/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/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 11:45:40,191 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 11:45:40,234 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 11:45:40,237 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 11:45:40,237 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 11:45:40,256 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 11:45:40,257 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 11:45:40,257 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 11:45:40,257 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 11:45:40,258 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 11:45:40,258 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 11:45:40,258 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 11:45:40,258 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 11:45:40,259 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 11:45:40,259 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 11:45:40,259 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 11:45:40,259 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 11:45:40,260 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 11:45:40,260 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 11:45:40,260 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 11:45:40,260 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 11:45:40,264 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 11:45:40,264 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 11:45:40,264 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 11:45:40,265 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 11:45:40,265 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 11:45:40,265 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 11:45:40,265 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 11:45:40,265 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 11:45:40,266 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 11:45:40,266 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 11:45:40,266 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 11:45:40,266 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 11:45:40,266 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 11:45:40,267 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 11:45:40,267 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-24 11:45:40,497 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 11:45:40,518 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 11:45:40,519 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 11:45:40,520 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 11:45:40,521 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 11:45:40,522 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2023-08-24 11:45:41,447 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 11:45:41,643 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 11:45:41,643 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2023-08-24 11:45:41,662 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58c812e98/02ae7efe3fd0423ead5974b102d4df69/FLAG9e60fcfbc [2023-08-24 11:45:41,671 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58c812e98/02ae7efe3fd0423ead5974b102d4df69 [2023-08-24 11:45:41,672 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 11:45:41,673 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 11:45:41,674 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 11:45:41,674 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 11:45:41,682 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 11:45:41,683 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 11:45:41" (1/1) ... [2023-08-24 11:45:41,683 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46ce15ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:45:41, skipping insertion in model container [2023-08-24 11:45:41,684 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 11:45:41" (1/1) ... [2023-08-24 11:45:41,725 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 11:45:41,814 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/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[1038,1051] [2023-08-24 11:45:41,979 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 11:45:41,989 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 11:45:41,997 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/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[1038,1051] [2023-08-24 11:45:42,009 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [268] [2023-08-24 11:45:42,011 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [268] [2023-08-24 11:45:42,047 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 11:45:42,078 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 11:45:42,078 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 11:45:42,083 INFO L206 MainTranslator]: Completed translation [2023-08-24 11:45:42,084 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:45:42 WrapperNode [2023-08-24 11:45:42,084 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 11:45:42,085 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 11:45:42,085 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 11:45:42,085 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 11:45:42,090 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:45:42" (1/1) ... [2023-08-24 11:45:42,114 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:45:42" (1/1) ... [2023-08-24 11:45:42,142 INFO L138 Inliner]: procedures = 175, calls = 47, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 154 [2023-08-24 11:45:42,142 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 11:45:42,143 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 11:45:42,143 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 11:45:42,143 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 11:45:42,149 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:45:42" (1/1) ... [2023-08-24 11:45:42,149 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:45:42" (1/1) ... [2023-08-24 11:45:42,162 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:45:42" (1/1) ... [2023-08-24 11:45:42,162 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:45:42" (1/1) ... [2023-08-24 11:45:42,170 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:45:42" (1/1) ... [2023-08-24 11:45:42,171 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:45:42" (1/1) ... [2023-08-24 11:45:42,172 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:45:42" (1/1) ... [2023-08-24 11:45:42,173 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:45:42" (1/1) ... [2023-08-24 11:45:42,176 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 11:45:42,192 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 11:45:42,192 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 11:45:42,192 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 11:45:42,193 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:45:42" (1/1) ... [2023-08-24 11:45:42,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 11:45:42,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 11:45:42,216 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 11:45:42,234 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 11:45:42,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 11:45:42,246 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-24 11:45:42,246 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 11:45:42,246 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 11:45:42,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 11:45:42,247 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-24 11:45:42,247 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-24 11:45:42,247 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-24 11:45:42,247 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-24 11:45:42,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 11:45:42,247 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-24 11:45:42,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 11:45:42,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 11:45:42,249 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 11:45:42,348 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 11:45:42,349 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 11:45:42,565 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 11:45:42,653 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 11:45:42,653 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-24 11:45:42,655 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 11:45:42 BoogieIcfgContainer [2023-08-24 11:45:42,655 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 11:45:42,657 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 11:45:42,658 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 11:45:42,660 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 11:45:42,660 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 11:45:41" (1/3) ... [2023-08-24 11:45:42,660 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3626550c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 11:45:42, skipping insertion in model container [2023-08-24 11:45:42,660 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:45:42" (2/3) ... [2023-08-24 11:45:42,660 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3626550c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 11:45:42, skipping insertion in model container [2023-08-24 11:45:42,661 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 11:45:42" (3/3) ... [2023-08-24 11:45:42,661 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2023-08-24 11:45:42,672 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 11:45:42,673 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-24 11:45:42,673 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 11:45:42,757 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 11:45:42,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 92 transitions, 194 flow [2023-08-24 11:45:42,810 INFO L124 PetriNetUnfolderBase]: 2/90 cut-off events. [2023-08-24 11:45:42,810 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 11:45:42,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 90 events. 2/90 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2023-08-24 11:45:42,814 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 92 transitions, 194 flow [2023-08-24 11:45:42,817 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 95 places, 90 transitions, 186 flow [2023-08-24 11:45:42,820 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 11:45:42,829 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 95 places, 90 transitions, 186 flow [2023-08-24 11:45:42,835 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 95 places, 90 transitions, 186 flow [2023-08-24 11:45:42,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 90 transitions, 186 flow [2023-08-24 11:45:42,850 INFO L124 PetriNetUnfolderBase]: 2/90 cut-off events. [2023-08-24 11:45:42,850 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 11:45:42,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 90 events. 2/90 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2023-08-24 11:45:42,851 INFO L119 LiptonReduction]: Number of co-enabled transitions 1244 [2023-08-24 11:45:45,972 INFO L134 LiptonReduction]: Checked pairs total: 3453 [2023-08-24 11:45:45,973 INFO L136 LiptonReduction]: Total number of compositions: 81 [2023-08-24 11:45:45,981 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 11:45:45,985 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;@304bbb2d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 11:45:45,985 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-24 11:45:45,988 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 11:45:45,988 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2023-08-24 11:45:45,988 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 11:45:45,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:45:45,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-24 11:45:45,989 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 11:45:45,992 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:45:45,992 INFO L85 PathProgramCache]: Analyzing trace with hash 469001348, now seen corresponding path program 1 times [2023-08-24 11:45:45,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:45:45,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060731884] [2023-08-24 11:45:45,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:45:46,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:45:46,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:45:46,319 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 11:45:46,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:45:46,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060731884] [2023-08-24 11:45:46,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060731884] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:45:46,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:45:46,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 11:45:46,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332368852] [2023-08-24 11:45:46,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:45:46,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 11:45:46,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:45:46,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 11:45:46,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 11:45:46,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 173 [2023-08-24 11:45:46,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 19 transitions, 44 flow. Second operand has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 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 11:45:46,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:45:46,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 173 [2023-08-24 11:45:46,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:45:46,513 INFO L124 PetriNetUnfolderBase]: 275/468 cut-off events. [2023-08-24 11:45:46,513 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-08-24 11:45:46,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 954 conditions, 468 events. 275/468 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1808 event pairs, 30 based on Foata normal form. 0/432 useless extension candidates. Maximal degree in co-relation 944. Up to 396 conditions per place. [2023-08-24 11:45:46,518 INFO L140 encePairwiseOnDemand]: 170/173 looper letters, 23 selfloop transitions, 2 changer transitions 2/27 dead transitions. [2023-08-24 11:45:46,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 27 transitions, 114 flow [2023-08-24 11:45:46,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 11:45:46,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 11:45:46,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 259 transitions. [2023-08-24 11:45:46,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49903660886319845 [2023-08-24 11:45:46,533 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 259 transitions. [2023-08-24 11:45:46,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 259 transitions. [2023-08-24 11:45:46,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:45:46,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 259 transitions. [2023-08-24 11:45:46,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 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 11:45:46,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 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 11:45:46,544 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 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 11:45:46,545 INFO L175 Difference]: Start difference. First operand has 26 places, 19 transitions, 44 flow. Second operand 3 states and 259 transitions. [2023-08-24 11:45:46,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 27 transitions, 114 flow [2023-08-24 11:45:46,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 27 transitions, 112 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 11:45:46,574 INFO L231 Difference]: Finished difference. Result has 25 places, 17 transitions, 42 flow [2023-08-24 11:45:46,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=42, PETRI_PLACES=25, PETRI_TRANSITIONS=17} [2023-08-24 11:45:46,579 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, -1 predicate places. [2023-08-24 11:45:46,579 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 17 transitions, 42 flow [2023-08-24 11:45:46,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 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 11:45:46,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:45:46,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:45:46,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 11:45:46,580 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 11:45:46,581 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:45:46,581 INFO L85 PathProgramCache]: Analyzing trace with hash -261224281, now seen corresponding path program 1 times [2023-08-24 11:45:46,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:45:46,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004711276] [2023-08-24 11:45:46,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:45:46,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:45:46,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:45:46,757 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 11:45:46,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:45:46,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004711276] [2023-08-24 11:45:46,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004711276] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:45:46,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:45:46,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 11:45:46,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012644602] [2023-08-24 11:45:46,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:45:46,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 11:45:46,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:45:46,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 11:45:46,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 11:45:46,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 173 [2023-08-24 11:45:46,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 17 transitions, 42 flow. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 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 11:45:46,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:45:46,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 173 [2023-08-24 11:45:46,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:45:46,829 INFO L124 PetriNetUnfolderBase]: 182/321 cut-off events. [2023-08-24 11:45:46,829 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-24 11:45:46,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 681 conditions, 321 events. 182/321 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1109 event pairs, 80 based on Foata normal form. 18/339 useless extension candidates. Maximal degree in co-relation 671. Up to 193 conditions per place. [2023-08-24 11:45:46,832 INFO L140 encePairwiseOnDemand]: 170/173 looper letters, 24 selfloop transitions, 2 changer transitions 0/26 dead transitions. [2023-08-24 11:45:46,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 26 transitions, 116 flow [2023-08-24 11:45:46,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 11:45:46,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 11:45:46,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 258 transitions. [2023-08-24 11:45:46,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49710982658959535 [2023-08-24 11:45:46,835 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 258 transitions. [2023-08-24 11:45:46,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 258 transitions. [2023-08-24 11:45:46,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:45:46,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 258 transitions. [2023-08-24 11:45:46,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 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 11:45:46,838 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 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 11:45:46,838 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 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 11:45:46,838 INFO L175 Difference]: Start difference. First operand has 25 places, 17 transitions, 42 flow. Second operand 3 states and 258 transitions. [2023-08-24 11:45:46,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 26 transitions, 116 flow [2023-08-24 11:45:46,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 26 transitions, 110 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 11:45:46,839 INFO L231 Difference]: Finished difference. Result has 25 places, 17 transitions, 46 flow [2023-08-24 11:45:46,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=46, PETRI_PLACES=25, PETRI_TRANSITIONS=17} [2023-08-24 11:45:46,840 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, -1 predicate places. [2023-08-24 11:45:46,840 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 17 transitions, 46 flow [2023-08-24 11:45:46,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 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 11:45:46,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:45:46,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:45:46,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 11:45:46,846 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 11:45:46,848 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:45:46,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1688167736, now seen corresponding path program 1 times [2023-08-24 11:45:46,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:45:46,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419764143] [2023-08-24 11:45:46,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:45:46,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:45:46,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:45:46,965 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 11:45:46,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:45:46,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419764143] [2023-08-24 11:45:46,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419764143] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:45:46,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:45:46,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 11:45:46,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39767427] [2023-08-24 11:45:46,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:45:46,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 11:45:46,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:45:46,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 11:45:46,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 11:45:46,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 173 [2023-08-24 11:45:46,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 17 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 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 11:45:46,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:45:46,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 173 [2023-08-24 11:45:46,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:45:47,026 INFO L124 PetriNetUnfolderBase]: 172/305 cut-off events. [2023-08-24 11:45:47,026 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2023-08-24 11:45:47,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 681 conditions, 305 events. 172/305 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1008 event pairs, 56 based on Foata normal form. 6/311 useless extension candidates. Maximal degree in co-relation 670. Up to 210 conditions per place. [2023-08-24 11:45:47,028 INFO L140 encePairwiseOnDemand]: 170/173 looper letters, 22 selfloop transitions, 2 changer transitions 0/24 dead transitions. [2023-08-24 11:45:47,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 24 transitions, 111 flow [2023-08-24 11:45:47,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 11:45:47,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 11:45:47,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 253 transitions. [2023-08-24 11:45:47,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48747591522157996 [2023-08-24 11:45:47,029 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 253 transitions. [2023-08-24 11:45:47,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 253 transitions. [2023-08-24 11:45:47,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:45:47,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 253 transitions. [2023-08-24 11:45:47,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 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 11:45:47,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 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 11:45:47,031 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 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 11:45:47,031 INFO L175 Difference]: Start difference. First operand has 25 places, 17 transitions, 46 flow. Second operand 3 states and 253 transitions. [2023-08-24 11:45:47,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 24 transitions, 111 flow [2023-08-24 11:45:47,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 24 transitions, 105 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 11:45:47,032 INFO L231 Difference]: Finished difference. Result has 26 places, 17 transitions, 50 flow [2023-08-24 11:45:47,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=26, PETRI_TRANSITIONS=17} [2023-08-24 11:45:47,032 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 0 predicate places. [2023-08-24 11:45:47,032 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 17 transitions, 50 flow [2023-08-24 11:45:47,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 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 11:45:47,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:45:47,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:45:47,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 11:45:47,033 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 11:45:47,033 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:45:47,033 INFO L85 PathProgramCache]: Analyzing trace with hash -2112271550, now seen corresponding path program 1 times [2023-08-24 11:45:47,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:45:47,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311766812] [2023-08-24 11:45:47,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:45:47,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:45:47,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:45:47,530 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 11:45:47,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:45:47,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311766812] [2023-08-24 11:45:47,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311766812] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:45:47,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:45:47,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 11:45:47,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318001265] [2023-08-24 11:45:47,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:45:47,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 11:45:47,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:45:47,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 11:45:47,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-24 11:45:47,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 173 [2023-08-24 11:45:47,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 17 transitions, 50 flow. Second operand has 5 states, 5 states have (on average 74.4) internal successors, (372), 5 states have internal predecessors, (372), 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 11:45:47,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:45:47,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 173 [2023-08-24 11:45:47,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:45:47,662 INFO L124 PetriNetUnfolderBase]: 218/386 cut-off events. [2023-08-24 11:45:47,662 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-24 11:45:47,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 894 conditions, 386 events. 218/386 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1449 event pairs, 27 based on Foata normal form. 6/392 useless extension candidates. Maximal degree in co-relation 882. Up to 215 conditions per place. [2023-08-24 11:45:47,664 INFO L140 encePairwiseOnDemand]: 164/173 looper letters, 27 selfloop transitions, 8 changer transitions 0/35 dead transitions. [2023-08-24 11:45:47,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 35 transitions, 161 flow [2023-08-24 11:45:47,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 11:45:47,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 11:45:47,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 396 transitions. [2023-08-24 11:45:47,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4578034682080925 [2023-08-24 11:45:47,666 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 396 transitions. [2023-08-24 11:45:47,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 396 transitions. [2023-08-24 11:45:47,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:45:47,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 396 transitions. [2023-08-24 11:45:47,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 79.2) internal successors, (396), 5 states have internal predecessors, (396), 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 11:45:47,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 173.0) internal successors, (1038), 6 states have internal predecessors, (1038), 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 11:45:47,668 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 173.0) internal successors, (1038), 6 states have internal predecessors, (1038), 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 11:45:47,669 INFO L175 Difference]: Start difference. First operand has 26 places, 17 transitions, 50 flow. Second operand 5 states and 396 transitions. [2023-08-24 11:45:47,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 35 transitions, 161 flow [2023-08-24 11:45:47,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 35 transitions, 155 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 11:45:47,670 INFO L231 Difference]: Finished difference. Result has 30 places, 23 transitions, 102 flow [2023-08-24 11:45:47,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=102, PETRI_PLACES=30, PETRI_TRANSITIONS=23} [2023-08-24 11:45:47,671 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 4 predicate places. [2023-08-24 11:45:47,671 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 23 transitions, 102 flow [2023-08-24 11:45:47,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.4) internal successors, (372), 5 states have internal predecessors, (372), 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 11:45:47,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:45:47,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:45:47,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 11:45:47,672 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 11:45:47,672 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:45:47,672 INFO L85 PathProgramCache]: Analyzing trace with hash -145192871, now seen corresponding path program 1 times [2023-08-24 11:45:47,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:45:47,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186832350] [2023-08-24 11:45:47,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:45:47,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:45:47,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:45:47,978 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 11:45:47,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:45:47,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186832350] [2023-08-24 11:45:47,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186832350] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:45:47,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:45:47,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 11:45:47,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314196711] [2023-08-24 11:45:47,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:45:47,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 11:45:47,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:45:47,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 11:45:47,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 11:45:47,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 173 [2023-08-24 11:45:47,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 77.25) internal successors, (309), 4 states have internal predecessors, (309), 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 11:45:47,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:45:47,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 173 [2023-08-24 11:45:47,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:45:48,105 INFO L124 PetriNetUnfolderBase]: 293/531 cut-off events. [2023-08-24 11:45:48,106 INFO L125 PetriNetUnfolderBase]: For 332/332 co-relation queries the response was YES. [2023-08-24 11:45:48,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1566 conditions, 531 events. 293/531 cut-off events. For 332/332 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2265 event pairs, 93 based on Foata normal form. 9/540 useless extension candidates. Maximal degree in co-relation 1552. Up to 295 conditions per place. [2023-08-24 11:45:48,108 INFO L140 encePairwiseOnDemand]: 166/173 looper letters, 26 selfloop transitions, 5 changer transitions 13/44 dead transitions. [2023-08-24 11:45:48,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 44 transitions, 277 flow [2023-08-24 11:45:48,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 11:45:48,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 11:45:48,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 332 transitions. [2023-08-24 11:45:48,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4797687861271676 [2023-08-24 11:45:48,109 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 332 transitions. [2023-08-24 11:45:48,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 332 transitions. [2023-08-24 11:45:48,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:45:48,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 332 transitions. [2023-08-24 11:45:48,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 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 11:45:48,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 173.0) internal successors, (865), 5 states have internal predecessors, (865), 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 11:45:48,112 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 173.0) internal successors, (865), 5 states have internal predecessors, (865), 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 11:45:48,112 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 102 flow. Second operand 4 states and 332 transitions. [2023-08-24 11:45:48,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 44 transitions, 277 flow [2023-08-24 11:45:48,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 44 transitions, 274 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 11:45:48,114 INFO L231 Difference]: Finished difference. Result has 33 places, 27 transitions, 145 flow [2023-08-24 11:45:48,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=145, PETRI_PLACES=33, PETRI_TRANSITIONS=27} [2023-08-24 11:45:48,116 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 7 predicate places. [2023-08-24 11:45:48,116 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 27 transitions, 145 flow [2023-08-24 11:45:48,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.25) internal successors, (309), 4 states have internal predecessors, (309), 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 11:45:48,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:45:48,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:45:48,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 11:45:48,117 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 11:45:48,117 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:45:48,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1692010530, now seen corresponding path program 1 times [2023-08-24 11:45:48,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:45:48,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309505529] [2023-08-24 11:45:48,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:45:48,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:45:48,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:45:49,270 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 11:45:49,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:45:49,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309505529] [2023-08-24 11:45:49,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309505529] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:45:49,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:45:49,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 11:45:49,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318736810] [2023-08-24 11:45:49,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:45:49,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-24 11:45:49,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:45:49,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-24 11:45:49,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-08-24 11:45:49,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 173 [2023-08-24 11:45:49,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 27 transitions, 145 flow. Second operand has 9 states, 9 states have (on average 69.44444444444444) internal successors, (625), 9 states have internal predecessors, (625), 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 11:45:49,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:45:49,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 173 [2023-08-24 11:45:49,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:45:49,491 INFO L124 PetriNetUnfolderBase]: 212/402 cut-off events. [2023-08-24 11:45:49,491 INFO L125 PetriNetUnfolderBase]: For 385/385 co-relation queries the response was YES. [2023-08-24 11:45:49,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1353 conditions, 402 events. 212/402 cut-off events. For 385/385 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1667 event pairs, 20 based on Foata normal form. 4/406 useless extension candidates. Maximal degree in co-relation 1338. Up to 225 conditions per place. [2023-08-24 11:45:49,493 INFO L140 encePairwiseOnDemand]: 164/173 looper letters, 38 selfloop transitions, 18 changer transitions 0/56 dead transitions. [2023-08-24 11:45:49,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 56 transitions, 388 flow [2023-08-24 11:45:49,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 11:45:49,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 11:45:49,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 526 transitions. [2023-08-24 11:45:49,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4343517753922378 [2023-08-24 11:45:49,495 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 526 transitions. [2023-08-24 11:45:49,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 526 transitions. [2023-08-24 11:45:49,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:45:49,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 526 transitions. [2023-08-24 11:45:49,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 75.14285714285714) internal successors, (526), 7 states have internal predecessors, (526), 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 11:45:49,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 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 11:45:49,497 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 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 11:45:49,497 INFO L175 Difference]: Start difference. First operand has 33 places, 27 transitions, 145 flow. Second operand 7 states and 526 transitions. [2023-08-24 11:45:49,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 56 transitions, 388 flow [2023-08-24 11:45:49,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 56 transitions, 380 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-24 11:45:49,499 INFO L231 Difference]: Finished difference. Result has 38 places, 41 transitions, 297 flow [2023-08-24 11:45:49,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=297, PETRI_PLACES=38, PETRI_TRANSITIONS=41} [2023-08-24 11:45:49,500 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 12 predicate places. [2023-08-24 11:45:49,500 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 41 transitions, 297 flow [2023-08-24 11:45:49,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 69.44444444444444) internal successors, (625), 9 states have internal predecessors, (625), 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 11:45:49,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:45:49,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:45:49,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 11:45:49,501 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 11:45:49,501 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:45:49,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1915811797, now seen corresponding path program 2 times [2023-08-24 11:45:49,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:45:49,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234763301] [2023-08-24 11:45:49,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:45:49,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:45:49,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:45:49,722 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 11:45:49,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:45:49,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234763301] [2023-08-24 11:45:49,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234763301] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:45:49,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:45:49,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 11:45:49,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172772060] [2023-08-24 11:45:49,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:45:49,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 11:45:49,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:45:49,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 11:45:49,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-24 11:45:49,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 173 [2023-08-24 11:45:49,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 41 transitions, 297 flow. Second operand has 6 states, 6 states have (on average 75.16666666666667) internal successors, (451), 6 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:45:49,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:45:49,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 173 [2023-08-24 11:45:49,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:45:49,839 INFO L124 PetriNetUnfolderBase]: 219/424 cut-off events. [2023-08-24 11:45:49,839 INFO L125 PetriNetUnfolderBase]: For 769/769 co-relation queries the response was YES. [2023-08-24 11:45:49,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1634 conditions, 424 events. 219/424 cut-off events. For 769/769 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1797 event pairs, 97 based on Foata normal form. 9/433 useless extension candidates. Maximal degree in co-relation 1617. Up to 297 conditions per place. [2023-08-24 11:45:49,841 INFO L140 encePairwiseOnDemand]: 166/173 looper letters, 29 selfloop transitions, 10 changer transitions 13/52 dead transitions. [2023-08-24 11:45:49,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 52 transitions, 449 flow [2023-08-24 11:45:49,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 11:45:49,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 11:45:49,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 399 transitions. [2023-08-24 11:45:49,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.461271676300578 [2023-08-24 11:45:49,842 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 399 transitions. [2023-08-24 11:45:49,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 399 transitions. [2023-08-24 11:45:49,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:45:49,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 399 transitions. [2023-08-24 11:45:49,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 79.8) internal successors, (399), 5 states have internal predecessors, (399), 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 11:45:49,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 173.0) internal successors, (1038), 6 states have internal predecessors, (1038), 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 11:45:49,844 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 173.0) internal successors, (1038), 6 states have internal predecessors, (1038), 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 11:45:49,845 INFO L175 Difference]: Start difference. First operand has 38 places, 41 transitions, 297 flow. Second operand 5 states and 399 transitions. [2023-08-24 11:45:49,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 52 transitions, 449 flow [2023-08-24 11:45:49,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 52 transitions, 435 flow, removed 7 selfloop flow, removed 0 redundant places. [2023-08-24 11:45:49,849 INFO L231 Difference]: Finished difference. Result has 43 places, 37 transitions, 272 flow [2023-08-24 11:45:49,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=272, PETRI_PLACES=43, PETRI_TRANSITIONS=37} [2023-08-24 11:45:49,849 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 17 predicate places. [2023-08-24 11:45:49,850 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 37 transitions, 272 flow [2023-08-24 11:45:49,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.16666666666667) internal successors, (451), 6 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:45:49,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:45:49,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:45:49,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-24 11:45:49,850 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 11:45:49,851 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:45:49,851 INFO L85 PathProgramCache]: Analyzing trace with hash -202680170, now seen corresponding path program 2 times [2023-08-24 11:45:49,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:45:49,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507587213] [2023-08-24 11:45:49,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:45:49,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:45:49,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:45:50,484 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 11:45:50,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:45:50,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507587213] [2023-08-24 11:45:50,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507587213] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:45:50,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:45:50,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 11:45:50,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731346263] [2023-08-24 11:45:50,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:45:50,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 11:45:50,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:45:50,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 11:45:50,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-24 11:45:50,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 173 [2023-08-24 11:45:50,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 37 transitions, 272 flow. Second operand has 7 states, 7 states have (on average 70.85714285714286) internal successors, (496), 7 states have internal predecessors, (496), 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 11:45:50,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:45:50,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 173 [2023-08-24 11:45:50,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:45:50,727 INFO L124 PetriNetUnfolderBase]: 202/388 cut-off events. [2023-08-24 11:45:50,727 INFO L125 PetriNetUnfolderBase]: For 797/797 co-relation queries the response was YES. [2023-08-24 11:45:50,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1526 conditions, 388 events. 202/388 cut-off events. For 797/797 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1561 event pairs, 39 based on Foata normal form. 2/390 useless extension candidates. Maximal degree in co-relation 1506. Up to 181 conditions per place. [2023-08-24 11:45:50,729 INFO L140 encePairwiseOnDemand]: 166/173 looper letters, 44 selfloop transitions, 15 changer transitions 7/66 dead transitions. [2023-08-24 11:45:50,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 66 transitions, 538 flow [2023-08-24 11:45:50,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 11:45:50,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 11:45:50,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 531 transitions. [2023-08-24 11:45:50,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4384805945499587 [2023-08-24 11:45:50,730 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 531 transitions. [2023-08-24 11:45:50,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 531 transitions. [2023-08-24 11:45:50,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:45:50,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 531 transitions. [2023-08-24 11:45:50,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 75.85714285714286) internal successors, (531), 7 states have internal predecessors, (531), 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 11:45:50,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 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 11:45:50,733 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 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 11:45:50,733 INFO L175 Difference]: Start difference. First operand has 43 places, 37 transitions, 272 flow. Second operand 7 states and 531 transitions. [2023-08-24 11:45:50,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 66 transitions, 538 flow [2023-08-24 11:45:50,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 66 transitions, 519 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-08-24 11:45:50,736 INFO L231 Difference]: Finished difference. Result has 47 places, 43 transitions, 351 flow [2023-08-24 11:45:50,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=351, PETRI_PLACES=47, PETRI_TRANSITIONS=43} [2023-08-24 11:45:50,736 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 21 predicate places. [2023-08-24 11:45:50,736 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 43 transitions, 351 flow [2023-08-24 11:45:50,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 70.85714285714286) internal successors, (496), 7 states have internal predecessors, (496), 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 11:45:50,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:45:50,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:45:50,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-24 11:45:50,749 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 11:45:50,749 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:45:50,749 INFO L85 PathProgramCache]: Analyzing trace with hash 170921522, now seen corresponding path program 3 times [2023-08-24 11:45:50,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:45:50,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860246739] [2023-08-24 11:45:50,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:45:50,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:45:50,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:45:51,529 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 11:45:51,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:45:51,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860246739] [2023-08-24 11:45:51,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860246739] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:45:51,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:45:51,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-24 11:45:51,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830068470] [2023-08-24 11:45:51,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:45:51,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-24 11:45:51,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:45:51,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-24 11:45:51,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-24 11:45:51,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 173 [2023-08-24 11:45:51,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 43 transitions, 351 flow. Second operand has 8 states, 8 states have (on average 68.625) internal successors, (549), 8 states have internal predecessors, (549), 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 11:45:51,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:45:51,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 173 [2023-08-24 11:45:51,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:45:51,797 INFO L124 PetriNetUnfolderBase]: 213/405 cut-off events. [2023-08-24 11:45:51,797 INFO L125 PetriNetUnfolderBase]: For 1080/1080 co-relation queries the response was YES. [2023-08-24 11:45:51,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1719 conditions, 405 events. 213/405 cut-off events. For 1080/1080 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1647 event pairs, 36 based on Foata normal form. 2/407 useless extension candidates. Maximal degree in co-relation 1698. Up to 235 conditions per place. [2023-08-24 11:45:51,799 INFO L140 encePairwiseOnDemand]: 165/173 looper letters, 44 selfloop transitions, 21 changer transitions 3/68 dead transitions. [2023-08-24 11:45:51,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 68 transitions, 622 flow [2023-08-24 11:45:51,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 11:45:51,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 11:45:51,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 516 transitions. [2023-08-24 11:45:51,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42609413707679605 [2023-08-24 11:45:51,801 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 516 transitions. [2023-08-24 11:45:51,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 516 transitions. [2023-08-24 11:45:51,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:45:51,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 516 transitions. [2023-08-24 11:45:51,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 73.71428571428571) internal successors, (516), 7 states have internal predecessors, (516), 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 11:45:51,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 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 11:45:51,804 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 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 11:45:51,804 INFO L175 Difference]: Start difference. First operand has 47 places, 43 transitions, 351 flow. Second operand 7 states and 516 transitions. [2023-08-24 11:45:51,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 68 transitions, 622 flow [2023-08-24 11:45:51,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 68 transitions, 600 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-24 11:45:51,807 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 452 flow [2023-08-24 11:45:51,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=452, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2023-08-24 11:45:51,807 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 28 predicate places. [2023-08-24 11:45:51,808 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 452 flow [2023-08-24 11:45:51,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 68.625) internal successors, (549), 8 states have internal predecessors, (549), 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 11:45:51,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:45:51,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:45:51,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-24 11:45:51,808 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 11:45:51,808 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:45:51,809 INFO L85 PathProgramCache]: Analyzing trace with hash 170921801, now seen corresponding path program 3 times [2023-08-24 11:45:51,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:45:51,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973128121] [2023-08-24 11:45:51,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:45:51,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:45:51,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:45:52,183 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 11:45:52,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:45:52,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973128121] [2023-08-24 11:45:52,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973128121] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:45:52,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:45:52,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 11:45:52,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043594111] [2023-08-24 11:45:52,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:45:52,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 11:45:52,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:45:52,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 11:45:52,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-24 11:45:52,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 173 [2023-08-24 11:45:52,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 452 flow. Second operand has 5 states, 5 states have (on average 73.6) internal successors, (368), 5 states have internal predecessors, (368), 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 11:45:52,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:45:52,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 173 [2023-08-24 11:45:52,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:45:52,319 INFO L124 PetriNetUnfolderBase]: 219/418 cut-off events. [2023-08-24 11:45:52,320 INFO L125 PetriNetUnfolderBase]: For 1560/1560 co-relation queries the response was YES. [2023-08-24 11:45:52,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1858 conditions, 418 events. 219/418 cut-off events. For 1560/1560 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1702 event pairs, 38 based on Foata normal form. 3/421 useless extension candidates. Maximal degree in co-relation 1834. Up to 268 conditions per place. [2023-08-24 11:45:52,322 INFO L140 encePairwiseOnDemand]: 165/173 looper letters, 31 selfloop transitions, 26 changer transitions 2/59 dead transitions. [2023-08-24 11:45:52,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 59 transitions, 625 flow [2023-08-24 11:45:52,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 11:45:52,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 11:45:52,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 387 transitions. [2023-08-24 11:45:52,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44739884393063584 [2023-08-24 11:45:52,324 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 387 transitions. [2023-08-24 11:45:52,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 387 transitions. [2023-08-24 11:45:52,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:45:52,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 387 transitions. [2023-08-24 11:45:52,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 77.4) internal successors, (387), 5 states have internal predecessors, (387), 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 11:45:52,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 173.0) internal successors, (1038), 6 states have internal predecessors, (1038), 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 11:45:52,326 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 173.0) internal successors, (1038), 6 states have internal predecessors, (1038), 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 11:45:52,326 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 452 flow. Second operand 5 states and 387 transitions. [2023-08-24 11:45:52,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 59 transitions, 625 flow [2023-08-24 11:45:52,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 59 transitions, 586 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-08-24 11:45:52,331 INFO L231 Difference]: Finished difference. Result has 55 places, 51 transitions, 520 flow [2023-08-24 11:45:52,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=520, PETRI_PLACES=55, PETRI_TRANSITIONS=51} [2023-08-24 11:45:52,332 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 29 predicate places. [2023-08-24 11:45:52,332 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 51 transitions, 520 flow [2023-08-24 11:45:52,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.6) internal successors, (368), 5 states have internal predecessors, (368), 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 11:45:52,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:45:52,332 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:45:52,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-24 11:45:52,333 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 11:45:52,333 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:45:52,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1112917476, now seen corresponding path program 4 times [2023-08-24 11:45:52,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:45:52,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649782574] [2023-08-24 11:45:52,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:45:52,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:45:52,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:45:53,217 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 11:45:53,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:45:53,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649782574] [2023-08-24 11:45:53,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649782574] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:45:53,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:45:53,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 11:45:53,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241390514] [2023-08-24 11:45:53,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:45:53,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-24 11:45:53,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:45:53,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-24 11:45:53,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-08-24 11:45:53,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 173 [2023-08-24 11:45:53,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 51 transitions, 520 flow. Second operand has 9 states, 9 states have (on average 66.44444444444444) internal successors, (598), 9 states have internal predecessors, (598), 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 11:45:53,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:45:53,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 173 [2023-08-24 11:45:53,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:45:53,512 INFO L124 PetriNetUnfolderBase]: 265/506 cut-off events. [2023-08-24 11:45:53,512 INFO L125 PetriNetUnfolderBase]: For 2245/2245 co-relation queries the response was YES. [2023-08-24 11:45:53,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2388 conditions, 506 events. 265/506 cut-off events. For 2245/2245 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2274 event pairs, 37 based on Foata normal form. 4/510 useless extension candidates. Maximal degree in co-relation 2364. Up to 259 conditions per place. [2023-08-24 11:45:53,515 INFO L140 encePairwiseOnDemand]: 165/173 looper letters, 57 selfloop transitions, 29 changer transitions 3/89 dead transitions. [2023-08-24 11:45:53,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 89 transitions, 966 flow [2023-08-24 11:45:53,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-24 11:45:53,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-24 11:45:53,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 644 transitions. [2023-08-24 11:45:53,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41361592806679515 [2023-08-24 11:45:53,517 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 644 transitions. [2023-08-24 11:45:53,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 644 transitions. [2023-08-24 11:45:53,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:45:53,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 644 transitions. [2023-08-24 11:45:53,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 71.55555555555556) internal successors, (644), 9 states have internal predecessors, (644), 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 11:45:53,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 173.0) internal successors, (1730), 10 states have internal predecessors, (1730), 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 11:45:53,520 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 173.0) internal successors, (1730), 10 states have internal predecessors, (1730), 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 11:45:53,520 INFO L175 Difference]: Start difference. First operand has 55 places, 51 transitions, 520 flow. Second operand 9 states and 644 transitions. [2023-08-24 11:45:53,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 89 transitions, 966 flow [2023-08-24 11:45:53,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 89 transitions, 959 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 11:45:53,525 INFO L231 Difference]: Finished difference. Result has 64 places, 66 transitions, 790 flow [2023-08-24 11:45:53,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=790, PETRI_PLACES=64, PETRI_TRANSITIONS=66} [2023-08-24 11:45:53,525 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 38 predicate places. [2023-08-24 11:45:53,526 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 66 transitions, 790 flow [2023-08-24 11:45:53,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 66.44444444444444) internal successors, (598), 9 states have internal predecessors, (598), 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 11:45:53,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:45:53,526 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:45:53,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-24 11:45:53,526 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 11:45:53,526 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:45:53,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1288217018, now seen corresponding path program 5 times [2023-08-24 11:45:53,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:45:53,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67852827] [2023-08-24 11:45:53,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:45:53,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:45:53,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:45:54,388 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 11:45:54,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:45:54,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67852827] [2023-08-24 11:45:54,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67852827] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:45:54,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:45:54,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-24 11:45:54,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930579283] [2023-08-24 11:45:54,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:45:54,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-24 11:45:54,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:45:54,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-24 11:45:54,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-24 11:45:54,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 173 [2023-08-24 11:45:54,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 66 transitions, 790 flow. Second operand has 8 states, 8 states have (on average 68.625) internal successors, (549), 8 states have internal predecessors, (549), 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 11:45:54,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:45:54,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 173 [2023-08-24 11:45:54,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:45:54,783 INFO L124 PetriNetUnfolderBase]: 270/516 cut-off events. [2023-08-24 11:45:54,784 INFO L125 PetriNetUnfolderBase]: For 3063/3063 co-relation queries the response was YES. [2023-08-24 11:45:54,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2714 conditions, 516 events. 270/516 cut-off events. For 3063/3063 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2335 event pairs, 80 based on Foata normal form. 4/520 useless extension candidates. Maximal degree in co-relation 2687. Up to 228 conditions per place. [2023-08-24 11:45:54,787 INFO L140 encePairwiseOnDemand]: 164/173 looper letters, 62 selfloop transitions, 36 changer transitions 1/99 dead transitions. [2023-08-24 11:45:54,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 99 transitions, 1189 flow [2023-08-24 11:45:54,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-24 11:45:54,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-24 11:45:54,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 733 transitions. [2023-08-24 11:45:54,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4236994219653179 [2023-08-24 11:45:54,789 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 733 transitions. [2023-08-24 11:45:54,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 733 transitions. [2023-08-24 11:45:54,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:45:54,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 733 transitions. [2023-08-24 11:45:54,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 73.3) internal successors, (733), 10 states have internal predecessors, (733), 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 11:45:54,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 173.0) internal successors, (1903), 11 states have internal predecessors, (1903), 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 11:45:54,792 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 173.0) internal successors, (1903), 11 states have internal predecessors, (1903), 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 11:45:54,793 INFO L175 Difference]: Start difference. First operand has 64 places, 66 transitions, 790 flow. Second operand 10 states and 733 transitions. [2023-08-24 11:45:54,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 99 transitions, 1189 flow [2023-08-24 11:45:54,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 99 transitions, 1169 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-08-24 11:45:54,798 INFO L231 Difference]: Finished difference. Result has 72 places, 73 transitions, 977 flow [2023-08-24 11:45:54,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=770, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=977, PETRI_PLACES=72, PETRI_TRANSITIONS=73} [2023-08-24 11:45:54,799 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 46 predicate places. [2023-08-24 11:45:54,799 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 73 transitions, 977 flow [2023-08-24 11:45:54,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 68.625) internal successors, (549), 8 states have internal predecessors, (549), 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 11:45:54,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:45:54,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:45:54,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-24 11:45:54,800 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 11:45:54,800 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:45:54,800 INFO L85 PathProgramCache]: Analyzing trace with hash 187843139, now seen corresponding path program 1 times [2023-08-24 11:45:54,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:45:54,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075505296] [2023-08-24 11:45:54,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:45:54,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:45:54,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:45:55,151 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 11:45:55,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:45:55,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075505296] [2023-08-24 11:45:55,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075505296] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:45:55,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:45:55,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 11:45:55,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608210278] [2023-08-24 11:45:55,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:45:55,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 11:45:55,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:45:55,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 11:45:55,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-24 11:45:55,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 173 [2023-08-24 11:45:55,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 73 transitions, 977 flow. Second operand has 6 states, 6 states have (on average 72.33333333333333) internal successors, (434), 6 states have internal predecessors, (434), 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 11:45:55,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:45:55,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 173 [2023-08-24 11:45:55,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:45:55,352 INFO L124 PetriNetUnfolderBase]: 291/563 cut-off events. [2023-08-24 11:45:55,352 INFO L125 PetriNetUnfolderBase]: For 4527/4527 co-relation queries the response was YES. [2023-08-24 11:45:55,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3147 conditions, 563 events. 291/563 cut-off events. For 4527/4527 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2632 event pairs, 65 based on Foata normal form. 8/571 useless extension candidates. Maximal degree in co-relation 3116. Up to 323 conditions per place. [2023-08-24 11:45:55,355 INFO L140 encePairwiseOnDemand]: 165/173 looper letters, 61 selfloop transitions, 23 changer transitions 15/99 dead transitions. [2023-08-24 11:45:55,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 99 transitions, 1376 flow [2023-08-24 11:45:55,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 11:45:55,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 11:45:55,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 535 transitions. [2023-08-24 11:45:55,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44178364987613544 [2023-08-24 11:45:55,357 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 535 transitions. [2023-08-24 11:45:55,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 535 transitions. [2023-08-24 11:45:55,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:45:55,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 535 transitions. [2023-08-24 11:45:55,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 76.42857142857143) internal successors, (535), 7 states have internal predecessors, (535), 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 11:45:55,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 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 11:45:55,359 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 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 11:45:55,359 INFO L175 Difference]: Start difference. First operand has 72 places, 73 transitions, 977 flow. Second operand 7 states and 535 transitions. [2023-08-24 11:45:55,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 99 transitions, 1376 flow [2023-08-24 11:45:55,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 99 transitions, 1269 flow, removed 26 selfloop flow, removed 6 redundant places. [2023-08-24 11:45:55,368 INFO L231 Difference]: Finished difference. Result has 74 places, 74 transitions, 965 flow [2023-08-24 11:45:55,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=894, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=965, PETRI_PLACES=74, PETRI_TRANSITIONS=74} [2023-08-24 11:45:55,368 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 48 predicate places. [2023-08-24 11:45:55,368 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 74 transitions, 965 flow [2023-08-24 11:45:55,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.33333333333333) internal successors, (434), 6 states have internal predecessors, (434), 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 11:45:55,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:45:55,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:45:55,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-24 11:45:55,369 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 11:45:55,369 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:45:55,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1510038129, now seen corresponding path program 2 times [2023-08-24 11:45:55,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:45:55,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136042968] [2023-08-24 11:45:55,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:45:55,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:45:55,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:45:56,221 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 11:45:56,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:45:56,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136042968] [2023-08-24 11:45:56,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136042968] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:45:56,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:45:56,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-24 11:45:56,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418636607] [2023-08-24 11:45:56,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:45:56,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-24 11:45:56,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:45:56,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-24 11:45:56,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-08-24 11:45:56,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 173 [2023-08-24 11:45:56,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 74 transitions, 965 flow. Second operand has 8 states, 8 states have (on average 67.75) internal successors, (542), 8 states have internal predecessors, (542), 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 11:45:56,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:45:56,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 173 [2023-08-24 11:45:56,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:45:56,506 INFO L124 PetriNetUnfolderBase]: 259/515 cut-off events. [2023-08-24 11:45:56,506 INFO L125 PetriNetUnfolderBase]: For 4596/4596 co-relation queries the response was YES. [2023-08-24 11:45:56,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2910 conditions, 515 events. 259/515 cut-off events. For 4596/4596 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2399 event pairs, 37 based on Foata normal form. 8/523 useless extension candidates. Maximal degree in co-relation 2877. Up to 260 conditions per place. [2023-08-24 11:45:56,509 INFO L140 encePairwiseOnDemand]: 165/173 looper letters, 31 selfloop transitions, 19 changer transitions 38/88 dead transitions. [2023-08-24 11:45:56,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 88 transitions, 1192 flow [2023-08-24 11:45:56,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-24 11:45:56,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-24 11:45:56,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 575 transitions. [2023-08-24 11:45:56,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4154624277456647 [2023-08-24 11:45:56,511 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 575 transitions. [2023-08-24 11:45:56,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 575 transitions. [2023-08-24 11:45:56,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:45:56,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 575 transitions. [2023-08-24 11:45:56,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 71.875) internal successors, (575), 8 states have internal predecessors, (575), 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 11:45:56,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 173.0) internal successors, (1557), 9 states have internal predecessors, (1557), 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 11:45:56,514 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 173.0) internal successors, (1557), 9 states have internal predecessors, (1557), 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 11:45:56,514 INFO L175 Difference]: Start difference. First operand has 74 places, 74 transitions, 965 flow. Second operand 8 states and 575 transitions. [2023-08-24 11:45:56,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 88 transitions, 1192 flow [2023-08-24 11:45:56,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 88 transitions, 1160 flow, removed 12 selfloop flow, removed 3 redundant places. [2023-08-24 11:45:56,522 INFO L231 Difference]: Finished difference. Result has 79 places, 41 transitions, 502 flow [2023-08-24 11:45:56,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=910, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=502, PETRI_PLACES=79, PETRI_TRANSITIONS=41} [2023-08-24 11:45:56,522 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 53 predicate places. [2023-08-24 11:45:56,523 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 41 transitions, 502 flow [2023-08-24 11:45:56,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 67.75) internal successors, (542), 8 states have internal predecessors, (542), 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 11:45:56,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:45:56,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:45:56,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-24 11:45:56,523 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 11:45:56,523 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:45:56,523 INFO L85 PathProgramCache]: Analyzing trace with hash 477341489, now seen corresponding path program 3 times [2023-08-24 11:45:56,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:45:56,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100173907] [2023-08-24 11:45:56,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:45:56,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:45:56,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:45:56,841 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 11:45:56,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:45:56,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100173907] [2023-08-24 11:45:56,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100173907] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:45:56,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:45:56,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 11:45:56,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854678879] [2023-08-24 11:45:56,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:45:56,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 11:45:56,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:45:56,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 11:45:56,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-24 11:45:56,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 173 [2023-08-24 11:45:56,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 41 transitions, 502 flow. Second operand has 6 states, 6 states have (on average 73.33333333333333) internal successors, (440), 6 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:45:56,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:45:56,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 173 [2023-08-24 11:45:56,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:45:56,965 INFO L124 PetriNetUnfolderBase]: 110/232 cut-off events. [2023-08-24 11:45:56,965 INFO L125 PetriNetUnfolderBase]: For 2564/2564 co-relation queries the response was YES. [2023-08-24 11:45:56,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1339 conditions, 232 events. 110/232 cut-off events. For 2564/2564 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 813 event pairs, 40 based on Foata normal form. 6/238 useless extension candidates. Maximal degree in co-relation 1305. Up to 132 conditions per place. [2023-08-24 11:45:56,967 INFO L140 encePairwiseOnDemand]: 166/173 looper letters, 34 selfloop transitions, 9 changer transitions 11/54 dead transitions. [2023-08-24 11:45:56,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 54 transitions, 704 flow [2023-08-24 11:45:56,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 11:45:56,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 11:45:56,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 457 transitions. [2023-08-24 11:45:56,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44026974951830444 [2023-08-24 11:45:56,969 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 457 transitions. [2023-08-24 11:45:56,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 457 transitions. [2023-08-24 11:45:56,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:45:56,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 457 transitions. [2023-08-24 11:45:56,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 76.16666666666667) internal successors, (457), 6 states have internal predecessors, (457), 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 11:45:56,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 173.0) internal successors, (1211), 7 states have internal predecessors, (1211), 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 11:45:56,972 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 173.0) internal successors, (1211), 7 states have internal predecessors, (1211), 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 11:45:56,972 INFO L175 Difference]: Start difference. First operand has 79 places, 41 transitions, 502 flow. Second operand 6 states and 457 transitions. [2023-08-24 11:45:56,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 54 transitions, 704 flow [2023-08-24 11:45:56,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 54 transitions, 518 flow, removed 17 selfloop flow, removed 22 redundant places. [2023-08-24 11:45:56,977 INFO L231 Difference]: Finished difference. Result has 57 places, 39 transitions, 339 flow [2023-08-24 11:45:56,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=333, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=339, PETRI_PLACES=57, PETRI_TRANSITIONS=39} [2023-08-24 11:45:56,978 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 31 predicate places. [2023-08-24 11:45:56,978 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 39 transitions, 339 flow [2023-08-24 11:45:56,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.33333333333333) internal successors, (440), 6 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:45:56,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:45:56,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:45:56,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-24 11:45:56,979 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 11:45:56,979 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:45:56,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1105029037, now seen corresponding path program 4 times [2023-08-24 11:45:56,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:45:56,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482239731] [2023-08-24 11:45:56,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:45:56,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:45:56,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:45:57,484 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 11:45:57,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:45:57,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482239731] [2023-08-24 11:45:57,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482239731] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:45:57,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:45:57,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-24 11:45:57,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879153653] [2023-08-24 11:45:57,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:45:57,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-24 11:45:57,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:45:57,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-24 11:45:57,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-24 11:45:57,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 173 [2023-08-24 11:45:57,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 39 transitions, 339 flow. Second operand has 8 states, 8 states have (on average 71.75) internal successors, (574), 8 states have internal predecessors, (574), 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 11:45:57,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:45:57,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 173 [2023-08-24 11:45:57,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:45:57,719 INFO L124 PetriNetUnfolderBase]: 72/160 cut-off events. [2023-08-24 11:45:57,720 INFO L125 PetriNetUnfolderBase]: For 783/783 co-relation queries the response was YES. [2023-08-24 11:45:57,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 729 conditions, 160 events. 72/160 cut-off events. For 783/783 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 510 event pairs, 19 based on Foata normal form. 6/166 useless extension candidates. Maximal degree in co-relation 704. Up to 73 conditions per place. [2023-08-24 11:45:57,720 INFO L140 encePairwiseOnDemand]: 166/173 looper letters, 0 selfloop transitions, 0 changer transitions 45/45 dead transitions. [2023-08-24 11:45:57,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 45 transitions, 449 flow [2023-08-24 11:45:57,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 11:45:57,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 11:45:57,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 519 transitions. [2023-08-24 11:45:57,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2023-08-24 11:45:57,722 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 519 transitions. [2023-08-24 11:45:57,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 519 transitions. [2023-08-24 11:45:57,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:45:57,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 519 transitions. [2023-08-24 11:45:57,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 74.14285714285714) internal successors, (519), 7 states have internal predecessors, (519), 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 11:45:57,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 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 11:45:57,724 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 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 11:45:57,724 INFO L175 Difference]: Start difference. First operand has 57 places, 39 transitions, 339 flow. Second operand 7 states and 519 transitions. [2023-08-24 11:45:57,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 45 transitions, 449 flow [2023-08-24 11:45:57,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 45 transitions, 385 flow, removed 11 selfloop flow, removed 10 redundant places. [2023-08-24 11:45:57,726 INFO L231 Difference]: Finished difference. Result has 52 places, 0 transitions, 0 flow [2023-08-24 11:45:57,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=52, PETRI_TRANSITIONS=0} [2023-08-24 11:45:57,726 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 26 predicate places. [2023-08-24 11:45:57,727 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 0 transitions, 0 flow [2023-08-24 11:45:57,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 71.75) internal successors, (574), 8 states have internal predecessors, (574), 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 11:45:57,728 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-08-24 11:45:57,729 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-08-24 11:45:57,729 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-08-24 11:45:57,729 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-08-24 11:45:57,729 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-08-24 11:45:57,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-24 11:45:57,729 INFO L445 BasicCegarLoop]: Path program histogram: [5, 4, 3, 1, 1, 1, 1] [2023-08-24 11:45:57,732 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 11:45:57,732 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 11:45:57,734 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 11:45:57 BasicIcfg [2023-08-24 11:45:57,734 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 11:45:57,734 INFO L158 Benchmark]: Toolchain (without parser) took 16061.37ms. Allocated memory was 398.5MB in the beginning and 1.3GB in the end (delta: 926.9MB). Free memory was 373.0MB in the beginning and 841.6MB in the end (delta: -468.6MB). Peak memory consumption was 460.6MB. Max. memory is 16.0GB. [2023-08-24 11:45:57,734 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 398.5MB. Free memory is still 376.5MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 11:45:57,735 INFO L158 Benchmark]: CACSL2BoogieTranslator took 410.93ms. Allocated memory is still 398.5MB. Free memory was 373.0MB in the beginning and 347.4MB in the end (delta: 25.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. [2023-08-24 11:45:57,735 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.31ms. Allocated memory is still 398.5MB. Free memory was 347.4MB in the beginning and 344.0MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-24 11:45:57,735 INFO L158 Benchmark]: Boogie Preprocessor took 32.84ms. Allocated memory is still 398.5MB. Free memory was 344.0MB in the beginning and 341.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 11:45:57,735 INFO L158 Benchmark]: RCFGBuilder took 462.86ms. Allocated memory is still 398.5MB. Free memory was 341.9MB in the beginning and 292.8MB in the end (delta: 49.1MB). Peak memory consumption was 48.2MB. Max. memory is 16.0GB. [2023-08-24 11:45:57,735 INFO L158 Benchmark]: TraceAbstraction took 15076.75ms. Allocated memory was 398.5MB in the beginning and 1.3GB in the end (delta: 926.9MB). Free memory was 292.4MB in the beginning and 841.6MB in the end (delta: -549.2MB). Peak memory consumption was 380.9MB. Max. memory is 16.0GB. [2023-08-24 11:45:57,736 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 398.5MB. Free memory is still 376.5MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 410.93ms. Allocated memory is still 398.5MB. Free memory was 373.0MB in the beginning and 347.4MB in the end (delta: 25.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 57.31ms. Allocated memory is still 398.5MB. Free memory was 347.4MB in the beginning and 344.0MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 32.84ms. Allocated memory is still 398.5MB. Free memory was 344.0MB in the beginning and 341.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 462.86ms. Allocated memory is still 398.5MB. Free memory was 341.9MB in the beginning and 292.8MB in the end (delta: 49.1MB). Peak memory consumption was 48.2MB. Max. memory is 16.0GB. * TraceAbstraction took 15076.75ms. Allocated memory was 398.5MB in the beginning and 1.3GB in the end (delta: 926.9MB). Free memory was 292.4MB in the beginning and 841.6MB in the end (delta: -549.2MB). Peak memory consumption was 380.9MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 268]: Unsoundness Warning unspecified type, defaulting to int C: short [268] - GenericResultAtLocation [Line: 268]: Unsoundness Warning unspecified type, defaulting to int C: short [268] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.1s, 95 PlacesBefore, 26 PlacesAfterwards, 90 TransitionsBefore, 19 TransitionsAfterwards, 1244 CoEnabledTransitionPairs, 7 FixpointIterations, 36 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 81 TotalNumberOfCompositions, 3453 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1492, independent: 1333, independent conditional: 0, independent unconditional: 1333, dependent: 159, dependent conditional: 0, dependent unconditional: 159, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 682, independent: 644, independent conditional: 0, independent unconditional: 644, dependent: 38, dependent conditional: 0, dependent unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1492, independent: 689, independent conditional: 0, independent unconditional: 689, dependent: 121, dependent conditional: 0, dependent unconditional: 121, unknown: 682, unknown conditional: 0, unknown unconditional: 682] , Statistics on independence cache: Total cache size (in pairs): 47, Positive cache size: 34, Positive conditional cache size: 0, Positive unconditional cache size: 34, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: 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 5 procedures, 113 locations, 5 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: 15.0s, OverallIterations: 16, TraceHistogramMax: 1, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 3.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 355 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 355 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 254 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1406 IncrementalHoareTripleChecker+Invalid, 1660 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 254 mSolverCounterUnsat, 0 mSDtfsCounter, 1406 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 106 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=977occurred in iteration=12, InterpolantAutomatonStates: 96, 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, 0.3s SatisfiabilityAnalysisTime, 7.8s InterpolantComputationTime, 194 NumberOfCodeBlocks, 194 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 178 ConstructedInterpolants, 0 QuantifiedInterpolants, 2683 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-24 11:45:57,748 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...