/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 PROGRAM_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix039.opt_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 06:05:29,343 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 06:05:29,423 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 06:05:29,428 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 06:05:29,429 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 06:05:29,429 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 06:05:29,429 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 06:05:29,462 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 06:05:29,462 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 06:05:29,463 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 06:05:29,464 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 06:05:29,464 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 06:05:29,465 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 06:05:29,466 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 06:05:29,466 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 06:05:29,467 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 06:05:29,467 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 06:05:29,467 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 06:05:29,467 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 06:05:29,468 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 06:05:29,468 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 06:05:29,473 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 06:05:29,473 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 06:05:29,473 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 06:05:29,473 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 06:05:29,474 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 06:05:29,474 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 06:05:29,474 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 06:05:29,475 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 06:05:29,475 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 06:05:29,476 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 06:05:29,476 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 06:05:29,476 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 06:05:29,476 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 06:05:29,477 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 06:05:29,477 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 06:05:29,477 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 06:05:29,477 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 06:05:29,477 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 06:05:29,477 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 06:05:29,477 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 06:05:29,478 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 06:05:29,717 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 06:05:29,742 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 06:05:29,745 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 06:05:29,746 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 06:05:29,746 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 06:05:29,747 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix039.opt_bound2.i [2023-08-04 06:05:31,043 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 06:05:31,289 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 06:05:31,289 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix039.opt_bound2.i [2023-08-04 06:05:31,314 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/333281975/1e122e50aea941f99d22524724807902/FLAGd1075afbe [2023-08-04 06:05:31,328 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/333281975/1e122e50aea941f99d22524724807902 [2023-08-04 06:05:31,330 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 06:05:31,331 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 06:05:31,333 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 06:05:31,333 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 06:05:31,339 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 06:05:31,339 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 06:05:31" (1/1) ... [2023-08-04 06:05:31,340 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69e38d25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:05:31, skipping insertion in model container [2023-08-04 06:05:31,340 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 06:05:31" (1/1) ... [2023-08-04 06:05:31,389 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 06:05:31,558 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_mix039.opt_bound2.i[944,957] [2023-08-04 06:05:31,795 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 06:05:31,806 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 06:05:31,820 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_mix039.opt_bound2.i[944,957] [2023-08-04 06:05:31,836 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 06:05:31,838 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 06:05:31,893 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 06:05:31,934 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 06:05:31,935 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 06:05:31,941 INFO L206 MainTranslator]: Completed translation [2023-08-04 06:05:31,942 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:05:31 WrapperNode [2023-08-04 06:05:31,943 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 06:05:31,944 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 06:05:31,944 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 06:05:31,944 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 06:05:31,950 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:05:31" (1/1) ... [2023-08-04 06:05:31,984 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:05:31" (1/1) ... [2023-08-04 06:05:32,020 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 184 [2023-08-04 06:05:32,021 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 06:05:32,021 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 06:05:32,021 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 06:05:32,022 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 06:05:32,031 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:05:31" (1/1) ... [2023-08-04 06:05:32,033 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:05:31" (1/1) ... [2023-08-04 06:05:32,037 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:05:31" (1/1) ... [2023-08-04 06:05:32,037 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:05:31" (1/1) ... [2023-08-04 06:05:32,062 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:05:31" (1/1) ... [2023-08-04 06:05:32,065 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:05:31" (1/1) ... [2023-08-04 06:05:32,068 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:05:31" (1/1) ... [2023-08-04 06:05:32,069 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:05:31" (1/1) ... [2023-08-04 06:05:32,072 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 06:05:32,081 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 06:05:32,081 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 06:05:32,081 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 06:05:32,082 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:05:31" (1/1) ... [2023-08-04 06:05:32,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 06:05:32,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:05:32,124 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) [2023-08-04 06:05:32,126 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 [2023-08-04 06:05:32,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 06:05:32,154 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 06:05:32,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 06:05:32,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 06:05:32,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 06:05:32,154 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-04 06:05:32,154 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-04 06:05:32,154 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-04 06:05:32,154 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-04 06:05:32,155 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-04 06:05:32,155 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-04 06:05:32,155 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-04 06:05:32,155 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-04 06:05:32,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 06:05:32,155 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 06:05:32,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 06:05:32,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 06:05:32,157 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-04 06:05:32,296 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 06:05:32,298 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 06:05:32,606 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 06:05:32,728 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 06:05:32,729 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-04 06:05:32,731 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 06:05:32 BoogieIcfgContainer [2023-08-04 06:05:32,732 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 06:05:32,735 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 06:05:32,736 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 06:05:32,739 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 06:05:32,740 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 06:05:31" (1/3) ... [2023-08-04 06:05:32,741 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79a7a1d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 06:05:32, skipping insertion in model container [2023-08-04 06:05:32,741 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:05:31" (2/3) ... [2023-08-04 06:05:32,742 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79a7a1d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 06:05:32, skipping insertion in model container [2023-08-04 06:05:32,742 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 06:05:32" (3/3) ... [2023-08-04 06:05:32,743 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_mix039.opt_bound2.i [2023-08-04 06:05:32,752 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 06:05:32,760 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 06:05:32,760 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-04 06:05:32,760 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 06:05:32,812 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 06:05:32,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 158 transitions, 336 flow [2023-08-04 06:05:33,040 INFO L124 PetriNetUnfolderBase]: 62/942 cut-off events. [2023-08-04 06:05:33,041 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:05:33,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 992 conditions, 942 events. 62/942 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 5878 event pairs, 0 based on Foata normal form. 0/826 useless extension candidates. Maximal degree in co-relation 547. Up to 32 conditions per place. [2023-08-04 06:05:33,052 INFO L82 GeneralOperation]: Start removeDead. Operand has 161 places, 158 transitions, 336 flow [2023-08-04 06:05:33,059 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 158 places, 155 transitions, 324 flow [2023-08-04 06:05:33,063 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 06:05:33,072 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 158 places, 155 transitions, 324 flow [2023-08-04 06:05:33,074 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 158 places, 155 transitions, 324 flow [2023-08-04 06:05:33,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 155 transitions, 324 flow [2023-08-04 06:05:33,199 INFO L124 PetriNetUnfolderBase]: 62/935 cut-off events. [2023-08-04 06:05:33,199 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:05:33,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 978 conditions, 935 events. 62/935 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 5796 event pairs, 0 based on Foata normal form. 0/819 useless extension candidates. Maximal degree in co-relation 533. Up to 32 conditions per place. [2023-08-04 06:05:33,217 INFO L119 LiptonReduction]: Number of co-enabled transitions 3880 [2023-08-04 06:05:37,257 INFO L134 LiptonReduction]: Checked pairs total: 8689 [2023-08-04 06:05:37,258 INFO L136 LiptonReduction]: Total number of compositions: 133 [2023-08-04 06:05:37,269 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 06:05:37,275 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;@1f5b058, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 06:05:37,275 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 06:05:37,281 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 06:05:37,281 INFO L124 PetriNetUnfolderBase]: 1/34 cut-off events. [2023-08-04 06:05:37,281 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:05:37,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:05:37,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:05:37,282 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:05:37,286 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:05:37,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1307958696, now seen corresponding path program 1 times [2023-08-04 06:05:37,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:05:37,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531807722] [2023-08-04 06:05:37,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:05:37,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:05:37,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:05:37,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 06:05:37,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:05:37,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531807722] [2023-08-04 06:05:37,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531807722] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:05:37,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 06:05:37,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 06:05:37,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862197601] [2023-08-04 06:05:37,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:05:37,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:05:37,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:05:37,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:05:37,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 06:05:37,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 291 [2023-08-04 06:05:37,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 39 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 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) [2023-08-04 06:05:37,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:05:37,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 291 [2023-08-04 06:05:37,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:05:39,272 INFO L124 PetriNetUnfolderBase]: 9278/13613 cut-off events. [2023-08-04 06:05:39,272 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2023-08-04 06:05:39,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27017 conditions, 13613 events. 9278/13613 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 602. Compared 83217 event pairs, 7968 based on Foata normal form. 420/11966 useless extension candidates. Maximal degree in co-relation 27003. Up to 13206 conditions per place. [2023-08-04 06:05:39,388 INFO L140 encePairwiseOnDemand]: 287/291 looper letters, 34 selfloop transitions, 2 changer transitions 1/41 dead transitions. [2023-08-04 06:05:39,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 41 transitions, 170 flow [2023-08-04 06:05:39,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:05:39,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:05:39,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 453 transitions. [2023-08-04 06:05:39,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5189003436426117 [2023-08-04 06:05:39,408 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 453 transitions. [2023-08-04 06:05:39,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 453 transitions. [2023-08-04 06:05:39,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:05:39,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 453 transitions. [2023-08-04 06:05:39,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 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) [2023-08-04 06:05:39,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 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) [2023-08-04 06:05:39,428 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 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) [2023-08-04 06:05:39,430 INFO L175 Difference]: Start difference. First operand has 47 places, 39 transitions, 92 flow. Second operand 3 states and 453 transitions. [2023-08-04 06:05:39,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 41 transitions, 170 flow [2023-08-04 06:05:39,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 41 transitions, 170 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 06:05:39,436 INFO L231 Difference]: Finished difference. Result has 50 places, 38 transitions, 98 flow [2023-08-04 06:05:39,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=50, PETRI_TRANSITIONS=38} [2023-08-04 06:05:39,442 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 3 predicate places. [2023-08-04 06:05:39,442 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 38 transitions, 98 flow [2023-08-04 06:05:39,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 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) [2023-08-04 06:05:39,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:05:39,443 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:05:39,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 06:05:39,444 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:05:39,445 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:05:39,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1775855663, now seen corresponding path program 1 times [2023-08-04 06:05:39,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:05:39,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342536042] [2023-08-04 06:05:39,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:05:39,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:05:39,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:05:39,603 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 06:05:39,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:05:39,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342536042] [2023-08-04 06:05:39,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342536042] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:05:39,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753961565] [2023-08-04 06:05:39,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:05:39,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:05:39,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:05:39,609 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 06:05:39,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-04 06:05:39,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:05:39,721 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 06:05:39,730 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:05:39,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 06:05:39,750 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 06:05:39,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753961565] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:05:39,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 06:05:39,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 06:05:39,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247280417] [2023-08-04 06:05:39,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:05:39,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:05:39,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:05:39,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:05:39,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:05:39,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 291 [2023-08-04 06:05:39,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 38 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:05:39,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:05:39,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 291 [2023-08-04 06:05:39,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:05:40,883 INFO L124 PetriNetUnfolderBase]: 7454/10699 cut-off events. [2023-08-04 06:05:40,885 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2023-08-04 06:05:40,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21274 conditions, 10699 events. 7454/10699 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 61426 event pairs, 6463 based on Foata normal form. 0/9160 useless extension candidates. Maximal degree in co-relation 21257. Up to 10390 conditions per place. [2023-08-04 06:05:40,960 INFO L140 encePairwiseOnDemand]: 288/291 looper letters, 36 selfloop transitions, 2 changer transitions 1/43 dead transitions. [2023-08-04 06:05:40,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 43 transitions, 186 flow [2023-08-04 06:05:40,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:05:40,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:05:40,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 454 transitions. [2023-08-04 06:05:40,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5200458190148912 [2023-08-04 06:05:40,963 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 454 transitions. [2023-08-04 06:05:40,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 454 transitions. [2023-08-04 06:05:40,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:05:40,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 454 transitions. [2023-08-04 06:05:40,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:05:40,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 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) [2023-08-04 06:05:40,967 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 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) [2023-08-04 06:05:40,967 INFO L175 Difference]: Start difference. First operand has 50 places, 38 transitions, 98 flow. Second operand 3 states and 454 transitions. [2023-08-04 06:05:40,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 43 transitions, 186 flow [2023-08-04 06:05:40,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 43 transitions, 182 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 06:05:40,969 INFO L231 Difference]: Finished difference. Result has 51 places, 38 transitions, 102 flow [2023-08-04 06:05:40,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=51, PETRI_TRANSITIONS=38} [2023-08-04 06:05:40,970 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 4 predicate places. [2023-08-04 06:05:40,970 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 38 transitions, 102 flow [2023-08-04 06:05:40,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:05:40,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:05:40,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:05:40,980 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-04 06:05:41,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:05:41,180 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:05:41,181 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:05:41,181 INFO L85 PathProgramCache]: Analyzing trace with hash -30966611, now seen corresponding path program 1 times [2023-08-04 06:05:41,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:05:41,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444116487] [2023-08-04 06:05:41,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:05:41,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:05:41,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:05:41,285 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 06:05:41,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:05:41,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444116487] [2023-08-04 06:05:41,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444116487] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:05:41,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877609791] [2023-08-04 06:05:41,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:05:41,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:05:41,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:05:41,292 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 06:05:41,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-04 06:05:41,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:05:41,418 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 06:05:41,420 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:05:41,433 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 06:05:41,433 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 06:05:41,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877609791] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:05:41,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 06:05:41,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 06:05:41,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641041970] [2023-08-04 06:05:41,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:05:41,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:05:41,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:05:41,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:05:41,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:05:41,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 291 [2023-08-04 06:05:41,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 38 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 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) [2023-08-04 06:05:41,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:05:41,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 291 [2023-08-04 06:05:41,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:05:42,440 INFO L124 PetriNetUnfolderBase]: 6350/9046 cut-off events. [2023-08-04 06:05:42,441 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-04 06:05:42,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17977 conditions, 9046 events. 6350/9046 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 49641 event pairs, 4550 based on Foata normal form. 0/7854 useless extension candidates. Maximal degree in co-relation 17960. Up to 8627 conditions per place. [2023-08-04 06:05:42,515 INFO L140 encePairwiseOnDemand]: 288/291 looper letters, 39 selfloop transitions, 2 changer transitions 1/46 dead transitions. [2023-08-04 06:05:42,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 46 transitions, 202 flow [2023-08-04 06:05:42,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:05:42,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:05:42,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 457 transitions. [2023-08-04 06:05:42,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5234822451317297 [2023-08-04 06:05:42,518 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 457 transitions. [2023-08-04 06:05:42,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 457 transitions. [2023-08-04 06:05:42,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:05:42,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 457 transitions. [2023-08-04 06:05:42,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 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) [2023-08-04 06:05:42,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 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) [2023-08-04 06:05:42,522 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 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) [2023-08-04 06:05:42,522 INFO L175 Difference]: Start difference. First operand has 51 places, 38 transitions, 102 flow. Second operand 3 states and 457 transitions. [2023-08-04 06:05:42,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 46 transitions, 202 flow [2023-08-04 06:05:42,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 46 transitions, 198 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 06:05:42,525 INFO L231 Difference]: Finished difference. Result has 52 places, 38 transitions, 106 flow [2023-08-04 06:05:42,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=52, PETRI_TRANSITIONS=38} [2023-08-04 06:05:42,527 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 5 predicate places. [2023-08-04 06:05:42,527 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 38 transitions, 106 flow [2023-08-04 06:05:42,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 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) [2023-08-04 06:05:42,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:05:42,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:05:42,538 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-04 06:05:42,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-08-04 06:05:42,735 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:05:42,736 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:05:42,736 INFO L85 PathProgramCache]: Analyzing trace with hash -424596187, now seen corresponding path program 1 times [2023-08-04 06:05:42,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:05:42,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888556156] [2023-08-04 06:05:42,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:05:42,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:05:42,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:05:42,803 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 06:05:42,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:05:42,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888556156] [2023-08-04 06:05:42,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888556156] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:05:42,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649633457] [2023-08-04 06:05:42,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:05:42,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:05:42,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:05:42,808 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 06:05:42,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-04 06:05:42,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:05:42,921 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 06:05:42,922 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:05:42,975 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 06:05:42,975 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 06:05:42,997 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 06:05:42,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1649633457] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 06:05:42,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 06:05:42,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 06:05:42,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123483700] [2023-08-04 06:05:42,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 06:05:42,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 06:05:42,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:05:43,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 06:05:43,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:05:43,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 291 [2023-08-04 06:05:43,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 38 transitions, 106 flow. Second operand has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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) [2023-08-04 06:05:43,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:05:43,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 291 [2023-08-04 06:05:43,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:05:43,043 INFO L124 PetriNetUnfolderBase]: 4/16 cut-off events. [2023-08-04 06:05:43,049 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:05:43,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 16 events. 4/16 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs, 0 based on Foata normal form. 3/19 useless extension candidates. Maximal degree in co-relation 36. Up to 10 conditions per place. [2023-08-04 06:05:43,050 INFO L140 encePairwiseOnDemand]: 288/291 looper letters, 0 selfloop transitions, 0 changer transitions 10/10 dead transitions. [2023-08-04 06:05:43,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 10 transitions, 43 flow [2023-08-04 06:05:43,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 06:05:43,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 06:05:43,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 558 transitions. [2023-08-04 06:05:43,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4793814432989691 [2023-08-04 06:05:43,052 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 558 transitions. [2023-08-04 06:05:43,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 558 transitions. [2023-08-04 06:05:43,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:05:43,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 558 transitions. [2023-08-04 06:05:43,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 139.5) internal successors, (558), 4 states have internal predecessors, (558), 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) [2023-08-04 06:05:43,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 291.0) internal successors, (1455), 5 states have internal predecessors, (1455), 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) [2023-08-04 06:05:43,057 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 291.0) internal successors, (1455), 5 states have internal predecessors, (1455), 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) [2023-08-04 06:05:43,057 INFO L175 Difference]: Start difference. First operand has 52 places, 38 transitions, 106 flow. Second operand 4 states and 558 transitions. [2023-08-04 06:05:43,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 10 transitions, 43 flow [2023-08-04 06:05:43,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 10 transitions, 41 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 06:05:43,058 INFO L231 Difference]: Finished difference. Result has 19 places, 0 transitions, 0 flow [2023-08-04 06:05:43,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=17, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=19, PETRI_TRANSITIONS=0} [2023-08-04 06:05:43,060 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -28 predicate places. [2023-08-04 06:05:43,060 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 0 transitions, 0 flow [2023-08-04 06:05:43,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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) [2023-08-04 06:05:43,063 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-04 06:05:43,063 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-04 06:05:43,064 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-08-04 06:05:43,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-04 06:05:43,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:05:43,270 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-04 06:05:43,272 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE (1/2) [2023-08-04 06:05:43,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 158 transitions, 336 flow [2023-08-04 06:05:43,360 INFO L124 PetriNetUnfolderBase]: 62/942 cut-off events. [2023-08-04 06:05:43,360 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:05:43,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 992 conditions, 942 events. 62/942 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 5878 event pairs, 0 based on Foata normal form. 0/826 useless extension candidates. Maximal degree in co-relation 547. Up to 32 conditions per place. [2023-08-04 06:05:43,362 INFO L82 GeneralOperation]: Start removeDead. Operand has 161 places, 158 transitions, 336 flow [2023-08-04 06:05:43,364 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 133 places, 127 transitions, 274 flow [2023-08-04 06:05:43,364 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 06:05:43,364 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 133 places, 127 transitions, 274 flow [2023-08-04 06:05:43,372 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 133 places, 127 transitions, 274 flow [2023-08-04 06:05:43,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 127 transitions, 274 flow [2023-08-04 06:05:43,448 INFO L124 PetriNetUnfolderBase]: 14/446 cut-off events. [2023-08-04 06:05:43,448 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:05:43,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 496 conditions, 446 events. 14/446 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2079 event pairs, 0 based on Foata normal form. 0/410 useless extension candidates. Maximal degree in co-relation 299. Up to 16 conditions per place. [2023-08-04 06:05:43,453 INFO L119 LiptonReduction]: Number of co-enabled transitions 2216 [2023-08-04 06:05:46,709 INFO L134 LiptonReduction]: Checked pairs total: 4705 [2023-08-04 06:05:46,710 INFO L136 LiptonReduction]: Total number of compositions: 101 [2023-08-04 06:05:46,711 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 06:05:46,712 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;@1f5b058, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 06:05:46,712 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 06:05:46,716 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 06:05:46,716 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2023-08-04 06:05:46,716 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:05:46,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:05:46,716 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 06:05:46,716 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 06:05:46,717 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:05:46,717 INFO L85 PathProgramCache]: Analyzing trace with hash 534762736, now seen corresponding path program 1 times [2023-08-04 06:05:46,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:05:46,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416304239] [2023-08-04 06:05:46,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:05:46,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:05:46,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 06:05:46,737 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 06:05:46,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 06:05:46,773 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 06:05:46,773 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 06:05:46,773 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-04 06:05:46,774 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-04 06:05:46,774 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-04 06:05:46,776 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-04 06:05:46,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-04 06:05:46,776 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 06:05:46,777 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN (2/2) [2023-08-04 06:05:46,778 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 06:05:46,778 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 06:05:46,814 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 06:05:46,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 201 places, 190 transitions, 428 flow [2023-08-04 06:05:47,314 INFO L124 PetriNetUnfolderBase]: 282/4406 cut-off events. [2023-08-04 06:05:47,315 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-04 06:05:47,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4695 conditions, 4406 events. 282/4406 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 43193 event pairs, 0 based on Foata normal form. 0/3869 useless extension candidates. Maximal degree in co-relation 3147. Up to 162 conditions per place. [2023-08-04 06:05:47,345 INFO L82 GeneralOperation]: Start removeDead. Operand has 201 places, 190 transitions, 428 flow [2023-08-04 06:05:47,360 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 198 places, 187 transitions, 410 flow [2023-08-04 06:05:47,360 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 06:05:47,360 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 198 places, 187 transitions, 410 flow [2023-08-04 06:05:47,360 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 198 places, 187 transitions, 410 flow [2023-08-04 06:05:47,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 187 transitions, 410 flow [2023-08-04 06:05:47,842 INFO L124 PetriNetUnfolderBase]: 282/4393 cut-off events. [2023-08-04 06:05:47,842 INFO L125 PetriNetUnfolderBase]: For 67/67 co-relation queries the response was YES. [2023-08-04 06:05:47,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4656 conditions, 4393 events. 282/4393 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 43014 event pairs, 0 based on Foata normal form. 0/3856 useless extension candidates. Maximal degree in co-relation 3135. Up to 162 conditions per place. [2023-08-04 06:05:47,961 INFO L119 LiptonReduction]: Number of co-enabled transitions 9528 [2023-08-04 06:05:51,528 INFO L134 LiptonReduction]: Checked pairs total: 25717 [2023-08-04 06:05:51,528 INFO L136 LiptonReduction]: Total number of compositions: 140 [2023-08-04 06:05:51,530 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 06:05:51,530 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;@1f5b058, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 06:05:51,530 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 06:05:51,534 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 06:05:51,534 INFO L124 PetriNetUnfolderBase]: 1/33 cut-off events. [2023-08-04 06:05:51,534 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-04 06:05:51,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:05:51,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:05:51,534 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 06:05:51,535 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:05:51,535 INFO L85 PathProgramCache]: Analyzing trace with hash 891291206, now seen corresponding path program 1 times [2023-08-04 06:05:51,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:05:51,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815102875] [2023-08-04 06:05:51,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:05:51,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:05:51,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:05:51,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 06:05:51,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:05:51,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815102875] [2023-08-04 06:05:51,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815102875] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:05:51,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 06:05:51,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 06:05:51,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430645491] [2023-08-04 06:05:51,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:05:51,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:05:51,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:05:51,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:05:51,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 06:05:51,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 330 [2023-08-04 06:05:51,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 64 transitions, 164 flow. Second operand has 3 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) [2023-08-04 06:05:51,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:05:51,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 330 [2023-08-04 06:05:51,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand