/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked TOGETHER -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_78-equ_racing_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 15:24:07,302 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 15:24:07,357 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 15:24:07,361 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 15:24:07,361 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 15:24:07,361 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 15:24:07,361 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 15:24:07,388 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 15:24:07,388 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 15:24:07,391 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 15:24:07,391 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 15:24:07,391 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 15:24:07,392 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 15:24:07,393 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 15:24:07,393 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 15:24:07,393 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 15:24:07,393 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 15:24:07,393 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 15:24:07,394 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 15:24:07,394 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 15:24:07,394 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 15:24:07,394 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 15:24:07,394 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 15:24:07,394 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 15:24:07,394 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 15:24:07,395 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 15:24:07,395 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 15:24:07,395 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 15:24:07,395 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 15:24:07,395 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 15:24:07,396 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 15:24:07,396 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 15:24:07,396 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 15:24:07,396 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 15:24:07,396 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 15:24:07,397 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 15:24:07,397 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 15:24:07,397 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 15:24:07,397 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 15:24:07,397 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 15:24:07,397 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 15:24:07,397 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 15:24:07,594 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 15:24:07,611 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 15:24:07,612 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 15:24:07,613 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 15:24:07,613 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 15:24:07,614 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_78-equ_racing_bound2.i [2023-08-03 15:24:08,555 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 15:24:08,733 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 15:24:08,734 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_78-equ_racing_bound2.i [2023-08-03 15:24:08,752 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/950f805d0/eb347ab994fc4d279e33ba25b36d2afe/FLAGc8c321257 [2023-08-03 15:24:08,762 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/950f805d0/eb347ab994fc4d279e33ba25b36d2afe [2023-08-03 15:24:08,763 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 15:24:08,764 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 15:24:08,765 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 15:24:08,765 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 15:24:08,770 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 15:24:08,770 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 03:24:08" (1/1) ... [2023-08-03 15:24:08,771 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54994e68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:24:08, skipping insertion in model container [2023-08-03 15:24:08,771 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 03:24:08" (1/1) ... [2023-08-03 15:24:08,819 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 15:24:09,072 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_78-equ_racing_bound2.i[47038,47051] [2023-08-03 15:24:09,087 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 15:24:09,095 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 15:24:09,105 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-03 15:24:09,106 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-03 15:24:09,117 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_78-equ_racing_bound2.i[47038,47051] [2023-08-03 15:24:09,123 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 15:24:09,170 INFO L206 MainTranslator]: Completed translation [2023-08-03 15:24:09,170 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:24:09 WrapperNode [2023-08-03 15:24:09,170 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 15:24:09,171 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 15:24:09,171 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 15:24:09,171 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 15:24:09,175 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:24:09" (1/1) ... [2023-08-03 15:24:09,189 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:24:09" (1/1) ... [2023-08-03 15:24:09,206 INFO L138 Inliner]: procedures = 271, calls = 56, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 204 [2023-08-03 15:24:09,206 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 15:24:09,206 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 15:24:09,206 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 15:24:09,207 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 15:24:09,213 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:24:09" (1/1) ... [2023-08-03 15:24:09,213 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:24:09" (1/1) ... [2023-08-03 15:24:09,215 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:24:09" (1/1) ... [2023-08-03 15:24:09,215 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:24:09" (1/1) ... [2023-08-03 15:24:09,219 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:24:09" (1/1) ... [2023-08-03 15:24:09,222 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:24:09" (1/1) ... [2023-08-03 15:24:09,223 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:24:09" (1/1) ... [2023-08-03 15:24:09,224 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:24:09" (1/1) ... [2023-08-03 15:24:09,227 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 15:24:09,227 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 15:24:09,227 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 15:24:09,227 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 15:24:09,228 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:24:09" (1/1) ... [2023-08-03 15:24:09,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 15:24:09,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:24:09,256 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) [2023-08-03 15:24:09,265 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 [2023-08-03 15:24:09,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 15:24:09,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 15:24:09,293 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 15:24:09,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 15:24:09,293 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-03 15:24:09,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 15:24:09,293 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-03 15:24:09,293 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-03 15:24:09,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 15:24:09,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 15:24:09,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 15:24:09,295 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 15:24:09,428 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 15:24:09,431 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 15:24:09,629 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 15:24:09,634 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 15:24:09,634 INFO L302 CfgBuilder]: Removed 22 assume(true) statements. [2023-08-03 15:24:09,635 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 03:24:09 BoogieIcfgContainer [2023-08-03 15:24:09,635 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 15:24:09,637 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 15:24:09,637 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 15:24:09,639 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 15:24:09,639 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 03:24:08" (1/3) ... [2023-08-03 15:24:09,639 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70eb07d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 03:24:09, skipping insertion in model container [2023-08-03 15:24:09,639 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:24:09" (2/3) ... [2023-08-03 15:24:09,640 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70eb07d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 03:24:09, skipping insertion in model container [2023-08-03 15:24:09,640 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 03:24:09" (3/3) ... [2023-08-03 15:24:09,640 INFO L112 eAbstractionObserver]: Analyzing ICFG goblint-regression_28-race_reach_78-equ_racing_bound2.i [2023-08-03 15:24:09,662 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 15:24:09,668 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 15:24:09,669 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-03 15:24:09,669 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 15:24:09,707 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-03 15:24:09,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 175 places, 201 transitions, 410 flow [2023-08-03 15:24:09,781 INFO L124 PetriNetUnfolderBase]: 43/271 cut-off events. [2023-08-03 15:24:09,782 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-03 15:24:09,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 277 conditions, 271 events. 43/271 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 823 event pairs, 0 based on Foata normal form. 0/222 useless extension candidates. Maximal degree in co-relation 132. Up to 8 conditions per place. [2023-08-03 15:24:09,790 INFO L82 GeneralOperation]: Start removeDead. Operand has 175 places, 201 transitions, 410 flow [2023-08-03 15:24:09,794 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 170 places, 194 transitions, 393 flow [2023-08-03 15:24:09,796 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 15:24:09,802 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 170 places, 194 transitions, 393 flow [2023-08-03 15:24:09,803 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 170 places, 194 transitions, 393 flow [2023-08-03 15:24:09,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 194 transitions, 393 flow [2023-08-03 15:24:09,836 INFO L124 PetriNetUnfolderBase]: 41/264 cut-off events. [2023-08-03 15:24:09,836 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:24:09,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269 conditions, 264 events. 41/264 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 803 event pairs, 0 based on Foata normal form. 0/216 useless extension candidates. Maximal degree in co-relation 132. Up to 8 conditions per place. [2023-08-03 15:24:09,840 INFO L119 LiptonReduction]: Number of co-enabled transitions 8664 [2023-08-03 15:24:15,784 INFO L134 LiptonReduction]: Checked pairs total: 18412 [2023-08-03 15:24:15,784 INFO L136 LiptonReduction]: Total number of compositions: 166 [2023-08-03 15:24:15,802 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 15:24:15,808 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@45c97227, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 15:24:15,808 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 15:24:15,814 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 15:24:15,814 INFO L124 PetriNetUnfolderBase]: 7/29 cut-off events. [2023-08-03 15:24:15,814 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:24:15,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:24:15,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 15:24:15,815 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 15:24:15,819 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:24:15,819 INFO L85 PathProgramCache]: Analyzing trace with hash 733617857, now seen corresponding path program 1 times [2023-08-03 15:24:15,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:24:15,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772136547] [2023-08-03 15:24:15,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:24:15,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:24:15,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:24:16,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 15:24:16,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:24:16,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772136547] [2023-08-03 15:24:16,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772136547] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:24:16,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:24:16,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 15:24:16,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464121357] [2023-08-03 15:24:16,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:24:16,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 15:24:16,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:24:16,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 15:24:16,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 15:24:16,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 367 [2023-08-03 15:24:16,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 64 transitions, 133 flow. Second operand has 3 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 states have internal predecessors, (511), 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) [2023-08-03 15:24:16,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:24:16,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 367 [2023-08-03 15:24:16,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:24:16,226 INFO L124 PetriNetUnfolderBase]: 274/651 cut-off events. [2023-08-03 15:24:16,226 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:24:16,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1220 conditions, 651 events. 274/651 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 3505 event pairs, 0 based on Foata normal form. 119/685 useless extension candidates. Maximal degree in co-relation 1175. Up to 529 conditions per place. [2023-08-03 15:24:16,231 INFO L140 encePairwiseOnDemand]: 342/367 looper letters, 49 selfloop transitions, 2 changer transitions 0/59 dead transitions. [2023-08-03 15:24:16,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 59 transitions, 225 flow [2023-08-03 15:24:16,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 15:24:16,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 15:24:16,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2023-08-03 15:24:16,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5367847411444142 [2023-08-03 15:24:16,244 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2023-08-03 15:24:16,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2023-08-03 15:24:16,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:24:16,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2023-08-03 15:24:16,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 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) [2023-08-03 15:24:16,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 367.0) internal successors, (1468), 4 states have internal predecessors, (1468), 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) [2023-08-03 15:24:16,256 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 367.0) internal successors, (1468), 4 states have internal predecessors, (1468), 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) [2023-08-03 15:24:16,257 INFO L175 Difference]: Start difference. First operand has 44 places, 64 transitions, 133 flow. Second operand 3 states and 591 transitions. [2023-08-03 15:24:16,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 59 transitions, 225 flow [2023-08-03 15:24:16,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 59 transitions, 225 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 15:24:16,261 INFO L231 Difference]: Finished difference. Result has 46 places, 42 transitions, 97 flow [2023-08-03 15:24:16,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=97, PETRI_PLACES=46, PETRI_TRANSITIONS=42} [2023-08-03 15:24:16,264 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 2 predicate places. [2023-08-03 15:24:16,264 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 42 transitions, 97 flow [2023-08-03 15:24:16,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 states have internal predecessors, (511), 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) [2023-08-03 15:24:16,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:24:16,265 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 15:24:16,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 15:24:16,265 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 15:24:16,265 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:24:16,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1260636167, now seen corresponding path program 1 times [2023-08-03 15:24:16,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:24:16,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94164663] [2023-08-03 15:24:16,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:24:16,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:24:16,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 15:24:16,293 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 15:24:16,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 15:24:16,314 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 15:24:16,315 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 15:24:16,316 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-03 15:24:16,317 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-03 15:24:16,317 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-08-03 15:24:16,317 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-08-03 15:24:16,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 15:24:16,317 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 15:24:16,319 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 15:24:16,319 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 15:24:16,334 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-03 15:24:16,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 223 places, 260 transitions, 538 flow [2023-08-03 15:24:16,375 INFO L124 PetriNetUnfolderBase]: 72/424 cut-off events. [2023-08-03 15:24:16,375 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-03 15:24:16,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 438 conditions, 424 events. 72/424 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1596 event pairs, 0 based on Foata normal form. 0/343 useless extension candidates. Maximal degree in co-relation 273. Up to 12 conditions per place. [2023-08-03 15:24:16,377 INFO L82 GeneralOperation]: Start removeDead. Operand has 223 places, 260 transitions, 538 flow [2023-08-03 15:24:16,380 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 222 places, 258 transitions, 534 flow [2023-08-03 15:24:16,380 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 15:24:16,380 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 222 places, 258 transitions, 534 flow [2023-08-03 15:24:16,381 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 222 places, 258 transitions, 534 flow [2023-08-03 15:24:16,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 222 places, 258 transitions, 534 flow [2023-08-03 15:24:16,410 INFO L124 PetriNetUnfolderBase]: 71/422 cut-off events. [2023-08-03 15:24:16,410 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-03 15:24:16,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 436 conditions, 422 events. 71/422 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1612 event pairs, 0 based on Foata normal form. 0/342 useless extension candidates. Maximal degree in co-relation 271. Up to 12 conditions per place. [2023-08-03 15:24:16,422 INFO L119 LiptonReduction]: Number of co-enabled transitions 25080 [2023-08-03 15:24:22,294 INFO L134 LiptonReduction]: Checked pairs total: 57220 [2023-08-03 15:24:22,294 INFO L136 LiptonReduction]: Total number of compositions: 206 [2023-08-03 15:24:22,295 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 15:24:22,296 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@45c97227, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 15:24:22,296 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-03 15:24:22,298 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 15:24:22,298 INFO L124 PetriNetUnfolderBase]: 6/21 cut-off events. [2023-08-03 15:24:22,298 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:24:22,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:24:22,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 15:24:22,298 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-03 15:24:22,298 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:24:22,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1234424057, now seen corresponding path program 1 times [2023-08-03 15:24:22,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:24:22,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143277698] [2023-08-03 15:24:22,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:24:22,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:24:22,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:24:22,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 15:24:22,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:24:22,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143277698] [2023-08-03 15:24:22,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143277698] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:24:22,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:24:22,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 15:24:22,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756887284] [2023-08-03 15:24:22,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:24:22,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 15:24:22,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:24:22,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 15:24:22,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 15:24:22,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 466 [2023-08-03 15:24:22,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 98 transitions, 214 flow. Second operand has 3 states, 3 states have (on average 215.33333333333334) internal successors, (646), 3 states have internal predecessors, (646), 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) [2023-08-03 15:24:22,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:24:22,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 466 [2023-08-03 15:24:22,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:24:23,128 INFO L124 PetriNetUnfolderBase]: 8903/13936 cut-off events. [2023-08-03 15:24:23,128 INFO L125 PetriNetUnfolderBase]: For 93/93 co-relation queries the response was YES. [2023-08-03 15:24:23,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26898 conditions, 13936 events. 8903/13936 cut-off events. For 93/93 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 93141 event pairs, 6020 based on Foata normal form. 3325/15003 useless extension candidates. Maximal degree in co-relation 11579. Up to 12844 conditions per place. [2023-08-03 15:24:23,169 INFO L140 encePairwiseOnDemand]: 432/466 looper letters, 66 selfloop transitions, 2 changer transitions 0/83 dead transitions. [2023-08-03 15:24:23,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 83 transitions, 320 flow [2023-08-03 15:24:23,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 15:24:23,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 15:24:23,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 752 transitions. [2023-08-03 15:24:23,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5379113018597997 [2023-08-03 15:24:23,172 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 752 transitions. [2023-08-03 15:24:23,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 752 transitions. [2023-08-03 15:24:23,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:24:23,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 752 transitions. [2023-08-03 15:24:23,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 250.66666666666666) internal successors, (752), 3 states have internal predecessors, (752), 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) [2023-08-03 15:24:23,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 466.0) internal successors, (1864), 4 states have internal predecessors, (1864), 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) [2023-08-03 15:24:23,178 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 466.0) internal successors, (1864), 4 states have internal predecessors, (1864), 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) [2023-08-03 15:24:23,178 INFO L175 Difference]: Start difference. First operand has 67 places, 98 transitions, 214 flow. Second operand 3 states and 752 transitions. [2023-08-03 15:24:23,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 83 transitions, 320 flow [2023-08-03 15:24:23,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 83 transitions, 320 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 15:24:23,181 INFO L231 Difference]: Finished difference. Result has 70 places, 68 transitions, 164 flow [2023-08-03 15:24:23,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=466, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=70, PETRI_TRANSITIONS=68} [2023-08-03 15:24:23,182 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 3 predicate places. [2023-08-03 15:24:23,182 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 68 transitions, 164 flow [2023-08-03 15:24:23,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 215.33333333333334) internal successors, (646), 3 states have internal predecessors, (646), 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) [2023-08-03 15:24:23,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:24:23,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:24:23,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 15:24:23,183 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-03 15:24:23,183 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:24:23,183 INFO L85 PathProgramCache]: Analyzing trace with hash 705268624, now seen corresponding path program 1 times [2023-08-03 15:24:23,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:24:23,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290959977] [2023-08-03 15:24:23,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:24:23,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:24:23,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:24:23,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 15:24:23,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:24:23,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290959977] [2023-08-03 15:24:23,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290959977] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:24:23,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:24:23,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 15:24:23,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748928340] [2023-08-03 15:24:23,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:24:23,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 15:24:23,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:24:23,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 15:24:23,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-03 15:24:23,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 466 [2023-08-03 15:24:23,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 68 transitions, 164 flow. Second operand has 4 states, 4 states have (on average 207.5) internal successors, (830), 4 states have internal predecessors, (830), 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) [2023-08-03 15:24:23,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:24:23,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 466 [2023-08-03 15:24:23,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:24:24,445 INFO L124 PetriNetUnfolderBase]: 10882/17631 cut-off events. [2023-08-03 15:24:24,445 INFO L125 PetriNetUnfolderBase]: For 749/749 co-relation queries the response was YES. [2023-08-03 15:24:24,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35061 conditions, 17631 events. 10882/17631 cut-off events. For 749/749 co-relation queries the response was YES. Maximal size of possible extension queue 740. Compared 128419 event pairs, 3228 based on Foata normal form. 0/15427 useless extension candidates. Maximal degree in co-relation 34953. Up to 10910 conditions per place. [2023-08-03 15:24:24,490 INFO L140 encePairwiseOnDemand]: 453/466 looper letters, 114 selfloop transitions, 13 changer transitions 8/150 dead transitions. [2023-08-03 15:24:24,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 150 transitions, 626 flow [2023-08-03 15:24:24,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 15:24:24,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 15:24:24,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 961 transitions. [2023-08-03 15:24:24,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5155579399141631 [2023-08-03 15:24:24,493 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 961 transitions. [2023-08-03 15:24:24,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 961 transitions. [2023-08-03 15:24:24,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:24:24,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 961 transitions. [2023-08-03 15:24:24,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 240.25) internal successors, (961), 4 states have internal predecessors, (961), 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) [2023-08-03 15:24:24,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 466.0) internal successors, (2330), 5 states have internal predecessors, (2330), 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) [2023-08-03 15:24:24,498 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 466.0) internal successors, (2330), 5 states have internal predecessors, (2330), 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) [2023-08-03 15:24:24,498 INFO L175 Difference]: Start difference. First operand has 70 places, 68 transitions, 164 flow. Second operand 4 states and 961 transitions. [2023-08-03 15:24:24,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 150 transitions, 626 flow [2023-08-03 15:24:24,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 150 transitions, 623 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 15:24:24,503 INFO L231 Difference]: Finished difference. Result has 75 places, 80 transitions, 268 flow [2023-08-03 15:24:24,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=466, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=268, PETRI_PLACES=75, PETRI_TRANSITIONS=80} [2023-08-03 15:24:24,505 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 8 predicate places. [2023-08-03 15:24:24,505 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 80 transitions, 268 flow [2023-08-03 15:24:24,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 207.5) internal successors, (830), 4 states have internal predecessors, (830), 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) [2023-08-03 15:24:24,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:24:24,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:24:24,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-03 15:24:24,506 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-03 15:24:24,506 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:24:24,506 INFO L85 PathProgramCache]: Analyzing trace with hash 2087176397, now seen corresponding path program 1 times [2023-08-03 15:24:24,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:24:24,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675240139] [2023-08-03 15:24:24,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:24:24,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:24:24,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:24:24,562 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 15:24:24,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:24:24,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675240139] [2023-08-03 15:24:24,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675240139] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 15:24:24,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211839275] [2023-08-03 15:24:24,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:24:24,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:24:24,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:24:24,567 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 15:24:24,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-03 15:24:24,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:24:24,645 INFO L262 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 15:24:24,647 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 15:24:24,953 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 15:24:24,953 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 15:24:24,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 15:24:24,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211839275] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 15:24:24,964 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 15:24:24,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 15:24:24,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570473204] [2023-08-03 15:24:24,965 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 15:24:24,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 15:24:24,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:24:24,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 15:24:24,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 15:24:24,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 466 [2023-08-03 15:24:24,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 80 transitions, 268 flow. Second operand has 5 states, 5 states have (on average 215.2) internal successors, (1076), 5 states have internal predecessors, (1076), 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) [2023-08-03 15:24:24,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:24:24,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 466 [2023-08-03 15:24:24,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:24:25,867 INFO L124 PetriNetUnfolderBase]: 10649/17960 cut-off events. [2023-08-03 15:24:25,867 INFO L125 PetriNetUnfolderBase]: For 5103/5103 co-relation queries the response was YES. [2023-08-03 15:24:25,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40476 conditions, 17960 events. 10649/17960 cut-off events. For 5103/5103 co-relation queries the response was YES. Maximal size of possible extension queue 727. Compared 137910 event pairs, 813 based on Foata normal form. 15/16737 useless extension candidates. Maximal degree in co-relation 8387. Up to 14949 conditions per place. [2023-08-03 15:24:25,945 INFO L140 encePairwiseOnDemand]: 462/466 looper letters, 110 selfloop transitions, 5 changer transitions 0/130 dead transitions. [2023-08-03 15:24:25,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 130 transitions, 654 flow [2023-08-03 15:24:25,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 15:24:25,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 15:24:25,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 950 transitions. [2023-08-03 15:24:25,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.509656652360515 [2023-08-03 15:24:25,947 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 950 transitions. [2023-08-03 15:24:25,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 950 transitions. [2023-08-03 15:24:25,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:24:25,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 950 transitions. [2023-08-03 15:24:25,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 237.5) internal successors, (950), 4 states have internal predecessors, (950), 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) [2023-08-03 15:24:25,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 466.0) internal successors, (2330), 5 states have internal predecessors, (2330), 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) [2023-08-03 15:24:25,952 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 466.0) internal successors, (2330), 5 states have internal predecessors, (2330), 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) [2023-08-03 15:24:25,952 INFO L175 Difference]: Start difference. First operand has 75 places, 80 transitions, 268 flow. Second operand 4 states and 950 transitions. [2023-08-03 15:24:25,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 130 transitions, 654 flow [2023-08-03 15:24:25,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 130 transitions, 654 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 15:24:25,957 INFO L231 Difference]: Finished difference. Result has 80 places, 81 transitions, 294 flow [2023-08-03 15:24:25,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=466, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=294, PETRI_PLACES=80, PETRI_TRANSITIONS=81} [2023-08-03 15:24:25,958 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 13 predicate places. [2023-08-03 15:24:25,958 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 81 transitions, 294 flow [2023-08-03 15:24:25,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 215.2) internal successors, (1076), 5 states have internal predecessors, (1076), 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) [2023-08-03 15:24:25,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:24:25,959 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 15:24:25,966 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-03 15:24:26,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:24:26,166 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-03 15:24:26,166 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:24:26,166 INFO L85 PathProgramCache]: Analyzing trace with hash -147922955, now seen corresponding path program 1 times [2023-08-03 15:24:26,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:24:26,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957809352] [2023-08-03 15:24:26,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:24:26,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:24:26,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:24:26,238 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 15:24:26,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:24:26,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957809352] [2023-08-03 15:24:26,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957809352] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 15:24:26,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771399197] [2023-08-03 15:24:26,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:24:26,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:24:26,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:24:26,240 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 15:24:26,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-03 15:24:26,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:24:26,313 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 15:24:26,315 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 15:24:26,523 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 15:24:26,523 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 15:24:26,537 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 15:24:26,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771399197] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-03 15:24:26,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-03 15:24:26,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 5 [2023-08-03 15:24:26,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691398040] [2023-08-03 15:24:26,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:24:26,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 15:24:26,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:24:26,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 15:24:26,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 15:24:26,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 466 [2023-08-03 15:24:26,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 81 transitions, 294 flow. Second operand has 5 states, 5 states have (on average 214.6) internal successors, (1073), 5 states have internal predecessors, (1073), 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) [2023-08-03 15:24:26,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:24:26,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 466 [2023-08-03 15:24:26,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:24:27,359 INFO L124 PetriNetUnfolderBase]: 10096/17054 cut-off events. [2023-08-03 15:24:27,359 INFO L125 PetriNetUnfolderBase]: For 6448/6448 co-relation queries the response was YES. [2023-08-03 15:24:27,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39092 conditions, 17054 events. 10096/17054 cut-off events. For 6448/6448 co-relation queries the response was YES. Maximal size of possible extension queue 703. Compared 130565 event pairs, 668 based on Foata normal form. 281/16128 useless extension candidates. Maximal degree in co-relation 16867. Up to 14922 conditions per place. [2023-08-03 15:24:27,421 INFO L140 encePairwiseOnDemand]: 463/466 looper letters, 110 selfloop transitions, 3 changer transitions 0/127 dead transitions. [2023-08-03 15:24:27,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 127 transitions, 650 flow [2023-08-03 15:24:27,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 15:24:27,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 15:24:27,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1162 transitions. [2023-08-03 15:24:27,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49871244635193135 [2023-08-03 15:24:27,423 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1162 transitions. [2023-08-03 15:24:27,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1162 transitions. [2023-08-03 15:24:27,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:24:27,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1162 transitions. [2023-08-03 15:24:27,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 232.4) internal successors, (1162), 5 states have internal predecessors, (1162), 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) [2023-08-03 15:24:27,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 466.0) internal successors, (2796), 6 states have internal predecessors, (2796), 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) [2023-08-03 15:24:27,430 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 466.0) internal successors, (2796), 6 states have internal predecessors, (2796), 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) [2023-08-03 15:24:27,430 INFO L175 Difference]: Start difference. First operand has 80 places, 81 transitions, 294 flow. Second operand 5 states and 1162 transitions. [2023-08-03 15:24:27,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 127 transitions, 650 flow [2023-08-03 15:24:27,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 127 transitions, 640 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-08-03 15:24:27,436 INFO L231 Difference]: Finished difference. Result has 79 places, 78 transitions, 266 flow [2023-08-03 15:24:27,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=466, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=266, PETRI_PLACES=79, PETRI_TRANSITIONS=78} [2023-08-03 15:24:27,438 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 12 predicate places. [2023-08-03 15:24:27,438 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 78 transitions, 266 flow [2023-08-03 15:24:27,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 214.6) internal successors, (1073), 5 states have internal predecessors, (1073), 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) [2023-08-03 15:24:27,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:24:27,438 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:24:27,444 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-03 15:24:27,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-08-03 15:24:27,644 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-03 15:24:27,645 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:24:27,645 INFO L85 PathProgramCache]: Analyzing trace with hash -419827230, now seen corresponding path program 1 times [2023-08-03 15:24:27,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:24:27,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729267691] [2023-08-03 15:24:27,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:24:27,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:24:27,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:24:27,984 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 15:24:27,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:24:27,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729267691] [2023-08-03 15:24:27,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729267691] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 15:24:27,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339453510] [2023-08-03 15:24:27,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:24:27,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:24:27,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:24:27,987 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 15:24:27,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-03 15:24:28,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:24:28,050 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-03 15:24:28,051 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 15:24:28,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 15:24:28,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 15:24:28,384 INFO L322 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2023-08-03 15:24:28,388 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 38 [2023-08-03 15:24:28,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 15:24:28,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 15:24:28,485 INFO L322 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2023-08-03 15:24:28,486 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 38 [2023-08-03 15:24:28,803 INFO L322 Elim1Store]: treesize reduction 56, result has 27.3 percent of original size [2023-08-03 15:24:28,803 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 382 treesize of output 309 [2023-08-03 15:24:29,558 INFO L322 Elim1Store]: treesize reduction 56, result has 27.3 percent of original size [2023-08-03 15:24:29,558 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 382 treesize of output 309 [2023-08-03 15:24:30,516 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 15:24:30,516 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 15:24:30,531 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_152 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_152) |c_ULTIMATE.start_main_~d~0#1.base|) |c_ULTIMATE.start_main_~d~0#1.offset|) 0)) is different from false [2023-08-03 15:24:30,541 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 5 not checked. [2023-08-03 15:24:30,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339453510] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 15:24:30,541 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 15:24:30,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2023-08-03 15:24:30,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622832827] [2023-08-03 15:24:30,541 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 15:24:30,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-03 15:24:30,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:24:30,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-03 15:24:30,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=23, Unknown=1, NotChecked=10, Total=56 [2023-08-03 15:24:30,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 466 [2023-08-03 15:24:30,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 78 transitions, 266 flow. Second operand has 8 states, 8 states have (on average 175.75) internal successors, (1406), 8 states have internal predecessors, (1406), 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) [2023-08-03 15:24:30,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:24:30,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 466 [2023-08-03 15:24:30,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:24:31,593 INFO L124 PetriNetUnfolderBase]: 11858/19525 cut-off events. [2023-08-03 15:24:31,594 INFO L125 PetriNetUnfolderBase]: For 7870/7878 co-relation queries the response was YES. [2023-08-03 15:24:31,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44971 conditions, 19525 events. 11858/19525 cut-off events. For 7870/7878 co-relation queries the response was YES. Maximal size of possible extension queue 868. Compared 146365 event pairs, 4038 based on Foata normal form. 6/18290 useless extension candidates. Maximal degree in co-relation 20420. Up to 13047 conditions per place. [2023-08-03 15:24:31,650 INFO L140 encePairwiseOnDemand]: 457/466 looper letters, 114 selfloop transitions, 10 changer transitions 25/163 dead transitions. [2023-08-03 15:24:31,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 163 transitions, 814 flow [2023-08-03 15:24:31,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 15:24:31,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 15:24:31,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 999 transitions. [2023-08-03 15:24:31,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42875536480686693 [2023-08-03 15:24:31,653 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 999 transitions. [2023-08-03 15:24:31,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 999 transitions. [2023-08-03 15:24:31,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:24:31,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 999 transitions. [2023-08-03 15:24:31,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 199.8) internal successors, (999), 5 states have internal predecessors, (999), 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) [2023-08-03 15:24:31,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 466.0) internal successors, (2796), 6 states have internal predecessors, (2796), 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) [2023-08-03 15:24:31,657 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 466.0) internal successors, (2796), 6 states have internal predecessors, (2796), 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) [2023-08-03 15:24:31,657 INFO L175 Difference]: Start difference. First operand has 79 places, 78 transitions, 266 flow. Second operand 5 states and 999 transitions. [2023-08-03 15:24:31,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 163 transitions, 814 flow [2023-08-03 15:24:31,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 163 transitions, 806 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 15:24:31,663 INFO L231 Difference]: Finished difference. Result has 83 places, 81 transitions, 324 flow [2023-08-03 15:24:31,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=466, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=324, PETRI_PLACES=83, PETRI_TRANSITIONS=81} [2023-08-03 15:24:31,663 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 16 predicate places. [2023-08-03 15:24:31,664 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 81 transitions, 324 flow [2023-08-03 15:24:31,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 175.75) internal successors, (1406), 8 states have internal predecessors, (1406), 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) [2023-08-03 15:24:31,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:24:31,664 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:24:31,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-03 15:24:31,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:24:31,868 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-03 15:24:31,868 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:24:31,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1973066006, now seen corresponding path program 1 times [2023-08-03 15:24:31,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:24:31,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350743815] [2023-08-03 15:24:31,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:24:31,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:24:31,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:24:31,918 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 15:24:31,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:24:31,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350743815] [2023-08-03 15:24:31,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350743815] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:24:31,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:24:31,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 15:24:31,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199361506] [2023-08-03 15:24:31,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:24:31,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 15:24:31,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:24:31,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 15:24:31,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 15:24:31,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 466 [2023-08-03 15:24:31,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 81 transitions, 324 flow. Second operand has 3 states, 3 states have (on average 205.33333333333334) internal successors, (616), 3 states have internal predecessors, (616), 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) [2023-08-03 15:24:31,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:24:31,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 466 [2023-08-03 15:24:31,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:24:33,205 INFO L124 PetriNetUnfolderBase]: 14097/24592 cut-off events. [2023-08-03 15:24:33,205 INFO L125 PetriNetUnfolderBase]: For 14371/14371 co-relation queries the response was YES. [2023-08-03 15:24:33,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59110 conditions, 24592 events. 14097/24592 cut-off events. For 14371/14371 co-relation queries the response was YES. Maximal size of possible extension queue 1262. Compared 210702 event pairs, 4633 based on Foata normal form. 265/23464 useless extension candidates. Maximal degree in co-relation 43813. Up to 15008 conditions per place. [2023-08-03 15:24:33,295 INFO L140 encePairwiseOnDemand]: 452/466 looper letters, 114 selfloop transitions, 14 changer transitions 2/144 dead transitions. [2023-08-03 15:24:33,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 144 transitions, 858 flow [2023-08-03 15:24:33,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 15:24:33,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 15:24:33,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 705 transitions. [2023-08-03 15:24:33,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5042918454935622 [2023-08-03 15:24:33,297 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 705 transitions. [2023-08-03 15:24:33,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 705 transitions. [2023-08-03 15:24:33,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:24:33,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 705 transitions. [2023-08-03 15:24:33,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 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) [2023-08-03 15:24:33,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 466.0) internal successors, (1864), 4 states have internal predecessors, (1864), 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) [2023-08-03 15:24:33,300 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 466.0) internal successors, (1864), 4 states have internal predecessors, (1864), 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) [2023-08-03 15:24:33,300 INFO L175 Difference]: Start difference. First operand has 83 places, 81 transitions, 324 flow. Second operand 3 states and 705 transitions. [2023-08-03 15:24:33,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 144 transitions, 858 flow [2023-08-03 15:24:33,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 144 transitions, 849 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 15:24:33,315 INFO L231 Difference]: Finished difference. Result has 85 places, 93 transitions, 409 flow [2023-08-03 15:24:33,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=466, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=409, PETRI_PLACES=85, PETRI_TRANSITIONS=93} [2023-08-03 15:24:33,316 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 18 predicate places. [2023-08-03 15:24:33,316 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 93 transitions, 409 flow [2023-08-03 15:24:33,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 205.33333333333334) internal successors, (616), 3 states have internal predecessors, (616), 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) [2023-08-03 15:24:33,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:24:33,316 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:24:33,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-03 15:24:33,316 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-03 15:24:33,317 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:24:33,317 INFO L85 PathProgramCache]: Analyzing trace with hash 470397836, now seen corresponding path program 1 times [2023-08-03 15:24:33,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:24:33,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567173778] [2023-08-03 15:24:33,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:24:33,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:24:33,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:24:33,442 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 15:24:33,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:24:33,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567173778] [2023-08-03 15:24:33,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567173778] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:24:33,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:24:33,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 15:24:33,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755429725] [2023-08-03 15:24:33,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:24:33,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 15:24:33,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:24:33,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 15:24:33,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-03 15:24:33,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 466 [2023-08-03 15:24:33,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 93 transitions, 409 flow. Second operand has 4 states, 4 states have (on average 194.75) internal successors, (779), 4 states have internal predecessors, (779), 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) [2023-08-03 15:24:33,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:24:33,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 466 [2023-08-03 15:24:33,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:24:34,485 INFO L124 PetriNetUnfolderBase]: 8745/17061 cut-off events. [2023-08-03 15:24:34,485 INFO L125 PetriNetUnfolderBase]: For 11194/11247 co-relation queries the response was YES. [2023-08-03 15:24:34,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47432 conditions, 17061 events. 8745/17061 cut-off events. For 11194/11247 co-relation queries the response was YES. Maximal size of possible extension queue 784. Compared 151241 event pairs, 1250 based on Foata normal form. 1612/17611 useless extension candidates. Maximal degree in co-relation 40791. Up to 5476 conditions per place. [2023-08-03 15:24:34,540 INFO L140 encePairwiseOnDemand]: 443/466 looper letters, 196 selfloop transitions, 66 changer transitions 25/295 dead transitions. [2023-08-03 15:24:34,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 295 transitions, 1928 flow [2023-08-03 15:24:34,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 15:24:34,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 15:24:34,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1179 transitions. [2023-08-03 15:24:34,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5060085836909871 [2023-08-03 15:24:34,543 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1179 transitions. [2023-08-03 15:24:34,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1179 transitions. [2023-08-03 15:24:34,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:24:34,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1179 transitions. [2023-08-03 15:24:34,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 235.8) internal successors, (1179), 5 states have internal predecessors, (1179), 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) [2023-08-03 15:24:34,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 466.0) internal successors, (2796), 6 states have internal predecessors, (2796), 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) [2023-08-03 15:24:34,548 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 466.0) internal successors, (2796), 6 states have internal predecessors, (2796), 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) [2023-08-03 15:24:34,548 INFO L175 Difference]: Start difference. First operand has 85 places, 93 transitions, 409 flow. Second operand 5 states and 1179 transitions. [2023-08-03 15:24:34,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 295 transitions, 1928 flow [2023-08-03 15:24:34,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 295 transitions, 1898 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 15:24:34,568 INFO L231 Difference]: Finished difference. Result has 90 places, 141 transitions, 799 flow [2023-08-03 15:24:34,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=466, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=799, PETRI_PLACES=90, PETRI_TRANSITIONS=141} [2023-08-03 15:24:34,568 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 23 predicate places. [2023-08-03 15:24:34,568 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 141 transitions, 799 flow [2023-08-03 15:24:34,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 194.75) internal successors, (779), 4 states have internal predecessors, (779), 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) [2023-08-03 15:24:34,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:24:34,569 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:24:34,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-03 15:24:34,569 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-03 15:24:34,569 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:24:34,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1455571923, now seen corresponding path program 1 times [2023-08-03 15:24:34,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:24:34,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819987261] [2023-08-03 15:24:34,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:24:34,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:24:34,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 15:24:34,587 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 15:24:34,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 15:24:34,601 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 15:24:34,601 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 15:24:34,601 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-08-03 15:24:34,601 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-08-03 15:24:34,601 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-08-03 15:24:34,601 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2023-08-03 15:24:34,601 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-08-03 15:24:34,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-03 15:24:34,601 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:24:34,604 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 15:24:34,604 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 15:24:34,631 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 03:24:34 BasicIcfg [2023-08-03 15:24:34,631 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 15:24:34,632 INFO L158 Benchmark]: Toolchain (without parser) took 25867.61ms. Allocated memory was 350.2MB in the beginning and 1.7GB in the end (delta: 1.3GB). Free memory was 303.0MB in the beginning and 752.3MB in the end (delta: -449.3MB). Peak memory consumption was 887.9MB. Max. memory is 16.0GB. [2023-08-03 15:24:34,632 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 350.2MB. Free memory was 307.5MB in the beginning and 307.3MB in the end (delta: 161.0kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 15:24:34,632 INFO L158 Benchmark]: CACSL2BoogieTranslator took 405.50ms. Allocated memory is still 350.2MB. Free memory was 302.6MB in the beginning and 273.7MB in the end (delta: 28.9MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. [2023-08-03 15:24:34,632 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.06ms. Allocated memory is still 350.2MB. Free memory was 273.3MB in the beginning and 270.7MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 15:24:34,632 INFO L158 Benchmark]: Boogie Preprocessor took 20.27ms. Allocated memory is still 350.2MB. Free memory was 270.7MB in the beginning and 268.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 15:24:34,633 INFO L158 Benchmark]: RCFGBuilder took 408.41ms. Allocated memory is still 350.2MB. Free memory was 268.7MB in the beginning and 248.9MB in the end (delta: 19.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-03 15:24:34,633 INFO L158 Benchmark]: TraceAbstraction took 24994.72ms. Allocated memory was 350.2MB in the beginning and 1.7GB in the end (delta: 1.3GB). Free memory was 248.5MB in the beginning and 752.3MB in the end (delta: -503.8MB). Peak memory consumption was 835.5MB. Max. memory is 16.0GB. [2023-08-03 15:24:34,634 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 350.2MB. Free memory was 307.5MB in the beginning and 307.3MB in the end (delta: 161.0kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 405.50ms. Allocated memory is still 350.2MB. Free memory was 302.6MB in the beginning and 273.7MB in the end (delta: 28.9MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 35.06ms. Allocated memory is still 350.2MB. Free memory was 273.3MB in the beginning and 270.7MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 20.27ms. Allocated memory is still 350.2MB. Free memory was 270.7MB in the beginning and 268.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 408.41ms. Allocated memory is still 350.2MB. Free memory was 268.7MB in the beginning and 248.9MB in the end (delta: 19.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 24994.72ms. Allocated memory was 350.2MB in the beginning and 1.7GB in the end (delta: 1.3GB). Free memory was 248.5MB in the beginning and 752.3MB in the end (delta: -503.8MB). Peak memory consumption was 835.5MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 244]: Unsoundness Warning unspecified type, defaulting to int C: short [244] - GenericResultAtLocation [Line: 244]: Unsoundness Warning unspecified type, defaulting to int C: short [244] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.0s, 170 PlacesBefore, 44 PlacesAfterwards, 194 TransitionsBefore, 64 TransitionsAfterwards, 8664 CoEnabledTransitionPairs, 8 FixpointIterations, 60 TrivialSequentialCompositions, 83 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 13 ConcurrentYvCompositions, 4 ChoiceCompositions, 166 TotalNumberOfCompositions, 18412 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 7930, independent: 7563, independent conditional: 0, independent unconditional: 7563, dependent: 367, dependent conditional: 0, dependent unconditional: 367, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4262, independent: 4204, independent conditional: 0, independent unconditional: 4204, dependent: 58, dependent conditional: 0, dependent unconditional: 58, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 7930, independent: 3359, independent conditional: 0, independent unconditional: 3359, dependent: 309, dependent conditional: 0, dependent unconditional: 309, unknown: 4262, unknown conditional: 0, unknown unconditional: 4262] , Statistics on independence cache: Total cache size (in pairs): 222, Positive cache size: 194, Positive conditional cache size: 0, Positive unconditional cache size: 194, Negative cache size: 28, Negative conditional cache size: 0, Negative unconditional cache size: 28, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.9s, 222 PlacesBefore, 67 PlacesAfterwards, 258 TransitionsBefore, 98 TransitionsAfterwards, 25080 CoEnabledTransitionPairs, 8 FixpointIterations, 60 TrivialSequentialCompositions, 115 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 20 ConcurrentYvCompositions, 5 ChoiceCompositions, 206 TotalNumberOfCompositions, 57220 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 22399, independent: 21824, independent conditional: 0, independent unconditional: 21824, dependent: 575, dependent conditional: 0, dependent unconditional: 575, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 11916, independent: 11825, independent conditional: 0, independent unconditional: 11825, dependent: 91, dependent conditional: 0, dependent unconditional: 91, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 22399, independent: 9999, independent conditional: 0, independent unconditional: 9999, dependent: 484, dependent conditional: 0, dependent unconditional: 484, unknown: 11916, unknown conditional: 0, unknown unconditional: 11916] , Statistics on independence cache: Total cache size (in pairs): 521, Positive cache size: 478, Positive conditional cache size: 0, Positive unconditional cache size: 478, Negative cache size: 43, Negative conditional cache size: 0, Negative unconditional cache size: 43, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 999]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1004] 0 pthread_mutex_t __global_lock = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1006-L1010] 0 struct s { int datum; struct q inside; pthread_mutex_t mutex; } A, B; [L1020] 0 int x = __VERIFIER_nondet_int(); [L1021] COND FALSE 0 !(x == 2147483647) [L1024] 0 struct s *s; [L1025] 0 int *d; [L1026] 0 pthread_mutex_t *m; [L1027] COND FALSE 0 !(\read(x)) [L1031] 0 s = &B [L1032] 0 x++ [L1034] 0 m = &s->mutex [L1035] 0 d = &s->datum [L1036] 0 pthread_t t_ids[2]; [L1036] 0 int i=0; VAL [A={4:0}, B={5:0}, __global_lock={3:0}, d={5:0}, i=0, m={5:12}, s={5:0}, t_ids={6:0}, x=1] [L1036] COND TRUE 0 i<2 [L1036] FCALL, FORK 0 pthread_create(&t_ids[i], ((void *)0), t_fun, ((void *)0)) VAL [A={4:0}, B={5:0}, __global_lock={3:0}, d={5:0}, i=0, m={5:12}, pthread_create(&t_ids[i], ((void *)0), t_fun, ((void *)0))=1, s={5:0}, t_ids={6:0}, x=1] [L1036] 0 i++ VAL [A={4:0}, B={5:0}, __global_lock={3:0}, d={5:0}, i=1, m={5:12}, s={5:0}, t_ids={6:0}, x=1] [L1036] COND TRUE 0 i<2 [L1036] FCALL, FORK 0 pthread_create(&t_ids[i], ((void *)0), t_fun, ((void *)0)) VAL [A={4:0}, B={5:0}, __global_lock={3:0}, d={5:0}, i=1, m={5:12}, pthread_create(&t_ids[i], ((void *)0), t_fun, ((void *)0))=2, s={5:0}, t_ids={6:0}, x=1] [L1036] 0 i++ VAL [A={4:0}, B={5:0}, __global_lock={3:0}, d={5:0}, i=2, m={5:12}, s={5:0}, t_ids={6:0}, x=1] [L1036] COND FALSE 0 !(i<2) [L1038] COND TRUE 0 __VERIFIER_nondet_int() [L1038] EXPR 0 \read(*d) VAL [A={4:0}, B={5:0}, \read(*d)=0, __global_lock={3:0}, d={5:0}, i=2, m={5:12}, s={5:0}, t_ids={6:0}, x=1] [L1038] 0 (*d)++ [L1013] COND FALSE 1 !(__VERIFIER_nondet_int()) [L1013] EXPR 1 B.datum [L1013] CALL 1 __VERIFIER_assert((B.datum) == 0) [L999] COND TRUE 1 !(cond) [L999] 1 reach_error() VAL [A={4:0}, B={5:0}, \old(cond)=0, __global_lock={3:0}, cond=0] - UnprovableResult [Line: 999]: 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: 1036]: 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 3 procedures, 219 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.6s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 33 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 22 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 74 IncrementalHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 1 mSDtfsCounter, 74 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=133occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 265 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: 18.3s, OverallIterations: 8, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 7.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 798 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 620 mSDsluCounter, 25 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 169 IncrementalHoareTripleChecker+Unchecked, 14 mSDsCounter, 125 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1670 IncrementalHoareTripleChecker+Invalid, 1964 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 125 mSolverCounterUnsat, 11 mSDtfsCounter, 1670 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 86 GetRequests, 62 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=799occurred in iteration=7, InterpolantAutomatonStates: 29, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 133 NumberOfCodeBlocks, 133 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 133 ConstructedInterpolants, 5 QuantifiedInterpolants, 5019 SizeOfPredicates, 64 NumberOfNonLiveVariables, 196 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 13 InterpolantComputations, 5 PerfectInterpolantSequences, 21/49 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! [2023-08-03 15:24:34,650 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...