/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_mix008_power.oepc_pso.oepc_rmo.oepc_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 05:35:26,816 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 05:35:26,868 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 05:35:26,871 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 05:35:26,871 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 05:35:26,871 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 05:35:26,872 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 05:35:26,889 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 05:35:26,890 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 05:35:26,890 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 05:35:26,891 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 05:35:26,891 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 05:35:26,891 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 05:35:26,892 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 05:35:26,892 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 05:35:26,892 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 05:35:26,893 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 05:35:26,893 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 05:35:26,893 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 05:35:26,893 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 05:35:26,894 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 05:35:26,896 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 05:35:26,897 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 05:35:26,897 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 05:35:26,898 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 05:35:26,898 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 05:35:26,898 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 05:35:26,899 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 05:35:26,899 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 05:35:26,899 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 05:35:26,900 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 05:35:26,900 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 05:35:26,900 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 05:35:26,901 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 05:35:26,901 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 05:35:26,901 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 05:35:26,901 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 05:35:26,901 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 05:35:26,901 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 05:35:26,901 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 05:35:26,902 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 05:35:26,902 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 05:35:27,140 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 05:35:27,163 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 05:35:27,165 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 05:35:27,166 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 05:35:27,167 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 05:35:27,167 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix008_power.oepc_pso.oepc_rmo.oepc_bound2.i [2023-08-04 05:35:28,375 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 05:35:28,606 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 05:35:28,607 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix008_power.oepc_pso.oepc_rmo.oepc_bound2.i [2023-08-04 05:35:28,620 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/881ebe816/3f6881cb3843407ba8864bb6815a3caf/FLAGb897a5def [2023-08-04 05:35:28,631 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/881ebe816/3f6881cb3843407ba8864bb6815a3caf [2023-08-04 05:35:28,633 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 05:35:28,634 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 05:35:28,635 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 05:35:28,636 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 05:35:28,638 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 05:35:28,639 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 05:35:28" (1/1) ... [2023-08-04 05:35:28,639 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1eacfe72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:35:28, skipping insertion in model container [2023-08-04 05:35:28,640 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 05:35:28" (1/1) ... [2023-08-04 05:35:28,682 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 05:35:28,845 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_mix008_power.oepc_pso.oepc_rmo.oepc_bound2.i[969,982] [2023-08-04 05:35:29,050 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 05:35:29,059 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 05:35:29,072 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_mix008_power.oepc_pso.oepc_rmo.oepc_bound2.i[969,982] [2023-08-04 05:35:29,088 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 05:35:29,097 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 05:35:29,135 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 05:35:29,158 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 05:35:29,158 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 05:35:29,163 INFO L206 MainTranslator]: Completed translation [2023-08-04 05:35:29,163 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:35:29 WrapperNode [2023-08-04 05:35:29,164 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 05:35:29,164 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 05:35:29,165 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 05:35:29,165 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 05:35:29,169 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:35:29" (1/1) ... [2023-08-04 05:35:29,182 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:35:29" (1/1) ... [2023-08-04 05:35:29,204 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 177 [2023-08-04 05:35:29,205 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 05:35:29,205 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 05:35:29,205 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 05:35:29,206 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 05:35:29,214 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:35:29" (1/1) ... [2023-08-04 05:35:29,215 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:35:29" (1/1) ... [2023-08-04 05:35:29,219 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:35:29" (1/1) ... [2023-08-04 05:35:29,219 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:35:29" (1/1) ... [2023-08-04 05:35:29,227 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:35:29" (1/1) ... [2023-08-04 05:35:29,232 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:35:29" (1/1) ... [2023-08-04 05:35:29,235 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:35:29" (1/1) ... [2023-08-04 05:35:29,236 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:35:29" (1/1) ... [2023-08-04 05:35:29,240 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 05:35:29,243 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 05:35:29,243 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 05:35:29,243 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 05:35:29,244 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:35:29" (1/1) ... [2023-08-04 05:35:29,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 05:35:29,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 05:35:29,301 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 05:35:29,322 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 05:35:29,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 