/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_mix026.oepc_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 05:52:21,844 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 05:52:21,889 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 05:52:21,892 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 05:52:21,893 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 05:52:21,893 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 05:52:21,893 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 05:52:21,919 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 05:52:21,920 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 05:52:21,920 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 05:52:21,925 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 05:52:21,925 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 05:52:21,926 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 05:52:21,928 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 05:52:21,929 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 05:52:21,929 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 05:52:21,929 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 05:52:21,929 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 05:52:21,929 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 05:52:21,929 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 05:52:21,930 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 05:52:21,931 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 05:52:21,931 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 05:52:21,931 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 05:52:21,931 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 05:52:21,931 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 05:52:21,931 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 05:52:21,932 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 05:52:21,932 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 05:52:21,933 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 05:52:21,933 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 05:52:21,933 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 05:52:21,934 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 05:52:21,934 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 05:52:21,934 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 05:52:21,934 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 05:52:21,934 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 05:52:21,934 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 05:52:21,934 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 05:52:21,934 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 05:52:21,934 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 05:52:21,935 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 05:52:22,125 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 05:52:22,141 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 05:52:22,142 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 05:52:22,143 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 05:52:22,143 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 05:52:22,144 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix026.oepc_bound2.i [2023-08-04 05:52:23,235 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 05:52:23,445 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 05:52:23,446 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix026.oepc_bound2.i [2023-08-04 05:52:23,458 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c64ef1e6/5ddb2c70aefe4351a0b232ec43e5c097/FLAGd5a389c91 [2023-08-04 05:52:23,470 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c64ef1e6/5ddb2c70aefe4351a0b232ec43e5c097 [2023-08-04 05:52:23,472 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 05:52:23,473 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 05:52:23,474 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 05:52:23,474 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 05:52:23,477 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 05:52:23,477 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 05:52:23" (1/1) ... [2023-08-04 05:52:23,478 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52dc1ec2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:52:23, skipping insertion in model container [2023-08-04 05:52:23,478 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 05:52:23" (1/1) ... [2023-08-04 05:52:23,510 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 05:52:23,618 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_mix026.oepc_bound2.i[945,958] [2023-08-04 05:52:23,820 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 05:52:23,834 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 05:52:23,844 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_mix026.oepc_bound2.i[945,958] [2023-08-04 05:52:23,859 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 05:52:23,860 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 05:52:23,910 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 05:52:23,938 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 05:52:23,938 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 05:52:23,943 INFO L206 MainTranslator]: Completed translation [2023-08-04 05:52:23,945 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:52:23 WrapperNode [2023-08-04 05:52:23,945 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 05:52:23,946 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 05:52:23,947 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 05:52:23,947 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 05:52:23,952 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:52:23" (1/1) ... [2023-08-04 05:52:23,969 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:52:23" (1/1) ... [2023-08-04 05:52:23,988 INFO L138 Inliner]: procedures = 177, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 177 [2023-08-04 05:52:23,989 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 05:52:23,989 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 05:52:23,989 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 05:52:23,990 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 05:52:23,996 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:52:23" (1/1) ... [2023-08-04 05:52:23,997 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:52:23" (1/1) ... [2023-08-04 05:52:24,000 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:52:23" (1/1) ... [2023-08-04 05:52:24,000 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:52:23" (1/1) ... [2023-08-04 05:52:24,008 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:52:23" (1/1) ... [2023-08-04 05:52:24,011 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:52:23" (1/1) ... [2023-08-04 05:52:24,013 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:52:23" (1/1) ... [2023-08-04 05:52:24,015 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:52:23" (1/1) ... [2023-08-04 05:52:24,024 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 05:52:24,025 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 05:52:24,025 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 05:52:24,025 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 05:52:24,025 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:52:23" (1/1) ... [2023-08-04 05:52:24,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 05:52:24,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 05:52:24,064 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-04 05:52:24,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-04 05:52:24,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 05:52:24,105 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 05:52:24,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 05:52:24,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 05:52:24,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 05:52:24,107 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-04 05:52:24,107 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-04 05:52:24,107 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-04 05:52:24,107 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-04 05:52:24,107 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-04 05:52:24,107 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-04 05:52:24,108 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-04 05:52:24,108 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-04 05:52:24,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 05:52:24,108 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 05:52:24,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 05:52:24,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 05:52:24,110 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-04 05:52:24,242 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 05:52:24,244 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 05:52:24,532 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 05:52:24,621 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 05:52:24,621 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-04 05:52:24,624 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 05:52:24 BoogieIcfgContainer [2023-08-04 05:52:24,624 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 05:52:24,628 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 05:52:24,628 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 05:52:24,631 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 05:52:24,631 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 05:52:23" (1/3) ... [2023-08-04 05:52:24,632 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@393a9389 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 05:52:24, skipping insertion in model container [2023-08-04 05:52:24,632 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:52:23" (2/3) ... [2023-08-04 05:52:24,633 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@393a9389 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 05:52:24, skipping insertion in model container [2023-08-04 05:52:24,633 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 05:52:24" (3/3) ... [2023-08-04 05:52:24,634 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_mix026.oepc_bound2.i [2023-08-04 05:52:24,640 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 05:52:24,647 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 05:52:24,647 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-04 05:52:24,647 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 05:52:24,704 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 05:52:24,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 159 transitions, 338 flow [2023-08-04 05:52:24,922 INFO L124 PetriNetUnfolderBase]: 62/933 cut-off events. [2023-08-04 05:52:24,923 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:52:24,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 983 conditions, 933 events. 62/933 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5779 event pairs, 0 based on Foata normal form. 0/824 useless extension candidates. Maximal degree in co-relation 554. Up to 32 conditions per place. [2023-08-04 05:52:24,930 INFO L82 GeneralOperation]: Start removeDead. Operand has 162 places, 159 transitions, 338 flow [2023-08-04 05:52:24,937 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 159 transitions, 338 flow [2023-08-04 05:52:24,939 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 05:52:24,955 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 162 places, 159 transitions, 338 flow [2023-08-04 05:52:24,957 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 162 places, 159 transitions, 338 flow [2023-08-04 05:52:24,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 159 transitions, 338 flow [2023-08-04 05:52:25,066 INFO L124 PetriNetUnfolderBase]: 62/933 cut-off events. [2023-08-04 05:52:25,066 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:52:25,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 983 conditions, 933 events. 62/933 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5779 event pairs, 0 based on Foata normal form. 0/824 useless extension candidates. Maximal degree in co-relation 554. Up to 32 conditions per place. [2023-08-04 05:52:25,080 INFO L119 LiptonReduction]: Number of co-enabled transitions 4484 [2023-08-04 05:52:28,595 INFO L134 LiptonReduction]: Checked pairs total: 12142 [2023-08-04 05:52:28,595 INFO L136 LiptonReduction]: Total number of compositions: 133 [2023-08-04 05:52:28,607 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 05:52:28,612 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;@49f20e0e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 05:52:28,612 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 05:52:28,615 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 05:52:28,615 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2023-08-04 05:52:28,615 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:52:28,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:52:28,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-04 05:52:28,616 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 05:52:28,620 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:52:28,620 INFO L85 PathProgramCache]: Analyzing trace with hash 20673067, now seen corresponding path program 1 times [2023-08-04 05:52:28,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:52:28,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942989944] [2023-08-04 05:52:28,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:52:28,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:52:28,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:52:28,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 05:52:28,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:52:28,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942989944] [2023-08-04 05:52:28,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942989944] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:52:28,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 05:52:28,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-04 05:52:28,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582808629] [2023-08-04 05:52:28,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:52:28,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:52:28,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:52:28,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:52:28,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 05:52:28,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 292 [2023-08-04 05:52:28,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 43 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:52:28,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:52:28,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 292 [2023-08-04 05:52:28,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:52:31,033 INFO L124 PetriNetUnfolderBase]: 12873/19847 cut-off events. [2023-08-04 05:52:31,033 INFO L125 PetriNetUnfolderBase]: For 117/117 co-relation queries the response was YES. [2023-08-04 05:52:31,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38656 conditions, 19847 events. 12873/19847 cut-off events. For 117/117 co-relation queries the response was YES. Maximal size of possible extension queue 763. Compared 140275 event pairs, 3816 based on Foata normal form. 0/18122 useless extension candidates. Maximal degree in co-relation 32364. Up to 12394 conditions per place. [2023-08-04 05:52:31,139 INFO L140 encePairwiseOnDemand]: 288/292 looper letters, 56 selfloop transitions, 2 changer transitions 7/69 dead transitions. [2023-08-04 05:52:31,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 69 transitions, 289 flow [2023-08-04 05:52:31,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 05:52:31,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 05:52:31,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 481 transitions. [2023-08-04 05:52:31,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5490867579908676 [2023-08-04 05:52:31,150 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 481 transitions. [2023-08-04 05:52:31,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 481 transitions. [2023-08-04 05:52:31,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:52:31,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 481 transitions. [2023-08-04 05:52:31,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:52:31,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:52:31,160 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:52:31,162 INFO L175 Difference]: Start difference. First operand has 51 places, 43 transitions, 106 flow. Second operand 3 states and 481 transitions. [2023-08-04 05:52:31,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 69 transitions, 289 flow [2023-08-04 05:52:31,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 69 transitions, 289 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 05:52:31,166 INFO L231 Difference]: Finished difference. Result has 52 places, 36 transitions, 88 flow [2023-08-04 05:52:31,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=52, PETRI_TRANSITIONS=36} [2023-08-04 05:52:31,170 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 1 predicate places. [2023-08-04 05:52:31,170 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 36 transitions, 88 flow [2023-08-04 05:52:31,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:52:31,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:52:31,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:52:31,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 05:52:31,171 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 05:52:31,171 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:52:31,171 INFO L85 PathProgramCache]: Analyzing trace with hash 2015368495, now seen corresponding path program 1 times [2023-08-04 05:52:31,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:52:31,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865839634] [2023-08-04 05:52:31,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:52:31,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:52:31,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:52:31,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 05:52:31,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:52:31,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865839634] [2023-08-04 05:52:31,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865839634] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:52:31,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 05:52:31,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 05:52:31,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472593349] [2023-08-04 05:52:31,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:52:31,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:52:31,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:52:31,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:52:31,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 05:52:31,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 292 [2023-08-04 05:52:31,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 36 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:52:31,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:52:31,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 292 [2023-08-04 05:52:31,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:52:32,528 INFO L124 PetriNetUnfolderBase]: 9395/13670 cut-off events. [2023-08-04 05:52:32,528 INFO L125 PetriNetUnfolderBase]: For 1009/1009 co-relation queries the response was YES. [2023-08-04 05:52:32,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28135 conditions, 13670 events. 9395/13670 cut-off events. For 1009/1009 co-relation queries the response was YES. Maximal size of possible extension queue 527. Compared 81254 event pairs, 6512 based on Foata normal form. 0/12822 useless extension candidates. Maximal degree in co-relation 28119. Up to 13240 conditions per place. [2023-08-04 05:52:32,594 INFO L140 encePairwiseOnDemand]: 289/292 looper letters, 33 selfloop transitions, 2 changer transitions 1/40 dead transitions. [2023-08-04 05:52:32,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 40 transitions, 170 flow [2023-08-04 05:52:32,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 05:52:32,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 05:52:32,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 445 transitions. [2023-08-04 05:52:32,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5079908675799086 [2023-08-04 05:52:32,597 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 445 transitions. [2023-08-04 05:52:32,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 445 transitions. [2023-08-04 05:52:32,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:52:32,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 445 transitions. [2023-08-04 05:52:32,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:52:32,605 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:52:32,605 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:52:32,609 INFO L175 Difference]: Start difference. First operand has 52 places, 36 transitions, 88 flow. Second operand 3 states and 445 transitions. [2023-08-04 05:52:32,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 40 transitions, 170 flow [2023-08-04 05:52:32,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 40 transitions, 164 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 05:52:32,612 INFO L231 Difference]: Finished difference. Result has 48 places, 36 transitions, 92 flow [2023-08-04 05:52:32,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=48, PETRI_TRANSITIONS=36} [2023-08-04 05:52:32,613 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -3 predicate places. [2023-08-04 05:52:32,613 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 36 transitions, 92 flow [2023-08-04 05:52:32,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:52:32,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:52:32,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:52:32,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-04 05:52:32,614 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 05:52:32,615 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:52:32,615 INFO L85 PathProgramCache]: Analyzing trace with hash 660422842, now seen corresponding path program 1 times [2023-08-04 05:52:32,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:52:32,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389158342] [2023-08-04 05:52:32,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:52:32,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:52:32,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:52:32,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 05:52:32,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:52:32,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389158342] [2023-08-04 05:52:32,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389158342] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 05:52:32,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892577380] [2023-08-04 05:52:32,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:52:32,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:52:32,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 05:52:32,731 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 05:52:32,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-04 05:52:32,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:52:32,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 05:52:32,827 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 05:52:32,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 05:52:32,838 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 05:52:32,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892577380] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:52:32,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 05:52:32,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 05:52:32,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827788618] [2023-08-04 05:52:32,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:52:32,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:52:32,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:52:32,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:52:32,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 05:52:32,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 292 [2023-08-04 05:52:32,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 36 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:52:32,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:52:32,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 292 [2023-08-04 05:52:32,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:52:34,036 INFO L124 PetriNetUnfolderBase]: 7984/11483 cut-off events. [2023-08-04 05:52:34,036 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-08-04 05:52:34,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22784 conditions, 11483 events. 7984/11483 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 65947 event pairs, 5674 based on Foata normal form. 0/10890 useless extension candidates. Maximal degree in co-relation 22767. Up to 11037 conditions per place. [2023-08-04 05:52:34,131 INFO L140 encePairwiseOnDemand]: 289/292 looper letters, 36 selfloop transitions, 2 changer transitions 1/43 dead transitions. [2023-08-04 05:52:34,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 43 transitions, 184 flow [2023-08-04 05:52:34,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 05:52:34,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 05:52:34,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 448 transitions. [2023-08-04 05:52:34,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5114155251141552 [2023-08-04 05:52:34,133 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 448 transitions. [2023-08-04 05:52:34,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 448 transitions. [2023-08-04 05:52:34,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:52:34,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 448 transitions. [2023-08-04 05:52:34,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:52:34,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:52:34,135 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:52:34,136 INFO L175 Difference]: Start difference. First operand has 48 places, 36 transitions, 92 flow. Second operand 3 states and 448 transitions. [2023-08-04 05:52:34,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 43 transitions, 184 flow [2023-08-04 05:52:34,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 43 transitions, 180 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 05:52:34,137 INFO L231 Difference]: Finished difference. Result has 49 places, 36 transitions, 96 flow [2023-08-04 05:52:34,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=49, PETRI_TRANSITIONS=36} [2023-08-04 05:52:34,138 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -2 predicate places. [2023-08-04 05:52:34,138 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 36 transitions, 96 flow [2023-08-04 05:52:34,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:52:34,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:52:34,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:52:34,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-04 05:52:34,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:52:34,360 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 05:52:34,361 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:52:34,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1251856731, now seen corresponding path program 1 times [2023-08-04 05:52:34,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:52:34,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460227225] [2023-08-04 05:52:34,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:52:34,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:52:34,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:52:34,415 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 05:52:34,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:52:34,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460227225] [2023-08-04 05:52:34,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460227225] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 05:52:34,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110581225] [2023-08-04 05:52:34,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:52:34,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:52:34,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 05:52:34,418 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 05:52:34,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-04 05:52:34,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:52:34,503 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 05:52:34,503 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 05:52:34,508 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 05:52:34,508 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 05:52:34,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110581225] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:52:34,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 05:52:34,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 05:52:34,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093940152] [2023-08-04 05:52:34,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:52:34,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:52:34,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:52:34,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:52:34,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 05:52:34,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 292 [2023-08-04 05:52:34,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 36 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:52:34,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:52:34,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 292 [2023-08-04 05:52:34,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:52:35,347 INFO L124 PetriNetUnfolderBase]: 6824/9763 cut-off events. [2023-08-04 05:52:35,347 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2023-08-04 05:52:35,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19360 conditions, 9763 events. 6824/9763 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 53548 event pairs, 6056 based on Foata normal form. 0/9310 useless extension candidates. Maximal degree in co-relation 19343. Up to 9119 conditions per place. [2023-08-04 05:52:35,405 INFO L140 encePairwiseOnDemand]: 289/292 looper letters, 39 selfloop transitions, 2 changer transitions 1/46 dead transitions. [2023-08-04 05:52:35,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 46 transitions, 200 flow [2023-08-04 05:52:35,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 05:52:35,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 05:52:35,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 451 transitions. [2023-08-04 05:52:35,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5148401826484018 [2023-08-04 05:52:35,407 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 451 transitions. [2023-08-04 05:52:35,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 451 transitions. [2023-08-04 05:52:35,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:52:35,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 451 transitions. [2023-08-04 05:52:35,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.33333333333334) internal successors, (451), 3 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:52:35,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:52:35,413 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:52:35,413 INFO L175 Difference]: Start difference. First operand has 49 places, 36 transitions, 96 flow. Second operand 3 states and 451 transitions. [2023-08-04 05:52:35,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 46 transitions, 200 flow [2023-08-04 05:52:35,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 46 transitions, 196 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 05:52:35,416 INFO L231 Difference]: Finished difference. Result has 50 places, 36 transitions, 100 flow [2023-08-04 05:52:35,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=50, PETRI_TRANSITIONS=36} [2023-08-04 05:52:35,417 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -1 predicate places. [2023-08-04 05:52:35,418 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 36 transitions, 100 flow [2023-08-04 05:52:35,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:52:35,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:52:35,418 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:52:35,424 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-04 05:52:35,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-04 05:52:35,624 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 05:52:35,625 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:52:35,625 INFO L85 PathProgramCache]: Analyzing trace with hash -805735996, now seen corresponding path program 1 times [2023-08-04 05:52:35,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:52:35,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192565522] [2023-08-04 05:52:35,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:52:35,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:52:35,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:52:35,701 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 05:52:35,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:52:35,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192565522] [2023-08-04 05:52:35,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192565522] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 05:52:35,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921244006] [2023-08-04 05:52:35,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:52:35,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:52:35,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 05:52:35,703 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 05:52:35,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-04 05:52:35,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:52:35,804 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 05:52:35,805 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 05:52:35,820 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-04 05:52:35,820 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 05:52:35,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921244006] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:52:35,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 05:52:35,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 05:52:35,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963676295] [2023-08-04 05:52:35,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:52:35,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:52:35,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:52:35,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:52:35,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 05:52:35,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 292 [2023-08-04 05:52:35,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 36 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:52:35,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:52:35,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 292 [2023-08-04 05:52:35,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:52:36,748 INFO L124 PetriNetUnfolderBase]: 6392/8827 cut-off events. [2023-08-04 05:52:36,748 INFO L125 PetriNetUnfolderBase]: For 152/152 co-relation queries the response was YES. [2023-08-04 05:52:36,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17989 conditions, 8827 events. 6392/8827 cut-off events. For 152/152 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 44467 event pairs, 4872 based on Foata normal form. 0/8486 useless extension candidates. Maximal degree in co-relation 17971. Up to 7279 conditions per place. [2023-08-04 05:52:36,790 INFO L140 encePairwiseOnDemand]: 289/292 looper letters, 43 selfloop transitions, 2 changer transitions 1/50 dead transitions. [2023-08-04 05:52:36,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 50 transitions, 220 flow [2023-08-04 05:52:36,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 05:52:36,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 05:52:36,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 455 transitions. [2023-08-04 05:52:36,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.519406392694064 [2023-08-04 05:52:36,793 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 455 transitions. [2023-08-04 05:52:36,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 455 transitions. [2023-08-04 05:52:36,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:52:36,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 455 transitions. [2023-08-04 05:52:36,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:52:36,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:52:36,797 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:52:36,797 INFO L175 Difference]: Start difference. First operand has 50 places, 36 transitions, 100 flow. Second operand 3 states and 455 transitions. [2023-08-04 05:52:36,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 50 transitions, 220 flow [2023-08-04 05:52:36,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 50 transitions, 216 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 05:52:36,799 INFO L231 Difference]: Finished difference. Result has 51 places, 36 transitions, 104 flow [2023-08-04 05:52:36,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=51, PETRI_TRANSITIONS=36} [2023-08-04 05:52:36,800 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 0 predicate places. [2023-08-04 05:52:36,800 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 36 transitions, 104 flow [2023-08-04 05:52:36,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:52:36,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:52:36,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:52:36,816 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-04 05:52:37,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:52:37,007 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 05:52:37,010 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:52:37,010 INFO L85 PathProgramCache]: Analyzing trace with hash 260443665, now seen corresponding path program 1 times [2023-08-04 05:52:37,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:52:37,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904299] [2023-08-04 05:52:37,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:52:37,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:52:37,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:52:37,088 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-04 05:52:37,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:52:37,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904299] [2023-08-04 05:52:37,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904299] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 05:52:37,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120210647] [2023-08-04 05:52:37,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:52:37,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:52:37,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 05:52:37,105 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 05:52:37,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-04 05:52:37,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:52:37,191 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 05:52:37,192 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 05:52:37,219 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-04 05:52:37,219 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 05:52:37,238 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-04 05:52:37,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120210647] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 05:52:37,239 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 05:52:37,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 05:52:37,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139673132] [2023-08-04 05:52:37,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 05:52:37,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 05:52:37,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:52:37,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 05:52:37,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 05:52:37,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 292 [2023-08-04 05:52:37,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 36 transitions, 104 flow. Second operand has 5 states, 5 states have (on average 139.6) internal successors, (698), 5 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:52:37,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:52:37,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 292 [2023-08-04 05:52:37,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:52:37,266 INFO L124 PetriNetUnfolderBase]: 6/21 cut-off events. [2023-08-04 05:52:37,266 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:52:37,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 21 events. 6/21 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 29 event pairs, 0 based on Foata normal form. 4/25 useless extension candidates. Maximal degree in co-relation 47. Up to 14 conditions per place. [2023-08-04 05:52:37,267 INFO L140 encePairwiseOnDemand]: 289/292 looper letters, 0 selfloop transitions, 0 changer transitions 12/12 dead transitions. [2023-08-04 05:52:37,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 12 transitions, 51 flow [2023-08-04 05:52:37,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 05:52:37,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 05:52:37,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 552 transitions. [2023-08-04 05:52:37,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4726027397260274 [2023-08-04 05:52:37,268 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 552 transitions. [2023-08-04 05:52:37,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 552 transitions. [2023-08-04 05:52:37,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:52:37,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 552 transitions. [2023-08-04 05:52:37,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:52:37,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 292.0) internal successors, (1460), 5 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:52:37,272 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 292.0) internal successors, (1460), 5 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:52:37,272 INFO L175 Difference]: Start difference. First operand has 51 places, 36 transitions, 104 flow. Second operand 4 states and 552 transitions. [2023-08-04 05:52:37,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 12 transitions, 51 flow [2023-08-04 05:52:37,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 12 transitions, 49 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 05:52:37,272 INFO L231 Difference]: Finished difference. Result has 21 places, 0 transitions, 0 flow [2023-08-04 05:52:37,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=19, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=21, PETRI_TRANSITIONS=0} [2023-08-04 05:52:37,273 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -30 predicate places. [2023-08-04 05:52:37,273 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 0 transitions, 0 flow [2023-08-04 05:52:37,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 139.6) internal successors, (698), 5 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:52:37,276 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-04 05:52:37,276 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-04 05:52:37,276 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-08-04 05:52:37,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-04 05:52:37,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:52:37,482 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-08-04 05:52:37,483 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE (1/2) [2023-08-04 05:52:37,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 159 transitions, 338 flow [2023-08-04 05:52:37,554 INFO L124 PetriNetUnfolderBase]: 62/933 cut-off events. [2023-08-04 05:52:37,555 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:52:37,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 983 conditions, 933 events. 62/933 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5779 event pairs, 0 based on Foata normal form. 0/824 useless extension candidates. Maximal degree in co-relation 554. Up to 32 conditions per place. [2023-08-04 05:52:37,557 INFO L82 GeneralOperation]: Start removeDead. Operand has 162 places, 159 transitions, 338 flow [2023-08-04 05:52:37,558 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 134 places, 128 transitions, 276 flow [2023-08-04 05:52:37,558 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 05:52:37,559 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 134 places, 128 transitions, 276 flow [2023-08-04 05:52:37,559 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 134 places, 128 transitions, 276 flow [2023-08-04 05:52:37,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 128 transitions, 276 flow [2023-08-04 05:52:37,587 INFO L124 PetriNetUnfolderBase]: 14/437 cut-off events. [2023-08-04 05:52:37,588 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:52:37,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 487 conditions, 437 events. 14/437 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1996 event pairs, 0 based on Foata normal form. 0/408 useless extension candidates. Maximal degree in co-relation 306. Up to 16 conditions per place. [2023-08-04 05:52:37,592 INFO L119 LiptonReduction]: Number of co-enabled transitions 2624 [2023-08-04 05:52:40,238 INFO L134 LiptonReduction]: Checked pairs total: 7647 [2023-08-04 05:52:40,239 INFO L136 LiptonReduction]: Total number of compositions: 98 [2023-08-04 05:52:40,244 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 05:52:40,248 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;@49f20e0e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 05:52:40,248 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 05:52:40,252 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 05:52:40,253 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2023-08-04 05:52:40,253 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:52:40,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:52:40,253 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 05:52:40,253 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 05:52:40,253 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:52:40,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1302179669, now seen corresponding path program 1 times [2023-08-04 05:52:40,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:52:40,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122544640] [2023-08-04 05:52:40,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:52:40,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:52:40,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 05:52:40,275 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 05:52:40,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 05:52:40,301 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 05:52:40,301 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 05:52:40,301 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-04 05:52:40,301 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-04 05:52:40,301 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-04 05:52:40,301 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-04 05:52:40,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-04 05:52:40,302 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 05:52:40,302 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN (2/2) [2023-08-04 05:52:40,303 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 05:52:40,303 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 05:52:40,338 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 05:52:40,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 204 places, 193 transitions, 434 flow [2023-08-04 05:52:40,755 INFO L124 PetriNetUnfolderBase]: 282/4325 cut-off events. [2023-08-04 05:52:40,756 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-04 05:52:40,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4614 conditions, 4325 events. 282/4325 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 41933 event pairs, 0 based on Foata normal form. 0/3840 useless extension candidates. Maximal degree in co-relation 3120. Up to 162 conditions per place. [2023-08-04 05:52:40,773 INFO L82 GeneralOperation]: Start removeDead. Operand has 204 places, 193 transitions, 434 flow [2023-08-04 05:52:40,779 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 204 places, 193 transitions, 434 flow [2023-08-04 05:52:40,779 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 05:52:40,779 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 204 places, 193 transitions, 434 flow [2023-08-04 05:52:40,779 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 204 places, 193 transitions, 434 flow [2023-08-04 05:52:40,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 204 places, 193 transitions, 434 flow [2023-08-04 05:52:41,104 INFO L124 PetriNetUnfolderBase]: 282/4325 cut-off events. [2023-08-04 05:52:41,104 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-04 05:52:41,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4614 conditions, 4325 events. 282/4325 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 41933 event pairs, 0 based on Foata normal form. 0/3840 useless extension candidates. Maximal degree in co-relation 3120. Up to 162 conditions per place. [2023-08-04 05:52:41,193 INFO L119 LiptonReduction]: Number of co-enabled transitions 11008 [2023-08-04 05:52:44,373 INFO L134 LiptonReduction]: Checked pairs total: 35853 [2023-08-04 05:52:44,373 INFO L136 LiptonReduction]: Total number of compositions: 142 [2023-08-04 05:52:44,375 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 05:52:44,375 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;@49f20e0e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 05:52:44,375 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 05:52:44,377 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 05:52:44,377 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2023-08-04 05:52:44,377 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:52:44,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:52:44,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-04 05:52:44,377 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 05:52:44,377 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:52:44,377 INFO L85 PathProgramCache]: Analyzing trace with hash 35049828, now seen corresponding path program 1 times [2023-08-04 05:52:44,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:52:44,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408105422] [2023-08-04 05:52:44,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:52:44,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:52:44,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:52:44,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 05:52:44,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:52:44,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408105422] [2023-08-04 05:52:44,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408105422] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:52:44,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 05:52:44,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-04 05:52:44,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285469822] [2023-08-04 05:52:44,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:52:44,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:52:44,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:52:44,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:52:44,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 05:52:44,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 335 [2023-08-04 05:52:44,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 69 transitions, 186 flow. Second operand has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:52:44,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:52:44,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 335 [2023-08-04 05:52:44,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand