/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe007_pso.oepc_pso.opt_tso.oepc_tso.opt-thin001_pso.oepc_pso.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 11:47:27,578 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 11:47:27,660 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-24 11:47:27,668 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 11:47:27,668 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 11:47:27,705 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 11:47:27,706 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 11:47:27,706 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 11:47:27,707 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 11:47:27,710 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 11:47:27,710 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 11:47:27,711 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 11:47:27,711 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 11:47:27,712 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 11:47:27,712 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 11:47:27,713 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 11:47:27,713 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 11:47:27,713 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 11:47:27,713 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 11:47:27,713 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 11:47:27,713 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 11:47:27,714 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 11:47:27,714 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 11:47:27,715 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 11:47:27,715 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 11:47:27,715 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 11:47:27,715 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 11:47:27,715 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 11:47:27,716 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 11:47:27,716 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 11:47:27,717 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 11:47:27,717 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 11:47:27,717 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 11:47:27,717 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 11:47:27,717 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 11:47:27,718 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-24 11:47:28,026 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 11:47:28,045 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 11:47:28,047 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 11:47:28,048 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 11:47:28,050 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 11:47:28,052 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe007_pso.oepc_pso.opt_tso.oepc_tso.opt-thin001_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-24 11:47:29,334 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 11:47:29,570 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 11:47:29,570 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe007_pso.oepc_pso.opt_tso.oepc_tso.opt-thin001_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-24 11:47:29,582 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea9f38f5c/1f1f1195714a40e89b7d9f53166f7af5/FLAG412116d0a [2023-08-24 11:47:29,595 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea9f38f5c/1f1f1195714a40e89b7d9f53166f7af5 [2023-08-24 11:47:29,597 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 11:47:29,598 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 11:47:29,599 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 11:47:29,599 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 11:47:29,602 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 11:47:29,602 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 11:47:29" (1/1) ... [2023-08-24 11:47:29,603 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51dd4c9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:47:29, skipping insertion in model container [2023-08-24 11:47:29,603 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 11:47:29" (1/1) ... [2023-08-24 11:47:29,645 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 11:47:29,822 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe007_pso.oepc_pso.opt_tso.oepc_tso.opt-thin001_pso.oepc_pso.opt_tso.oepc_tso.opt.i[1017,1030] [2023-08-24 11:47:29,997 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 11:47:30,008 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 11:47:30,022 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe007_pso.oepc_pso.opt_tso.oepc_tso.opt-thin001_pso.oepc_pso.opt_tso.oepc_tso.opt.i[1017,1030] [2023-08-24 11:47:30,039 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-24 11:47:30,041 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-24 11:47:30,063 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 11:47:30,098 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 11:47:30,099 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 11:47:30,105 INFO L206 MainTranslator]: Completed translation [2023-08-24 11:47:30,105 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:47:30 WrapperNode [2023-08-24 11:47:30,105 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 11:47:30,106 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 11:47:30,107 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 11:47:30,107 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 11:47:30,113 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:47:30" (1/1) ... [2023-08-24 11:47:30,140 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:47:30" (1/1) ... [2023-08-24 11:47:30,163 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 72 [2023-08-24 11:47:30,163 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 11:47:30,164 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 11:47:30,164 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 11:47:30,164 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 11:47:30,171 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:47:30" (1/1) ... [2023-08-24 11:47:30,171 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:47:30" (1/1) ... [2023-08-24 11:47:30,188 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:47:30" (1/1) ... [2023-08-24 11:47:30,189 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:47:30" (1/1) ... [2023-08-24 11:47:30,194 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:47:30" (1/1) ... [2023-08-24 11:47:30,196 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:47:30" (1/1) ... [2023-08-24 11:47:30,197 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:47:30" (1/1) ... [2023-08-24 11:47:30,198 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:47:30" (1/1) ... [2023-08-24 11:47:30,199 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 11:47:30,200 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 11:47:30,200 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 11:47:30,200 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 11:47:30,201 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:47:30" (1/1) ... [2023-08-24 11:47:30,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 11:47:30,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 11:47:30,246 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) [2023-08-24 11:47:30,287 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 [2023-08-24 11:47:30,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 11:47:30,302 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-24 11:47:30,302 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 11:47:30,302 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 11:47:30,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 11:47:30,302 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-24 11:47:30,302 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-24 11:47:30,302 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-24 11:47:30,303 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-24 11:47:30,303 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-24 11:47:30,303 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-24 11:47:30,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 11:47:30,304 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-24 11:47:30,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 11:47:30,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 11:47:30,306 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 11:47:30,461 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 11:47:30,463 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 11:47:30,637 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 11:47:30,643 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 11:47:30,644 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-24 11:47:30,646 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 11:47:30 BoogieIcfgContainer [2023-08-24 11:47:30,646 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 11:47:30,648 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 11:47:30,648 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 11:47:30,651 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 11:47:30,651 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 11:47:29" (1/3) ... [2023-08-24 11:47:30,652 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27793c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 11:47:30, skipping insertion in model container [2023-08-24 11:47:30,652 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:47:30" (2/3) ... [2023-08-24 11:47:30,652 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27793c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 11:47:30, skipping insertion in model container [2023-08-24 11:47:30,652 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 11:47:30" (3/3) ... [2023-08-24 11:47:30,653 INFO L112 eAbstractionObserver]: Analyzing ICFG safe007_pso.oepc_pso.opt_tso.oepc_tso.opt-thin001_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-24 11:47:30,668 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 11:47:30,669 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 11:47:30,669 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 11:47:30,712 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 11:47:30,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 86 transitions, 187 flow [2023-08-24 11:47:30,780 INFO L124 PetriNetUnfolderBase]: 2/83 cut-off events. [2023-08-24 11:47:30,781 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 11:47:30,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 83 events. 2/83 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2023-08-24 11:47:30,785 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 86 transitions, 187 flow [2023-08-24 11:47:30,788 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 71 transitions, 151 flow [2023-08-24 11:47:30,792 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 11:47:30,800 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 80 places, 71 transitions, 151 flow [2023-08-24 11:47:30,802 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 80 places, 71 transitions, 151 flow [2023-08-24 11:47:30,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 71 transitions, 151 flow [2023-08-24 11:47:30,821 INFO L124 PetriNetUnfolderBase]: 1/71 cut-off events. [2023-08-24 11:47:30,821 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 11:47:30,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 71 events. 1/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 37 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-08-24 11:47:30,824 INFO L119 LiptonReduction]: Number of co-enabled transitions 1044 [2023-08-24 11:47:32,871 INFO L134 LiptonReduction]: Checked pairs total: 1982 [2023-08-24 11:47:32,871 INFO L136 LiptonReduction]: Total number of compositions: 59 [2023-08-24 11:47:32,891 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 11:47:32,902 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=false, 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;@2ccca6fe, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 11:47:32,902 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-24 11:47:32,912 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 11:47:32,912 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2023-08-24 11:47:32,912 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 11:47:32,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:47:32,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:47:32,914 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 11:47:32,919 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:47:32,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1603823166, now seen corresponding path program 1 times [2023-08-24 11:47:32,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:47:32,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146241591] [2023-08-24 11:47:32,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:47:32,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:47:33,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:47:33,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:47:33,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:47:33,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146241591] [2023-08-24 11:47:33,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146241591] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:47:33,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:47:33,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 11:47:33,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777429022] [2023-08-24 11:47:33,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:47:33,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 11:47:33,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:47:33,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 11:47:33,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 11:47:33,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 145 [2023-08-24 11:47:33,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 45 flow. Second operand has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 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) [2023-08-24 11:47:33,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:47:33,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 145 [2023-08-24 11:47:33,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:47:33,557 INFO L124 PetriNetUnfolderBase]: 161/302 cut-off events. [2023-08-24 11:47:33,558 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-08-24 11:47:33,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 599 conditions, 302 events. 161/302 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1287 event pairs, 81 based on Foata normal form. 1/303 useless extension candidates. Maximal degree in co-relation 588. Up to 260 conditions per place. [2023-08-24 11:47:33,563 INFO L140 encePairwiseOnDemand]: 139/145 looper letters, 18 selfloop transitions, 4 changer transitions 0/25 dead transitions. [2023-08-24 11:47:33,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 25 transitions, 109 flow [2023-08-24 11:47:33,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 11:47:33,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 11:47:33,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 244 transitions. [2023-08-24 11:47:33,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5609195402298851 [2023-08-24 11:47:33,580 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 244 transitions. [2023-08-24 11:47:33,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 244 transitions. [2023-08-24 11:47:33,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:47:33,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 244 transitions. [2023-08-24 11:47:33,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 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) [2023-08-24 11:47:33,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 145.0) internal successors, (580), 4 states have internal predecessors, (580), 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) [2023-08-24 11:47:33,594 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 145.0) internal successors, (580), 4 states have internal predecessors, (580), 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) [2023-08-24 11:47:33,596 INFO L175 Difference]: Start difference. First operand has 27 places, 18 transitions, 45 flow. Second operand 3 states and 244 transitions. [2023-08-24 11:47:33,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 25 transitions, 109 flow [2023-08-24 11:47:33,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 25 transitions, 104 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-24 11:47:33,599 INFO L231 Difference]: Finished difference. Result has 27 places, 20 transitions, 66 flow [2023-08-24 11:47:33,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=27, PETRI_TRANSITIONS=20} [2023-08-24 11:47:33,604 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2023-08-24 11:47:33,604 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 20 transitions, 66 flow [2023-08-24 11:47:33,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 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) [2023-08-24 11:47:33,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:47:33,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:47:33,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 11:47:33,606 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 11:47:33,606 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:47:33,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1821090019, now seen corresponding path program 1 times [2023-08-24 11:47:33,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:47:33,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345919359] [2023-08-24 11:47:33,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:47:33,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:47:33,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:47:33,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:47:33,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:47:33,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345919359] [2023-08-24 11:47:33,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345919359] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:47:33,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:47:33,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 11:47:33,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464179056] [2023-08-24 11:47:33,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:47:33,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 11:47:33,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:47:33,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 11:47:33,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-24 11:47:33,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 145 [2023-08-24 11:47:33,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 20 transitions, 66 flow. Second operand has 4 states, 4 states have (on average 75.25) internal successors, (301), 4 states have internal predecessors, (301), 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) [2023-08-24 11:47:33,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:47:33,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 145 [2023-08-24 11:47:33,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:47:33,896 INFO L124 PetriNetUnfolderBase]: 143/265 cut-off events. [2023-08-24 11:47:33,896 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2023-08-24 11:47:33,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 646 conditions, 265 events. 143/265 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1073 event pairs, 45 based on Foata normal form. 8/269 useless extension candidates. Maximal degree in co-relation 635. Up to 154 conditions per place. [2023-08-24 11:47:33,902 INFO L140 encePairwiseOnDemand]: 142/145 looper letters, 19 selfloop transitions, 3 changer transitions 0/25 dead transitions. [2023-08-24 11:47:33,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 25 transitions, 124 flow [2023-08-24 11:47:33,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 11:47:33,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 11:47:33,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 239 transitions. [2023-08-24 11:47:33,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5494252873563218 [2023-08-24 11:47:33,907 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 239 transitions. [2023-08-24 11:47:33,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 239 transitions. [2023-08-24 11:47:33,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:47:33,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 239 transitions. [2023-08-24 11:47:33,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 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) [2023-08-24 11:47:33,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 145.0) internal successors, (580), 4 states have internal predecessors, (580), 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) [2023-08-24 11:47:33,912 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 145.0) internal successors, (580), 4 states have internal predecessors, (580), 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) [2023-08-24 11:47:33,912 INFO L175 Difference]: Start difference. First operand has 27 places, 20 transitions, 66 flow. Second operand 3 states and 239 transitions. [2023-08-24 11:47:33,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 25 transitions, 124 flow [2023-08-24 11:47:33,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 25 transitions, 120 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 11:47:33,914 INFO L231 Difference]: Finished difference. Result has 29 places, 20 transitions, 73 flow [2023-08-24 11:47:33,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=29, PETRI_TRANSITIONS=20} [2023-08-24 11:47:33,915 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 2 predicate places. [2023-08-24 11:47:33,916 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 20 transitions, 73 flow [2023-08-24 11:47:33,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.25) internal successors, (301), 4 states have internal predecessors, (301), 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) [2023-08-24 11:47:33,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:47:33,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:47:33,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 11:47:33,923 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 11:47:33,923 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:47:33,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1821089988, now seen corresponding path program 1 times [2023-08-24 11:47:33,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:47:33,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556926383] [2023-08-24 11:47:33,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:47:33,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:47:33,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:47:34,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:47:34,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:47:34,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556926383] [2023-08-24 11:47:34,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556926383] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:47:34,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:47:34,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 11:47:34,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240611460] [2023-08-24 11:47:34,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:47:34,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 11:47:34,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:47:34,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 11:47:34,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-24 11:47:34,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 145 [2023-08-24 11:47:34,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 20 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 75.25) internal successors, (301), 4 states have internal predecessors, (301), 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) [2023-08-24 11:47:34,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:47:34,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 145 [2023-08-24 11:47:34,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:47:34,142 INFO L124 PetriNetUnfolderBase]: 130/254 cut-off events. [2023-08-24 11:47:34,142 INFO L125 PetriNetUnfolderBase]: For 94/94 co-relation queries the response was YES. [2023-08-24 11:47:34,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 640 conditions, 254 events. 130/254 cut-off events. For 94/94 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1052 event pairs, 72 based on Foata normal form. 6/258 useless extension candidates. Maximal degree in co-relation 627. Up to 175 conditions per place. [2023-08-24 11:47:34,144 INFO L140 encePairwiseOnDemand]: 142/145 looper letters, 23 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2023-08-24 11:47:34,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 29 transitions, 154 flow [2023-08-24 11:47:34,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 11:47:34,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 11:47:34,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 243 transitions. [2023-08-24 11:47:34,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5586206896551724 [2023-08-24 11:47:34,146 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 243 transitions. [2023-08-24 11:47:34,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 243 transitions. [2023-08-24 11:47:34,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:47:34,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 243 transitions. [2023-08-24 11:47:34,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 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) [2023-08-24 11:47:34,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 145.0) internal successors, (580), 4 states have internal predecessors, (580), 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) [2023-08-24 11:47:34,149 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 145.0) internal successors, (580), 4 states have internal predecessors, (580), 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) [2023-08-24 11:47:34,149 INFO L175 Difference]: Start difference. First operand has 29 places, 20 transitions, 73 flow. Second operand 3 states and 243 transitions. [2023-08-24 11:47:34,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 29 transitions, 154 flow [2023-08-24 11:47:34,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 29 transitions, 146 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 11:47:34,151 INFO L231 Difference]: Finished difference. Result has 30 places, 20 transitions, 78 flow [2023-08-24 11:47:34,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=30, PETRI_TRANSITIONS=20} [2023-08-24 11:47:34,152 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 3 predicate places. [2023-08-24 11:47:34,152 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 20 transitions, 78 flow [2023-08-24 11:47:34,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.25) internal successors, (301), 4 states have internal predecessors, (301), 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) [2023-08-24 11:47:34,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:47:34,152 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:47:34,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 11:47:34,153 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 11:47:34,153 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:47:34,153 INFO L85 PathProgramCache]: Analyzing trace with hash -619216323, now seen corresponding path program 1 times [2023-08-24 11:47:34,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:47:34,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678557021] [2023-08-24 11:47:34,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:47:34,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:47:34,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:47:34,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:47:34,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:47:34,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678557021] [2023-08-24 11:47:34,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678557021] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:47:34,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:47:34,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 11:47:34,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225507449] [2023-08-24 11:47:34,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:47:34,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 11:47:34,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:47:34,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 11:47:34,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-24 11:47:34,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 145 [2023-08-24 11:47:34,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 20 transitions, 78 flow. Second operand has 4 states, 4 states have (on average 75.5) internal successors, (302), 4 states have internal predecessors, (302), 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) [2023-08-24 11:47:34,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:47:34,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 145 [2023-08-24 11:47:34,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:47:34,303 INFO L124 PetriNetUnfolderBase]: 122/240 cut-off events. [2023-08-24 11:47:34,303 INFO L125 PetriNetUnfolderBase]: For 133/133 co-relation queries the response was YES. [2023-08-24 11:47:34,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 645 conditions, 240 events. 122/240 cut-off events. For 133/133 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1003 event pairs, 28 based on Foata normal form. 4/242 useless extension candidates. Maximal degree in co-relation 631. Up to 155 conditions per place. [2023-08-24 11:47:34,305 INFO L140 encePairwiseOnDemand]: 142/145 looper letters, 21 selfloop transitions, 3 changer transitions 0/27 dead transitions. [2023-08-24 11:47:34,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 27 transitions, 150 flow [2023-08-24 11:47:34,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 11:47:34,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 11:47:34,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 241 transitions. [2023-08-24 11:47:34,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5540229885057472 [2023-08-24 11:47:34,307 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 241 transitions. [2023-08-24 11:47:34,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 241 transitions. [2023-08-24 11:47:34,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:47:34,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 241 transitions. [2023-08-24 11:47:34,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 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) [2023-08-24 11:47:34,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 145.0) internal successors, (580), 4 states have internal predecessors, (580), 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) [2023-08-24 11:47:34,309 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 145.0) internal successors, (580), 4 states have internal predecessors, (580), 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) [2023-08-24 11:47:34,310 INFO L175 Difference]: Start difference. First operand has 30 places, 20 transitions, 78 flow. Second operand 3 states and 241 transitions. [2023-08-24 11:47:34,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 27 transitions, 150 flow [2023-08-24 11:47:34,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 27 transitions, 142 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 11:47:34,311 INFO L231 Difference]: Finished difference. Result has 31 places, 20 transitions, 83 flow [2023-08-24 11:47:34,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=83, PETRI_PLACES=31, PETRI_TRANSITIONS=20} [2023-08-24 11:47:34,312 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 4 predicate places. [2023-08-24 11:47:34,312 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 20 transitions, 83 flow [2023-08-24 11:47:34,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.5) internal successors, (302), 4 states have internal predecessors, (302), 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) [2023-08-24 11:47:34,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:47:34,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:47:34,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 11:47:34,313 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 11:47:34,314 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:47:34,314 INFO L85 PathProgramCache]: Analyzing trace with hash 2077357822, now seen corresponding path program 1 times [2023-08-24 11:47:34,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:47:34,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201356363] [2023-08-24 11:47:34,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:47:34,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:47:34,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:47:34,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:47:34,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:47:34,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201356363] [2023-08-24 11:47:34,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201356363] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:47:34,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:47:34,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 11:47:34,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436651346] [2023-08-24 11:47:34,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:47:34,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 11:47:34,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:47:34,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 11:47:34,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 11:47:34,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 145 [2023-08-24 11:47:34,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 20 transitions, 83 flow. Second operand has 4 states, 4 states have (on average 73.75) internal successors, (295), 4 states have internal predecessors, (295), 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) [2023-08-24 11:47:34,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:47:34,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 145 [2023-08-24 11:47:34,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:47:34,530 INFO L124 PetriNetUnfolderBase]: 249/445 cut-off events. [2023-08-24 11:47:34,530 INFO L125 PetriNetUnfolderBase]: For 343/343 co-relation queries the response was YES. [2023-08-24 11:47:34,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1206 conditions, 445 events. 249/445 cut-off events. For 343/343 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2146 event pairs, 36 based on Foata normal form. 12/455 useless extension candidates. Maximal degree in co-relation 1191. Up to 175 conditions per place. [2023-08-24 11:47:34,534 INFO L140 encePairwiseOnDemand]: 139/145 looper letters, 35 selfloop transitions, 9 changer transitions 1/47 dead transitions. [2023-08-24 11:47:34,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 47 transitions, 262 flow [2023-08-24 11:47:34,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 11:47:34,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 11:47:34,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 400 transitions. [2023-08-24 11:47:34,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5517241379310345 [2023-08-24 11:47:34,537 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 400 transitions. [2023-08-24 11:47:34,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 400 transitions. [2023-08-24 11:47:34,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:47:34,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 400 transitions. [2023-08-24 11:47:34,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 80.0) internal successors, (400), 5 states have internal predecessors, (400), 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) [2023-08-24 11:47:34,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 145.0) internal successors, (870), 6 states have internal predecessors, (870), 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) [2023-08-24 11:47:34,540 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 145.0) internal successors, (870), 6 states have internal predecessors, (870), 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) [2023-08-24 11:47:34,540 INFO L175 Difference]: Start difference. First operand has 31 places, 20 transitions, 83 flow. Second operand 5 states and 400 transitions. [2023-08-24 11:47:34,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 47 transitions, 262 flow [2023-08-24 11:47:34,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 47 transitions, 254 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 11:47:34,543 INFO L231 Difference]: Finished difference. Result has 36 places, 25 transitions, 144 flow [2023-08-24 11:47:34,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=144, PETRI_PLACES=36, PETRI_TRANSITIONS=25} [2023-08-24 11:47:34,545 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2023-08-24 11:47:34,546 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 25 transitions, 144 flow [2023-08-24 11:47:34,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.75) internal successors, (295), 4 states have internal predecessors, (295), 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) [2023-08-24 11:47:34,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:47:34,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:47:34,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 11:47:34,547 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 11:47:34,547 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:47:34,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1010186728, now seen corresponding path program 2 times [2023-08-24 11:47:34,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:47:34,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618830191] [2023-08-24 11:47:34,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:47:34,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:47:34,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:47:34,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:47:34,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:47:34,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618830191] [2023-08-24 11:47:34,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618830191] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:47:34,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:47:34,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 11:47:34,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780117675] [2023-08-24 11:47:34,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:47:34,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 11:47:34,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:47:34,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 11:47:34,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-24 11:47:34,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 145 [2023-08-24 11:47:34,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 25 transitions, 144 flow. Second operand has 5 states, 5 states have (on average 73.2) internal successors, (366), 5 states have internal predecessors, (366), 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) [2023-08-24 11:47:34,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:47:34,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 145 [2023-08-24 11:47:34,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:47:34,780 INFO L124 PetriNetUnfolderBase]: 277/515 cut-off events. [2023-08-24 11:47:34,780 INFO L125 PetriNetUnfolderBase]: For 808/808 co-relation queries the response was YES. [2023-08-24 11:47:34,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1595 conditions, 515 events. 277/515 cut-off events. For 808/808 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2703 event pairs, 67 based on Foata normal form. 12/519 useless extension candidates. Maximal degree in co-relation 1577. Up to 210 conditions per place. [2023-08-24 11:47:34,783 INFO L140 encePairwiseOnDemand]: 141/145 looper letters, 27 selfloop transitions, 3 changer transitions 8/40 dead transitions. [2023-08-24 11:47:34,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 40 transitions, 270 flow [2023-08-24 11:47:34,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 11:47:34,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 11:47:34,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 317 transitions. [2023-08-24 11:47:34,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5465517241379311 [2023-08-24 11:47:34,785 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 317 transitions. [2023-08-24 11:47:34,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 317 transitions. [2023-08-24 11:47:34,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:47:34,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 317 transitions. [2023-08-24 11:47:34,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 79.25) internal successors, (317), 4 states have internal predecessors, (317), 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) [2023-08-24 11:47:34,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 145.0) internal successors, (725), 5 states have internal predecessors, (725), 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) [2023-08-24 11:47:34,788 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 145.0) internal successors, (725), 5 states have internal predecessors, (725), 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) [2023-08-24 11:47:34,788 INFO L175 Difference]: Start difference. First operand has 36 places, 25 transitions, 144 flow. Second operand 4 states and 317 transitions. [2023-08-24 11:47:34,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 40 transitions, 270 flow [2023-08-24 11:47:34,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 40 transitions, 265 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-24 11:47:34,792 INFO L231 Difference]: Finished difference. Result has 40 places, 19 transitions, 110 flow [2023-08-24 11:47:34,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=110, PETRI_PLACES=40, PETRI_TRANSITIONS=19} [2023-08-24 11:47:34,792 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 13 predicate places. [2023-08-24 11:47:34,793 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 19 transitions, 110 flow [2023-08-24 11:47:34,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.2) internal successors, (366), 5 states have internal predecessors, (366), 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) [2023-08-24 11:47:34,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:47:34,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:47:34,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 11:47:34,793 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 11:47:34,794 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:47:34,794 INFO L85 PathProgramCache]: Analyzing trace with hash -26451578, now seen corresponding path program 1 times [2023-08-24 11:47:34,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:47:34,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574013095] [2023-08-24 11:47:34,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:47:34,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:47:34,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:47:34,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:47:34,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:47:34,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574013095] [2023-08-24 11:47:34,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574013095] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:47:34,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:47:34,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 11:47:34,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719978692] [2023-08-24 11:47:34,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:47:34,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 11:47:34,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:47:34,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 11:47:34,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-24 11:47:34,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 145 [2023-08-24 11:47:34,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 19 transitions, 110 flow. Second operand has 5 states, 5 states have (on average 73.2) internal successors, (366), 5 states have internal predecessors, (366), 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) [2023-08-24 11:47:34,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:47:34,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 145 [2023-08-24 11:47:34,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:47:34,942 INFO L124 PetriNetUnfolderBase]: 139/262 cut-off events. [2023-08-24 11:47:34,942 INFO L125 PetriNetUnfolderBase]: For 837/838 co-relation queries the response was YES. [2023-08-24 11:47:34,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 867 conditions, 262 events. 139/262 cut-off events. For 837/838 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1020 event pairs, 67 based on Foata normal form. 12/271 useless extension candidates. Maximal degree in co-relation 846. Up to 102 conditions per place. [2023-08-24 11:47:34,943 INFO L140 encePairwiseOnDemand]: 141/145 looper letters, 15 selfloop transitions, 3 changer transitions 9/29 dead transitions. [2023-08-24 11:47:34,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 29 transitions, 205 flow [2023-08-24 11:47:34,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 11:47:34,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 11:47:34,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 311 transitions. [2023-08-24 11:47:34,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5362068965517242 [2023-08-24 11:47:34,945 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 311 transitions. [2023-08-24 11:47:34,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 311 transitions. [2023-08-24 11:47:34,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:47:34,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 311 transitions. [2023-08-24 11:47:34,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 77.75) internal successors, (311), 4 states have internal predecessors, (311), 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) [2023-08-24 11:47:34,947 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 145.0) internal successors, (725), 5 states have internal predecessors, (725), 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) [2023-08-24 11:47:34,947 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 145.0) internal successors, (725), 5 states have internal predecessors, (725), 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) [2023-08-24 11:47:34,948 INFO L175 Difference]: Start difference. First operand has 40 places, 19 transitions, 110 flow. Second operand 4 states and 311 transitions. [2023-08-24 11:47:34,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 29 transitions, 205 flow [2023-08-24 11:47:34,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 29 transitions, 153 flow, removed 12 selfloop flow, removed 10 redundant places. [2023-08-24 11:47:34,950 INFO L231 Difference]: Finished difference. Result has 34 places, 17 transitions, 74 flow [2023-08-24 11:47:34,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=74, PETRI_PLACES=34, PETRI_TRANSITIONS=17} [2023-08-24 11:47:34,951 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2023-08-24 11:47:34,951 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 17 transitions, 74 flow [2023-08-24 11:47:34,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.2) internal successors, (366), 5 states have internal predecessors, (366), 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) [2023-08-24 11:47:34,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:47:34,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:47:34,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-24 11:47:34,952 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 11:47:34,952 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:47:34,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1910773794, now seen corresponding path program 1 times [2023-08-24 11:47:34,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:47:34,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873115089] [2023-08-24 11:47:34,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:47:34,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:47:34,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:47:35,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:47:35,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:47:35,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873115089] [2023-08-24 11:47:35,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873115089] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:47:35,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:47:35,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 11:47:35,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745920670] [2023-08-24 11:47:35,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:47:35,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 11:47:35,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:47:35,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 11:47:35,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-24 11:47:35,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 145 [2023-08-24 11:47:35,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 17 transitions, 74 flow. Second operand has 5 states, 5 states have (on average 73.2) internal successors, (366), 5 states have internal predecessors, (366), 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) [2023-08-24 11:47:35,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:47:35,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 145 [2023-08-24 11:47:35,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:47:35,071 INFO L124 PetriNetUnfolderBase]: 46/93 cut-off events. [2023-08-24 11:47:35,071 INFO L125 PetriNetUnfolderBase]: For 204/204 co-relation queries the response was YES. [2023-08-24 11:47:35,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 235 conditions, 93 events. 46/93 cut-off events. For 204/204 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 214 event pairs, 22 based on Foata normal form. 12/101 useless extension candidates. Maximal degree in co-relation 219. Up to 49 conditions per place. [2023-08-24 11:47:35,072 INFO L140 encePairwiseOnDemand]: 142/145 looper letters, 0 selfloop transitions, 0 changer transitions 19/19 dead transitions. [2023-08-24 11:47:35,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 19 transitions, 102 flow [2023-08-24 11:47:35,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 11:47:35,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 11:47:35,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 303 transitions. [2023-08-24 11:47:35,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5224137931034483 [2023-08-24 11:47:35,073 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 303 transitions. [2023-08-24 11:47:35,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 303 transitions. [2023-08-24 11:47:35,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:47:35,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 303 transitions. [2023-08-24 11:47:35,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 75.75) internal successors, (303), 4 states have internal predecessors, (303), 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) [2023-08-24 11:47:35,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 145.0) internal successors, (725), 5 states have internal predecessors, (725), 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) [2023-08-24 11:47:35,076 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 145.0) internal successors, (725), 5 states have internal predecessors, (725), 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) [2023-08-24 11:47:35,076 INFO L175 Difference]: Start difference. First operand has 34 places, 17 transitions, 74 flow. Second operand 4 states and 303 transitions. [2023-08-24 11:47:35,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 19 transitions, 102 flow [2023-08-24 11:47:35,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 19 transitions, 78 flow, removed 2 selfloop flow, removed 10 redundant places. [2023-08-24 11:47:35,076 INFO L231 Difference]: Finished difference. Result has 26 places, 0 transitions, 0 flow [2023-08-24 11:47:35,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=26, PETRI_TRANSITIONS=0} [2023-08-24 11:47:35,077 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -1 predicate places. [2023-08-24 11:47:35,077 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 0 transitions, 0 flow [2023-08-24 11:47:35,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.2) internal successors, (366), 5 states have internal predecessors, (366), 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) [2023-08-24 11:47:35,080 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-24 11:47:35,080 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-24 11:47:35,080 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-24 11:47:35,081 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-24 11:47:35,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-24 11:47:35,081 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2023-08-24 11:47:35,084 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 11:47:35,084 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 11:47:35,086 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 11:47:35 BasicIcfg [2023-08-24 11:47:35,086 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 11:47:35,087 INFO L158 Benchmark]: Toolchain (without parser) took 5488.91ms. Allocated memory was 379.6MB in the beginning and 457.2MB in the end (delta: 77.6MB). Free memory was 337.5MB in the beginning and 200.8MB in the end (delta: 136.8MB). Peak memory consumption was 216.5MB. Max. memory is 16.0GB. [2023-08-24 11:47:35,087 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 379.6MB. Free memory is still 356.6MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 11:47:35,087 INFO L158 Benchmark]: CACSL2BoogieTranslator took 506.36ms. Allocated memory is still 379.6MB. Free memory was 337.5MB in the beginning and 317.2MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-24 11:47:35,088 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.80ms. Allocated memory is still 379.6MB. Free memory was 317.2MB in the beginning and 315.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 11:47:35,088 INFO L158 Benchmark]: Boogie Preprocessor took 35.18ms. Allocated memory is still 379.6MB. Free memory was 315.1MB in the beginning and 313.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 11:47:35,088 INFO L158 Benchmark]: RCFGBuilder took 446.33ms. Allocated memory is still 379.6MB. Free memory was 313.4MB in the beginning and 345.4MB in the end (delta: -32.0MB). Peak memory consumption was 9.2MB. Max. memory is 16.0GB. [2023-08-24 11:47:35,089 INFO L158 Benchmark]: TraceAbstraction took 4438.68ms. Allocated memory was 379.6MB in the beginning and 457.2MB in the end (delta: 77.6MB). Free memory was 344.6MB in the beginning and 200.8MB in the end (delta: 143.9MB). Peak memory consumption was 222.0MB. Max. memory is 16.0GB. [2023-08-24 11:47:35,090 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 379.6MB. Free memory is still 356.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 506.36ms. Allocated memory is still 379.6MB. Free memory was 337.5MB in the beginning and 317.2MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 56.80ms. Allocated memory is still 379.6MB. Free memory was 317.2MB in the beginning and 315.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 35.18ms. Allocated memory is still 379.6MB. Free memory was 315.1MB in the beginning and 313.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 446.33ms. Allocated memory is still 379.6MB. Free memory was 313.4MB in the beginning and 345.4MB in the end (delta: -32.0MB). Peak memory consumption was 9.2MB. Max. memory is 16.0GB. * TraceAbstraction took 4438.68ms. Allocated memory was 379.6MB in the beginning and 457.2MB in the end (delta: 77.6MB). Free memory was 344.6MB in the beginning and 200.8MB in the end (delta: 143.9MB). Peak memory consumption was 222.0MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.1s, 80 PlacesBefore, 27 PlacesAfterwards, 71 TransitionsBefore, 18 TransitionsAfterwards, 1044 CoEnabledTransitionPairs, 5 FixpointIterations, 21 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 0 ChoiceCompositions, 59 TotalNumberOfCompositions, 1982 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1253, independent: 1172, independent conditional: 0, independent unconditional: 1172, dependent: 81, dependent conditional: 0, dependent unconditional: 81, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 574, independent: 554, independent conditional: 0, independent unconditional: 554, dependent: 20, dependent conditional: 0, dependent unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1253, independent: 618, independent conditional: 0, independent unconditional: 618, dependent: 61, dependent conditional: 0, dependent unconditional: 61, unknown: 574, unknown conditional: 0, unknown unconditional: 574] , Statistics on independence cache: Total cache size (in pairs): 58, Positive cache size: 51, Positive conditional cache size: 0, Positive unconditional cache size: 51, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 109 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.3s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 103 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 103 mSDsluCounter, 6 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 262 IncrementalHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 5 mSDtfsCounter, 262 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=144occurred in iteration=5, InterpolantAutomatonStates: 29, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 83 NumberOfCodeBlocks, 83 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 75 ConstructedInterpolants, 0 QuantifiedInterpolants, 365 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-24 11:47:35,111 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...