05:35:29,335 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 05:35:29,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 05:35:29,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 05:35:29,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 05:35:29,336 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-04 05:35:29,337 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-04 05:35:29,337 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-04 05:35:29,337 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-04 05:35:29,337 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-04 05:35:29,338 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-04 05:35:29,338 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-04 05:35:29,338 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-04 05:35:29,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 05:35:29,338 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 05:35:29,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 05:35:29,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 05:35:29,340 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 05:35:29,521 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 05:35:29,522 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 05:35:29,946 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 05:35:30,035 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 05:35:30,035 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-04 05:35:30,037 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 05:35:30 BoogieIcfgContainer [2023-08-04 05:35:30,037 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 05:35:30,039 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 05:35:30,039 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 05:35:30,042 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 05:35:30,042 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 05:35:28" (1/3) ... [2023-08-04 05:35:30,043 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51c6487f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 05:35:30, skipping insertion in model container [2023-08-04 05:35:30,043 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:35:29" (2/3) ... [2023-08-04 05:35:30,043 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51c6487f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 05:35:30, skipping insertion in model container [2023-08-04 05:35:30,043 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 05:35:30" (3/3) ... [2023-08-04 05:35:30,044 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_mix008_power.oepc_pso.oepc_rmo.oepc_bound2.i [2023-08-04 05:35:30,051 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 05:35:30,058 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 05:35:30,059 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-04 05:35:30,059 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 05:35:30,104 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 05:35:30,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 160 transitions, 340 flow [2023-08-04 05:35:30,310 INFO L124 PetriNetUnfolderBase]: 62/937 cut-off events. [2023-08-04 05:35:30,310 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:35:30,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 987 conditions, 937 events. 62/937 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5805 event pairs, 0 based on Foata normal form. 0/828 useless extension candidates. Maximal degree in co-relation 558. Up to 32 conditions per place. [2023-08-04 05:35:30,317 INFO L82 GeneralOperation]: Start removeDead. Operand has 163 places, 160 transitions, 340 flow [2023-08-04 05:35:30,324 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 163 places, 160 transitions, 340 flow [2023-08-04 05:35:30,327 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 05:35:30,334 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 163 places, 160 transitions, 340 flow [2023-08-04 05:35:30,337 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 163 places, 160 transitions, 340 flow [2023-08-04 05:35:30,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 160 transitions, 340 flow [2023-08-04 05:35:30,446 INFO L124 PetriNetUnfolderBase]: 62/937 cut-off events. [2023-08-04 05:35:30,446 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:35:30,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 987 conditions, 937 events. 62/937 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5805 event pairs, 0 based on Foata normal form. 0/828 useless extension candidates. Maximal degree in co-relation 558. Up to 32 conditions per place. [2023-08-04 05:35:30,461 INFO L119 LiptonReduction]: Number of co-enabled transitions 4642 [2023-08-04 05:35:34,268 INFO L134 LiptonReduction]: Checked pairs total: 13041 [2023-08-04 05:35:34,268 INFO L136 LiptonReduction]: Total number of compositions: 133 [2023-08-04 05:35:34,279 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 05:35:34,285 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;@737cbb3d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 05:35:34,285 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 05:35:34,288 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 05:35:34,288 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2023-08-04 05:35:34,288 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:35:34,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:35:34,289 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-04 05:35:34,289 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 05:35:34,293 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:35:34,293 INFO L85 PathProgramCache]: Analyzing trace with hash 20774068, now seen corresponding path program 1 times [2023-08-04 05:35:34,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:35:34,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152986156] [2023-08-04 05:35:34,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:35:34,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:35:34,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:35:34,582 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 05:35:34,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:35:34,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152986156] [2023-08-04 05:35:34,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152986156] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:35:34,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 05:35:34,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-04 05:35:34,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078966574] [2023-08-04 05:35:34,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:35:34,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:35:34,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:35:34,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:35:34,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 05:35:34,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 293 [2023-08-04 05:35:34,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 44 transitions, 108 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 05:35:34,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:35:34,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 293 [2023-08-04 05:35:34,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:35:36,773 INFO L124 PetriNetUnfolderBase]: 12873/19881 cut-off events. [2023-08-04 05:35:36,774 INFO L125 PetriNetUnfolderBase]: For 129/129 co-relation queries the response was YES. [2023-08-04 05:35:36,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38678 conditions, 19881 events. 12873/19881 cut-off events. For 129/129 co-relation queries the response was YES. Maximal size of possible extension queue 824. Compared 142340 event pairs, 3816 based on Foata normal form. 0/18056 useless extension candidates. Maximal degree in co-relation 32375. Up to 12394 conditions per place. [2023-08-04 05:35:36,890 INFO L140 encePairwiseOnDemand]: 289/293 looper letters, 56 selfloop transitions, 2 changer transitions 7/70 dead transitions. [2023-08-04 05:35:36,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 70 transitions, 291 flow [2023-08-04 05:35:36,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 05:35:36,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 05:35:36,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 484 transitions. [2023-08-04 05:35:36,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5506257110352674 [2023-08-04 05:35:36,904 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 484 transitions. [2023-08-04 05:35:36,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 484 transitions. [2023-08-04 05:35:36,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:35:36,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 484 transitions. [2023-08-04 05:35:36,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 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 05:35:36,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 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 05:35:36,916 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 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 05:35:36,917 INFO L175 Difference]: Start difference. First operand has 52 places, 44 transitions, 108 flow. Second operand 3 states and 484 transitions. [2023-08-04 05:35:36,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 70 transitions, 291 flow [2023-08-04 05:35:36,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 70 transitions, 291 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 05:35:36,922 INFO L231 Difference]: Finished difference. Result has 53 places, 37 transitions, 90 flow [2023-08-04 05:35:36,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=53, PETRI_TRANSITIONS=37} [2023-08-04 05:35:36,927 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 1 predicate places. [2023-08-04 05:35:36,927 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 37 transitions, 90 flow [2023-08-04 05:35:36,927 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 05:35:36,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:35:36,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:35:36,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 05:35:36,928 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 05:35:36,929 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:35:36,929 INFO L85 PathProgramCache]: Analyzing trace with hash 530828496, now seen corresponding path program 1 times [2023-08-04 05:35:36,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:35:36,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999719355] [2023-08-04 05:35:36,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:35:36,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:35:36,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:35:37,039 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 05:35:37,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:35:37,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999719355] [2023-08-04 05:35:37,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999719355] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:35:37,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 05:35:37,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 05:35:37,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958885872] [2023-08-04 05:35:37,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:35:37,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:35:37,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:35:37,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:35:37,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 05:35:37,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 293 [2023-08-04 05:35:37,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 37 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:35:37,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:35:37,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 293 [2023-08-04 05:35:37,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:35:38,743 INFO L124 PetriNetUnfolderBase]: 9395/13826 cut-off events. [2023-08-04 05:35:38,743 INFO L125 PetriNetUnfolderBase]: For 1036/1036 co-relation queries the response was YES. [2023-08-04 05:35:38,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28291 conditions, 13826 events. 9395/13826 cut-off events. For 1036/1036 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 84611 event pairs, 8432 based on Foata normal form. 0/12894 useless extension candidates. Maximal degree in co-relation 28275. Up to 13240 conditions per place. [2023-08-04 05:35:38,801 INFO L140 encePairwiseOnDemand]: 290/293 looper letters, 33 selfloop transitions, 2 changer transitions 1/41 dead transitions. [2023-08-04 05:35:38,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 41 transitions, 172 flow [2023-08-04 05:35:38,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 05:35:38,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 05:35:38,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 448 transitions. [2023-08-04 05:35:38,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5096700796359499 [2023-08-04 05:35:38,804 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 448 transitions. [2023-08-04 05:35:38,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 448 transitions. [2023-08-04 05:35:38,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:35:38,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 448 transitions. [2023-08-04 05:35:38,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 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 05:35:38,809 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 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 05:35:38,810 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 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 05:35:38,815 INFO L175 Difference]: Start difference. First operand has 53 places, 37 transitions, 90 flow. Second operand 3 states and 448 transitions. [2023-08-04 05:35:38,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 41 transitions, 172 flow [2023-08-04 05:35:38,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 41 transitions, 166 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 05:35:38,818 INFO L231 Difference]: Finished difference. Result has 49 places, 37 transitions, 94 flow [2023-08-04 05:35:38,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=49, PETRI_TRANSITIONS=37} [2023-08-04 05:35:38,819 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -3 predicate places. [2023-08-04 05:35:38,819 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 37 transitions, 94 flow [2023-08-04 05:35:38,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:35:38,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:35:38,819 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:35:38,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-04 05:35:38,820 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 05:35:38,820 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:35:38,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1867416938, now seen corresponding path program 1 times [2023-08-04 05:35:38,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:35:38,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636837438] [2023-08-04 05:35:38,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:35:38,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:35:38,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:35:38,897 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 05:35:38,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:35:38,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636837438] [2023-08-04 05:35:38,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636837438] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 05:35:38,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608726179] [2023-08-04 05:35:38,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:35:38,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:35:38,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 05:35:38,901 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 05:35:38,926 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 05:35:38,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:35:38,996 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 05:35:38,999 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 05:35:39,031 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 05:35:39,031 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 05:35:39,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [608726179] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:35:39,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 05:35:39,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 05:35:39,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635202320] [2023-08-04 05:35:39,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:35:39,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:35:39,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:35:39,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:35:39,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 05:35:39,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 293 [2023-08-04 05:35:39,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 37 transitions, 94 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 05:35:39,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:35:39,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 293 [2023-08-04 05:35:39,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:35:39,936 INFO L124 PetriNetUnfolderBase]: 7984/11661 cut-off events. [2023-08-04 05:35:39,937 INFO L125 PetriNetUnfolderBase]: For 54/54 co-relation queries the response was YES. [2023-08-04 05:35:39,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22962 conditions, 11661 events. 7984/11661 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 69099 event pairs, 5674 based on Foata normal form. 0/10925 useless extension candidates. Maximal degree in co-relation 22945. Up to 11037 conditions per place. [2023-08-04 05:35:39,988 INFO L140 encePairwiseOnDemand]: 290/293 looper letters, 36 selfloop transitions, 2 changer transitions 1/44 dead transitions. [2023-08-04 05:35:39,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 44 transitions, 186 flow [2023-08-04 05:35:39,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 05:35:39,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 05:35:39,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 451 transitions. [2023-08-04 05:35:39,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5130830489192264 [2023-08-04 05:35:39,991 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 451 transitions. [2023-08-04 05:35:39,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 451 transitions. [2023-08-04 05:35:39,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:35:39,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 451 transitions. [2023-08-04 05:35:39,992 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) [2023-08-04 05:35:39,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 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 05:35:39,995 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 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 05:35:39,995 INFO L175 Difference]: Start difference. First operand has 49 places, 37 transitions, 94 flow. Second operand 3 states and 451 transitions. [2023-08-04 05:35:39,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 44 transitions, 186 flow [2023-08-04 05:35:39,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 44 transitions, 182 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 05:35:39,997 INFO L231 Difference]: Finished difference. Result has 50 places, 37 transitions, 98 flow [2023-08-04 05:35:39,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=50, PETRI_TRANSITIONS=37} [2023-08-04 05:35:39,998 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -2 predicate places. [2023-08-04 05:35:39,998 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 37 transitions, 98 flow [2023-08-04 05:35:39,999 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 05:35:39,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:35:39,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:35:40,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-04 05:35:40,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:35:40,205 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 05:35:40,206 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:35:40,206 INFO L85 PathProgramCache]: Analyzing trace with hash -2117844604, now seen corresponding path program 1 times [2023-08-04 05:35:40,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:35:40,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117953449] [2023-08-04 05:35:40,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:35:40,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:35:40,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:35:40,296 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 05:35:40,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:35:40,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117953449] [2023-08-04 05:35:40,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117953449] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 05:35:40,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421420896] [2023-08-04 05:35:40,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:35:40,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:35:40,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 05:35:40,301 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 05:35:40,334 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 05:35:40,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:35:40,403 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 05:35:40,404 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 05:35:40,410 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 05:35:40,410 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 05:35:40,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1421420896] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:35:40,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 05:35:40,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 05:35:40,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049885717] [2023-08-04 05:35:40,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:35:40,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:35:40,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:35:40,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:35:40,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 05:35:40,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 293 [2023-08-04 05:35:40,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 37 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 05:35:40,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:35:40,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 293 [2023-08-04 05:35:40,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:35:41,154 INFO L124 PetriNetUnfolderBase]: 6824/9725 cut-off events. [2023-08-04 05:35:41,154 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2023-08-04 05:35:41,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19322 conditions, 9725 events. 6824/9725 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 55025 event pairs, 4904 based on Foata normal form. 0/9184 useless extension candidates. Maximal degree in co-relation 19305. Up to 9119 conditions per place. [2023-08-04 05:35:41,199 INFO L140 encePairwiseOnDemand]: 290/293 looper letters, 39 selfloop transitions, 2 changer transitions 1/47 dead transitions. [2023-08-04 05:35:41,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 47 transitions, 202 flow [2023-08-04 05:35:41,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 05:35:41,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 05:35:41,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 454 transitions. [2023-08-04 05:35:41,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5164960182025028 [2023-08-04 05:35:41,202 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 454 transitions. [2023-08-04 05:35:41,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 454 transitions. [2023-08-04 05:35:41,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:35:41,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 454 transitions. [2023-08-04 05:35:41,206 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 05:35:41,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 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 05:35:41,210 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 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 05:35:41,210 INFO L175 Difference]: Start difference. First operand has 50 places, 37 transitions, 98 flow. Second operand 3 states and 454 transitions. [2023-08-04 05:35:41,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 47 transitions, 202 flow [2023-08-04 05:35:41,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 47 transitions, 198 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 05:35:41,212 INFO L231 Difference]: Finished difference. Result has 51 places, 37 transitions, 102 flow [2023-08-04 05:35:41,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=51, PETRI_TRANSITIONS=37} [2023-08-04 05:35:41,214 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -1 predicate places. [2023-08-04 05:35:41,214 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 37 transitions, 102 flow [2023-08-04 05:35:41,214 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 05:35:41,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:35:41,214 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:35:41,220 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 05:35:41,419 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,SelfDestructingSolverStorable3 [2023-08-04 05:35:41,420 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 05:35:41,420 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:35:41,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1186194135, now seen corresponding path program 1 times [2023-08-04 05:35:41,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:35:41,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921115585] [2023-08-04 05:35:41,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:35:41,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:35:41,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:35:41,476 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 05:35:41,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:35:41,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921115585] [2023-08-04 05:35:41,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921115585] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 05:35:41,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200377316] [2023-08-04 05:35:41,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:35:41,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:35:41,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 05:35:41,479 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 05:35:41,506 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 05:35:41,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:35:41,577 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 05:35:41,578 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 05:35:41,584 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-04 05:35:41,585 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 05:35:41,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200377316] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:35:41,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 05:35:41,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 05:35:41,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684680585] [2023-08-04 05:35:41,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:35:41,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:35:41,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:35:41,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:35:41,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 05:35:41,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 293 [2023-08-04 05:35:41,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 37 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 05:35:41,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:35:41,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 293 [2023-08-04 05:35:41,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:35:42,368 INFO L124 PetriNetUnfolderBase]: 6392/8901 cut-off events. [2023-08-04 05:35:42,368 INFO L125 PetriNetUnfolderBase]: For 146/146 co-relation queries the response was YES. [2023-08-04 05:35:42,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18063 conditions, 8901 events. 6392/8901 cut-off events. For 146/146 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 46232 event pairs, 4872 based on Foata normal form. 0/8560 useless extension candidates. Maximal degree in co-relation 18045. Up to 7279 conditions per place. [2023-08-04 05:35:42,412 INFO L140 encePairwiseOnDemand]: 290/293 looper letters, 43 selfloop transitions, 2 changer transitions 1/51 dead transitions. [2023-08-04 05:35:42,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 51 transitions, 222 flow [2023-08-04 05:35:42,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 05:35:42,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 05:35:42,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 458 transitions. [2023-08-04 05:35:42,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5210466439135382 [2023-08-04 05:35:42,419 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 458 transitions. [2023-08-04 05:35:42,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 458 transitions. [2023-08-04 05:35:42,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:35:42,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 458 transitions. [2023-08-04 05:35:42,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 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 05:35:42,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 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 05:35:42,423 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 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 05:35:42,423 INFO L175 Difference]: Start difference. First operand has 51 places, 37 transitions, 102 flow. Second operand 3 states and 458 transitions. [2023-08-04 05:35:42,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 51 transitions, 222 flow [2023-08-04 05:35:42,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 51 transitions, 218 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 05:35:42,427 INFO L231 Difference]: Finished difference. Result has 52 places, 37 transitions, 106 flow [2023-08-04 05:35:42,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=52, PETRI_TRANSITIONS=37} [2023-08-04 05:35:42,429 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 0 predicate places. [2023-08-04 05:35:42,429 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 37 transitions, 106 flow [2023-08-04 05:35:42,429 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 05:35:42,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:35:42,430 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:35:42,438 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 05:35:42,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:35:42,635 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 05:35:42,635 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:35:42,635 INFO L85 PathProgramCache]: Analyzing trace with hash 565567104, now seen corresponding path program 1 times [2023-08-04 05:35:42,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:35:42,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751502405] [2023-08-04 05:35:42,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:35:42,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:35:42,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:35:42,686 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-04 05:35:42,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:35:42,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751502405] [2023-08-04 05:35:42,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751502405] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 05:35:42,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933333735] [2023-08-04 05:35:42,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:35:42,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:35:42,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 05:35:42,689 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 05:35:42,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-04 05:35:42,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:35:42,819 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 05:35:42,820 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 05:35:42,849 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-04 05:35:42,849 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 05:35:42,865 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-04 05:35:42,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933333735] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 05:35:42,866 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 05:35:42,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 05:35:42,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927998109] [2023-08-04 05:35:42,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 05:35:42,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 05:35:42,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:35:42,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 05:35:42,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 05:35:42,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 293 [2023-08-04 05:35:42,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 37 transitions, 106 flow. Second operand has 5 states, 5 states have (on average 140.6) internal successors, (703), 5 states have internal predecessors, (703), 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 05:35:42,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:35:42,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 293 [2023-08-04 05:35:42,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:35:42,903 INFO L124 PetriNetUnfolderBase]: 6/21 cut-off events. [2023-08-04 05:35:42,904 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:35:42,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 21 events. 6/21 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 31 event pairs, 0 based on Foata normal form. 4/25 useless extension candidates. Maximal degree in co-relation 47. Up to 14 conditions per place. [2023-08-04 05:35:42,904 INFO L140 encePairwiseOnDemand]: 290/293 looper letters, 0 selfloop transitions, 0 changer transitions 12/12 dead transitions. [2023-08-04 05:35:42,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 12 transitions, 51 flow [2023-08-04 05:35:42,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 05:35:42,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 05:35:42,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 556 transitions. [2023-08-04 05:35:42,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47440273037542663 [2023-08-04 05:35:42,906 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 556 transitions. [2023-08-04 05:35:42,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 556 transitions. [2023-08-04 05:35:42,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:35:42,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 556 transitions. [2023-08-04 05:35:42,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 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 05:35:42,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 293.0) internal successors, (1465), 5 states have internal predecessors, (1465), 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 05:35:42,911 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 293.0) internal successors, (1465), 5 states have internal predecessors, (1465), 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 05:35:42,911 INFO L175 Difference]: Start difference. First operand has 52 places, 37 transitions, 106 flow. Second operand 4 states and 556 transitions. [2023-08-04 05:35:42,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 12 transitions, 51 flow [2023-08-04 05:35:42,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 12 transitions, 49 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 05:35:42,912 INFO L231 Difference]: Finished difference. Result has 21 places, 0 transitions, 0 flow [2023-08-04 05:35:42,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=19, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=21, PETRI_TRANSITIONS=0} [2023-08-04 05:35:42,913 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -31 predicate places. [2023-08-04 05:35:42,913 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 0 transitions, 0 flow [2023-08-04 05:35:42,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 140.6) internal successors, (703), 5 states have internal predecessors, (703), 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 05:35:42,915 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-04 05:35:42,916 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-04 05:35:42,916 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-08-04 05:35:42,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-04 05:35:43,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:35:43,122 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-08-04 05:35:43,123 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE (1/2) [2023-08-04 05:35:43,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 160 transitions, 340 flow [2023-08-04 05:35:43,208 INFO L124 PetriNetUnfolderBase]: 62/937 cut-off events. [2023-08-04 05:35:43,209 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:35:43,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 987 conditions, 937 events. 62/937 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5805 event pairs, 0 based on Foata normal form. 0/828 useless extension candidates. Maximal degree in co-relation 558. Up to 32 conditions per place. [2023-08-04 05:35:43,210 INFO L82 GeneralOperation]: Start removeDead. Operand has 163 places, 160 transitions, 340 flow [2023-08-04 05:35:43,212 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 135 places, 129 transitions, 278 flow [2023-08-04 05:35:43,212 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 05:35:43,212 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 135 places, 129 transitions, 278 flow [2023-08-04 05:35:43,213 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 135 places, 129 transitions, 278 flow [2023-08-04 05:35:43,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 135 places, 129 transitions, 278 flow [2023-08-04 05:35:43,246 INFO L124 PetriNetUnfolderBase]: 14/441 cut-off events. [2023-08-04 05:35:43,246 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:35:43,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 491 conditions, 441 events. 14/441 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2041 event pairs, 0 based on Foata normal form. 0/412 useless extension candidates. Maximal degree in co-relation 310. Up to 16 conditions per place. [2023-08-04 05:35:43,251 INFO L119 LiptonReduction]: Number of co-enabled transitions 2720 [2023-08-04 05:35:46,428 INFO L134 LiptonReduction]: Checked pairs total: 7070 [2023-08-04 05:35:46,428 INFO L136 LiptonReduction]: Total number of compositions: 99 [2023-08-04 05:35:46,429 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 05:35:46,430 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;@737cbb3d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 05:35:46,430 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 05:35:46,433 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 05:35:46,433 INFO L124 PetriNetUnfolderBase]: 0/20 cut-off events. [2023-08-04 05:35:46,433 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:35:46,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:35:46,433 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 05:35:46,434 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 05:35:46,434 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:35:46,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1425095695, now seen corresponding path program 1 times [2023-08-04 05:35:46,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:35:46,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550427022] [2023-08-04 05:35:46,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:35:46,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:35:46,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 05:35:46,448 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 05:35:46,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 05:35:46,468 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 05:35:46,469 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 05:35:46,469 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-04 05:35:46,469 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-04 05:35:46,469 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-04 05:35:46,469 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-04 05:35:46,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-04 05:35:46,470 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 05:35:46,470 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN (2/2) [2023-08-04 05:35:46,470 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 05:35:46,471 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 05:35:46,496 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 05:35:46,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 206 places, 195 transitions, 438 flow [2023-08-04 05:35:46,910 INFO L124 PetriNetUnfolderBase]: 282/4343 cut-off events. [2023-08-04 05:35:46,910 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-04 05:35:46,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4632 conditions, 4343 events. 282/4343 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 42243 event pairs, 0 based on Foata normal form. 0/3858 useless extension candidates. Maximal degree in co-relation 3138. Up to 162 conditions per place. [2023-08-04 05:35:46,934 INFO L82 GeneralOperation]: Start removeDead. Operand has 206 places, 195 transitions, 438 flow [2023-08-04 05:35:46,942 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 206 places, 195 transitions, 438 flow [2023-08-04 05:35:46,943 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 05:35:46,943 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 206 places, 195 transitions, 438 flow [2023-08-04 05:35:46,943 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 206 places, 195 transitions, 438 flow [2023-08-04 05:35:46,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 206 places, 195 transitions, 438 flow [2023-08-04 05:35:47,300 INFO L124 PetriNetUnfolderBase]: 282/4343 cut-off events. [2023-08-04 05:35:47,300 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-04 05:35:47,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4632 conditions, 4343 events. 282/4343 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 42243 event pairs, 0 based on Foata normal form. 0/3858 useless extension candidates. Maximal degree in co-relation 3138. Up to 162 conditions per place. [2023-08-04 05:35:47,386 INFO L119 LiptonReduction]: Number of co-enabled transitions 11452 [2023-08-04 05:35:50,786 INFO L134 LiptonReduction]: Checked pairs total: 35613 [2023-08-04 05:35:50,786 INFO L136 LiptonReduction]: Total number of compositions: 142 [2023-08-04 05:35:50,788 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 05:35:50,788 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;@737cbb3d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 05:35:50,789 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 05:35:50,790 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 05:35:50,790 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2023-08-04 05:35:50,790 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:35:50,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:35:50,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-04 05:35:50,791 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 05:35:50,791 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:35:50,791 INFO L85 PathProgramCache]: Analyzing trace with hash 35238402, now seen corresponding path program 1 times [2023-08-04 05:35:50,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:35:50,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420398529] [2023-08-04 05:35:50,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:35:50,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:35:50,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:35:50,860 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 05:35:50,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:35:50,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420398529] [2023-08-04 05:35:50,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420398529] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:35:50,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 05:35:50,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-04 05:35:50,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648687552] [2023-08-04 05:35:50,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:35:50,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:35:50,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:35:50,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:35:50,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 05:35:50,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 337 [2023-08-04 05:35:50,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 71 transitions, 190 flow. Second operand has 3 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 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 05:35:50,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:35:50,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 337 [2023-08-04 05:35:50,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand