, 0 based on Foata normal form. 0/406 useless extension candidates. Maximal degree in co-relation 276. Up to 16 conditions per place. [2023-08-03 17:04:58,671 INFO L119 LiptonReduction]: Number of co-enabled transitions 3116 [2023-08-03 17:05:01,420 INFO L134 LiptonReduction]: Checked pairs total: 8991 [2023-08-03 17:05:01,421 INFO L136 LiptonReduction]: Total number of compositions: 114 [2023-08-03 17:05:01,429 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 17:05:01,433 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;@cfbf58b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 17:05:01,433 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-03 17:05:01,435 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 17:05:01,436 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-08-03 17:05:01,436 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:05:01,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:05:01,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 17:05:01,436 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 17:05:01,439 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:05:01,439 INFO L85 PathProgramCache]: Analyzing trace with hash 17873277, now seen corresponding path program 1 times [2023-08-03 17:05:01,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:05:01,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67533948] [2023-08-03 17:05:01,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:05:01,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:05:01,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:05:01,714 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 17:05:01,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:05:01,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67533948] [2023-08-03 17:05:01,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67533948] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:05:01,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:05:01,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 17:05:01,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634435065] [2023-08-03 17:05:01,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:05:01,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:05:01,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:05:01,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:05:01,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:05:01,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 249 [2023-08-03 17:05:01,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 37 transitions, 89 flow. Second operand has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:05:01,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:05:01,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 249 [2023-08-03 17:05:01,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:05:02,257 INFO L124 PetriNetUnfolderBase]: 3071/5199 cut-off events. [2023-08-03 17:05:02,257 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2023-08-03 17:05:02,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10049 conditions, 5199 events. 3071/5199 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 33736 event pairs, 824 based on Foata normal form. 180/4778 useless extension candidates. Maximal degree in co-relation 8470. Up to 3262 conditions per place. [2023-08-03 17:05:02,278 INFO L140 encePairwiseOnDemand]: 245/249 looper letters, 47 selfloop transitions, 2 changer transitions 4/59 dead transitions. [2023-08-03 17:05:02,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 59 transitions, 245 flow [2023-08-03 17:05:02,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:05:02,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:05:02,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 410 transitions. [2023-08-03 17:05:02,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5488621151271754 [2023-08-03 17:05:02,292 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 410 transitions. [2023-08-03 17:05:02,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 410 transitions. [2023-08-03 17:05:02,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:05:02,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 410 transitions. [2023-08-03 17:05:02,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:05:02,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 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 17:05:02,305 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 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 17:05:02,306 INFO L175 Difference]: Start difference. First operand has 43 places, 37 transitions, 89 flow. Second operand 3 states and 410 transitions. [2023-08-03 17:05:02,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 59 transitions, 245 flow [2023-08-03 17:05:02,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 59 transitions, 245 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 17:05:02,310 INFO L231 Difference]: Finished difference. Result has 44 places, 33 transitions, 85 flow [2023-08-03 17:05:02,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=85, PETRI_PLACES=44, PETRI_TRANSITIONS=33} [2023-08-03 17:05:02,313 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 1 predicate places. [2023-08-03 17:05:02,313 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 33 transitions, 85 flow [2023-08-03 17:05:02,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:05:02,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:05:02,314 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 17:05:02,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 17:05:02,314 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 17:05:02,316 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:05:02,316 INFO L85 PathProgramCache]: Analyzing trace with hash -3583737, now seen corresponding path program 1 times [2023-08-03 17:05:02,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:05:02,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609650484] [2023-08-03 17:05:02,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:05:02,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:05:02,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:05:02,345 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 17:05:02,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:05:02,373 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 17:05:02,373 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 17:05:02,374 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2023-08-03 17:05:02,378 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-08-03 17:05:02,378 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2023-08-03 17:05:02,378 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2023-08-03 17:05:02,378 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2023-08-03 17:05:02,378 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-08-03 17:05:02,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 17:05:02,379 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 17:05:02,380 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 17:05:02,380 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 17:05:02,402 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 17:05:02,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 171 places, 163 transitions, 362 flow [2023-08-03 17:05:02,497 INFO L124 PetriNetUnfolderBase]: 93/1410 cut-off events. [2023-08-03 17:05:02,498 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 17:05:02,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1508 conditions, 1410 events. 93/1410 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 9796 event pairs, 0 based on Foata normal form. 0/1249 useless extension candidates. Maximal degree in co-relation 1024. Up to 54 conditions per place. [2023-08-03 17:05:02,503 INFO L82 GeneralOperation]: Start removeDead. Operand has 171 places, 163 transitions, 362 flow [2023-08-03 17:05:02,506 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 171 places, 163 transitions, 362 flow [2023-08-03 17:05:02,506 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 17:05:02,507 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 171 places, 163 transitions, 362 flow [2023-08-03 17:05:02,507 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 171 places, 163 transitions, 362 flow [2023-08-03 17:05:02,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 171 places, 163 transitions, 362 flow [2023-08-03 17:05:02,595 INFO L124 PetriNetUnfolderBase]: 93/1410 cut-off events. [2023-08-03 17:05:02,595 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 17:05:02,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1508 conditions, 1410 events. 93/1410 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 9796 event pairs, 0 based on Foata normal form. 0/1249 useless extension candidates. Maximal degree in co-relation 1024. Up to 54 conditions per place. [2023-08-03 17:05:02,620 INFO L119 LiptonReduction]: Number of co-enabled transitions 7632 [2023-08-03 17:05:05,366 INFO L134 LiptonReduction]: Checked pairs total: 26041 [2023-08-03 17:05:05,366 INFO L136 LiptonReduction]: Total number of compositions: 120 [2023-08-03 17:05:05,370 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 17:05:05,374 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;@cfbf58b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 17:05:05,375 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-03 17:05:05,376 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 17:05:05,376 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2023-08-03 17:05:05,376 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:05:05,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:05:05,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 17:05:05,376 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 17:05:05,377 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:05:05,377 INFO L85 PathProgramCache]: Analyzing trace with hash 27452662, now seen corresponding path program 1 times [2023-08-03 17:05:05,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:05:05,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023115803] [2023-08-03 17:05:05,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:05:05,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:05:05,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:05:05,456 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 17:05:05,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:05:05,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023115803] [2023-08-03 17:05:05,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023115803] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:05:05,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:05:05,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 17:05:05,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982407692] [2023-08-03 17:05:05,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:05:05,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:05:05,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:05:05,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:05:05,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:05:05,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 283 [2023-08-03 17:05:05,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 60 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 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 17:05:05,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:05:05,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 283 [2023-08-03 17:05:05,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:06:09,092 INFO L124 PetriNetUnfolderBase]: 633758/832639 cut-off events. [2023-08-03 17:06:09,092 INFO L125 PetriNetUnfolderBase]: For 9452/9452 co-relation queries the response was YES. [2023-08-03 17:06:11,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1635962 conditions, 832639 events. 633758/832639 cut-off events. For 9452/9452 co-relation queries the response was YES. Maximal size of possible extension queue 25089. Compared 6520699 event pairs, 105182 based on Foata normal form. 17577/749223 useless extension candidates. Maximal degree in co-relation 1377074. Up to 729279 conditions per place. [2023-08-03 17:06:13,991 INFO L140 encePairwiseOnDemand]: 277/283 looper letters, 75 selfloop transitions, 3 changer transitions 0/94 dead transitions. [2023-08-03 17:06:13,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 94 transitions, 401 flow [2023-08-03 17:06:13,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:06:13,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:06:13,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 493 transitions. [2023-08-03 17:06:13,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5806831566548881 [2023-08-03 17:06:13,993 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 493 transitions. [2023-08-03 17:06:13,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 493 transitions. [2023-08-03 17:06:13,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:06:13,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 493 transitions. [2023-08-03 17:06:13,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 164.33333333333334) internal successors, (493), 3 states have internal predecessors, (493), 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 17:06:13,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 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 17:06:13,996 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 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 17:06:13,996 INFO L175 Difference]: Start difference. First operand has 72 places, 60 transitions, 156 flow. Second operand 3 states and 493 transitions. [2023-08-03 17:06:13,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 94 transitions, 401 flow [2023-08-03 17:06:14,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 94 transitions, 395 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-03 17:06:14,008 INFO L231 Difference]: Finished difference. Result has 75 places, 61 transitions, 169 flow [2023-08-03 17:06:14,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=169, PETRI_PLACES=75, PETRI_TRANSITIONS=61} [2023-08-03 17:06:14,008 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 3 predicate places. [2023-08-03 17:06:14,008 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 61 transitions, 169 flow [2023-08-03 17:06:14,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 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 17:06:14,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:06:14,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-03 17:06:14,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 17:06:14,009 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 17:06:14,009 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:06:14,009 INFO L85 PathProgramCache]: Analyzing trace with hash 2147002401, now seen corresponding path program 1 times [2023-08-03 17:06:14,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:06:14,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953962555] [2023-08-03 17:06:14,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:06:14,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:06:14,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:06:14,052 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 17:06:14,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:06:14,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953962555] [2023-08-03 17:06:14,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953962555] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:06:14,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:06:14,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 17:06:14,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570588702] [2023-08-03 17:06:14,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:06:14,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:06:14,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:06:14,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:06:14,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:06:14,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 283 [2023-08-03 17:06:14,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 61 transitions, 169 flow. Second operand has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 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 17:06:14,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:06:14,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 283 [2023-08-03 17:06:14,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:07:19,314 INFO L124 PetriNetUnfolderBase]: 618374/806822 cut-off events. [2023-08-03 17:07:19,314 INFO L125 PetriNetUnfolderBase]: For 61834/61834 co-relation queries the response was YES. [2023-08-03 17:07:21,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1695229 conditions, 806822 events. 618374/806822 cut-off events. For 61834/61834 co-relation queries the response was YES. Maximal size of possible extension queue 23309. Compared 6001432 event pairs, 518026 based on Foata normal form. 0/700461 useless extension candidates. Maximal degree in co-relation 1116494. Up to 771849 conditions per place. [2023-08-03 17:07:24,342 INFO L140 encePairwiseOnDemand]: 280/283 looper letters, 48 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2023-08-03 17:07:24,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 66 transitions, 282 flow [2023-08-03 17:07:24,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:07:24,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:07:24,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 451 transitions. [2023-08-03 17:07:24,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5312131919905771 [2023-08-03 17:07:24,344 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 451 transitions. [2023-08-03 17:07:24,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 451 transitions. [2023-08-03 17:07:24,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:07:24,344 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 451 transitions. [2023-08-03 17:07:24,345 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.33333333333334) internal successors, (451), 3 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 17:07:24,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 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 17:07:24,346 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 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 17:07:24,346 INFO L175 Difference]: Start difference. First operand has 75 places, 61 transitions, 169 flow. Second operand 3 states and 451 transitions. [2023-08-03 17:07:24,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 66 transitions, 282 flow [2023-08-03 17:07:24,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 66 transitions, 278 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 17:07:24,369 INFO L231 Difference]: Finished difference. Result has 77 places, 62 transitions, 178 flow [2023-08-03 17:07:24,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=77, PETRI_TRANSITIONS=62} [2023-08-03 17:07:24,369 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 5 predicate places. [2023-08-03 17:07:24,369 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 62 transitions, 178 flow [2023-08-03 17:07:24,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 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 17:07:24,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:07:24,370 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 17:07:24,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-03 17:07:24,370 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 17:07:24,370 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:07:24,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1955902079, now seen corresponding path program 1 times [2023-08-03 17:07:24,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:07:24,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585246035] [2023-08-03 17:07:24,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:07:24,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:07:24,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:07:24,385 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 17:07:24,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:07:24,394 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 17:07:24,394 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 17:07:24,394 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2023-08-03 17:07:24,395 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-08-03 17:07:24,395 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2023-08-03 17:07:24,395 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2023-08-03 17:07:24,395 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2023-08-03 17:07:24,395 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2023-08-03 17:07:24,395 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-08-03 17:07:24,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-03 17:07:24,395 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-03 17:07:24,398 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 17:07:24,398 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 17:07:24,422 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 05:07:24 BasicIcfg [2023-08-03 17:07:24,422 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 17:07:24,422 INFO L158 Benchmark]: Toolchain (without parser) took 147067.09ms. Allocated memory was 593.5MB in the beginning and 16.0GB in the end (delta: 15.4GB). Free memory was 552.9MB in the beginning and 9.7GB in the end (delta: -9.1GB). Peak memory consumption was 6.3GB. Max. memory is 16.0GB. [2023-08-03 17:07:24,423 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 404.8MB. Free memory is still 357.4MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 17:07:24,423 INFO L158 Benchmark]: CACSL2BoogieTranslator took 402.09ms. Allocated memory is still 593.5MB. Free memory was 552.6MB in the beginning and 528.9MB in the end (delta: 23.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. [2023-08-03 17:07:24,423 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.48ms. Allocated memory is still 593.5MB. Free memory was 528.9MB in the beginning and 526.5MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 17:07:24,423 INFO L158 Benchmark]: Boogie Preprocessor took 33.57ms. Allocated memory is still 593.5MB. Free memory was 526.5MB in the beginning and 524.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 17:07:24,423 INFO L158 Benchmark]: RCFGBuilder took 567.06ms. Allocated memory is still 593.5MB. Free memory was 524.0MB in the beginning and 542.3MB in the end (delta: -18.3MB). Peak memory consumption was 27.8MB. Max. memory is 16.0GB. [2023-08-03 17:07:24,424 INFO L158 Benchmark]: TraceAbstraction took 145999.14ms. Allocated memory was 593.5MB in the beginning and 16.0GB in the end (delta: 15.4GB). Free memory was 541.3MB in the beginning and 9.7GB in the end (delta: -9.1GB). Peak memory consumption was 6.3GB. Max. memory is 16.0GB. [2023-08-03 17:07:24,425 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 404.8MB. Free memory is still 357.4MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 402.09ms. Allocated memory is still 593.5MB. Free memory was 552.6MB in the beginning and 528.9MB in the end (delta: 23.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 60.48ms. Allocated memory is still 593.5MB. Free memory was 528.9MB in the beginning and 526.5MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 33.57ms. Allocated memory is still 593.5MB. Free memory was 526.5MB in the beginning and 524.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 567.06ms. Allocated memory is still 593.5MB. Free memory was 524.0MB in the beginning and 542.3MB in the end (delta: -18.3MB). Peak memory consumption was 27.8MB. Max. memory is 16.0GB. * TraceAbstraction took 145999.14ms. Allocated memory was 593.5MB in the beginning and 16.0GB in the end (delta: 15.4GB). Free memory was 541.3MB in the beginning and 9.7GB in the end (delta: -9.1GB). Peak memory consumption was 6.3GB. 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: 2.8s, 137 PlacesBefore, 43 PlacesAfterwards, 135 TransitionsBefore, 37 TransitionsAfterwards, 3116 CoEnabledTransitionPairs, 7 FixpointIterations, 39 TrivialSequentialCompositions, 56 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 15 ConcurrentYvCompositions, 4 ChoiceCompositions, 114 TotalNumberOfCompositions, 8991 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4982, independent: 4759, independent conditional: 0, independent unconditional: 4759, dependent: 223, dependent conditional: 0, dependent unconditional: 223, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1655, independent: 1626, independent conditional: 0, independent unconditional: 1626, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4982, independent: 3133, independent conditional: 0, independent unconditional: 3133, dependent: 194, dependent conditional: 0, dependent unconditional: 194, unknown: 1655, unknown conditional: 0, unknown unconditional: 1655] , Statistics on independence cache: Total cache size (in pairs): 223, Positive cache size: 207, Positive conditional cache size: 0, Positive unconditional cache size: 207, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.9s, 171 PlacesBefore, 72 PlacesAfterwards, 163 TransitionsBefore, 60 TransitionsAfterwards, 7632 CoEnabledTransitionPairs, 6 FixpointIterations, 39 TrivialSequentialCompositions, 62 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 15 ConcurrentYvCompositions, 4 ChoiceCompositions, 120 TotalNumberOfCompositions, 26041 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 9475, independent: 9102, independent conditional: 0, independent unconditional: 9102, dependent: 373, dependent conditional: 0, dependent unconditional: 373, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3691, independent: 3620, independent conditional: 0, independent unconditional: 3620, dependent: 71, dependent conditional: 0, dependent unconditional: 71, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 9475, independent: 5482, independent conditional: 0, independent unconditional: 5482, dependent: 302, dependent conditional: 0, dependent unconditional: 302, unknown: 3691, unknown conditional: 0, unknown unconditional: 3691] , Statistics on independence cache: Total cache size (in pairs): 447, Positive cache size: 412, Positive conditional cache size: 0, Positive unconditional cache size: 412, Negative cache size: 35, Negative conditional cache size: 0, Negative unconditional cache size: 35, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L709] 0 int __unbuffered_cnt = 0; [L711] 0 int __unbuffered_p1_EAX = 0; [L713] 0 int __unbuffered_p1_EBX = 0; [L715] 0 int __unbuffered_p2_EAX = 0; [L717] 0 int __unbuffered_p2_EBX = 0; [L719] 0 int a = 0; [L720] 0 _Bool a$flush_delayed; [L721] 0 int a$mem_tmp; [L722] 0 _Bool a$r_buff0_thd0; [L723] 0 _Bool a$r_buff0_thd1; [L724] 0 _Bool a$r_buff0_thd2; [L725] 0 _Bool a$r_buff0_thd3; [L726] 0 _Bool a$r_buff1_thd0; [L727] 0 _Bool a$r_buff1_thd1; [L728] 0 _Bool a$r_buff1_thd2; [L729] 0 _Bool a$r_buff1_thd3; [L730] 0 _Bool a$read_delayed; [L731] 0 int *a$read_delayed_var; [L732] 0 int a$w_buff0; [L733] 0 _Bool a$w_buff0_used; [L734] 0 int a$w_buff1; [L735] 0 _Bool a$w_buff1_used; [L736] 0 _Bool main$tmp_guard0; [L737] 0 _Bool main$tmp_guard1; [L739] 0 int x = 0; [L741] 0 int y = 0; [L743] 0 int z = 0; [L744] 0 _Bool weak$$choice0; [L745] 0 _Bool weak$$choice2; [L848] 0 pthread_t t281[2]; [L849] 0 int asdf=0; VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=0, a$r_buff0_thd2=0, a$r_buff0_thd3=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$r_buff1_thd3=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=0, a$w_buff0_used=0, a$w_buff1=0, a$w_buff1_used=0, a=0, asdf=0, main$tmp_guard0=0, main$tmp_guard1=0, t281={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0] [L849] COND TRUE 0 asdf<2 [L849] FCALL, FORK 0 pthread_create(&t281[asdf], ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=0, a$r_buff0_thd2=0, a$r_buff0_thd3=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$r_buff1_thd3=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=0, a$w_buff0_used=0, a$w_buff1=0, a$w_buff1_used=0, a=0, asdf=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t281[asdf], ((void *)0), P0, ((void *)0))=-2, t281={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0] [L749] 1 a$w_buff1 = a$w_buff0 [L750] 1 a$w_buff0 = 1 [L751] 1 a$w_buff1_used = a$w_buff0_used [L752] 1 a$w_buff0_used = (_Bool)1 [L753] CALL 1 __VERIFIER_assert(!(a$w_buff1_used && a$w_buff0_used)) [L18] COND FALSE 1 !(!expression) [L753] RET 1 __VERIFIER_assert(!(a$w_buff1_used && a$w_buff0_used)) [L754] 1 a$r_buff1_thd0 = a$r_buff0_thd0 [L755] 1 a$r_buff1_thd1 = a$r_buff0_thd1 [L756] 1 a$r_buff1_thd2 = a$r_buff0_thd2 [L757] 1 a$r_buff1_thd3 = a$r_buff0_thd3 [L758] 1 a$r_buff0_thd1 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=1, a$r_buff0_thd2=0, a$r_buff0_thd3=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$r_buff1_thd3=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=1, a$w_buff0_used=1, a$w_buff1=0, a$w_buff1_used=0, a=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0] [L849] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=1, a$r_buff0_thd2=0, a$r_buff0_thd3=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$r_buff1_thd3=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=1, a$w_buff0_used=1, a$w_buff1=0, a$w_buff1_used=0, a=0, asdf=1, main$tmp_guard0=0, main$tmp_guard1=0, t281={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0] [L849] COND TRUE 0 asdf<2 [L849] FCALL, FORK 0 pthread_create(&t281[asdf], ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=1, a$r_buff0_thd2=0, a$r_buff0_thd3=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$r_buff1_thd3=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=1, a$w_buff0_used=1, a$w_buff1=0, a$w_buff1_used=0, a=0, asdf=1, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t281[asdf], ((void *)0), P0, ((void *)0))=-1, t281={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0] [L749] 2 a$w_buff1 = a$w_buff0 [L750] 2 a$w_buff0 = 1 [L751] 2 a$w_buff1_used = a$w_buff0_used [L752] 2 a$w_buff0_used = (_Bool)1 [L753] CALL 2 __VERIFIER_assert(!(a$w_buff1_used && a$w_buff0_used)) [L18] COND TRUE 2 !expression [L18] 2 reach_error() VAL [\old(expression)=1, __unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=1, a$r_buff0_thd2=0, a$r_buff0_thd3=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$r_buff1_thd3=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=1, a$w_buff0_used=1, a$w_buff1=1, a$w_buff1_used=1, a=0, expression=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0] - UnprovableResult [Line: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 853]: 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: 851]: 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: 849]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 159 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: 3.9s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 20 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 19 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 56 IncrementalHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 1 mSDtfsCounter, 56 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=89occurred 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, 9 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 10 procedures, 187 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 142.0s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 138.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 46 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 34 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 179 IncrementalHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 1 mSDtfsCounter, 179 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=178occurred 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, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 17 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 17:07:24,439 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...