/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_mix030_tso_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 05:57:38,546 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 05:57:38,593 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 05:57:38,595 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 05:57:38,595 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 05:57:38,596 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 05:57:38,596 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 05:57:38,610 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 05:57:38,610 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 05:57:38,611 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 05:57:38,611 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 05:57:38,611 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 05:57:38,612 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 05:57:38,612 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 05:57:38,612 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 05:57:38,612 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 05:57:38,615 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 05:57:38,617 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 05:57:38,617 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 05:57:38,617 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 05:57:38,618 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 05:57:38,618 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 05:57:38,619 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 05:57:38,619 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 05:57:38,620 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 05:57:38,620 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 05:57:38,620 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 05:57:38,620 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 05:57:38,620 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 05:57:38,621 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 05:57:38,621 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 05:57:38,622 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 05:57:38,622 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 05:57:38,622 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 05:57:38,622 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 05:57:38,622 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 05:57:38,622 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 05:57:38,622 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 05:57:38,622 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 05:57:38,622 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 05:57:38,622 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 05:57:38,623 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 05:57:38,816 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 05:57:38,832 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 05:57:38,835 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 05:57:38,836 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 05:57:38,836 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 05:57:38,837 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix030_tso_bound2.i [2023-08-04 05:57:39,918 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 05:57:40,142 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 05:57:40,142 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix030_tso_bound2.i [2023-08-04 05:57:40,154 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a854a51c/d5c97546b9004cc193a63c8a999ef90c/FLAGe2d3832dc [2023-08-04 05:57:40,166 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a854a51c/d5c97546b9004cc193a63c8a999ef90c [2023-08-04 05:57:40,168 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 05:57:40,169 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 05:57:40,170 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 05:57:40,171 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 05:57:40,173 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 05:57:40,174 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 05:57:40" (1/1) ... [2023-08-04 05:57:40,175 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@134ff837 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:57:40, skipping insertion in model container [2023-08-04 05:57:40,175 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 05:57:40" (1/1) ... [2023-08-04 05:57:40,212 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 05:57:40,363 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_mix030_tso_bound2.i[944,957] [2023-08-04 05:57:40,540 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 05:57:40,557 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 05:57:40,564 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_mix030_tso_bound2.i[944,957] [2023-08-04 05:57:40,584 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 05:57:40,585 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 05:57:40,620 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 05:57:40,651 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 05:57:40,652 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 05:57:40,656 INFO L206 MainTranslator]: Completed translation [2023-08-04 05:57:40,658 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:57:40 WrapperNode [2023-08-04 05:57:40,658 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 05:57:40,659 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 05:57:40,659 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 05:57:40,659 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 05:57:40,664 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:57:40" (1/1) ... [2023-08-04 05:57:40,688 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:57:40" (1/1) ... [2023-08-04 05:57:40,728 INFO L138 Inliner]: procedures = 177, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 212 [2023-08-04 05:57:40,729 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 05:57:40,729 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 05:57:40,729 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 05:57:40,729 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 05:57:40,735 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:57:40" (1/1) ... [2023-08-04 05:57:40,735 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:57:40" (1/1) ... [2023-08-04 05:57:40,738 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:57:40" (1/1) ... [2023-08-04 05:57:40,738 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:57:40" (1/1) ... [2023-08-04 05:57:40,745 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:57:40" (1/1) ... [2023-08-04 05:57:40,751 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:57:40" (1/1) ... [2023-08-04 05:57:40,757 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:57:40" (1/1) ... [2023-08-04 05:57:40,759 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:57:40" (1/1) ... [2023-08-04 05:57:40,762 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 05:57:40,762 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 05:57:40,762 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 05:57:40,762 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 05:57:40,777 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:57:40" (1/1) ... [2023-08-04 05:57:40,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 05:57:40,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 05:57:40,848 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 05:57:40,872 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 05:57:40,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 05:57:40,893 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 05:57:40,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 05:57:40,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 05:57:40,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 05:57:40,893 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-04 05:57:40,893 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-04 05:57:40,893 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-04 05:57:40,893 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-04 05:57:40,893 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-04 05:57:40,893 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-04 05:57:40,893 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-04 05:57:40,893 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-04 05:57:40,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 05:57:40,894 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 05:57:40,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 05:57:40,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 05:57:40,895 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 05:57:41,026 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 05:57:41,028 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 05:57:41,289 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 05:57:41,384 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 05:57:41,385 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-04 05:57:41,387 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 05:57:41 BoogieIcfgContainer [2023-08-04 05:57:41,387 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 05:57:41,389 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 05:57:41,390 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 05:57:41,392 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 05:57:41,394 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 05:57:40" (1/3) ... [2023-08-04 05:57:41,394 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23715c3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 05:57:41, skipping insertion in model container [2023-08-04 05:57:41,394 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:57:40" (2/3) ... [2023-08-04 05:57:41,394 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23715c3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 05:57:41, skipping insertion in model container [2023-08-04 05:57:41,395 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 05:57:41" (3/3) ... [2023-08-04 05:57:41,395 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_mix030_tso_bound2.i [2023-08-04 05:57:41,401 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 05:57:41,407 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 05:57:41,407 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-04 05:57:41,407 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 05:57:41,460 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 05:57:41,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 155 transitions, 330 flow [2023-08-04 05:57:41,681 INFO L124 PetriNetUnfolderBase]: 62/935 cut-off events. [2023-08-04 05:57:41,682 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:57:41,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 985 conditions, 935 events. 62/935 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5816 event pairs, 0 based on Foata normal form. 0/819 useless extension candidates. Maximal degree in co-relation 548. Up to 32 conditions per place. [2023-08-04 05:57:41,689 INFO L82 GeneralOperation]: Start removeDead. Operand has 158 places, 155 transitions, 330 flow [2023-08-04 05:57:41,696 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 155 places, 152 transitions, 318 flow [2023-08-04 05:57:41,698 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 05:57:41,707 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 155 places, 152 transitions, 318 flow [2023-08-04 05:57:41,710 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 155 places, 152 transitions, 318 flow [2023-08-04 05:57:41,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 155 places, 152 transitions, 318 flow [2023-08-04 05:57:41,813 INFO L124 PetriNetUnfolderBase]: 62/928 cut-off events. [2023-08-04 05:57:41,814 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:57:41,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 971 conditions, 928 events. 62/928 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5745 event pairs, 0 based on Foata normal form. 0/812 useless extension candidates. Maximal degree in co-relation 534. Up to 32 conditions per place. [2023-08-04 05:57:41,828 INFO L119 LiptonReduction]: Number of co-enabled transitions 3914 [2023-08-04 05:57:45,930 INFO L134 LiptonReduction]: Checked pairs total: 9572 [2023-08-04 05:57:45,931 INFO L136 LiptonReduction]: Total number of compositions: 131 [2023-08-04 05:57:45,940 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 05:57:45,943 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;@392a2b9b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 05:57:45,944 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 05:57:45,947 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 05:57:45,947 INFO L124 PetriNetUnfolderBase]: 0/32 cut-off events. [2023-08-04 05:57:45,947 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:57:45,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:57:45,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:57:45,948 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 05:57:45,951 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:57:45,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1960547445, now seen corresponding path program 1 times [2023-08-04 05:57:45,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:57:45,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842813956] [2023-08-04 05:57:45,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:57:45,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:57:46,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:57:46,135 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 05:57:46,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:57:46,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842813956] [2023-08-04 05:57:46,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842813956] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:57:46,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 05:57:46,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 05:57:46,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559240898] [2023-08-04 05:57:46,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:57:46,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:57:46,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:57:46,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:57:46,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 05:57:46,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 286 [2023-08-04 05:57:46,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 37 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 135.33333333333334) internal successors, (406), 3 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:57:46,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:57:46,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 286 [2023-08-04 05:57:46,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:57:47,176 INFO L124 PetriNetUnfolderBase]: 7194/10701 cut-off events. [2023-08-04 05:57:47,176 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2023-08-04 05:57:47,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21193 conditions, 10701 events. 7194/10701 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 65676 event pairs, 6164 based on Foata normal form. 0/9345 useless extension candidates. Maximal degree in co-relation 21179. Up to 10282 conditions per place. [2023-08-04 05:57:47,225 INFO L140 encePairwiseOnDemand]: 283/286 looper letters, 32 selfloop transitions, 2 changer transitions 1/40 dead transitions. [2023-08-04 05:57:47,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 40 transitions, 164 flow [2023-08-04 05:57:47,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 05:57:47,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 05:57:47,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 435 transitions. [2023-08-04 05:57:47,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.506993006993007 [2023-08-04 05:57:47,236 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 435 transitions. [2023-08-04 05:57:47,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 435 transitions. [2023-08-04 05:57:47,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:57:47,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 435 transitions. [2023-08-04 05:57:47,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 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 05:57:47,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 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 05:57:47,246 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 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 05:57:47,247 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 88 flow. Second operand 3 states and 435 transitions. [2023-08-04 05:57:47,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 40 transitions, 164 flow [2023-08-04 05:57:47,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 40 transitions, 164 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 05:57:47,250 INFO L231 Difference]: Finished difference. Result has 49 places, 37 transitions, 96 flow [2023-08-04 05:57:47,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=49, PETRI_TRANSITIONS=37} [2023-08-04 05:57:47,254 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 3 predicate places. [2023-08-04 05:57:47,254 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 37 transitions, 96 flow [2023-08-04 05:57:47,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.33333333333334) internal successors, (406), 3 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:57:47,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:57:47,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:57:47,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 05:57:47,255 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 05:57:47,256 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:57:47,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1831637064, now seen corresponding path program 1 times [2023-08-04 05:57:47,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:57:47,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230622952] [2023-08-04 05:57:47,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:57:47,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:57:47,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:57:47,365 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 05:57:47,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:57:47,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230622952] [2023-08-04 05:57:47,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230622952] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 05:57:47,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314712879] [2023-08-04 05:57:47,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:57:47,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:57:47,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 05:57:47,383 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 05:57:47,413 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 05:57:47,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:57:47,467 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 05:57:47,470 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 05:57:47,478 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 05:57:47,478 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 05:57:47,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314712879] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:57:47,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 05:57:47,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 05:57:47,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972784559] [2023-08-04 05:57:47,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:57:47,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:57:47,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:57:47,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:57:47,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 05:57:47,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 286 [2023-08-04 05:57:47,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 37 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:57:47,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:57:47,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 286 [2023-08-04 05:57:47,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:57:48,152 INFO L124 PetriNetUnfolderBase]: 5786/8417 cut-off events. [2023-08-04 05:57:48,152 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-08-04 05:57:48,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16703 conditions, 8417 events. 5786/8417 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 48860 event pairs, 4240 based on Foata normal form. 0/7408 useless extension candidates. Maximal degree in co-relation 16686. Up to 8092 conditions per place. [2023-08-04 05:57:48,182 INFO L140 encePairwiseOnDemand]: 283/286 looper letters, 34 selfloop transitions, 2 changer transitions 1/42 dead transitions. [2023-08-04 05:57:48,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 42 transitions, 180 flow [2023-08-04 05:57:48,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 05:57:48,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 05:57:48,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 437 transitions. [2023-08-04 05:57:48,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5093240093240093 [2023-08-04 05:57:48,185 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 437 transitions. [2023-08-04 05:57:48,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 437 transitions. [2023-08-04 05:57:48,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:57:48,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 437 transitions. [2023-08-04 05:57:48,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 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 05:57:48,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 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 05:57:48,189 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 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 05:57:48,189 INFO L175 Difference]: Start difference. First operand has 49 places, 37 transitions, 96 flow. Second operand 3 states and 437 transitions. [2023-08-04 05:57:48,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 42 transitions, 180 flow [2023-08-04 05:57:48,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 42 transitions, 176 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 05:57:48,191 INFO L231 Difference]: Finished difference. Result has 50 places, 37 transitions, 100 flow [2023-08-04 05:57:48,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=50, PETRI_TRANSITIONS=37} [2023-08-04 05:57:48,192 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 4 predicate places. [2023-08-04 05:57:48,192 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 37 transitions, 100 flow [2023-08-04 05:57:48,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:57:48,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:57:48,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:57:48,200 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-04 05:57:48,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:57:48,401 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 05:57:48,402 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:57:48,402 INFO L85 PathProgramCache]: Analyzing trace with hash 291280338, now seen corresponding path program 1 times [2023-08-04 05:57:48,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:57:48,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527084203] [2023-08-04 05:57:48,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:57:48,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:57:48,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:57:48,482 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 05:57:48,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:57:48,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527084203] [2023-08-04 05:57:48,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527084203] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 05:57:48,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743852831] [2023-08-04 05:57:48,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:57:48,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:57:48,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 05:57:48,712 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 05:57:48,714 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 05:57:48,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:57:48,817 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 05:57:48,818 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 05:57:48,826 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 05:57:48,827 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 05:57:48,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1743852831] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:57:48,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 05:57:48,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 05:57:48,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706472078] [2023-08-04 05:57:48,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:57:48,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:57:48,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:57:48,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:57:48,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 05:57:48,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 286 [2023-08-04 05:57:48,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 37 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:57:48,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:57:48,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 286 [2023-08-04 05:57:48,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:57:49,620 INFO L124 PetriNetUnfolderBase]: 4940/7139 cut-off events. [2023-08-04 05:57:49,621 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2023-08-04 05:57:49,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14156 conditions, 7139 events. 4940/7139 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 39385 event pairs, 4400 based on Foata normal form. 0/6343 useless extension candidates. Maximal degree in co-relation 14139. Up to 6713 conditions per place. [2023-08-04 05:57:49,650 INFO L140 encePairwiseOnDemand]: 283/286 looper letters, 37 selfloop transitions, 2 changer transitions 1/45 dead transitions. [2023-08-04 05:57:49,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 45 transitions, 196 flow [2023-08-04 05:57:49,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 05:57:49,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 05:57:49,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 440 transitions. [2023-08-04 05:57:49,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5128205128205128 [2023-08-04 05:57:49,652 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 440 transitions. [2023-08-04 05:57:49,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 440 transitions. [2023-08-04 05:57:49,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:57:49,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 440 transitions. [2023-08-04 05:57:49,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 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 05:57:49,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 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 05:57:49,655 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 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 05:57:49,655 INFO L175 Difference]: Start difference. First operand has 50 places, 37 transitions, 100 flow. Second operand 3 states and 440 transitions. [2023-08-04 05:57:49,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 45 transitions, 196 flow [2023-08-04 05:57:49,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 45 transitions, 192 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 05:57:49,656 INFO L231 Difference]: Finished difference. Result has 51 places, 37 transitions, 104 flow [2023-08-04 05:57:49,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=51, PETRI_TRANSITIONS=37} [2023-08-04 05:57:49,657 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 5 predicate places. [2023-08-04 05:57:49,657 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 37 transitions, 104 flow [2023-08-04 05:57:49,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:57:49,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:57:49,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:57:49,663 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 05:57:49,863 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,SelfDestructingSolverStorable2 [2023-08-04 05:57:49,864 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 05:57:49,864 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:57:49,864 INFO L85 PathProgramCache]: Analyzing trace with hash 860287576, now seen corresponding path program 1 times [2023-08-04 05:57:49,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:57:49,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392583714] [2023-08-04 05:57:49,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:57:49,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:57:49,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:57:49,946 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 05:57:49,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:57:49,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392583714] [2023-08-04 05:57:49,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392583714] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 05:57:49,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4734357] [2023-08-04 05:57:49,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:57:49,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:57:49,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 05:57:49,962 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 05:57:49,963 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 05:57:50,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:57:50,045 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 05:57:50,046 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 05:57:50,054 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 05:57:50,054 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 05:57:50,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4734357] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:57:50,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 05:57:50,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 05:57:50,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868354482] [2023-08-04 05:57:50,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:57:50,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:57:50,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:57:50,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:57:50,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 05:57:50,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 286 [2023-08-04 05:57:50,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 37 transitions, 104 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 05:57:50,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:57:50,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 286 [2023-08-04 05:57:50,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:57:50,546 INFO L124 PetriNetUnfolderBase]: 4640/6593 cut-off events. [2023-08-04 05:57:50,546 INFO L125 PetriNetUnfolderBase]: For 75/75 co-relation queries the response was YES. [2023-08-04 05:57:50,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13380 conditions, 6593 events. 4640/6593 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 34930 event pairs, 3320 based on Foata normal form. 0/5896 useless extension candidates. Maximal degree in co-relation 13362. Up to 5507 conditions per place. [2023-08-04 05:57:50,575 INFO L140 encePairwiseOnDemand]: 283/286 looper letters, 43 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2023-08-04 05:57:50,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 50 transitions, 220 flow [2023-08-04 05:57:50,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 05:57:50,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 05:57:50,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 445 transitions. [2023-08-04 05:57:50,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5186480186480187 [2023-08-04 05:57:50,576 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 445 transitions. [2023-08-04 05:57:50,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 445 transitions. [2023-08-04 05:57:50,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:57:50,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 445 transitions. [2023-08-04 05:57:50,577 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 05:57:50,579 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 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 05:57:50,579 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 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 05:57:50,580 INFO L175 Difference]: Start difference. First operand has 51 places, 37 transitions, 104 flow. Second operand 3 states and 445 transitions. [2023-08-04 05:57:50,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 50 transitions, 220 flow [2023-08-04 05:57:50,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 50 transitions, 216 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 05:57:50,582 INFO L231 Difference]: Finished difference. Result has 52 places, 37 transitions, 108 flow [2023-08-04 05:57:50,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=52, PETRI_TRANSITIONS=37} [2023-08-04 05:57:50,584 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 6 predicate places. [2023-08-04 05:57:50,584 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 37 transitions, 108 flow [2023-08-04 05:57:50,584 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 05:57:50,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:57:50,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:57:50,613 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 05:57:50,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:57:50,797 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 05:57:50,797 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:57:50,797 INFO L85 PathProgramCache]: Analyzing trace with hash 860267340, now seen corresponding path program 1 times [2023-08-04 05:57:50,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:57:50,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299257334] [2023-08-04 05:57:50,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:57:50,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:57:50,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:57:50,837 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 05:57:50,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:57:50,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299257334] [2023-08-04 05:57:50,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299257334] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 05:57:50,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801582034] [2023-08-04 05:57:50,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:57:50,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:57:50,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 05:57:50,854 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 05:57:50,909 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 05:57:51,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:57:51,006 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 05:57:51,008 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 05:57:51,025 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 05:57:51,025 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 05:57:51,038 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 05:57:51,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801582034] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 05:57:51,038 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 05:57:51,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2023-08-04 05:57:51,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673859533] [2023-08-04 05:57:51,039 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 05:57:51,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-04 05:57:51,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:57:51,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-04 05:57:51,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-04 05:57:51,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 286 [2023-08-04 05:57:51,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 37 transitions, 108 flow. Second operand has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 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 05:57:51,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:57:51,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 286 [2023-08-04 05:57:51,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:57:51,058 INFO L124 PetriNetUnfolderBase]: 4/16 cut-off events. [2023-08-04 05:57:51,059 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:57:51,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 16 events. 4/16 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 20 event pairs, 0 based on Foata normal form. 3/19 useless extension candidates. Maximal degree in co-relation 36. Up to 10 conditions per place. [2023-08-04 05:57:51,059 INFO L140 encePairwiseOnDemand]: 283/286 looper letters, 0 selfloop transitions, 0 changer transitions 10/10 dead transitions. [2023-08-04 05:57:51,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 10 transitions, 43 flow [2023-08-04 05:57:51,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 05:57:51,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 05:57:51,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 538 transitions. [2023-08-04 05:57:51,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47027972027972026 [2023-08-04 05:57:51,060 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 538 transitions. [2023-08-04 05:57:51,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 538 transitions. [2023-08-04 05:57:51,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:57:51,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 538 transitions. [2023-08-04 05:57:51,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 134.5) internal successors, (538), 4 states have internal predecessors, (538), 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 05:57:51,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 286.0) internal successors, (1430), 5 states have internal predecessors, (1430), 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 05:57:51,064 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 286.0) internal successors, (1430), 5 states have internal predecessors, (1430), 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 05:57:51,064 INFO L175 Difference]: Start difference. First operand has 52 places, 37 transitions, 108 flow. Second operand 4 states and 538 transitions. [2023-08-04 05:57:51,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 10 transitions, 43 flow [2023-08-04 05:57:51,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 10 transitions, 41 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 05:57:51,064 INFO L231 Difference]: Finished difference. Result has 20 places, 0 transitions, 0 flow [2023-08-04 05:57:51,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=17, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=20, PETRI_TRANSITIONS=0} [2023-08-04 05:57:51,065 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -26 predicate places. [2023-08-04 05:57:51,065 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 0 transitions, 0 flow [2023-08-04 05:57:51,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 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 05:57:51,067 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-04 05:57:51,067 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-04 05:57:51,067 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-08-04 05:57:51,089 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 05:57:51,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:57:51,279 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-04 05:57:51,281 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE (1/2) [2023-08-04 05:57:51,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 155 transitions, 330 flow [2023-08-04 05:57:51,356 INFO L124 PetriNetUnfolderBase]: 62/935 cut-off events. [2023-08-04 05:57:51,357 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:57:51,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 985 conditions, 935 events. 62/935 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5816 event pairs, 0 based on Foata normal form. 0/819 useless extension candidates. Maximal degree in co-relation 548. Up to 32 conditions per place. [2023-08-04 05:57:51,359 INFO L82 GeneralOperation]: Start removeDead. Operand has 158 places, 155 transitions, 330 flow [2023-08-04 05:57:51,360 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 130 places, 124 transitions, 268 flow [2023-08-04 05:57:51,360 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 05:57:51,360 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 130 places, 124 transitions, 268 flow [2023-08-04 05:57:51,360 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 130 places, 124 transitions, 268 flow [2023-08-04 05:57:51,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 130 places, 124 transitions, 268 flow [2023-08-04 05:57:51,390 INFO L124 PetriNetUnfolderBase]: 14/439 cut-off events. [2023-08-04 05:57:51,391 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:57:51,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 489 conditions, 439 events. 14/439 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2032 event pairs, 0 based on Foata normal form. 0/403 useless extension candidates. Maximal degree in co-relation 300. Up to 16 conditions per place. [2023-08-04 05:57:51,395 INFO L119 LiptonReduction]: Number of co-enabled transitions 2252 [2023-08-04 05:57:54,089 INFO L134 LiptonReduction]: Checked pairs total: 5511 [2023-08-04 05:57:54,089 INFO L136 LiptonReduction]: Total number of compositions: 96 [2023-08-04 05:57:54,090 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 05:57:54,091 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;@392a2b9b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 05:57:54,091 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 05:57:54,093 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 05:57:54,093 INFO L124 PetriNetUnfolderBase]: 0/19 cut-off events. [2023-08-04 05:57:54,093 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:57:54,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:57:54,093 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 05:57:54,093 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 05:57:54,094 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:57:54,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1392897270, now seen corresponding path program 1 times [2023-08-04 05:57:54,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:57:54,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695303865] [2023-08-04 05:57:54,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:57:54,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:57:54,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 05:57:54,121 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 05:57:54,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 05:57:54,152 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 05:57:54,152 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 05:57:54,152 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-04 05:57:54,152 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-04 05:57:54,153 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-04 05:57:54,153 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-04 05:57:54,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-04 05:57:54,153 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 05:57:54,154 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN (2/2) [2023-08-04 05:57:54,154 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 05:57:54,154 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 05:57:54,179 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 05:57:54,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 187 transitions, 422 flow [2023-08-04 05:57:54,550 INFO L124 PetriNetUnfolderBase]: 282/4367 cut-off events. [2023-08-04 05:57:54,551 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-04 05:57:54,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4656 conditions, 4367 events. 282/4367 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 42701 event pairs, 0 based on Foata normal form. 0/3830 useless extension candidates. Maximal degree in co-relation 3135. Up to 162 conditions per place. [2023-08-04 05:57:54,572 INFO L82 GeneralOperation]: Start removeDead. Operand has 198 places, 187 transitions, 422 flow [2023-08-04 05:57:54,579 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 195 places, 184 transitions, 404 flow [2023-08-04 05:57:54,580 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 05:57:54,580 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 195 places, 184 transitions, 404 flow [2023-08-04 05:57:54,580 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 195 places, 184 transitions, 404 flow [2023-08-04 05:57:54,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 195 places, 184 transitions, 404 flow [2023-08-04 05:57:54,891 INFO L124 PetriNetUnfolderBase]: 282/4354 cut-off events. [2023-08-04 05:57:54,891 INFO L125 PetriNetUnfolderBase]: For 67/67 co-relation queries the response was YES. [2023-08-04 05:57:54,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4617 conditions, 4354 events. 282/4354 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 42509 event pairs, 0 based on Foata normal form. 0/3817 useless extension candidates. Maximal degree in co-relation 3105. Up to 162 conditions per place. [2023-08-04 05:57:54,972 INFO L119 LiptonReduction]: Number of co-enabled transitions 9600 [2023-08-04 05:57:58,894 INFO L134 LiptonReduction]: Checked pairs total: 25077 [2023-08-04 05:57:58,894 INFO L136 LiptonReduction]: Total number of compositions: 140 [2023-08-04 05:57:58,896 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 05:57:58,896 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;@392a2b9b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 05:57:58,896 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 05:57:58,899 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 05:57:58,899 INFO L124 PetriNetUnfolderBase]: 0/34 cut-off events. [2023-08-04 05:57:58,899 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-04 05:57:58,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:57:58,899 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:57:58,900 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 05:57:58,900 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:57:58,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1237579235, now seen corresponding path program 1 times [2023-08-04 05:57:58,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:57:58,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144223863] [2023-08-04 05:57:58,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:57:58,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:57:58,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:57:58,930 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 05:57:58,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:57:58,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144223863] [2023-08-04 05:57:58,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144223863] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:57:58,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 05:57:58,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 05:57:58,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644803498] [2023-08-04 05:57:58,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:57:58,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:57:58,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:57:58,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:57:58,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 05:57:58,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 327 [2023-08-04 05:57:58,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 61 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:57:58,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:57:58,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 327 [2023-08-04 05:57:58,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand