/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix039.oepc_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 06:05:15,990 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 06:05:16,048 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 06:05:16,055 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 06:05:16,055 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 06:05:16,055 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 06:05:16,056 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 06:05:16,082 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 06:05:16,082 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 06:05:16,085 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 06:05:16,086 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 06:05:16,086 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 06:05:16,086 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 06:05:16,087 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 06:05:16,087 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 06:05:16,087 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 06:05:16,088 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 06:05:16,088 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 06:05:16,088 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 06:05:16,088 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 06:05:16,088 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 06:05:16,088 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 06:05:16,089 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 06:05:16,089 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 06:05:16,089 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 06:05:16,089 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 06:05:16,089 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 06:05:16,089 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 06:05:16,090 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 06:05:16,090 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 06:05:16,090 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 06:05:16,091 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 06:05:16,091 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 06:05:16,091 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 06:05:16,091 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 06:05:16,091 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 06:05:16,091 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 06:05:16,091 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 06:05:16,091 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 06:05:16,091 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 06:05:16,092 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 06:05:16,092 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 06:05:16,294 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 06:05:16,314 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 06:05:16,316 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 06:05:16,317 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 06:05:16,317 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 06:05:16,318 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix039.oepc_bound2.i [2023-08-04 06:05:17,328 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 06:05:17,517 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 06:05:17,518 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix039.oepc_bound2.i [2023-08-04 06:05:17,528 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/569f2a1bc/28eaf5a3eb174a1f8dc0ed813a1c8927/FLAG944530def [2023-08-04 06:05:17,537 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/569f2a1bc/28eaf5a3eb174a1f8dc0ed813a1c8927 [2023-08-04 06:05:17,539 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 06:05:17,540 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 06:05:17,541 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 06:05:17,541 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 06:05:17,546 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 06:05:17,547 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 06:05:17" (1/1) ... [2023-08-04 06:05:17,547 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32a399a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:05:17, skipping insertion in model container [2023-08-04 06:05:17,547 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 06:05:17" (1/1) ... [2023-08-04 06:05:17,579 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 06:05:17,720 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix039.oepc_bound2.i[945,958] [2023-08-04 06:05:17,895 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 06:05:17,909 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 06:05:17,919 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix039.oepc_bound2.i[945,958] [2023-08-04 06:05:17,935 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 06:05:17,936 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 06:05:17,970 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 06:05:17,996 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 06:05:17,997 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 06:05:18,002 INFO L206 MainTranslator]: Completed translation [2023-08-04 06:05:18,002 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:05:18 WrapperNode [2023-08-04 06:05:18,003 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 06:05:18,004 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 06:05:18,004 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 06:05:18,004 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 06:05:18,009 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:05:18" (1/1) ... [2023-08-04 06:05:18,029 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:05:18" (1/1) ... [2023-08-04 06:05:18,055 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 178 [2023-08-04 06:05:18,055 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 06:05:18,056 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 06:05:18,056 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 06:05:18,056 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 06:05:18,070 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:05:18" (1/1) ... [2023-08-04 06:05:18,070 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:05:18" (1/1) ... [2023-08-04 06:05:18,074 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:05:18" (1/1) ... [2023-08-04 06:05:18,074 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:05:18" (1/1) ... [2023-08-04 06:05:18,082 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:05:18" (1/1) ... [2023-08-04 06:05:18,084 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:05:18" (1/1) ... [2023-08-04 06:05:18,086 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:05:18" (1/1) ... [2023-08-04 06:05:18,088 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:05:18" (1/1) ... [2023-08-04 06:05:18,091 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 06:05:18,092 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 06:05:18,092 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 06:05:18,092 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 06:05:18,093 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:05:18" (1/1) ... [2023-08-04 06:05:18,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 06:05:18,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:05:18,132 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-04 06:05:18,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-04 06:05:18,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 06:05:18,162 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 06:05:18,162 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 06:05:18,162 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 06:05:18,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 06:05:18,163 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-04 06:05:18,163 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-04 06:05:18,164 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-04 06:05:18,164 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-04 06:05:18,164 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-04 06:05:18,164 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-04 06:05:18,164 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-04 06:05:18,164 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-04 06:05:18,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 06:05:18,164 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 06:05:18,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 06:05:18,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 06:05:18,166 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-04 06:05:18,278 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 06:05:18,280 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 06:05:18,692 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 06:05:18,771 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 06:05:18,771 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-04 06:05:18,773 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 06:05:18 BoogieIcfgContainer [2023-08-04 06:05:18,773 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 06:05:18,775 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 06:05:18,775 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 06:05:18,777 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 06:05:18,777 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 06:05:17" (1/3) ... [2023-08-04 06:05:18,778 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@483c767c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 06:05:18, skipping insertion in model container [2023-08-04 06:05:18,778 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:05:18" (2/3) ... [2023-08-04 06:05:18,778 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@483c767c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 06:05:18, skipping insertion in model container [2023-08-04 06:05:18,778 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 06:05:18" (3/3) ... [2023-08-04 06:05:18,779 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_mix039.oepc_bound2.i [2023-08-04 06:05:18,786 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 06:05:18,794 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 06:05:18,794 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-04 06:05:18,794 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 06:05:18,845 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 06:05:18,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 164 places, 161 transitions, 342 flow [2023-08-04 06:05:19,062 INFO L124 PetriNetUnfolderBase]: 62/942 cut-off events. [2023-08-04 06:05:19,063 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:05:19,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 992 conditions, 942 events. 62/942 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 5849 event pairs, 0 based on Foata normal form. 0/833 useless extension candidates. Maximal degree in co-relation 555. Up to 32 conditions per place. [2023-08-04 06:05:19,072 INFO L82 GeneralOperation]: Start removeDead. Operand has 164 places, 161 transitions, 342 flow [2023-08-04 06:05:19,079 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 164 places, 161 transitions, 342 flow [2023-08-04 06:05:19,082 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 06:05:19,090 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 164 places, 161 transitions, 342 flow [2023-08-04 06:05:19,094 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 164 places, 161 transitions, 342 flow [2023-08-04 06:05:19,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 164 places, 161 transitions, 342 flow [2023-08-04 06:05:19,190 INFO L124 PetriNetUnfolderBase]: 62/942 cut-off events. [2023-08-04 06:05:19,190 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:05:19,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 992 conditions, 942 events. 62/942 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 5849 event pairs, 0 based on Foata normal form. 0/833 useless extension candidates. Maximal degree in co-relation 555. Up to 32 conditions per place. [2023-08-04 06:05:19,206 INFO L119 LiptonReduction]: Number of co-enabled transitions 4610 [2023-08-04 06:05:22,430 INFO L134 LiptonReduction]: Checked pairs total: 11307 [2023-08-04 06:05:22,430 INFO L136 LiptonReduction]: Total number of compositions: 133 [2023-08-04 06:05:22,445 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 06:05:22,451 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;@4a98b6ea, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 06:05:22,451 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 06:05:22,455 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 06:05:22,455 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-08-04 06:05:22,455 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:05:22,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:05:22,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-04 06:05:22,456 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:05:22,460 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:05:22,460 INFO L85 PathProgramCache]: Analyzing trace with hash 20835630, now seen corresponding path program 1 times [2023-08-04 06:05:22,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:05:22,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954607592] [2023-08-04 06:05:22,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:05:22,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:05:22,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:05:22,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 06:05:22,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:05:22,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954607592] [2023-08-04 06:05:22,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954607592] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:05:22,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 06:05:22,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-04 06:05:22,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577615278] [2023-08-04 06:05:22,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:05:22,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:05:22,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:05:22,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:05:22,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 06:05:22,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 294 [2023-08-04 06:05:22,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 43 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:05:22,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:05:22,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 294 [2023-08-04 06:05:22,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:05:24,836 INFO L124 PetriNetUnfolderBase]: 12873/19865 cut-off events. [2023-08-04 06:05:24,837 INFO L125 PetriNetUnfolderBase]: For 129/129 co-relation queries the response was YES. [2023-08-04 06:05:24,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38662 conditions, 19865 events. 12873/19865 cut-off events. For 129/129 co-relation queries the response was YES. Maximal size of possible extension queue 763. Compared 140152 event pairs, 3816 based on Foata normal form. 0/18192 useless extension candidates. Maximal degree in co-relation 32367. Up to 12394 conditions per place. [2023-08-04 06:05:24,937 INFO L140 encePairwiseOnDemand]: 290/294 looper letters, 56 selfloop transitions, 2 changer transitions 7/69 dead transitions. [2023-08-04 06:05:24,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 69 transitions, 289 flow [2023-08-04 06:05:24,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:05:24,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:05:24,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 487 transitions. [2023-08-04 06:05:24,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5521541950113379 [2023-08-04 06:05:24,952 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 487 transitions. [2023-08-04 06:05:24,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 487 transitions. [2023-08-04 06:05:24,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:05:24,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 487 transitions. [2023-08-04 06:05:24,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:05:24,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 294.0) internal successors, (1176), 4 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:05:24,965 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 294.0) internal successors, (1176), 4 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:05:24,966 INFO L175 Difference]: Start difference. First operand has 51 places, 43 transitions, 106 flow. Second operand 3 states and 487 transitions. [2023-08-04 06:05:24,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 69 transitions, 289 flow [2023-08-04 06:05:24,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 69 transitions, 289 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 06:05:24,971 INFO L231 Difference]: Finished difference. Result has 52 places, 36 transitions, 88 flow [2023-08-04 06:05:24,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=294, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=52, PETRI_TRANSITIONS=36} [2023-08-04 06:05:24,975 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 1 predicate places. [2023-08-04 06:05:24,975 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 36 transitions, 88 flow [2023-08-04 06:05:24,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:05:24,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:05:24,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:05:24,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 06:05:24,976 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:05:24,982 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:05:24,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1844074159, now seen corresponding path program 1 times [2023-08-04 06:05:24,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:05:24,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802870505] [2023-08-04 06:05:24,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:05:24,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:05:25,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:05:25,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 06:05:25,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:05:25,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802870505] [2023-08-04 06:05:25,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802870505] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:05:25,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 06:05:25,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 06:05:25,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940057700] [2023-08-04 06:05:25,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:05:25,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:05:25,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:05:25,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:05:25,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 06:05:25,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 294 [2023-08-04 06:05:25,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 36 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:05:25,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:05:25,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 294 [2023-08-04 06:05:25,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:05:26,690 INFO L124 PetriNetUnfolderBase]: 9395/13730 cut-off events. [2023-08-04 06:05:26,690 INFO L125 PetriNetUnfolderBase]: For 1036/1036 co-relation queries the response was YES. [2023-08-04 06:05:26,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28195 conditions, 13730 events. 9395/13730 cut-off events. For 1036/1036 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 82207 event pairs, 8432 based on Foata normal form. 0/12970 useless extension candidates. Maximal degree in co-relation 28179. Up to 13240 conditions per place. [2023-08-04 06:05:26,757 INFO L140 encePairwiseOnDemand]: 291/294 looper letters, 33 selfloop transitions, 2 changer transitions 1/40 dead transitions. [2023-08-04 06:05:26,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 40 transitions, 170 flow [2023-08-04 06:05:26,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:05:26,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:05:26,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 451 transitions. [2023-08-04 06:05:26,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5113378684807256 [2023-08-04 06:05:26,759 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 451 transitions. [2023-08-04 06:05:26,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 451 transitions. [2023-08-04 06:05:26,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:05:26,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 451 transitions. [2023-08-04 06:05:26,760 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 06:05:26,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 294.0) internal successors, (1176), 4 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:05:26,762 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 294.0) internal successors, (1176), 4 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:05:26,762 INFO L175 Difference]: Start difference. First operand has 52 places, 36 transitions, 88 flow. Second operand 3 states and 451 transitions. [2023-08-04 06:05:26,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 40 transitions, 170 flow [2023-08-04 06:05:26,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 40 transitions, 164 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 06:05:26,764 INFO L231 Difference]: Finished difference. Result has 48 places, 36 transitions, 92 flow [2023-08-04 06:05:26,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=294, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=48, PETRI_TRANSITIONS=36} [2023-08-04 06:05:26,765 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -3 predicate places. [2023-08-04 06:05:26,765 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 36 transitions, 92 flow [2023-08-04 06:05:26,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:05:26,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:05:26,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:05:26,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-04 06:05:26,766 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:05:26,766 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:05:26,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1214620135, now seen corresponding path program 1 times [2023-08-04 06:05:26,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:05:26,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381834338] [2023-08-04 06:05:26,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:05:26,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:05:26,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:05:26,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 06:05:26,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:05:26,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381834338] [2023-08-04 06:05:26,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381834338] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:05:26,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077426264] [2023-08-04 06:05:26,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:05:26,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:05:26,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:05:26,848 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 06:05:26,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-04 06:05:26,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:05:26,951 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 06:05:26,954 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:05:26,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 06:05:26,964 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 06:05:26,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077426264] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:05:26,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 06:05:26,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 06:05:26,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903510137] [2023-08-04 06:05:26,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:05:26,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:05:26,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:05:26,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:05:26,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:05:26,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 294 [2023-08-04 06:05:26,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 36 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:05:26,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:05:26,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 294 [2023-08-04 06:05:26,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:05:27,930 INFO L124 PetriNetUnfolderBase]: 7984/11499 cut-off events. [2023-08-04 06:05:27,931 INFO L125 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES. [2023-08-04 06:05:27,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22800 conditions, 11499 events. 7984/11499 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 65832 event pairs, 5674 based on Foata normal form. 0/10826 useless extension candidates. Maximal degree in co-relation 22783. Up to 11037 conditions per place. [2023-08-04 06:05:27,983 INFO L140 encePairwiseOnDemand]: 291/294 looper letters, 36 selfloop transitions, 2 changer transitions 1/43 dead transitions. [2023-08-04 06:05:27,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 43 transitions, 184 flow [2023-08-04 06:05:27,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:05:27,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:05:27,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 454 transitions. [2023-08-04 06:05:27,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5147392290249433 [2023-08-04 06:05:27,985 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 454 transitions. [2023-08-04 06:05:27,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 454 transitions. [2023-08-04 06:05:27,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:05:27,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 454 transitions. [2023-08-04 06:05:27,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:05:27,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 294.0) internal successors, (1176), 4 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:05:27,988 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 294.0) internal successors, (1176), 4 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:05:27,989 INFO L175 Difference]: Start difference. First operand has 48 places, 36 transitions, 92 flow. Second operand 3 states and 454 transitions. [2023-08-04 06:05:27,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 43 transitions, 184 flow [2023-08-04 06:05:27,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 43 transitions, 180 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 06:05:27,990 INFO L231 Difference]: Finished difference. Result has 49 places, 36 transitions, 96 flow [2023-08-04 06:05:27,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=294, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=49, PETRI_TRANSITIONS=36} [2023-08-04 06:05:27,991 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -2 predicate places. [2023-08-04 06:05:27,992 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 36 transitions, 96 flow [2023-08-04 06:05:27,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:05:27,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:05:27,992 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:05:27,999 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 06:05:28,197 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 06:05:28,198 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:05:28,198 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:05:28,199 INFO L85 PathProgramCache]: Analyzing trace with hash 682415542, now seen corresponding path program 1 times [2023-08-04 06:05:28,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:05:28,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512511436] [2023-08-04 06:05:28,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:05:28,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:05:28,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:05:28,336 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 06:05:28,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:05:28,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512511436] [2023-08-04 06:05:28,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512511436] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:05:28,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692599254] [2023-08-04 06:05:28,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:05:28,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:05:28,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:05:28,351 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 06:05:28,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-04 06:05:28,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:05:28,432 INFO L262 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 06:05:28,433 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:05:28,438 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 06:05:28,438 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 06:05:28,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692599254] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:05:28,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 06:05:28,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 06:05:28,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032300993] [2023-08-04 06:05:28,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:05:28,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:05:28,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:05:28,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:05:28,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:05:28,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 294 [2023-08-04 06:05:28,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 36 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:05:28,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:05:28,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 294 [2023-08-04 06:05:28,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:05:29,197 INFO L124 PetriNetUnfolderBase]: 6824/9699 cut-off events. [2023-08-04 06:05:29,198 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-04 06:05:29,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19296 conditions, 9699 events. 6824/9699 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 53567 event pairs, 4904 based on Foata normal form. 0/9182 useless extension candidates. Maximal degree in co-relation 19279. Up to 9119 conditions per place. [2023-08-04 06:05:29,234 INFO L140 encePairwiseOnDemand]: 291/294 looper letters, 39 selfloop transitions, 2 changer transitions 1/46 dead transitions. [2023-08-04 06:05:29,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 46 transitions, 200 flow [2023-08-04 06:05:29,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:05:29,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:05:29,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 457 transitions. [2023-08-04 06:05:29,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.518140589569161 [2023-08-04 06:05:29,236 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 457 transitions. [2023-08-04 06:05:29,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 457 transitions. [2023-08-04 06:05:29,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:05:29,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 457 transitions. [2023-08-04 06:05:29,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:05:29,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 294.0) internal successors, (1176), 4 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:05:29,239 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 294.0) internal successors, (1176), 4 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:05:29,240 INFO L175 Difference]: Start difference. First operand has 49 places, 36 transitions, 96 flow. Second operand 3 states and 457 transitions. [2023-08-04 06:05:29,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 46 transitions, 200 flow [2023-08-04 06:05:29,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 46 transitions, 196 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 06:05:29,257 INFO L231 Difference]: Finished difference. Result has 50 places, 36 transitions, 100 flow [2023-08-04 06:05:29,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=294, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=50, PETRI_TRANSITIONS=36} [2023-08-04 06:05:29,258 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -1 predicate places. [2023-08-04 06:05:29,258 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 36 transitions, 100 flow [2023-08-04 06:05:29,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:05:29,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:05:29,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:05:29,280 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-04 06:05:29,459 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 06:05:29,460 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:05:29,460 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:05:29,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1931043469, now seen corresponding path program 1 times [2023-08-04 06:05:29,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:05:29,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557345335] [2023-08-04 06:05:29,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:05:29,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:05:29,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:05:29,514 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 06:05:29,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:05:29,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557345335] [2023-08-04 06:05:29,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557345335] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:05:29,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058944699] [2023-08-04 06:05:29,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:05:29,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:05:29,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:05:29,517 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 06:05:29,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-04 06:05:29,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:05:29,654 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 06:05:29,655 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:05:29,662 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 06:05:29,662 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 06:05:29,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058944699] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:05:29,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 06:05:29,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 06:05:29,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673030898] [2023-08-04 06:05:29,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:05:29,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:05:29,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:05:29,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:05:29,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:05:29,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 294 [2023-08-04 06:05:29,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 36 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:05:29,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:05:29,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 294 [2023-08-04 06:05:29,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:05:30,534 INFO L124 PetriNetUnfolderBase]: 6392/8819 cut-off events. [2023-08-04 06:05:30,534 INFO L125 PetriNetUnfolderBase]: For 108/108 co-relation queries the response was YES. [2023-08-04 06:05:30,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17981 conditions, 8819 events. 6392/8819 cut-off events. For 108/108 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 44409 event pairs, 4872 based on Foata normal form. 0/8478 useless extension candidates. Maximal degree in co-relation 17963. Up to 7279 conditions per place. [2023-08-04 06:05:30,565 INFO L140 encePairwiseOnDemand]: 291/294 looper letters, 43 selfloop transitions, 2 changer transitions 1/50 dead transitions. [2023-08-04 06:05:30,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 50 transitions, 220 flow [2023-08-04 06:05:30,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:05:30,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:05:30,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 461 transitions. [2023-08-04 06:05:30,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5226757369614512 [2023-08-04 06:05:30,567 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 461 transitions. [2023-08-04 06:05:30,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 461 transitions. [2023-08-04 06:05:30,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:05:30,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 461 transitions. [2023-08-04 06:05:30,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:05:30,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 294.0) internal successors, (1176), 4 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:05:30,570 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 294.0) internal successors, (1176), 4 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:05:30,570 INFO L175 Difference]: Start difference. First operand has 50 places, 36 transitions, 100 flow. Second operand 3 states and 461 transitions. [2023-08-04 06:05:30,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 50 transitions, 220 flow [2023-08-04 06:05:30,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 50 transitions, 216 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 06:05:30,572 INFO L231 Difference]: Finished difference. Result has 51 places, 36 transitions, 104 flow [2023-08-04 06:05:30,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=294, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=51, PETRI_TRANSITIONS=36} [2023-08-04 06:05:30,573 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 0 predicate places. [2023-08-04 06:05:30,573 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 36 transitions, 104 flow [2023-08-04 06:05:30,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:05:30,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:05:30,573 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 06:05:30,584 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-04 06:05:30,782 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 06:05:30,782 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:05:30,783 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:05:30,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1784478551, now seen corresponding path program 1 times [2023-08-04 06:05:30,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:05:30,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454672045] [2023-08-04 06:05:30,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:05:30,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:05:30,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:05:30,840 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 06:05:30,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:05:30,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454672045] [2023-08-04 06:05:30,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454672045] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:05:30,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919811198] [2023-08-04 06:05:30,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:05:30,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:05:30,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:05:30,842 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 06:05:30,844 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 06:05:30,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:05:30,923 INFO L262 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 06:05:30,924 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:05:30,946 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 06:05:30,946 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 06:05:30,964 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 06:05:30,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919811198] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 06:05:30,964 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 06:05:30,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 06:05:30,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757606126] [2023-08-04 06:05:30,965 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 06:05:30,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 06:05:30,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:05:30,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 06:05:30,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:05:30,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 294 [2023-08-04 06:05:30,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 36 transitions, 104 flow. Second operand has 5 states, 5 states have (on average 141.6) internal successors, (708), 5 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:05:30,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:05:30,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 294 [2023-08-04 06:05:30,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:05:30,992 INFO L124 PetriNetUnfolderBase]: 6/21 cut-off events. [2023-08-04 06:05:30,993 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-04 06:05:30,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 21 events. 6/21 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 26 event pairs, 2 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 06:05:30,993 INFO L140 encePairwiseOnDemand]: 291/294 looper letters, 0 selfloop transitions, 0 changer transitions 12/12 dead transitions. [2023-08-04 06:05:30,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 12 transitions, 51 flow [2023-08-04 06:05:30,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 06:05:30,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 06:05:30,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 560 transitions. [2023-08-04 06:05:30,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2023-08-04 06:05:30,995 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 560 transitions. [2023-08-04 06:05:30,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 560 transitions. [2023-08-04 06:05:30,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:05:30,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 560 transitions. [2023-08-04 06:05:30,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:05:30,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 294.0) internal successors, (1470), 5 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:05:31,000 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 294.0) internal successors, (1470), 5 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:05:31,000 INFO L175 Difference]: Start difference. First operand has 51 places, 36 transitions, 104 flow. Second operand 4 states and 560 transitions. [2023-08-04 06:05:31,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 12 transitions, 51 flow [2023-08-04 06:05:31,001 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 06:05:31,001 INFO L231 Difference]: Finished difference. Result has 21 places, 0 transitions, 0 flow [2023-08-04 06:05:31,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=294, 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 06:05:31,003 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -30 predicate places. [2023-08-04 06:05:31,004 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 0 transitions, 0 flow [2023-08-04 06:05:31,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 141.6) internal successors, (708), 5 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:05:31,006 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-04 06:05:31,007 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-04 06:05:31,007 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-08-04 06:05:31,017 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 06:05:31,212 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 06:05:31,213 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-08-04 06:05:31,215 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE (1/2) [2023-08-04 06:05:31,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 164 places, 161 transitions, 342 flow [2023-08-04 06:05:31,269 INFO L124 PetriNetUnfolderBase]: 62/942 cut-off events. [2023-08-04 06:05:31,270 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:05:31,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 992 conditions, 942 events. 62/942 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 5849 event pairs, 0 based on Foata normal form. 0/833 useless extension candidates. Maximal degree in co-relation 555. Up to 32 conditions per place. [2023-08-04 06:05:31,271 INFO L82 GeneralOperation]: Start removeDead. Operand has 164 places, 161 transitions, 342 flow [2023-08-04 06:05:31,272 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 136 places, 130 transitions, 280 flow [2023-08-04 06:05:31,272 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 06:05:31,272 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 136 places, 130 transitions, 280 flow [2023-08-04 06:05:31,273 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 136 places, 130 transitions, 280 flow [2023-08-04 06:05:31,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 130 transitions, 280 flow [2023-08-04 06:05:31,294 INFO L124 PetriNetUnfolderBase]: 14/446 cut-off events. [2023-08-04 06:05:31,295 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:05:31,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 496 conditions, 446 events. 14/446 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2040 event pairs, 0 based on Foata normal form. 0/417 useless extension candidates. Maximal degree in co-relation 307. Up to 16 conditions per place. [2023-08-04 06:05:31,298 INFO L119 LiptonReduction]: Number of co-enabled transitions 2688 [2023-08-04 06:05:34,196 INFO L134 LiptonReduction]: Checked pairs total: 6610 [2023-08-04 06:05:34,196 INFO L136 LiptonReduction]: Total number of compositions: 101 [2023-08-04 06:05:34,197 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 06:05:34,198 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;@4a98b6ea, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 06:05:34,198 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 06:05:34,201 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 06:05:34,201 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2023-08-04 06:05:34,201 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:05:34,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:05:34,201 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 06:05:34,202 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 06:05:34,202 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:05:34,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1544292526, now seen corresponding path program 1 times [2023-08-04 06:05:34,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:05:34,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144836062] [2023-08-04 06:05:34,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:05:34,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:05:34,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 06:05:34,220 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 06:05:34,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 06:05:34,236 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 06:05:34,236 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 06:05:34,236 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-04 06:05:34,236 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-04 06:05:34,237 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-04 06:05:34,237 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-04 06:05:34,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-04 06:05:34,237 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 06:05:34,238 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN (2/2) [2023-08-04 06:05:34,238 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 06:05:34,238 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 06:05:34,256 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 06:05:34,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 207 places, 196 transitions, 440 flow [2023-08-04 06:05:34,691 INFO L124 PetriNetUnfolderBase]: 282/4380 cut-off events. [2023-08-04 06:05:34,691 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-04 06:05:34,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4669 conditions, 4380 events. 282/4380 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 42758 event pairs, 0 based on Foata normal form. 0/3895 useless extension candidates. Maximal degree in co-relation 3148. Up to 162 conditions per place. [2023-08-04 06:05:34,722 INFO L82 GeneralOperation]: Start removeDead. Operand has 207 places, 196 transitions, 440 flow [2023-08-04 06:05:34,729 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 207 places, 196 transitions, 440 flow [2023-08-04 06:05:34,729 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 06:05:34,730 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 207 places, 196 transitions, 440 flow [2023-08-04 06:05:34,730 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 207 places, 196 transitions, 440 flow [2023-08-04 06:05:34,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 207 places, 196 transitions, 440 flow [2023-08-04 06:05:35,132 INFO L124 PetriNetUnfolderBase]: 282/4380 cut-off events. [2023-08-04 06:05:35,132 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-04 06:05:35,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4669 conditions, 4380 events. 282/4380 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 42758 event pairs, 0 based on Foata normal form. 0/3895 useless extension candidates. Maximal degree in co-relation 3148. Up to 162 conditions per place. [2023-08-04 06:05:35,231 INFO L119 LiptonReduction]: Number of co-enabled transitions 11384 [2023-08-04 06:05:38,762 INFO L134 LiptonReduction]: Checked pairs total: 34735 [2023-08-04 06:05:38,763 INFO L136 LiptonReduction]: Total number of compositions: 141 [2023-08-04 06:05:38,764 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 06:05:38,764 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;@4a98b6ea, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 06:05:38,764 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 06:05:38,766 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 06:05:38,766 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2023-08-04 06:05:38,766 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:05:38,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:05:38,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-04 06:05:38,766 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 06:05:38,766 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:05:38,766 INFO L85 PathProgramCache]: Analyzing trace with hash 35358681, now seen corresponding path program 1 times [2023-08-04 06:05:38,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:05:38,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496467542] [2023-08-04 06:05:38,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:05:38,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:05:38,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:05:38,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 06:05:38,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:05:38,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496467542] [2023-08-04 06:05:38,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496467542] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:05:38,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 06:05:38,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-04 06:05:38,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916054313] [2023-08-04 06:05:38,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:05:38,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:05:38,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:05:38,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:05:38,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 06:05:38,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 337 [2023-08-04 06:05:38,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 71 transitions, 190 flow. Second operand has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:05:38,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:05:38,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 337 [2023-08-04 06:05:38,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand