/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/ldv-races/race-2_5-container_of.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 11:51:28,494 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 11:51:28,572 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 11:51:28,576 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 11:51:28,577 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 11:51:28,602 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 11:51:28,603 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 11:51:28,603 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 11:51:28,604 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 11:51:28,607 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 11:51:28,608 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 11:51:28,608 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 11:51:28,608 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 11:51:28,609 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 11:51:28,610 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 11:51:28,610 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 11:51:28,610 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 11:51:28,610 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 11:51:28,611 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 11:51:28,611 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 11:51:28,611 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 11:51:28,612 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 11:51:28,612 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 11:51:28,612 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 11:51:28,613 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 11:51:28,613 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 11:51:28,613 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 11:51:28,613 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 11:51:28,613 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 11:51:28,614 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 11:51:28,615 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 11:51:28,615 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 11:51:28,615 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 11:51:28,615 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 11:51:28,615 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 11:51:28,615 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-24 11:51:28,903 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 11:51:28,924 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 11:51:28,928 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 11:51:28,929 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 11:51:28,929 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 11:51:28,930 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-2_5-container_of.i [2023-08-24 11:51:30,155 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 11:51:30,440 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 11:51:30,441 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_5-container_of.i [2023-08-24 11:51:30,459 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3bf87839/19de1767f34b4d95a97efea91dfd3786/FLAG657135b17 [2023-08-24 11:51:30,474 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3bf87839/19de1767f34b4d95a97efea91dfd3786 [2023-08-24 11:51:30,478 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 11:51:30,479 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 11:51:30,483 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 11:51:30,483 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 11:51:30,486 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 11:51:30,487 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 11:51:30" (1/1) ... [2023-08-24 11:51:30,488 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c02dec2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:51:30, skipping insertion in model container [2023-08-24 11:51:30,488 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 11:51:30" (1/1) ... [2023-08-24 11:51:30,545 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 11:51:30,682 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-24 11:51:31,243 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_5-container_of.i[75002,75015] [2023-08-24 11:51:31,289 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 11:51:31,299 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 11:51:31,309 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-24 11:51:31,325 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [251] [2023-08-24 11:51:31,326 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [251] [2023-08-24 11:51:31,331 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [735] [2023-08-24 11:51:31,350 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_5-container_of.i[75002,75015] [2023-08-24 11:51:31,351 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned long [1691] [2023-08-24 11:51:31,371 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 11:51:31,478 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 11:51:31,478 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 11:51:31,478 WARN L669 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 11:51:31,484 INFO L206 MainTranslator]: Completed translation [2023-08-24 11:51:31,486 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:51:31 WrapperNode [2023-08-24 11:51:31,486 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 11:51:31,487 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 11:51:31,488 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 11:51:31,488 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 11:51:31,493 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:51:31" (1/1) ... [2023-08-24 11:51:31,528 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:51:31" (1/1) ... [2023-08-24 11:51:31,565 INFO L138 Inliner]: procedures = 469, calls = 63, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 146 [2023-08-24 11:51:31,565 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 11:51:31,566 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 11:51:31,566 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 11:51:31,567 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 11:51:31,574 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:51:31" (1/1) ... [2023-08-24 11:51:31,574 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:51:31" (1/1) ... [2023-08-24 11:51:31,578 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:51:31" (1/1) ... [2023-08-24 11:51:31,579 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:51:31" (1/1) ... [2023-08-24 11:51:31,600 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:51:31" (1/1) ... [2023-08-24 11:51:31,602 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:51:31" (1/1) ... [2023-08-24 11:51:31,605 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:51:31" (1/1) ... [2023-08-24 11:51:31,607 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:51:31" (1/1) ... [2023-08-24 11:51:31,612 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 11:51:31,625 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 11:51:31,625 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 11:51:31,625 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 11:51:31,626 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:51:31" (1/1) ... [2023-08-24 11:51:31,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 11:51:31,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 11:51:31,655 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 11:51:31,661 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 11:51:31,686 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-24 11:51:31,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 11:51:31,687 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-24 11:51:31,687 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 11:51:31,687 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-24 11:51:31,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 11:51:31,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-24 11:51:31,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 11:51:31,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 11:51:31,687 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2023-08-24 11:51:31,688 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2023-08-24 11:51:31,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 11:51:31,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 11:51:31,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 11:51:31,689 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 11:51:31,959 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 11:51:31,961 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 11:51:32,181 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 11:51:32,228 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 11:51:32,228 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-24 11:51:32,230 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 11:51:32 BoogieIcfgContainer [2023-08-24 11:51:32,230 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 11:51:32,232 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 11:51:32,232 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 11:51:32,234 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 11:51:32,235 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 11:51:30" (1/3) ... [2023-08-24 11:51:32,235 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c3ca201 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 11:51:32, skipping insertion in model container [2023-08-24 11:51:32,235 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:51:31" (2/3) ... [2023-08-24 11:51:32,235 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c3ca201 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 11:51:32, skipping insertion in model container [2023-08-24 11:51:32,236 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 11:51:32" (3/3) ... [2023-08-24 11:51:32,237 INFO L112 eAbstractionObserver]: Analyzing ICFG race-2_5-container_of.i [2023-08-24 11:51:32,261 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 11:51:32,261 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-08-24 11:51:32,261 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 11:51:32,330 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-24 11:51:32,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 163 transitions, 342 flow [2023-08-24 11:51:32,438 INFO L124 PetriNetUnfolderBase]: 8/203 cut-off events. [2023-08-24 11:51:32,438 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 11:51:32,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 203 events. 8/203 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 368 event pairs, 0 based on Foata normal form. 0/185 useless extension candidates. Maximal degree in co-relation 107. Up to 4 conditions per place. [2023-08-24 11:51:32,443 INFO L82 GeneralOperation]: Start removeDead. Operand has 163 places, 163 transitions, 342 flow [2023-08-24 11:51:32,447 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 151 places, 149 transitions, 310 flow [2023-08-24 11:51:32,452 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 11:51:32,466 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 151 places, 149 transitions, 310 flow [2023-08-24 11:51:32,470 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 151 places, 149 transitions, 310 flow [2023-08-24 11:51:32,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 149 transitions, 310 flow [2023-08-24 11:51:32,529 INFO L124 PetriNetUnfolderBase]: 5/180 cut-off events. [2023-08-24 11:51:32,530 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 11:51:32,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189 conditions, 180 events. 5/180 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 304 event pairs, 0 based on Foata normal form. 0/167 useless extension candidates. Maximal degree in co-relation 95. Up to 4 conditions per place. [2023-08-24 11:51:32,534 INFO L119 LiptonReduction]: Number of co-enabled transitions 2772 [2023-08-24 11:51:42,663 INFO L134 LiptonReduction]: Checked pairs total: 6373 [2023-08-24 11:51:42,664 INFO L136 LiptonReduction]: Total number of compositions: 145 [2023-08-24 11:51:42,675 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 11:51:42,681 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;@3977c092, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 11:51:42,681 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-08-24 11:51:42,684 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 11:51:42,684 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2023-08-24 11:51:42,684 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 11:51:42,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:51:42,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-24 11:51:42,686 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-24 11:51:42,689 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:51:42,689 INFO L85 PathProgramCache]: Analyzing trace with hash 569233885, now seen corresponding path program 1 times [2023-08-24 11:51:42,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:51:42,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539070708] [2023-08-24 11:51:42,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:51:42,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:51:42,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:51:43,232 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 11:51:43,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:51:43,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539070708] [2023-08-24 11:51:43,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539070708] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:51:43,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:51:43,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 11:51:43,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024420893] [2023-08-24 11:51:43,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:51:43,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 11:51:43,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:51:43,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 11:51:43,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 11:51:43,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 308 [2023-08-24 11:51:43,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 36 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 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 11:51:43,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:51:43,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 308 [2023-08-24 11:51:43,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:51:43,557 INFO L124 PetriNetUnfolderBase]: 617/1073 cut-off events. [2023-08-24 11:51:43,557 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2023-08-24 11:51:43,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2171 conditions, 1073 events. 617/1073 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4898 event pairs, 372 based on Foata normal form. 37/989 useless extension candidates. Maximal degree in co-relation 1936. Up to 854 conditions per place. [2023-08-24 11:51:43,570 INFO L140 encePairwiseOnDemand]: 300/308 looper letters, 41 selfloop transitions, 6 changer transitions 0/47 dead transitions. [2023-08-24 11:51:43,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 47 transitions, 200 flow [2023-08-24 11:51:43,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 11:51:43,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 11:51:43,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 392 transitions. [2023-08-24 11:51:43,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2023-08-24 11:51:43,596 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 392 transitions. [2023-08-24 11:51:43,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 392 transitions. [2023-08-24 11:51:43,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:51:43,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 392 transitions. [2023-08-24 11:51:43,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 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 11:51:43,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 308.0) internal successors, (1232), 4 states have internal predecessors, (1232), 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 11:51:43,608 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 308.0) internal successors, (1232), 4 states have internal predecessors, (1232), 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 11:51:43,609 INFO L175 Difference]: Start difference. First operand has 40 places, 36 transitions, 84 flow. Second operand 3 states and 392 transitions. [2023-08-24 11:51:43,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 47 transitions, 200 flow [2023-08-24 11:51:43,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 47 transitions, 192 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-24 11:51:43,614 INFO L231 Difference]: Finished difference. Result has 39 places, 39 transitions, 110 flow [2023-08-24 11:51:43,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=308, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=39, PETRI_TRANSITIONS=39} [2023-08-24 11:51:43,618 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -1 predicate places. [2023-08-24 11:51:43,618 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 39 transitions, 110 flow [2023-08-24 11:51:43,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 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 11:51:43,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:51:43,619 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-24 11:51:43,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 11:51:43,619 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-24 11:51:43,620 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:51:43,620 INFO L85 PathProgramCache]: Analyzing trace with hash 18362398, now seen corresponding path program 1 times [2023-08-24 11:51:43,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:51:43,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920270671] [2023-08-24 11:51:43,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:51:43,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:51:43,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:51:43,853 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 11:51:43,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:51:43,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920270671] [2023-08-24 11:51:43,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920270671] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:51:43,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:51:43,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 11:51:43,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62277936] [2023-08-24 11:51:43,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:51:43,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 11:51:43,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:51:43,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 11:51:43,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 11:51:43,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 308 [2023-08-24 11:51:43,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 39 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 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 11:51:43,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:51:43,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 308 [2023-08-24 11:51:43,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:51:44,113 INFO L124 PetriNetUnfolderBase]: 733/1280 cut-off events. [2023-08-24 11:51:44,114 INFO L125 PetriNetUnfolderBase]: For 303/303 co-relation queries the response was YES. [2023-08-24 11:51:44,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3107 conditions, 1280 events. 733/1280 cut-off events. For 303/303 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 6211 event pairs, 448 based on Foata normal form. 0/1165 useless extension candidates. Maximal degree in co-relation 1203. Up to 1061 conditions per place. [2023-08-24 11:51:44,121 INFO L140 encePairwiseOnDemand]: 301/308 looper letters, 44 selfloop transitions, 9 changer transitions 2/55 dead transitions. [2023-08-24 11:51:44,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 55 transitions, 275 flow [2023-08-24 11:51:44,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 11:51:44,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 11:51:44,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 390 transitions. [2023-08-24 11:51:44,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42207792207792205 [2023-08-24 11:51:44,124 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 390 transitions. [2023-08-24 11:51:44,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 390 transitions. [2023-08-24 11:51:44,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:51:44,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 390 transitions. [2023-08-24 11:51:44,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 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 11:51:44,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 308.0) internal successors, (1232), 4 states have internal predecessors, (1232), 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 11:51:44,130 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 308.0) internal successors, (1232), 4 states have internal predecessors, (1232), 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 11:51:44,130 INFO L175 Difference]: Start difference. First operand has 39 places, 39 transitions, 110 flow. Second operand 3 states and 390 transitions. [2023-08-24 11:51:44,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 55 transitions, 275 flow [2023-08-24 11:51:44,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 55 transitions, 264 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 11:51:44,142 INFO L231 Difference]: Finished difference. Result has 41 places, 45 transitions, 175 flow [2023-08-24 11:51:44,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=308, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=175, PETRI_PLACES=41, PETRI_TRANSITIONS=45} [2023-08-24 11:51:44,147 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2023-08-24 11:51:44,148 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 45 transitions, 175 flow [2023-08-24 11:51:44,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 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 11:51:44,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:51:44,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:51:44,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 11:51:44,149 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-24 11:51:44,150 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:51:44,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1101182937, now seen corresponding path program 1 times [2023-08-24 11:51:44,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:51:44,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524314859] [2023-08-24 11:51:44,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:51:44,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:51:44,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:51:44,257 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 11:51:44,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:51:44,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524314859] [2023-08-24 11:51:44,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524314859] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:51:44,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:51:44,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 11:51:44,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118895068] [2023-08-24 11:51:44,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:51:44,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 11:51:44,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:51:44,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 11:51:44,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 11:51:44,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 308 [2023-08-24 11:51:44,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 45 transitions, 175 flow. Second operand has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 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 11:51:44,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:51:44,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 308 [2023-08-24 11:51:44,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:51:44,353 INFO L124 PetriNetUnfolderBase]: 154/314 cut-off events. [2023-08-24 11:51:44,353 INFO L125 PetriNetUnfolderBase]: For 187/207 co-relation queries the response was YES. [2023-08-24 11:51:44,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 740 conditions, 314 events. 154/314 cut-off events. For 187/207 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1195 event pairs, 100 based on Foata normal form. 50/348 useless extension candidates. Maximal degree in co-relation 735. Up to 207 conditions per place. [2023-08-24 11:51:44,355 INFO L140 encePairwiseOnDemand]: 305/308 looper letters, 30 selfloop transitions, 2 changer transitions 0/36 dead transitions. [2023-08-24 11:51:44,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 36 transitions, 164 flow [2023-08-24 11:51:44,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 11:51:44,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 11:51:44,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 453 transitions. [2023-08-24 11:51:44,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4902597402597403 [2023-08-24 11:51:44,357 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 453 transitions. [2023-08-24 11:51:44,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 453 transitions. [2023-08-24 11:51:44,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:51:44,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 453 transitions. [2023-08-24 11:51:44,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 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 11:51:44,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 308.0) internal successors, (1232), 4 states have internal predecessors, (1232), 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 11:51:44,361 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 308.0) internal successors, (1232), 4 states have internal predecessors, (1232), 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 11:51:44,361 INFO L175 Difference]: Start difference. First operand has 41 places, 45 transitions, 175 flow. Second operand 3 states and 453 transitions. [2023-08-24 11:51:44,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 36 transitions, 164 flow [2023-08-24 11:51:44,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 36 transitions, 152 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-24 11:51:44,365 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 72 flow [2023-08-24 11:51:44,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=308, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2023-08-24 11:51:44,366 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -5 predicate places. [2023-08-24 11:51:44,369 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 72 flow [2023-08-24 11:51:44,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 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 11:51:44,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:51:44,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:51:44,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 11:51:44,370 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-24 11:51:44,370 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:51:44,370 INFO L85 PathProgramCache]: Analyzing trace with hash -307232839, now seen corresponding path program 1 times [2023-08-24 11:51:44,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:51:44,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446818373] [2023-08-24 11:51:44,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:51:44,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:51:44,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:51:44,611 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 11:51:44,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:51:44,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446818373] [2023-08-24 11:51:44,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446818373] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:51:44,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:51:44,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 11:51:44,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079074763] [2023-08-24 11:51:44,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:51:44,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 11:51:44,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:51:44,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 11:51:44,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 11:51:44,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 308 [2023-08-24 11:51:44,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 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 11:51:44,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:51:44,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 308 [2023-08-24 11:51:44,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:51:44,718 INFO L124 PetriNetUnfolderBase]: 214/415 cut-off events. [2023-08-24 11:51:44,718 INFO L125 PetriNetUnfolderBase]: For 117/117 co-relation queries the response was YES. [2023-08-24 11:51:44,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1013 conditions, 415 events. 214/415 cut-off events. For 117/117 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1413 event pairs, 167 based on Foata normal form. 0/399 useless extension candidates. Maximal degree in co-relation 1008. Up to 357 conditions per place. [2023-08-24 11:51:44,721 INFO L140 encePairwiseOnDemand]: 301/308 looper letters, 35 selfloop transitions, 6 changer transitions 0/41 dead transitions. [2023-08-24 11:51:44,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 41 transitions, 185 flow [2023-08-24 11:51:44,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 11:51:44,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 11:51:44,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 399 transitions. [2023-08-24 11:51:44,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2023-08-24 11:51:44,723 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 399 transitions. [2023-08-24 11:51:44,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 399 transitions. [2023-08-24 11:51:44,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:51:44,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 399 transitions. [2023-08-24 11:51:44,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.0) internal successors, (399), 3 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 11:51:44,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 308.0) internal successors, (1232), 4 states have internal predecessors, (1232), 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 11:51:44,726 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 308.0) internal successors, (1232), 4 states have internal predecessors, (1232), 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 11:51:44,727 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 72 flow. Second operand 3 states and 399 transitions. [2023-08-24 11:51:44,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 41 transitions, 185 flow [2023-08-24 11:51:44,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 41 transitions, 181 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 11:51:44,728 INFO L231 Difference]: Finished difference. Result has 37 places, 33 transitions, 118 flow [2023-08-24 11:51:44,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=308, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=37, PETRI_TRANSITIONS=33} [2023-08-24 11:51:44,729 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -3 predicate places. [2023-08-24 11:51:44,729 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 33 transitions, 118 flow [2023-08-24 11:51:44,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 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 11:51:44,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:51:44,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:51:44,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 11:51:44,730 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-24 11:51:44,730 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:51:44,730 INFO L85 PathProgramCache]: Analyzing trace with hash -839755071, now seen corresponding path program 1 times [2023-08-24 11:51:44,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:51:44,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367325297] [2023-08-24 11:51:44,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:51:44,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:51:44,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:51:44,904 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 11:51:44,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:51:44,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367325297] [2023-08-24 11:51:44,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367325297] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:51:44,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:51:44,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 11:51:44,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056277659] [2023-08-24 11:51:44,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:51:44,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 11:51:44,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:51:44,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 11:51:44,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 11:51:44,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 308 [2023-08-24 11:51:44,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 33 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 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 11:51:44,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:51:44,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 308 [2023-08-24 11:51:44,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:51:45,026 INFO L124 PetriNetUnfolderBase]: 225/445 cut-off events. [2023-08-24 11:51:45,026 INFO L125 PetriNetUnfolderBase]: For 180/180 co-relation queries the response was YES. [2023-08-24 11:51:45,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1131 conditions, 445 events. 225/445 cut-off events. For 180/180 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1571 event pairs, 176 based on Foata normal form. 0/434 useless extension candidates. Maximal degree in co-relation 1125. Up to 376 conditions per place. [2023-08-24 11:51:45,029 INFO L140 encePairwiseOnDemand]: 301/308 looper letters, 37 selfloop transitions, 9 changer transitions 0/46 dead transitions. [2023-08-24 11:51:45,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 46 transitions, 263 flow [2023-08-24 11:51:45,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 11:51:45,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 11:51:45,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 398 transitions. [2023-08-24 11:51:45,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43073593073593075 [2023-08-24 11:51:45,031 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 398 transitions. [2023-08-24 11:51:45,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 398 transitions. [2023-08-24 11:51:45,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:51:45,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 398 transitions. [2023-08-24 11:51:45,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 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 11:51:45,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 308.0) internal successors, (1232), 4 states have internal predecessors, (1232), 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 11:51:45,035 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 308.0) internal successors, (1232), 4 states have internal predecessors, (1232), 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 11:51:45,036 INFO L175 Difference]: Start difference. First operand has 37 places, 33 transitions, 118 flow. Second operand 3 states and 398 transitions. [2023-08-24 11:51:45,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 46 transitions, 263 flow [2023-08-24 11:51:45,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 46 transitions, 237 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-24 11:51:45,038 INFO L231 Difference]: Finished difference. Result has 39 places, 39 transitions, 176 flow [2023-08-24 11:51:45,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=308, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=39, PETRI_TRANSITIONS=39} [2023-08-24 11:51:45,039 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -1 predicate places. [2023-08-24 11:51:45,039 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 39 transitions, 176 flow [2023-08-24 11:51:45,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 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 11:51:45,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:51:45,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:51:45,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 11:51:45,040 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-24 11:51:45,040 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:51:45,040 INFO L85 PathProgramCache]: Analyzing trace with hash -659219863, now seen corresponding path program 1 times [2023-08-24 11:51:45,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:51:45,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520544802] [2023-08-24 11:51:45,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:51:45,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:51:45,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 11:51:45,142 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 11:51:45,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 11:51:45,238 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 11:51:45,238 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 11:51:45,239 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (7 of 8 remaining) [2023-08-24 11:51:45,240 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (6 of 8 remaining) [2023-08-24 11:51:45,240 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (5 of 8 remaining) [2023-08-24 11:51:45,241 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (4 of 8 remaining) [2023-08-24 11:51:45,241 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (3 of 8 remaining) [2023-08-24 11:51:45,241 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (2 of 8 remaining) [2023-08-24 11:51:45,241 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2023-08-24 11:51:45,241 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2023-08-24 11:51:45,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 11:51:45,242 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-08-24 11:51:45,246 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 11:51:45,246 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 11:51:45,298 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 11:51:45 BasicIcfg [2023-08-24 11:51:45,298 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 11:51:45,299 INFO L158 Benchmark]: Toolchain (without parser) took 14819.38ms. Allocated memory was 354.4MB in the beginning and 574.6MB in the end (delta: 220.2MB). Free memory was 327.9MB in the beginning and 458.5MB in the end (delta: -130.6MB). Peak memory consumption was 92.7MB. Max. memory is 16.0GB. [2023-08-24 11:51:45,299 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 354.4MB. Free memory was 332.3MB in the beginning and 332.2MB in the end (delta: 157.4kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 11:51:45,299 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1003.58ms. Allocated memory is still 354.4MB. Free memory was 327.2MB in the beginning and 272.0MB in the end (delta: 55.2MB). Peak memory consumption was 54.5MB. Max. memory is 16.0GB. [2023-08-24 11:51:45,300 INFO L158 Benchmark]: Boogie Procedure Inliner took 78.22ms. Allocated memory is still 354.4MB. Free memory was 272.0MB in the beginning and 268.5MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-24 11:51:45,300 INFO L158 Benchmark]: Boogie Preprocessor took 45.80ms. Allocated memory is still 354.4MB. Free memory was 268.5MB in the beginning and 265.7MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 11:51:45,300 INFO L158 Benchmark]: RCFGBuilder took 605.32ms. Allocated memory was 354.4MB in the beginning and 476.1MB in the end (delta: 121.6MB). Free memory was 265.7MB in the beginning and 437.7MB in the end (delta: -172.0MB). Peak memory consumption was 22.3MB. Max. memory is 16.0GB. [2023-08-24 11:51:45,301 INFO L158 Benchmark]: TraceAbstraction took 13066.55ms. Allocated memory was 476.1MB in the beginning and 574.6MB in the end (delta: 98.6MB). Free memory was 436.7MB in the beginning and 458.5MB in the end (delta: -21.8MB). Peak memory consumption was 76.7MB. Max. memory is 16.0GB. [2023-08-24 11:51:45,302 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 354.4MB. Free memory was 332.3MB in the beginning and 332.2MB in the end (delta: 157.4kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 1003.58ms. Allocated memory is still 354.4MB. Free memory was 327.2MB in the beginning and 272.0MB in the end (delta: 55.2MB). Peak memory consumption was 54.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 78.22ms. Allocated memory is still 354.4MB. Free memory was 272.0MB in the beginning and 268.5MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 45.80ms. Allocated memory is still 354.4MB. Free memory was 268.5MB in the beginning and 265.7MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 605.32ms. Allocated memory was 354.4MB in the beginning and 476.1MB in the end (delta: 121.6MB). Free memory was 265.7MB in the beginning and 437.7MB in the end (delta: -172.0MB). Peak memory consumption was 22.3MB. Max. memory is 16.0GB. * TraceAbstraction took 13066.55ms. Allocated memory was 476.1MB in the beginning and 574.6MB in the end (delta: 98.6MB). Free memory was 436.7MB in the beginning and 458.5MB in the end (delta: -21.8MB). Peak memory consumption was 76.7MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 251]: Unsoundness Warning unspecified type, defaulting to int C: short [251] - GenericResultAtLocation [Line: 251]: Unsoundness Warning unspecified type, defaulting to int C: short [251] - GenericResultAtLocation [Line: 735]: Unsoundness Warning unspecified type, defaulting to int C: unsigned short [735] - GenericResultAtLocation [Line: 1691]: Unsoundness Warning unspecified type, defaulting to int C: unsigned long [1691] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 10.2s, 151 PlacesBefore, 40 PlacesAfterwards, 149 TransitionsBefore, 36 TransitionsAfterwards, 2772 CoEnabledTransitionPairs, 7 FixpointIterations, 74 TrivialSequentialCompositions, 49 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 15 ConcurrentYvCompositions, 2 ChoiceCompositions, 145 TotalNumberOfCompositions, 6373 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2861, independent: 2567, independent conditional: 0, independent unconditional: 2567, dependent: 294, dependent conditional: 0, dependent unconditional: 294, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1468, independent: 1413, independent conditional: 0, independent unconditional: 1413, dependent: 55, dependent conditional: 0, dependent unconditional: 55, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2861, independent: 1154, independent conditional: 0, independent unconditional: 1154, dependent: 239, dependent conditional: 0, dependent unconditional: 239, unknown: 1468, unknown conditional: 0, unknown unconditional: 1468] , Statistics on independence cache: Total cache size (in pairs): 81, Positive cache size: 55, Positive conditional cache size: 0, Positive unconditional cache size: 55, Negative cache size: 26, Negative conditional cache size: 0, Negative unconditional cache size: 26, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 1675]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1676] 0 pthread_t t1,t2; [L1745] CALL, EXPR 0 my_drv_init() [L1739] 0 return 0; [L1745] RET, EXPR 0 my_drv_init() [L1745] 0 int ret = my_drv_init(); [L1746] COND TRUE 0 ret==0 [L1747] 0 int probe_ret; [L1748] 0 struct my_data data; [L1749] CALL, EXPR 0 my_drv_probe(&data) [L1706] 0 struct device *d = &data->dev; [L1708] 0 data->shared.a = 0 [L1709] 0 data->shared.b = 0 [L1710] 0 int res = __VERIFIER_nondet_int(); [L1711] COND FALSE 0 !(\read(res)) [L1713] FCALL, FORK 0 pthread_create(&t1, ((void *)0), my_callback, (void *)d) VAL [arg={7:24}, d={7:24}, data={7:0}, data={7:0}, pthread_create(&t1, ((void *)0), my_callback, (void *)d)=-5, res=0, t1={3:0}, t2={4:0}] [L1689] 1 struct device *dev = (struct device*)arg; [L1690] 1 struct my_data *data; [L1691] 1 const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); [L1691] 1 { const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); (struct my_data *)( (char *)__mptr - ((unsigned long) &((struct my_data *)0)->dev) );} [L1691] 1 data = ({ const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); (struct my_data *)( (char *)__mptr - ((unsigned long) &((struct my_data *)0)->dev) );}) [L1694] 1 data->shared.a = 1 VAL [__mptr={1158:5}, arg={7:24}, arg={7:24}, data={1158:-19}, dev={7:24}, t1={3:0}, t2={4:0}] [L1714] FCALL, FORK 0 pthread_create(&t2, ((void *)0), my_callback, (void *)d) VAL [__mptr={1158:5}, arg={7:24}, arg={7:24}, d={7:24}, data={1158:-19}, data={7:0}, data={7:0}, dev={7:24}, pthread_create(&t2, ((void *)0), my_callback, (void *)d)=-4, res=0, t1={3:0}, t2={4:0}] [L1697] EXPR 1 data->shared.b [L1697] 1 int lb = data->shared.b; [L1715] 0 return 0; [L1749] RET, EXPR 0 my_drv_probe(&data) [L1689] 2 struct device *dev = (struct device*)arg; [L1690] 2 struct my_data *data; [L1691] 2 const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); [L1691] 2 { const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); (struct my_data *)( (char *)__mptr - ((unsigned long) &((struct my_data *)0)->dev) );} [L1691] 2 data = ({ const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); (struct my_data *)( (char *)__mptr - ((unsigned long) &((struct my_data *)0)->dev) );}) [L1700] 1 data->shared.b = lb + 1 VAL [__mptr={7:24}, arg={7:24}, arg={7:24}, data={1158:0}, dev={7:24}, lb=-3, pthread_mutex_lock (&data->lock)=0, t1={3:0}, t2={4:0}] [L1749] 0 probe_ret = my_drv_probe(&data) [L1750] COND TRUE 0 probe_ret==0 [L1751] CALL 0 my_drv_disconnect(&data) [L1721] 0 void *status; [L1722] 0 \read(t1) VAL [\read(t1)=-5, __mptr={7:24}, arg={7:24}, arg={7:24}, data={1158:-19}, data={7:0}, data={7:0}, dev={7:24}, lb=-3, pthread_mutex_lock (&data->lock)=0, status={10:0}, t1={3:0}, t2={4:0}] [L1703] 1 return 0; [L1722] FCALL, JOIN 1 pthread_join(t1, &status) VAL [\read(t1)=-5, \result={0:0}, __mptr={7:24}, arg={7:24}, arg={7:24}, data={1158:-19}, data={7:0}, data={7:0}, dev={7:24}, lb=-3, pthread_join(t1, &status)={0:0}, pthread_mutex_lock (&data->lock)=0, status={10:0}, t1={3:0}, t2={4:0}] [L1724] 0 data->shared.a = 3 VAL [\result={0:0}, __mptr={7:24}, arg={7:24}, arg={7:24}, data={1158:-19}, data={7:0}, data={7:0}, dev={7:24}, lb=-3, pthread_mutex_lock (&data->lock)=0, status={10:0}, t1={3:0}, t2={4:0}] [L1694] 2 data->shared.a = 1 VAL [\result={0:0}, __mptr={7:24}, arg={7:24}, arg={7:24}, data={1158:-19}, dev={7:24}, lb=-3, t1={3:0}, t2={4:0}] [L1727] 0 data->shared.b = 3 VAL [\result={0:0}, __mptr={7:24}, arg={7:24}, arg={7:24}, data={1158:-19}, data={7:0}, data={7:0}, dev={7:24}, lb=-3, status={10:0}, t1={3:0}, t2={4:0}] [L1730] EXPR 0 data->shared.a [L1730] CALL 0 ldv_assert(data->shared.a==3) [L1675] COND TRUE 0 !expression [L1675] 0 reach_error() VAL [\old(expression)=0, \result={0:0}, __mptr={7:24}, arg={7:24}, arg={7:24}, data={1158:-19}, dev={7:24}, expression=0, lb=-3, t1={3:0}, t2={4:0}] - UnprovableResult [Line: 1675]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1675]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1675]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1675]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1675]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1713]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1714]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 4 procedures, 174 locations, 8 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: 12.9s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 10.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 37 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 37 mSDsluCounter, 14 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 327 IncrementalHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 14 mSDtfsCounter, 327 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=176occurred in iteration=5, InterpolantAutomatonStates: 15, 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, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 70 NumberOfCodeBlocks, 70 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 47 ConstructedInterpolants, 0 QuantifiedInterpolants, 169 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 RESULT: Ultimate proved your program to be incorrect! [2023-08-24 11:51:45,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...