/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_mix047_power.oepc_pso.oepc_rmo.oepc_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 06:12:34,166 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 06:12:34,244 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 06:12:34,249 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 06:12:34,250 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 06:12:34,251 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 06:12:34,251 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 06:12:34,277 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 06:12:34,278 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 06:12:34,281 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 06:12:34,282 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 06:12:34,282 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 06:12:34,282 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 06:12:34,284 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 06:12:34,284 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 06:12:34,284 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 06:12:34,284 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 06:12:34,285 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 06:12:34,285 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 06:12:34,285 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 06:12:34,285 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 06:12:34,285 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 06:12:34,286 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 06:12:34,286 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 06:12:34,286 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 06:12:34,287 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 06:12:34,287 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 06:12:34,288 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 06:12:34,288 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 06:12:34,288 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 06:12:34,289 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 06:12:34,289 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 06:12:34,289 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 06:12:34,290 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 06:12:34,290 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 06:12:34,290 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 06:12:34,290 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 06:12:34,290 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 06:12:34,290 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 06:12:34,290 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 06:12:34,291 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 06:12:34,291 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 06:12:35,050 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 06:12:35,073 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 06:12:35,076 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 06:12:35,077 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 06:12:35,077 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 06:12:35,078 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix047_power.oepc_pso.oepc_rmo.oepc_bound2.i [2023-08-04 06:12:36,261 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 06:12:36,530 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 06:12:36,531 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix047_power.oepc_pso.oepc_rmo.oepc_bound2.i [2023-08-04 06:12:36,543 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d60e429e/9eab20c31f3d4253b669c1edf5398fb1/FLAG6d618aa2e [2023-08-04 06:12:36,557 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d60e429e/9eab20c31f3d4253b669c1edf5398fb1 [2023-08-04 06:12:36,559 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 06:12:36,560 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 06:12:36,561 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 06:12:36,561 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 06:12:36,566 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 06:12:36,567 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 06:12:36" (1/1) ... [2023-08-04 06:12:36,568 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b8361e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:12:36, skipping insertion in model container [2023-08-04 06:12:36,568 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 06:12:36" (1/1) ... [2023-08-04 06:12:36,606 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 06:12:36,733 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_mix047_power.oepc_pso.oepc_rmo.oepc_bound2.i[969,982] [2023-08-04 06:12:36,973 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 06:12:36,995 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 06:12:37,008 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_mix047_power.oepc_pso.oepc_rmo.oepc_bound2.i[969,982] [2023-08-04 06:12:37,021 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 06:12:37,023 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 06:12:37,056 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 06:12:37,087 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 06:12:37,087 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 06:12:37,092 INFO L206 MainTranslator]: Completed translation [2023-08-04 06:12:37,092 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:12:37 WrapperNode [2023-08-04 06:12:37,093 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 06:12:37,094 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 06:12:37,094 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 06:12:37,094 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 06:12:37,100 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:12:37" (1/1) ... [2023-08-04 06:12:37,120 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:12:37" (1/1) ... [2023-08-04 06:12:37,143 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 176 [2023-08-04 06:12:37,144 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 06:12:37,144 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 06:12:37,144 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 06:12:37,145 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 06:12:37,152 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:12:37" (1/1) ... [2023-08-04 06:12:37,152 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:12:37" (1/1) ... [2023-08-04 06:12:37,156 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:12:37" (1/1) ... [2023-08-04 06:12:37,156 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:12:37" (1/1) ... [2023-08-04 06:12:37,165 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:12:37" (1/1) ... [2023-08-04 06:12:37,168 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:12:37" (1/1) ... [2023-08-04 06:12:37,171 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:12:37" (1/1) ... [2023-08-04 06:12:37,172 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:12:37" (1/1) ... [2023-08-04 06:12:37,175 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 06:12:37,176 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 06:12:37,176 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 06:12:37,176 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 06:12:37,177 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:12:37" (1/1) ... [2023-08-04 06:12:37,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 06:12:37,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:12:37,213 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 06:12:37,221 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 06:12:37,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 06:12:37,243 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 06:12:37,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 06:12:37,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 06:12:37,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 06:12:37,244 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-04 06:12:37,244 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-04 06:12:37,244 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-04 06:12:37,244 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-04 06:12:37,244 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-04 06:12:37,245 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-04 06:12:37,245 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-04 06:12:37,245 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-04 06:12:37,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 06:12:37,245 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 06:12:37,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 06:12:37,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 06:12:37,247 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 06:12:37,365 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 06:12:37,367 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 06:12:37,696 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 06:12:37,834 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 06:12:37,834 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-04 06:12:37,839 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 06:12:37 BoogieIcfgContainer [2023-08-04 06:12:37,840 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 06:12:37,842 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 06:12:37,842 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 06:12:37,846 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 06:12:37,847 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 06:12:36" (1/3) ... [2023-08-04 06:12:37,847 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b1e58b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 06:12:37, skipping insertion in model container [2023-08-04 06:12:37,847 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:12:37" (2/3) ... [2023-08-04 06:12:37,848 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b1e58b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 06:12:37, skipping insertion in model container [2023-08-04 06:12:37,848 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 06:12:37" (3/3) ... [2023-08-04 06:12:37,849 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_mix047_power.oepc_pso.oepc_rmo.oepc_bound2.i [2023-08-04 06:12:37,857 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 06:12:37,865 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 06:12:37,866 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-04 06:12:37,866 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 06:12:37,932 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 06:12:37,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 159 transitions, 338 flow [2023-08-04 06:12:38,207 INFO L124 PetriNetUnfolderBase]: 62/940 cut-off events. [2023-08-04 06:12:38,207 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:12:38,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 990 conditions, 940 events. 62/940 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 5859 event pairs, 0 based on Foata normal form. 0/831 useless extension candidates. Maximal degree in co-relation 553. Up to 32 conditions per place. [2023-08-04 06:12:38,219 INFO L82 GeneralOperation]: Start removeDead. Operand has 162 places, 159 transitions, 338 flow [2023-08-04 06:12:38,230 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 159 transitions, 338 flow [2023-08-04 06:12:38,234 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 06:12:38,245 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 162 places, 159 transitions, 338 flow [2023-08-04 06:12:38,248 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 162 places, 159 transitions, 338 flow [2023-08-04 06:12:38,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 159 transitions, 338 flow [2023-08-04 06:12:38,349 INFO L124 PetriNetUnfolderBase]: 62/940 cut-off events. [2023-08-04 06:12:38,350 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:12:38,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 990 conditions, 940 events. 62/940 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 5859 event pairs, 0 based on Foata normal form. 0/831 useless extension candidates. Maximal degree in co-relation 553. Up to 32 conditions per place. [2023-08-04 06:12:38,372 INFO L119 LiptonReduction]: Number of co-enabled transitions 4610 [2023-08-04 06:12:42,141 INFO L134 LiptonReduction]: Checked pairs total: 12209 [2023-08-04 06:12:42,141 INFO L136 LiptonReduction]: Total number of compositions: 130 [2023-08-04 06:12:42,152 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 06:12:42,157 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;@3e222ea5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 06:12:42,157 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 06:12:42,160 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 06:12:42,160 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2023-08-04 06:12:42,160 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:12:42,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:12:42,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-04 06:12:42,161 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:12:42,165 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:12:42,166 INFO L85 PathProgramCache]: Analyzing trace with hash 20639464, now seen corresponding path program 1 times [2023-08-04 06:12:42,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:12:42,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876678373] [2023-08-04 06:12:42,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:12:42,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:12:42,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:12:42,534 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 06:12:42,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:12:42,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876678373] [2023-08-04 06:12:42,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876678373] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:12:42,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 06:12:42,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-04 06:12:42,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271587464] [2023-08-04 06:12:42,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:12:42,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:12:42,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:12:42,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:12:42,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 06:12:42,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 289 [2023-08-04 06:12:42,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 45 transitions, 110 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 06:12:42,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:12:42,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 289 [2023-08-04 06:12:42,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:12:45,687 INFO L124 PetriNetUnfolderBase]: 19598/29506 cut-off events. [2023-08-04 06:12:45,688 INFO L125 PetriNetUnfolderBase]: For 121/121 co-relation queries the response was YES. [2023-08-04 06:12:45,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57665 conditions, 29506 events. 19598/29506 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 1032. Compared 210149 event pairs, 5876 based on Foata normal form. 875/27585 useless extension candidates. Maximal degree in co-relation 48371. Up to 18634 conditions per place. [2023-08-04 06:12:45,862 INFO L140 encePairwiseOnDemand]: 285/289 looper letters, 60 selfloop transitions, 2 changer transitions 9/74 dead transitions. [2023-08-04 06:12:45,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 74 transitions, 311 flow [2023-08-04 06:12:45,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:12:45,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:12:45,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 487 transitions. [2023-08-04 06:12:45,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5617070357554786 [2023-08-04 06:12:45,882 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 487 transitions. [2023-08-04 06:12:45,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 487 transitions. [2023-08-04 06:12:45,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:12:45,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 487 transitions. [2023-08-04 06:12:45,894 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 06:12:45,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 289.0) internal successors, (1156), 4 states have internal predecessors, (1156), 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 06:12:45,901 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 289.0) internal successors, (1156), 4 states have internal predecessors, (1156), 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 06:12:45,903 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 110 flow. Second operand 3 states and 487 transitions. [2023-08-04 06:12:45,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 74 transitions, 311 flow [2023-08-04 06:12:45,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 74 transitions, 311 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 06:12:45,910 INFO L231 Difference]: Finished difference. Result has 54 places, 37 transitions, 90 flow [2023-08-04 06:12:45,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=289, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=54, PETRI_TRANSITIONS=37} [2023-08-04 06:12:45,918 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 1 predicate places. [2023-08-04 06:12:45,919 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 37 transitions, 90 flow [2023-08-04 06:12:45,919 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 06:12:45,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:12:45,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:12:45,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 06:12:45,920 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:12:45,928 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:12:45,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1582116718, now seen corresponding path program 1 times [2023-08-04 06:12:45,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:12:45,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136726929] [2023-08-04 06:12:45,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:12:45,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:12:45,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:12:45,999 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 06:12:46,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:12:46,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136726929] [2023-08-04 06:12:46,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136726929] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:12:46,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 06:12:46,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 06:12:46,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643268415] [2023-08-04 06:12:46,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:12:46,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:12:46,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:12:46,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:12:46,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 06:12:46,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 289 [2023-08-04 06:12:46,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 37 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 138.66666666666666) internal successors, (416), 3 states have internal predecessors, (416), 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 06:12:46,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:12:46,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 289 [2023-08-04 06:12:46,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:12:47,816 INFO L124 PetriNetUnfolderBase]: 12930/18133 cut-off events. [2023-08-04 06:12:47,816 INFO L125 PetriNetUnfolderBase]: For 1342/1342 co-relation queries the response was YES. [2023-08-04 06:12:47,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37758 conditions, 18133 events. 12930/18133 cut-off events. For 1342/1342 co-relation queries the response was YES. Maximal size of possible extension queue 644. Compared 103403 event pairs, 9072 based on Foata normal form. 0/17277 useless extension candidates. Maximal degree in co-relation 37742. Up to 18075 conditions per place. [2023-08-04 06:12:47,911 INFO L140 encePairwiseOnDemand]: 286/289 looper letters, 35 selfloop transitions, 2 changer transitions 1/41 dead transitions. [2023-08-04 06:12:47,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 41 transitions, 176 flow [2023-08-04 06:12:47,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:12:47,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:12:47,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 447 transitions. [2023-08-04 06:12:47,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5155709342560554 [2023-08-04 06:12:47,914 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 447 transitions. [2023-08-04 06:12:47,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 447 transitions. [2023-08-04 06:12:47,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:12:47,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 447 transitions. [2023-08-04 06:12:47,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 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 06:12:47,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 289.0) internal successors, (1156), 4 states have internal predecessors, (1156), 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 06:12:47,918 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 289.0) internal successors, (1156), 4 states have internal predecessors, (1156), 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 06:12:47,918 INFO L175 Difference]: Start difference. First operand has 54 places, 37 transitions, 90 flow. Second operand 3 states and 447 transitions. [2023-08-04 06:12:47,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 41 transitions, 176 flow [2023-08-04 06:12:47,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 41 transitions, 170 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 06:12:47,920 INFO L231 Difference]: Finished difference. Result has 49 places, 37 transitions, 94 flow [2023-08-04 06:12:47,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=289, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=49, PETRI_TRANSITIONS=37} [2023-08-04 06:12:47,921 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -4 predicate places. [2023-08-04 06:12:47,921 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 37 transitions, 94 flow [2023-08-04 06:12:47,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.66666666666666) internal successors, (416), 3 states have internal predecessors, (416), 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 06:12:47,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:12:47,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:12:47,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-04 06:12:47,922 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:12:47,923 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:12:47,923 INFO L85 PathProgramCache]: Analyzing trace with hash -57478236, now seen corresponding path program 1 times [2023-08-04 06:12:47,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:12:47,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536921058] [2023-08-04 06:12:47,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:12:47,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:12:47,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:12:48,097 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 06:12:48,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:12:48,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536921058] [2023-08-04 06:12:48,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536921058] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:12:48,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959948377] [2023-08-04 06:12:48,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:12:48,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:12:48,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:12:48,103 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 06:12:48,104 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 06:12:48,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:12:48,202 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 06:12:48,205 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:12:48,219 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 06:12:48,219 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 06:12:48,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1959948377] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:12:48,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 06:12:48,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 06:12:48,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571146517] [2023-08-04 06:12:48,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:12:48,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:12:48,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:12:48,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:12:48,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:12:48,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 289 [2023-08-04 06:12:48,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 37 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 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 06:12:48,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:12:48,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 289 [2023-08-04 06:12:48,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:12:49,647 INFO L124 PetriNetUnfolderBase]: 10968/15123 cut-off events. [2023-08-04 06:12:49,647 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-08-04 06:12:49,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30448 conditions, 15123 events. 10968/15123 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 82293 event pairs, 7878 based on Foata normal form. 0/14450 useless extension candidates. Maximal degree in co-relation 30431. Up to 15061 conditions per place. [2023-08-04 06:12:49,855 INFO L140 encePairwiseOnDemand]: 286/289 looper letters, 38 selfloop transitions, 2 changer transitions 1/44 dead transitions. [2023-08-04 06:12:49,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 44 transitions, 190 flow [2023-08-04 06:12:49,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:12:49,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:12:49,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 450 transitions. [2023-08-04 06:12:49,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5190311418685121 [2023-08-04 06:12:49,857 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 450 transitions. [2023-08-04 06:12:49,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 450 transitions. [2023-08-04 06:12:49,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:12:49,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 450 transitions. [2023-08-04 06:12:49,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 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 06:12:49,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 289.0) internal successors, (1156), 4 states have internal predecessors, (1156), 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 06:12:49,861 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 289.0) internal successors, (1156), 4 states have internal predecessors, (1156), 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 06:12:49,861 INFO L175 Difference]: Start difference. First operand has 49 places, 37 transitions, 94 flow. Second operand 3 states and 450 transitions. [2023-08-04 06:12:49,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 44 transitions, 190 flow [2023-08-04 06:12:49,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 44 transitions, 186 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 06:12:49,864 INFO L231 Difference]: Finished difference. Result has 50 places, 37 transitions, 98 flow [2023-08-04 06:12:49,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=289, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=50, PETRI_TRANSITIONS=37} [2023-08-04 06:12:49,865 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -3 predicate places. [2023-08-04 06:12:49,865 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 37 transitions, 98 flow [2023-08-04 06:12:49,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 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 06:12:49,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:12:49,866 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:12:49,874 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-04 06:12:50,073 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 06:12:50,074 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:12:50,074 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:12:50,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1622393959, now seen corresponding path program 1 times [2023-08-04 06:12:50,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:12:50,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115674122] [2023-08-04 06:12:50,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:12:50,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:12:50,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:12:50,138 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 06:12:50,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:12:50,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115674122] [2023-08-04 06:12:50,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115674122] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:12:50,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281107062] [2023-08-04 06:12:50,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:12:50,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:12:50,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:12:50,146 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 06:12:50,150 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 06:12:50,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:12:50,265 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 06:12:50,266 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:12:50,278 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 06:12:50,278 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 06:12:50,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281107062] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:12:50,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 06:12:50,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 06:12:50,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819959811] [2023-08-04 06:12:50,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:12:50,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:12:50,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:12:50,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:12:50,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:12:50,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 289 [2023-08-04 06:12:50,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 37 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 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 06:12:50,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:12:50,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 289 [2023-08-04 06:12:50,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:12:51,219 INFO L124 PetriNetUnfolderBase]: 9336/12731 cut-off events. [2023-08-04 06:12:51,220 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2023-08-04 06:12:51,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25672 conditions, 12731 events. 9336/12731 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 65655 event pairs, 8360 based on Foata normal form. 0/12218 useless extension candidates. Maximal degree in co-relation 25655. Up to 12463 conditions per place. [2023-08-04 06:12:51,296 INFO L140 encePairwiseOnDemand]: 286/289 looper letters, 41 selfloop transitions, 2 changer transitions 1/47 dead transitions. [2023-08-04 06:12:51,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 47 transitions, 206 flow [2023-08-04 06:12:51,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:12:51,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:12:51,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 453 transitions. [2023-08-04 06:12:51,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5224913494809689 [2023-08-04 06:12:51,299 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 453 transitions. [2023-08-04 06:12:51,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 453 transitions. [2023-08-04 06:12:51,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:12:51,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 453 transitions. [2023-08-04 06:12:51,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:12:51,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 289.0) internal successors, (1156), 4 states have internal predecessors, (1156), 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 06:12:51,303 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 289.0) internal successors, (1156), 4 states have internal predecessors, (1156), 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 06:12:51,303 INFO L175 Difference]: Start difference. First operand has 50 places, 37 transitions, 98 flow. Second operand 3 states and 453 transitions. [2023-08-04 06:12:51,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 47 transitions, 206 flow [2023-08-04 06:12:51,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 47 transitions, 202 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 06:12:51,305 INFO L231 Difference]: Finished difference. Result has 51 places, 37 transitions, 102 flow [2023-08-04 06:12:51,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=289, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=51, PETRI_TRANSITIONS=37} [2023-08-04 06:12:51,306 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -2 predicate places. [2023-08-04 06:12:51,306 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 37 transitions, 102 flow [2023-08-04 06:12:51,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 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 06:12:51,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:12:51,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:12:51,316 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 06:12:51,512 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 06:12:51,513 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:12:51,513 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:12:51,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1339700740, now seen corresponding path program 1 times [2023-08-04 06:12:51,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:12:51,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940573882] [2023-08-04 06:12:51,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:12:51,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:12:51,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:12:51,615 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 06:12:51,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:12:51,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940573882] [2023-08-04 06:12:51,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940573882] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:12:51,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322888058] [2023-08-04 06:12:51,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:12:51,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:12:51,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:12:51,618 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 06:12:51,625 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 06:12:51,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:12:51,723 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 06:12:51,725 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:12:51,740 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 06:12:51,741 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 06:12:51,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322888058] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:12:51,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 06:12:51,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 06:12:51,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855178692] [2023-08-04 06:12:51,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:12:51,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:12:51,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:12:51,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:12:51,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:12:51,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 289 [2023-08-04 06:12:51,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 37 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 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 06:12:51,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:12:51,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 289 [2023-08-04 06:12:51,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:12:52,736 INFO L124 PetriNetUnfolderBase]: 8760/11931 cut-off events. [2023-08-04 06:12:52,736 INFO L125 PetriNetUnfolderBase]: For 184/184 co-relation queries the response was YES. [2023-08-04 06:12:52,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24229 conditions, 11931 events. 8760/11931 cut-off events. For 184/184 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 62025 event pairs, 5688 based on Foata normal form. 0/11542 useless extension candidates. Maximal degree in co-relation 24211. Up to 10207 conditions per place. [2023-08-04 06:12:52,796 INFO L140 encePairwiseOnDemand]: 286/289 looper letters, 46 selfloop transitions, 2 changer transitions 1/52 dead transitions. [2023-08-04 06:12:52,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 52 transitions, 230 flow [2023-08-04 06:12:52,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:12:52,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:12:52,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 458 transitions. [2023-08-04 06:12:52,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5282583621683967 [2023-08-04 06:12:52,799 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 458 transitions. [2023-08-04 06:12:52,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 458 transitions. [2023-08-04 06:12:52,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:12:52,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 458 transitions. [2023-08-04 06:12:52,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:12:52,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 289.0) internal successors, (1156), 4 states have internal predecessors, (1156), 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 06:12:52,803 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 289.0) internal successors, (1156), 4 states have internal predecessors, (1156), 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 06:12:52,803 INFO L175 Difference]: Start difference. First operand has 51 places, 37 transitions, 102 flow. Second operand 3 states and 458 transitions. [2023-08-04 06:12:52,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 52 transitions, 230 flow [2023-08-04 06:12:52,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 52 transitions, 226 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 06:12:52,805 INFO L231 Difference]: Finished difference. Result has 52 places, 37 transitions, 106 flow [2023-08-04 06:12:52,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=289, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=52, PETRI_TRANSITIONS=37} [2023-08-04 06:12:52,806 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -1 predicate places. [2023-08-04 06:12:52,806 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 37 transitions, 106 flow [2023-08-04 06:12:52,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 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 06:12:52,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:12:52,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:12:52,813 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-04 06:12:53,012 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 06:12:53,013 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:12:53,013 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:12:53,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1119040977, now seen corresponding path program 1 times [2023-08-04 06:12:53,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:12:53,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617731084] [2023-08-04 06:12:53,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:12:53,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:12:53,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:12:53,088 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 06:12:53,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:12:53,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617731084] [2023-08-04 06:12:53,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617731084] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:12:53,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455264827] [2023-08-04 06:12:53,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:12:53,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:12:53,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:12:53,090 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 06:12:53,093 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 06:12:53,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:12:53,194 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 06:12:53,195 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:12:53,228 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 06:12:53,228 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 06:12:53,251 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 06:12:53,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455264827] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 06:12:53,252 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 06:12:53,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 06:12:53,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660629366] [2023-08-04 06:12:53,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 06:12:53,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 06:12:53,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:12:53,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 06:12:53,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:12:53,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 289 [2023-08-04 06:12:53,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 37 transitions, 106 flow. Second operand has 5 states, 5 states have (on average 139.8) internal successors, (699), 5 states have internal predecessors, (699), 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 06:12:53,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:12:53,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 289 [2023-08-04 06:12:53,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:12:53,291 INFO L124 PetriNetUnfolderBase]: 6/21 cut-off events. [2023-08-04 06:12:53,292 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:12:53,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 21 events. 6/21 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 29 event pairs, 0 based on Foata normal form. 4/25 useless extension candidates. Maximal degree in co-relation 47. Up to 14 conditions per place. [2023-08-04 06:12:53,292 INFO L140 encePairwiseOnDemand]: 286/289 looper letters, 0 selfloop transitions, 0 changer transitions 12/12 dead transitions. [2023-08-04 06:12:53,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 12 transitions, 51 flow [2023-08-04 06:12:53,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 06:12:53,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 06:12:53,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 552 transitions. [2023-08-04 06:12:53,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47750865051903113 [2023-08-04 06:12:53,295 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 552 transitions. [2023-08-04 06:12:53,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 552 transitions. [2023-08-04 06:12:53,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:12:53,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 552 transitions. [2023-08-04 06:12:53,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 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 06:12:53,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 289.0) internal successors, (1445), 5 states have internal predecessors, (1445), 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 06:12:53,302 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 289.0) internal successors, (1445), 5 states have internal predecessors, (1445), 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 06:12:53,302 INFO L175 Difference]: Start difference. First operand has 52 places, 37 transitions, 106 flow. Second operand 4 states and 552 transitions. [2023-08-04 06:12:53,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 12 transitions, 51 flow [2023-08-04 06:12:53,302 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 06:12:53,303 INFO L231 Difference]: Finished difference. Result has 21 places, 0 transitions, 0 flow [2023-08-04 06:12:53,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=289, 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 06:12:53,305 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -32 predicate places. [2023-08-04 06:12:53,305 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 0 transitions, 0 flow [2023-08-04 06:12:53,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 139.8) internal successors, (699), 5 states have internal predecessors, (699), 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 06:12:53,308 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-04 06:12:53,309 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-04 06:12:53,309 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-08-04 06:12:53,317 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 06:12:53,515 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 06:12:53,515 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-08-04 06:12:53,517 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE (1/2) [2023-08-04 06:12:53,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 159 transitions, 338 flow [2023-08-04 06:12:53,605 INFO L124 PetriNetUnfolderBase]: 62/940 cut-off events. [2023-08-04 06:12:53,605 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:12:53,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 990 conditions, 940 events. 62/940 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 5859 event pairs, 0 based on Foata normal form. 0/831 useless extension candidates. Maximal degree in co-relation 553. Up to 32 conditions per place. [2023-08-04 06:12:53,608 INFO L82 GeneralOperation]: Start removeDead. Operand has 162 places, 159 transitions, 338 flow [2023-08-04 06:12:53,610 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 134 places, 128 transitions, 276 flow [2023-08-04 06:12:53,610 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 06:12:53,610 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 134 places, 128 transitions, 276 flow [2023-08-04 06:12:53,611 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 134 places, 128 transitions, 276 flow [2023-08-04 06:12:53,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 128 transitions, 276 flow [2023-08-04 06:12:53,647 INFO L124 PetriNetUnfolderBase]: 14/444 cut-off events. [2023-08-04 06:12:53,647 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:12:53,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 494 conditions, 444 events. 14/444 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2069 event pairs, 0 based on Foata normal form. 0/415 useless extension candidates. Maximal degree in co-relation 305. Up to 16 conditions per place. [2023-08-04 06:12:53,653 INFO L119 LiptonReduction]: Number of co-enabled transitions 2688 [2023-08-04 06:12:56,948 INFO L134 LiptonReduction]: Checked pairs total: 6340 [2023-08-04 06:12:56,949 INFO L136 LiptonReduction]: Total number of compositions: 99 [2023-08-04 06:12:56,950 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 06:12:56,951 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;@3e222ea5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 06:12:56,951 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 06:12:56,955 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 06:12:56,955 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2023-08-04 06:12:56,955 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:12:56,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:12:56,956 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 06:12:56,956 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 06:12:56,956 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:12:56,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1286506194, now seen corresponding path program 1 times [2023-08-04 06:12:56,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:12:56,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252839611] [2023-08-04 06:12:56,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:12:56,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:12:56,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 06:12:56,980 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 06:12:56,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 06:12:57,010 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 06:12:57,011 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 06:12:57,011 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-04 06:12:57,011 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-04 06:12:57,012 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-04 06:12:57,012 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-04 06:12:57,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-04 06:12:57,012 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 06:12:57,013 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN (2/2) [2023-08-04 06:12:57,013 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 06:12:57,014 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 06:12:57,054 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 06:12:57,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 194 transitions, 436 flow [2023-08-04 06:12:57,554 INFO L124 PetriNetUnfolderBase]: 282/4378 cut-off events. [2023-08-04 06:12:57,554 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-04 06:12:57,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4667 conditions, 4378 events. 282/4378 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 42817 event pairs, 0 based on Foata normal form. 0/3893 useless extension candidates. Maximal degree in co-relation 3146. Up to 162 conditions per place. [2023-08-04 06:12:57,574 INFO L82 GeneralOperation]: Start removeDead. Operand has 205 places, 194 transitions, 436 flow [2023-08-04 06:12:57,586 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 205 places, 194 transitions, 436 flow [2023-08-04 06:12:57,587 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 06:12:57,587 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 205 places, 194 transitions, 436 flow [2023-08-04 06:12:57,587 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 205 places, 194 transitions, 436 flow [2023-08-04 06:12:57,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 194 transitions, 436 flow [2023-08-04 06:12:58,063 INFO L124 PetriNetUnfolderBase]: 282/4378 cut-off events. [2023-08-04 06:12:58,063 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-04 06:12:58,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4667 conditions, 4378 events. 282/4378 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 42817 event pairs, 0 based on Foata normal form. 0/3893 useless extension candidates. Maximal degree in co-relation 3146. Up to 162 conditions per place. [2023-08-04 06:12:58,174 INFO L119 LiptonReduction]: Number of co-enabled transitions 11384 [2023-08-04 06:13:01,571 INFO L134 LiptonReduction]: Checked pairs total: 36097 [2023-08-04 06:13:01,572 INFO L136 LiptonReduction]: Total number of compositions: 137 [2023-08-04 06:13:01,573 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 06:13:01,574 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;@3e222ea5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 06:13:01,574 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 06:13:01,576 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 06:13:01,576 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2023-08-04 06:13:01,576 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:13:01,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:13:01,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-04 06:13:01,576 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 06:13:01,577 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:13:01,577 INFO L85 PathProgramCache]: Analyzing trace with hash 34948948, now seen corresponding path program 1 times [2023-08-04 06:13:01,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:13:01,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104953469] [2023-08-04 06:13:01,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:13:01,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:13:01,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:13:01,650 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 06:13:01,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:13:01,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104953469] [2023-08-04 06:13:01,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104953469] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:13:01,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 06:13:01,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-04 06:13:01,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636543395] [2023-08-04 06:13:01,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:13:01,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:13:01,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:13:01,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:13:01,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 06:13:01,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 331 [2023-08-04 06:13:01,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 73 transitions, 194 flow. Second operand has 3 states, 3 states have (on average 164.33333333333334) internal successors, (493), 3 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:13:01,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:13:01,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 331 [2023-08-04 06:13:01,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand