/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_mix057_power.oepc_pso.oepc_rmo.oepc_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 06:19:46,307 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 06:19:46,390 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 06:19:46,398 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 06:19:46,399 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 06:19:46,400 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 06:19:46,400 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 06:19:46,430 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 06:19:46,430 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 06:19:46,434 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 06:19:46,435 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 06:19:46,435 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 06:19:46,436 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 06:19:46,441 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 06:19:46,441 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 06:19:46,441 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 06:19:46,442 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 06:19:46,442 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 06:19:46,442 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 06:19:46,442 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 06:19:46,442 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 06:19:46,443 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 06:19:46,443 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 06:19:46,443 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 06:19:46,443 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 06:19:46,443 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 06:19:46,444 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 06:19:46,444 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 06:19:46,445 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 06:19:46,445 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 06:19:46,446 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 06:19:46,446 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 06:19:46,446 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 06:19:46,446 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 06:19:46,446 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 06:19:46,446 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 06:19:46,447 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 06:19:46,447 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 06:19:46,447 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 06:19:46,447 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 06:19:46,447 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 06:19:46,447 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 06:19:46,681 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 06:19:46,706 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 06:19:46,709 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 06:19:46,710 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 06:19:46,710 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 06:19:46,711 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix057_power.oepc_pso.oepc_rmo.oepc_bound2.i [2023-08-04 06:19:47,910 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 06:19:48,166 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 06:19:48,167 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix057_power.oepc_pso.oepc_rmo.oepc_bound2.i [2023-08-04 06:19:48,183 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0aa04069/9744abb800494f85b46f2a3e831bd408/FLAG6f2b3f3d6 [2023-08-04 06:19:48,196 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0aa04069/9744abb800494f85b46f2a3e831bd408 [2023-08-04 06:19:48,198 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 06:19:48,199 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 06:19:48,200 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 06:19:48,200 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 06:19:48,203 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 06:19:48,204 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 06:19:48" (1/1) ... [2023-08-04 06:19:48,205 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20b361b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:19:48, skipping insertion in model container [2023-08-04 06:19:48,205 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 06:19:48" (1/1) ... [2023-08-04 06:19:48,250 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 06:19:48,435 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_mix057_power.oepc_pso.oepc_rmo.oepc_bound2.i[969,982] [2023-08-04 06:19:48,650 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 06:19:48,662 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 06:19:48,675 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_mix057_power.oepc_pso.oepc_rmo.oepc_bound2.i[969,982] [2023-08-04 06:19:48,693 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 06:19:48,695 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 06:19:48,759 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 06:19:48,799 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 06:19:48,799 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 06:19:48,805 INFO L206 MainTranslator]: Completed translation [2023-08-04 06:19:48,806 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:19:48 WrapperNode [2023-08-04 06:19:48,806 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 06:19:48,807 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 06:19:48,807 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 06:19:48,807 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 06:19:48,813 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:19:48" (1/1) ... [2023-08-04 06:19:48,855 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:19:48" (1/1) ... [2023-08-04 06:19:48,889 INFO L138 Inliner]: procedures = 177, calls = 67, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 174 [2023-08-04 06:19:48,890 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 06:19:48,891 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 06:19:48,891 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 06:19:48,891 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 06:19:48,901 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:19:48" (1/1) ... [2023-08-04 06:19:48,902 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:19:48" (1/1) ... [2023-08-04 06:19:48,905 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:19:48" (1/1) ... [2023-08-04 06:19:48,905 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:19:48" (1/1) ... [2023-08-04 06:19:48,924 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:19:48" (1/1) ... [2023-08-04 06:19:48,927 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:19:48" (1/1) ... [2023-08-04 06:19:48,934 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:19:48" (1/1) ... [2023-08-04 06:19:48,936 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:19:48" (1/1) ... [2023-08-04 06:19:48,953 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 06:19:48,954 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 06:19:48,954 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 06:19:48,954 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 06:19:48,955 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:19:48" (1/1) ... [2023-08-04 06:19:48,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 06:19:48,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:19:48,987 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 06:19:49,003 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 06:19:49,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 06:19:49,029 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 06:19:49,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 06:19:49,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 06:19:49,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 06:19:49,032 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-04 06:19:49,032 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-04 06:19:49,032 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-04 06:19:49,033 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-04 06:19:49,033 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-04 06:19:49,033 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-04 06:19:49,033 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-04 06:19:49,033 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-04 06:19:49,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 06:19:49,033 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 06:19:49,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 06:19:49,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 06:19:49,036 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 06:19:49,214 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 06:19:49,216 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 06:19:49,629 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 06:19:49,743 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 06:19:49,743 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-04 06:19:49,745 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 06:19:49 BoogieIcfgContainer [2023-08-04 06:19:49,745 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 06:19:49,747 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 06:19:49,747 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 06:19:49,750 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 06:19:49,751 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 06:19:48" (1/3) ... [2023-08-04 06:19:49,751 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39bc8d70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 06:19:49, skipping insertion in model container [2023-08-04 06:19:49,751 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:19:48" (2/3) ... [2023-08-04 06:19:49,752 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39bc8d70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 06:19:49, skipping insertion in model container [2023-08-04 06:19:49,752 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 06:19:49" (3/3) ... [2023-08-04 06:19:49,753 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_mix057_power.oepc_pso.oepc_rmo.oepc_bound2.i [2023-08-04 06:19:49,760 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 06:19:49,767 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 06:19:49,767 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-04 06:19:49,767 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 06:19:49,829 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 06:19:49,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 155 transitions, 330 flow [2023-08-04 06:19:50,108 INFO L124 PetriNetUnfolderBase]: 62/922 cut-off events. [2023-08-04 06:19:50,108 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:19:50,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 972 conditions, 922 events. 62/922 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5649 event pairs, 0 based on Foata normal form. 0/813 useless extension candidates. Maximal degree in co-relation 551. Up to 32 conditions per place. [2023-08-04 06:19:50,119 INFO L82 GeneralOperation]: Start removeDead. Operand has 158 places, 155 transitions, 330 flow [2023-08-04 06:19:50,128 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 158 places, 155 transitions, 330 flow [2023-08-04 06:19:50,132 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 06:19:50,147 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 158 places, 155 transitions, 330 flow [2023-08-04 06:19:50,151 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 158 places, 155 transitions, 330 flow [2023-08-04 06:19:50,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 155 transitions, 330 flow [2023-08-04 06:19:50,268 INFO L124 PetriNetUnfolderBase]: 62/922 cut-off events. [2023-08-04 06:19:50,268 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:19:50,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 972 conditions, 922 events. 62/922 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5649 event pairs, 0 based on Foata normal form. 0/813 useless extension candidates. Maximal degree in co-relation 551. Up to 32 conditions per place. [2023-08-04 06:19:50,291 INFO L119 LiptonReduction]: Number of co-enabled transitions 4358 [2023-08-04 06:19:54,078 INFO L134 LiptonReduction]: Checked pairs total: 10599 [2023-08-04 06:19:54,078 INFO L136 LiptonReduction]: Total number of compositions: 130 [2023-08-04 06:19:54,091 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 06:19:54,097 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;@1d6d02e1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 06:19:54,097 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 06:19:54,100 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 06:19:54,100 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2023-08-04 06:19:54,101 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:19:54,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:19:54,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-04 06:19:54,102 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:19:54,106 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:19:54,106 INFO L85 PathProgramCache]: Analyzing trace with hash 20277678, now seen corresponding path program 1 times [2023-08-04 06:19:54,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:19:54,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666350594] [2023-08-04 06:19:54,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:19:54,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:19:54,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:19:54,483 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 06:19:54,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:19:54,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666350594] [2023-08-04 06:19:54,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666350594] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:19:54,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 06:19:54,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-04 06:19:54,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733619091] [2023-08-04 06:19:54,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:19:54,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:19:54,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:19:54,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:19:54,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 06:19:54,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 285 [2023-08-04 06:19:54,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 42 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:19:54,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:19:54,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 285 [2023-08-04 06:19:54,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:19:56,702 INFO L124 PetriNetUnfolderBase]: 12873/19679 cut-off events. [2023-08-04 06:19:56,702 INFO L125 PetriNetUnfolderBase]: For 133/133 co-relation queries the response was YES. [2023-08-04 06:19:56,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38504 conditions, 19679 events. 12873/19679 cut-off events. For 133/133 co-relation queries the response was YES. Maximal size of possible extension queue 742. Compared 136317 event pairs, 3816 based on Foata normal form. 0/18002 useless extension candidates. Maximal degree in co-relation 32288. Up to 12394 conditions per place. [2023-08-04 06:19:56,826 INFO L140 encePairwiseOnDemand]: 281/285 looper letters, 56 selfloop transitions, 2 changer transitions 7/68 dead transitions. [2023-08-04 06:19:56,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 68 transitions, 287 flow [2023-08-04 06:19:56,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:19:56,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:19:56,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 469 transitions. [2023-08-04 06:19:56,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5485380116959064 [2023-08-04 06:19:56,839 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 469 transitions. [2023-08-04 06:19:56,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 469 transitions. [2023-08-04 06:19:56,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:19:56,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 469 transitions. [2023-08-04 06:19:56,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 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 06:19:56,851 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 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 06:19:56,852 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 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 06:19:56,854 INFO L175 Difference]: Start difference. First operand has 50 places, 42 transitions, 104 flow. Second operand 3 states and 469 transitions. [2023-08-04 06:19:56,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 68 transitions, 287 flow [2023-08-04 06:19:56,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 68 transitions, 287 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 06:19:56,858 INFO L231 Difference]: Finished difference. Result has 51 places, 35 transitions, 86 flow [2023-08-04 06:19:56,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=51, PETRI_TRANSITIONS=35} [2023-08-04 06:19:56,862 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 1 predicate places. [2023-08-04 06:19:56,863 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 35 transitions, 86 flow [2023-08-04 06:19:56,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:19:56,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:19:56,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:19:56,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 06:19:56,864 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:19:56,864 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:19:56,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1228079392, now seen corresponding path program 1 times [2023-08-04 06:19:56,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:19:56,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626491306] [2023-08-04 06:19:56,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:19:56,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:19:56,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:19:56,906 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 06:19:56,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:19:56,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626491306] [2023-08-04 06:19:56,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626491306] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:19:56,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 06:19:56,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 06:19:56,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123689740] [2023-08-04 06:19:56,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:19:56,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:19:56,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:19:56,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:19:56,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 06:19:56,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 285 [2023-08-04 06:19:56,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 35 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 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 06:19:56,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:19:56,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 285 [2023-08-04 06:19:56,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:19:58,449 INFO L124 PetriNetUnfolderBase]: 9395/13366 cut-off events. [2023-08-04 06:19:58,449 INFO L125 PetriNetUnfolderBase]: For 1043/1043 co-relation queries the response was YES. [2023-08-04 06:19:58,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27831 conditions, 13366 events. 9395/13366 cut-off events. For 1043/1043 co-relation queries the response was YES. Maximal size of possible extension queue 498. Compared 75843 event pairs, 8432 based on Foata normal form. 0/12598 useless extension candidates. Maximal degree in co-relation 27815. Up to 13240 conditions per place. [2023-08-04 06:19:58,520 INFO L140 encePairwiseOnDemand]: 282/285 looper letters, 33 selfloop transitions, 2 changer transitions 1/39 dead transitions. [2023-08-04 06:19:58,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 39 transitions, 168 flow [2023-08-04 06:19:58,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:19:58,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:19:58,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 433 transitions. [2023-08-04 06:19:58,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5064327485380117 [2023-08-04 06:19:58,523 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 433 transitions. [2023-08-04 06:19:58,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 433 transitions. [2023-08-04 06:19:58,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:19:58,524 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 433 transitions. [2023-08-04 06:19:58,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 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 06:19:58,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 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 06:19:58,529 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 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 06:19:58,532 INFO L175 Difference]: Start difference. First operand has 51 places, 35 transitions, 86 flow. Second operand 3 states and 433 transitions. [2023-08-04 06:19:58,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 39 transitions, 168 flow [2023-08-04 06:19:58,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 39 transitions, 162 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 06:19:58,534 INFO L231 Difference]: Finished difference. Result has 47 places, 35 transitions, 90 flow [2023-08-04 06:19:58,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=47, PETRI_TRANSITIONS=35} [2023-08-04 06:19:58,535 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -3 predicate places. [2023-08-04 06:19:58,535 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 35 transitions, 90 flow [2023-08-04 06:19:58,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 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 06:19:58,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:19:58,536 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:19:58,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-04 06:19:58,537 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:19:58,537 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:19:58,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1410320901, now seen corresponding path program 1 times [2023-08-04 06:19:58,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:19:58,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137872852] [2023-08-04 06:19:58,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:19:58,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:19:58,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:19:58,634 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 06:19:58,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:19:58,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137872852] [2023-08-04 06:19:58,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137872852] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:19:58,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428799343] [2023-08-04 06:19:58,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:19:58,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:19:58,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:19:58,645 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 06:19:58,646 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 06:19:58,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:19:58,733 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 06:19:58,737 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:19:58,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 06:19:58,750 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 06:19:58,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428799343] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:19:58,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 06:19:58,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 06:19:58,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202932242] [2023-08-04 06:19:58,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:19:58,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:19:58,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:19:58,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:19:58,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:19:58,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 285 [2023-08-04 06:19:58,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 35 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 135.33333333333334) internal successors, (406), 3 states have internal predecessors, (406), 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 06:19:58,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:19:58,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 285 [2023-08-04 06:19:58,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:19:59,782 INFO L124 PetriNetUnfolderBase]: 7984/11179 cut-off events. [2023-08-04 06:19:59,783 INFO L125 PetriNetUnfolderBase]: For 64/64 co-relation queries the response was YES. [2023-08-04 06:19:59,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22480 conditions, 11179 events. 7984/11179 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 60634 event pairs, 7194 based on Foata normal form. 0/10570 useless extension candidates. Maximal degree in co-relation 22463. Up to 11037 conditions per place. [2023-08-04 06:19:59,838 INFO L140 encePairwiseOnDemand]: 282/285 looper letters, 36 selfloop transitions, 2 changer transitions 1/42 dead transitions. [2023-08-04 06:19:59,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 42 transitions, 182 flow [2023-08-04 06:19:59,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:19:59,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:19:59,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 436 transitions. [2023-08-04 06:19:59,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5099415204678363 [2023-08-04 06:19:59,841 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 436 transitions. [2023-08-04 06:19:59,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 436 transitions. [2023-08-04 06:19:59,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:19:59,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 436 transitions. [2023-08-04 06:19:59,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 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 06:19:59,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 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 06:19:59,847 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 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 06:19:59,848 INFO L175 Difference]: Start difference. First operand has 47 places, 35 transitions, 90 flow. Second operand 3 states and 436 transitions. [2023-08-04 06:19:59,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 42 transitions, 182 flow [2023-08-04 06:19:59,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 42 transitions, 178 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 06:19:59,850 INFO L231 Difference]: Finished difference. Result has 48 places, 35 transitions, 94 flow [2023-08-04 06:19:59,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=48, PETRI_TRANSITIONS=35} [2023-08-04 06:19:59,851 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -2 predicate places. [2023-08-04 06:19:59,852 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 35 transitions, 94 flow [2023-08-04 06:19:59,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.33333333333334) internal successors, (406), 3 states have internal predecessors, (406), 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 06:19:59,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:19:59,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:19:59,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-04 06:20:00,058 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 06:20:00,059 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:20:00,059 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:20:00,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1945293460, now seen corresponding path program 1 times [2023-08-04 06:20:00,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:20:00,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424743550] [2023-08-04 06:20:00,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:20:00,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:20:00,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:20:00,116 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 06:20:00,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:20:00,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424743550] [2023-08-04 06:20:00,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424743550] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:20:00,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410246055] [2023-08-04 06:20:00,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:20:00,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:20:00,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:20:00,119 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 06:20:00,140 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 06:20:00,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:20:00,208 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 06:20:00,209 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:20:00,216 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 06:20:00,216 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 06:20:00,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410246055] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:20:00,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 06:20:00,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 06:20:00,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400571764] [2023-08-04 06:20:00,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:20:00,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:20:00,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:20:00,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:20:00,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:20:00,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 285 [2023-08-04 06:20:00,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 35 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:20:00,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:20:00,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 285 [2023-08-04 06:20:00,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:20:00,958 INFO L124 PetriNetUnfolderBase]: 6824/9379 cut-off events. [2023-08-04 06:20:00,958 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-04 06:20:00,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18976 conditions, 9379 events. 6824/9379 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 49017 event pairs, 4904 based on Foata normal form. 0/8926 useless extension candidates. Maximal degree in co-relation 18959. Up to 9119 conditions per place. [2023-08-04 06:20:01,008 INFO L140 encePairwiseOnDemand]: 282/285 looper letters, 39 selfloop transitions, 2 changer transitions 1/45 dead transitions. [2023-08-04 06:20:01,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 45 transitions, 198 flow [2023-08-04 06:20:01,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:20:01,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:20:01,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 439 transitions. [2023-08-04 06:20:01,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5134502923976608 [2023-08-04 06:20:01,010 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 439 transitions. [2023-08-04 06:20:01,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 439 transitions. [2023-08-04 06:20:01,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:20:01,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 439 transitions. [2023-08-04 06:20:01,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 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 06:20:01,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 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 06:20:01,014 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 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 06:20:01,014 INFO L175 Difference]: Start difference. First operand has 48 places, 35 transitions, 94 flow. Second operand 3 states and 439 transitions. [2023-08-04 06:20:01,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 45 transitions, 198 flow [2023-08-04 06:20:01,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 45 transitions, 194 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 06:20:01,016 INFO L231 Difference]: Finished difference. Result has 49 places, 35 transitions, 98 flow [2023-08-04 06:20:01,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=49, PETRI_TRANSITIONS=35} [2023-08-04 06:20:01,017 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -1 predicate places. [2023-08-04 06:20:01,017 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 35 transitions, 98 flow [2023-08-04 06:20:01,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:20:01,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:20:01,017 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:20:01,026 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 06:20:01,222 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 06:20:01,223 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:20:01,223 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:20:01,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1990710098, now seen corresponding path program 1 times [2023-08-04 06:20:01,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:20:01,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790047465] [2023-08-04 06:20:01,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:20:01,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:20:01,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:20:01,292 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 06:20:01,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:20:01,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790047465] [2023-08-04 06:20:01,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790047465] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:20:01,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564935620] [2023-08-04 06:20:01,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:20:01,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:20:01,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:20:01,295 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 06:20:01,318 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 06:20:01,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:20:01,398 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 06:20:01,399 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:20:01,409 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 06:20:01,409 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 06:20:01,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564935620] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:20:01,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 06:20:01,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 06:20:01,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176083556] [2023-08-04 06:20:01,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:20:01,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:20:01,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:20:01,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:20:01,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:20:01,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 285 [2023-08-04 06:20:01,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 35 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 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 06:20:01,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:20:01,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 285 [2023-08-04 06:20:01,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:20:02,099 INFO L124 PetriNetUnfolderBase]: 6392/8795 cut-off events. [2023-08-04 06:20:02,099 INFO L125 PetriNetUnfolderBase]: For 184/184 co-relation queries the response was YES. [2023-08-04 06:20:02,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17957 conditions, 8795 events. 6392/8795 cut-off events. For 184/184 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 44698 event pairs, 4104 based on Foata normal form. 0/8470 useless extension candidates. Maximal degree in co-relation 17939. Up to 7279 conditions per place. [2023-08-04 06:20:02,153 INFO L140 encePairwiseOnDemand]: 282/285 looper letters, 43 selfloop transitions, 2 changer transitions 1/49 dead transitions. [2023-08-04 06:20:02,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 49 transitions, 218 flow [2023-08-04 06:20:02,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:20:02,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:20:02,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 443 transitions. [2023-08-04 06:20:02,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5181286549707602 [2023-08-04 06:20:02,155 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 443 transitions. [2023-08-04 06:20:02,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 443 transitions. [2023-08-04 06:20:02,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:20:02,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 443 transitions. [2023-08-04 06:20:02,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 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 06:20:02,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 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 06:20:02,159 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 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 06:20:02,159 INFO L175 Difference]: Start difference. First operand has 49 places, 35 transitions, 98 flow. Second operand 3 states and 443 transitions. [2023-08-04 06:20:02,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 49 transitions, 218 flow [2023-08-04 06:20:02,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 49 transitions, 214 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 06:20:02,161 INFO L231 Difference]: Finished difference. Result has 50 places, 35 transitions, 102 flow [2023-08-04 06:20:02,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=50, PETRI_TRANSITIONS=35} [2023-08-04 06:20:02,162 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 0 predicate places. [2023-08-04 06:20:02,162 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 35 transitions, 102 flow [2023-08-04 06:20:02,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 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 06:20:02,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:20:02,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:20:02,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-04 06:20:02,367 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 06:20:02,368 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:20:02,368 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:20:02,369 INFO L85 PathProgramCache]: Analyzing trace with hash -845554028, now seen corresponding path program 1 times [2023-08-04 06:20:02,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:20:02,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35506868] [2023-08-04 06:20:02,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:20:02,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:20:02,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:20:02,442 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 06:20:02,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:20:02,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35506868] [2023-08-04 06:20:02,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35506868] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:20:02,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595515006] [2023-08-04 06:20:02,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:20:02,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:20:02,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:20:02,444 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 06:20:02,447 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 06:20:02,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:20:02,548 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 06:20:02,549 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:20:02,584 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 06:20:02,584 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 06:20:02,606 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 06:20:02,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [595515006] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 06:20:02,607 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 06:20:02,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2023-08-04 06:20:02,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058271103] [2023-08-04 06:20:02,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 06:20:02,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-04 06:20:02,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:20:02,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-04 06:20:02,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-04 06:20:02,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 285 [2023-08-04 06:20:02,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 35 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 135.75) internal successors, (543), 4 states have internal predecessors, (543), 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 06:20:02,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:20:02,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 285 [2023-08-04 06:20:02,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:20:02,639 INFO L124 PetriNetUnfolderBase]: 6/21 cut-off events. [2023-08-04 06:20:02,639 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-04 06:20:02,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 21 events. 6/21 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 26 event pairs, 2 based on Foata normal form. 4/25 useless extension candidates. Maximal degree in co-relation 47. Up to 14 conditions per place. [2023-08-04 06:20:02,639 INFO L140 encePairwiseOnDemand]: 282/285 looper letters, 0 selfloop transitions, 0 changer transitions 12/12 dead transitions. [2023-08-04 06:20:02,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 12 transitions, 51 flow [2023-08-04 06:20:02,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 06:20:02,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 06:20:02,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 536 transitions. [2023-08-04 06:20:02,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47017543859649125 [2023-08-04 06:20:02,641 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 536 transitions. [2023-08-04 06:20:02,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 536 transitions. [2023-08-04 06:20:02,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:20:02,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 536 transitions. [2023-08-04 06:20:02,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 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 06:20:02,645 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 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 06:20:02,646 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 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 06:20:02,646 INFO L175 Difference]: Start difference. First operand has 50 places, 35 transitions, 102 flow. Second operand 4 states and 536 transitions. [2023-08-04 06:20:02,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 12 transitions, 51 flow [2023-08-04 06:20:02,646 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 06:20:02,647 INFO L231 Difference]: Finished difference. Result has 21 places, 0 transitions, 0 flow [2023-08-04 06:20:02,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, 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 06:20:02,647 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -29 predicate places. [2023-08-04 06:20:02,648 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 0 transitions, 0 flow [2023-08-04 06:20:02,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 135.75) internal successors, (543), 4 states have internal predecessors, (543), 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 06:20:02,650 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-04 06:20:02,651 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-04 06:20:02,651 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-08-04 06:20:02,659 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 06:20:02,857 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 06:20:02,857 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-08-04 06:20:02,859 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE (1/2) [2023-08-04 06:20:02,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 155 transitions, 330 flow [2023-08-04 06:20:02,930 INFO L124 PetriNetUnfolderBase]: 62/922 cut-off events. [2023-08-04 06:20:02,931 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:20:02,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 972 conditions, 922 events. 62/922 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5649 event pairs, 0 based on Foata normal form. 0/813 useless extension candidates. Maximal degree in co-relation 551. Up to 32 conditions per place. [2023-08-04 06:20:02,933 INFO L82 GeneralOperation]: Start removeDead. Operand has 158 places, 155 transitions, 330 flow [2023-08-04 06:20:02,934 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 130 places, 124 transitions, 268 flow [2023-08-04 06:20:02,934 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 06:20:02,934 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 130 places, 124 transitions, 268 flow [2023-08-04 06:20:02,935 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 130 places, 124 transitions, 268 flow [2023-08-04 06:20:02,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 130 places, 124 transitions, 268 flow [2023-08-04 06:20:02,965 INFO L124 PetriNetUnfolderBase]: 14/426 cut-off events. [2023-08-04 06:20:02,965 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:20:02,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 476 conditions, 426 events. 14/426 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1944 event pairs, 0 based on Foata normal form. 0/397 useless extension candidates. Maximal degree in co-relation 303. Up to 16 conditions per place. [2023-08-04 06:20:02,970 INFO L119 LiptonReduction]: Number of co-enabled transitions 2560 [2023-08-04 06:20:05,870 INFO L134 LiptonReduction]: Checked pairs total: 7241 [2023-08-04 06:20:05,871 INFO L136 LiptonReduction]: Total number of compositions: 95 [2023-08-04 06:20:05,872 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 06:20:05,873 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;@1d6d02e1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 06:20:05,873 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 06:20:05,876 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 06:20:05,876 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2023-08-04 06:20:05,876 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:20:05,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:20:05,877 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 06:20:05,877 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 06:20:05,877 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:20:05,877 INFO L85 PathProgramCache]: Analyzing trace with hash 858489335, now seen corresponding path program 1 times [2023-08-04 06:20:05,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:20:05,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027706679] [2023-08-04 06:20:05,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:20:05,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:20:05,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 06:20:05,898 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 06:20:05,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 06:20:05,920 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 06:20:05,921 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 06:20:05,921 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-04 06:20:05,921 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-04 06:20:05,921 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-04 06:20:05,922 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-04 06:20:05,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-04 06:20:05,922 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 06:20:05,923 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN (2/2) [2023-08-04 06:20:05,924 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 06:20:05,924 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 06:20:05,968 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 06:20:05,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 199 places, 188 transitions, 424 flow [2023-08-04 06:20:06,443 INFO L124 PetriNetUnfolderBase]: 282/4268 cut-off events. [2023-08-04 06:20:06,443 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-04 06:20:06,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4557 conditions, 4268 events. 282/4268 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 41174 event pairs, 0 based on Foata normal form. 0/3783 useless extension candidates. Maximal degree in co-relation 3090. Up to 162 conditions per place. [2023-08-04 06:20:06,464 INFO L82 GeneralOperation]: Start removeDead. Operand has 199 places, 188 transitions, 424 flow [2023-08-04 06:20:06,475 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 199 places, 188 transitions, 424 flow [2023-08-04 06:20:06,475 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 06:20:06,475 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 199 places, 188 transitions, 424 flow [2023-08-04 06:20:06,476 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 199 places, 188 transitions, 424 flow [2023-08-04 06:20:06,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 199 places, 188 transitions, 424 flow [2023-08-04 06:20:06,970 INFO L124 PetriNetUnfolderBase]: 282/4268 cut-off events. [2023-08-04 06:20:06,970 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-04 06:20:06,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4557 conditions, 4268 events. 282/4268 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 41174 event pairs, 0 based on Foata normal form. 0/3783 useless extension candidates. Maximal degree in co-relation 3090. Up to 162 conditions per place. [2023-08-04 06:20:07,079 INFO L119 LiptonReduction]: Number of co-enabled transitions 10636 [2023-08-04 06:20:10,585 INFO L134 LiptonReduction]: Checked pairs total: 33460 [2023-08-04 06:20:10,585 INFO L136 LiptonReduction]: Total number of compositions: 137 [2023-08-04 06:20:10,587 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 06:20:10,587 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;@1d6d02e1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 06:20:10,587 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 06:20:10,589 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 06:20:10,589 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2023-08-04 06:20:10,589 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:20:10,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:20:10,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-04 06:20:10,590 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 06:20:10,590 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:20:10,590 INFO L85 PathProgramCache]: Analyzing trace with hash 34224451, now seen corresponding path program 1 times [2023-08-04 06:20:10,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:20:10,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755480606] [2023-08-04 06:20:10,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:20:10,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:20:10,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:20:10,702 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 06:20:10,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:20:10,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755480606] [2023-08-04 06:20:10,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755480606] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:20:10,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 06:20:10,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-04 06:20:10,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225893757] [2023-08-04 06:20:10,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:20:10,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:20:10,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:20:10,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:20:10,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 06:20:10,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 325 [2023-08-04 06:20:10,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 67 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 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 06:20:10,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:20:10,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 325 [2023-08-04 06:20:10,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand