/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.pointer.base.address.is.valid.at.dereference ASSERTandASSUME --cacsl2boogietranslator.pointer.to.allocated.memory.at.dereference ASSERTandASSUME --cacsl2boogietranslator.check.array.bounds.for.arrays.that.are.off.heap ASSERTandASSUME --cacsl2boogietranslator.check.if.freed.pointer.was.valid true --cacsl2boogietranslator.adapt.memory.model.on.pointer.casts.if.necessary true -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_47-refine-protected2_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 15:33:51,334 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 15:33:51,419 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-26 15:33:51,424 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 15:33:51,425 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 15:33:51,455 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 15:33:51,455 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 15:33:51,456 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 15:33:51,456 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 15:33:51,460 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 15:33:51,460 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 15:33:51,460 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 15:33:51,460 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 15:33:51,462 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 15:33:51,462 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 15:33:51,462 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 15:33:51,462 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 15:33:51,462 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 15:33:51,463 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 15:33:51,463 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 15:33:51,463 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 15:33:51,464 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 15:33:51,464 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 15:33:51,465 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 15:33:51,465 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 15:33:51,465 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 15:33:51,465 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 15:33:51,465 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 15:33:51,465 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 15:33:51,466 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 15:33:51,467 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 15:33:51,467 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 15:33:51,467 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 15:33:51,467 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 15:33:51,467 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 15:33:51,467 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-08-26 15:33:51,770 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 15:33:51,789 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 15:33:51,792 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 15:33:51,793 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 15:33:51,793 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 15:33:51,794 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_47-refine-protected2_true.i [2023-08-26 15:33:52,944 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 15:33:53,165 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 15:33:53,166 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_47-refine-protected2_true.i [2023-08-26 15:33:53,177 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d243ac979/ec5109b577474ef9baf0b5b1f0afa0d4/FLAG3dac71f7f [2023-08-26 15:33:53,191 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d243ac979/ec5109b577474ef9baf0b5b1f0afa0d4 [2023-08-26 15:33:53,193 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 15:33:53,195 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 15:33:53,195 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 15:33:53,196 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 15:33:53,198 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 15:33:53,200 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 03:33:53" (1/1) ... [2023-08-26 15:33:53,201 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13aebc3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:33:53, skipping insertion in model container [2023-08-26 15:33:53,201 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 03:33:53" (1/1) ... [2023-08-26 15:33:53,239 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 15:33:53,565 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 15:33:53,578 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 15:33:53,604 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [231] [2023-08-26 15:33:53,606 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-26 15:33:53,624 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 15:33:53,661 INFO L206 MainTranslator]: Completed translation [2023-08-26 15:33:53,662 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:33:53 WrapperNode [2023-08-26 15:33:53,662 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 15:33:53,663 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 15:33:53,663 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 15:33:53,664 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 15:33:53,669 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:33:53" (1/1) ... [2023-08-26 15:33:53,699 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:33:53" (1/1) ... [2023-08-26 15:33:53,719 INFO L138 Inliner]: procedures = 162, calls = 22, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 52 [2023-08-26 15:33:53,720 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 15:33:53,721 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 15:33:53,721 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 15:33:53,721 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 15:33:53,728 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:33:53" (1/1) ... [2023-08-26 15:33:53,728 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:33:53" (1/1) ... [2023-08-26 15:33:53,733 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:33:53" (1/1) ... [2023-08-26 15:33:53,735 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:33:53" (1/1) ... [2023-08-26 15:33:53,749 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:33:53" (1/1) ... [2023-08-26 15:33:53,750 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:33:53" (1/1) ... [2023-08-26 15:33:53,751 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:33:53" (1/1) ... [2023-08-26 15:33:53,752 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:33:53" (1/1) ... [2023-08-26 15:33:53,754 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 15:33:53,755 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 15:33:53,755 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 15:33:53,755 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 15:33:53,756 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:33:53" (1/1) ... [2023-08-26 15:33:53,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 15:33:53,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 15:33:53,786 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) [2023-08-26 15:33:53,813 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 [2023-08-26 15:33:53,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 15:33:53,825 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 15:33:53,826 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 15:33:53,826 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 15:33:53,826 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-26 15:33:53,826 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-26 15:33:53,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 15:33:53,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 15:33:53,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 15:33:53,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 15:33:53,828 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 15:33:53,967 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 15:33:53,969 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 15:33:54,117 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 15:33:54,122 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 15:33:54,122 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-26 15:33:54,123 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 03:33:54 BoogieIcfgContainer [2023-08-26 15:33:54,124 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 15:33:54,125 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 15:33:54,126 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 15:33:54,128 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 15:33:54,128 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 03:33:53" (1/3) ... [2023-08-26 15:33:54,129 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@413a13b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 03:33:54, skipping insertion in model container [2023-08-26 15:33:54,129 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:33:53" (2/3) ... [2023-08-26 15:33:54,129 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@413a13b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 03:33:54, skipping insertion in model container [2023-08-26 15:33:54,130 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 03:33:54" (3/3) ... [2023-08-26 15:33:54,131 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_47-refine-protected2_true.i [2023-08-26 15:33:54,145 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 15:33:54,146 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-08-26 15:33:54,146 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 15:33:54,179 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-26 15:33:54,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 69 places, 70 transitions, 145 flow [2023-08-26 15:33:54,246 INFO L124 PetriNetUnfolderBase]: 5/69 cut-off events. [2023-08-26 15:33:54,247 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 15:33:54,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 69 events. 5/69 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 87 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2023-08-26 15:33:54,250 INFO L82 GeneralOperation]: Start removeDead. Operand has 69 places, 70 transitions, 145 flow [2023-08-26 15:33:54,253 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 51 transitions, 105 flow [2023-08-26 15:33:54,256 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:33:54,263 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 55 places, 51 transitions, 105 flow [2023-08-26 15:33:54,265 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 55 places, 51 transitions, 105 flow [2023-08-26 15:33:54,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 51 transitions, 105 flow [2023-08-26 15:33:54,295 INFO L124 PetriNetUnfolderBase]: 0/51 cut-off events. [2023-08-26 15:33:54,295 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 15:33:54,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 51 events. 0/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 38 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-08-26 15:33:54,296 INFO L119 LiptonReduction]: Number of co-enabled transitions 280 [2023-08-26 15:33:56,046 INFO L134 LiptonReduction]: Checked pairs total: 484 [2023-08-26 15:33:56,046 INFO L136 LiptonReduction]: Total number of compositions: 47 [2023-08-26 15:33:56,059 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 15:33:56,065 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1fa9bf7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:33:56,065 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-26 15:33:56,066 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:33:56,066 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-26 15:33:56,066 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 15:33:56,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:33:56,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-26 15:33:56,067 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 2 more)] === [2023-08-26 15:33:56,072 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:33:56,072 INFO L85 PathProgramCache]: Analyzing trace with hash 247, now seen corresponding path program 1 times [2023-08-26 15:33:56,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:33:56,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349704889] [2023-08-26 15:33:56,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:33:56,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:33:56,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 15:33:56,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 15:33:56,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 15:33:56,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349704889] [2023-08-26 15:33:56,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349704889] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 15:33:56,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 15:33:56,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-26 15:33:56,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457067329] [2023-08-26 15:33:56,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 15:33:56,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 15:33:56,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 15:33:56,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 15:33:56,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 15:33:56,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 117 [2023-08-26 15:33:56,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 12 transitions, 27 flow. Second operand has 2 states, 2 states have (on average 63.5) internal successors, (127), 2 states have internal predecessors, (127), 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) [2023-08-26 15:33:56,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 15:33:56,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 117 [2023-08-26 15:33:56,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 15:33:56,267 INFO L124 PetriNetUnfolderBase]: 9/30 cut-off events. [2023-08-26 15:33:56,267 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 15:33:56,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 30 events. 9/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 82 event pairs, 9 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 52. Up to 27 conditions per place. [2023-08-26 15:33:56,269 INFO L140 encePairwiseOnDemand]: 115/117 looper letters, 8 selfloop transitions, 0 changer transitions 0/10 dead transitions. [2023-08-26 15:33:56,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 15 places, 10 transitions, 39 flow [2023-08-26 15:33:56,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 15:33:56,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 15:33:56,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 136 transitions. [2023-08-26 15:33:56,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5811965811965812 [2023-08-26 15:33:56,283 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 136 transitions. [2023-08-26 15:33:56,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 136 transitions. [2023-08-26 15:33:56,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 15:33:56,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 136 transitions. [2023-08-26 15:33:56,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 68.0) internal successors, (136), 2 states have internal predecessors, (136), 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) [2023-08-26 15:33:56,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 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) [2023-08-26 15:33:56,298 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 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) [2023-08-26 15:33:56,300 INFO L175 Difference]: Start difference. First operand has 16 places, 12 transitions, 27 flow. Second operand 2 states and 136 transitions. [2023-08-26 15:33:56,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 15 places, 10 transitions, 39 flow [2023-08-26 15:33:56,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 10 transitions, 38 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 15:33:56,305 INFO L231 Difference]: Finished difference. Result has 14 places, 10 transitions, 22 flow [2023-08-26 15:33:56,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=22, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=22, PETRI_PLACES=14, PETRI_TRANSITIONS=10} [2023-08-26 15:33:56,313 INFO L281 CegarLoopForPetriNet]: 16 programPoint places, -2 predicate places. [2023-08-26 15:33:56,314 INFO L495 AbstractCegarLoop]: Abstraction has has 14 places, 10 transitions, 22 flow [2023-08-26 15:33:56,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 63.5) internal successors, (127), 2 states have internal predecessors, (127), 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) [2023-08-26 15:33:56,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:33:56,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 15:33:56,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 15:33:56,315 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 2 more)] === [2023-08-26 15:33:56,317 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:33:56,317 INFO L85 PathProgramCache]: Analyzing trace with hash 234290587, now seen corresponding path program 1 times [2023-08-26 15:33:56,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:33:56,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386824149] [2023-08-26 15:33:56,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:33:56,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:33:56,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 15:33:56,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 15:33:56,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 15:33:56,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386824149] [2023-08-26 15:33:56,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386824149] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 15:33:56,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 15:33:56,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 15:33:56,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326596660] [2023-08-26 15:33:56,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 15:33:56,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 15:33:56,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 15:33:56,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 15:33:56,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 15:33:56,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 117 [2023-08-26 15:33:56,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 10 transitions, 22 flow. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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) [2023-08-26 15:33:56,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 15:33:56,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 117 [2023-08-26 15:33:56,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 15:33:56,478 INFO L124 PetriNetUnfolderBase]: 8/29 cut-off events. [2023-08-26 15:33:56,478 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 15:33:56,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 29 events. 8/29 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 61 event pairs, 4 based on Foata normal form. 4/31 useless extension candidates. Maximal degree in co-relation 60. Up to 15 conditions per place. [2023-08-26 15:33:56,478 INFO L140 encePairwiseOnDemand]: 111/117 looper letters, 9 selfloop transitions, 3 changer transitions 1/13 dead transitions. [2023-08-26 15:33:56,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 13 transitions, 54 flow [2023-08-26 15:33:56,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 15:33:56,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 15:33:56,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 186 transitions. [2023-08-26 15:33:56,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5299145299145299 [2023-08-26 15:33:56,485 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 186 transitions. [2023-08-26 15:33:56,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 186 transitions. [2023-08-26 15:33:56,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 15:33:56,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 186 transitions. [2023-08-26 15:33:56,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 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) [2023-08-26 15:33:56,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 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) [2023-08-26 15:33:56,491 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 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) [2023-08-26 15:33:56,491 INFO L175 Difference]: Start difference. First operand has 14 places, 10 transitions, 22 flow. Second operand 3 states and 186 transitions. [2023-08-26 15:33:56,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 13 transitions, 54 flow [2023-08-26 15:33:56,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 13 transitions, 54 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 15:33:56,492 INFO L231 Difference]: Finished difference. Result has 18 places, 10 transitions, 40 flow [2023-08-26 15:33:56,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=22, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=40, PETRI_PLACES=18, PETRI_TRANSITIONS=10} [2023-08-26 15:33:56,493 INFO L281 CegarLoopForPetriNet]: 16 programPoint places, 2 predicate places. [2023-08-26 15:33:56,493 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 10 transitions, 40 flow [2023-08-26 15:33:56,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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) [2023-08-26 15:33:56,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:33:56,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:33:56,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 15:33:56,498 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 2 more)] === [2023-08-26 15:33:56,500 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:33:56,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1801783489, now seen corresponding path program 1 times [2023-08-26 15:33:56,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:33:56,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882848340] [2023-08-26 15:33:56,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:33:56,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:33:56,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 15:33:56,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 15:33:56,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 15:33:56,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882848340] [2023-08-26 15:33:56,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882848340] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 15:33:56,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 15:33:56,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 15:33:56,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83334907] [2023-08-26 15:33:56,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 15:33:56,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 15:33:56,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 15:33:56,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 15:33:56,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 15:33:56,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 117 [2023-08-26 15:33:56,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 10 transitions, 40 flow. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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) [2023-08-26 15:33:56,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 15:33:56,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 117 [2023-08-26 15:33:56,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 15:33:56,700 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2023-08-26 15:33:56,700 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 15:33:56,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 10 events. 0/10 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 4 event pairs, 0 based on Foata normal form. 3/13 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2023-08-26 15:33:56,701 INFO L140 encePairwiseOnDemand]: 114/117 looper letters, 4 selfloop transitions, 3 changer transitions 1/9 dead transitions. [2023-08-26 15:33:56,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 9 transitions, 50 flow [2023-08-26 15:33:56,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 15:33:56,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 15:33:56,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 168 transitions. [2023-08-26 15:33:56,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47863247863247865 [2023-08-26 15:33:56,704 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 168 transitions. [2023-08-26 15:33:56,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 168 transitions. [2023-08-26 15:33:56,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 15:33:56,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 168 transitions. [2023-08-26 15:33:56,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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) [2023-08-26 15:33:56,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 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) [2023-08-26 15:33:56,707 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 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) [2023-08-26 15:33:56,707 INFO L175 Difference]: Start difference. First operand has 18 places, 10 transitions, 40 flow. Second operand 3 states and 168 transitions. [2023-08-26 15:33:56,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 9 transitions, 50 flow [2023-08-26 15:33:56,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 9 transitions, 44 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 15:33:56,709 INFO L231 Difference]: Finished difference. Result has 17 places, 8 transitions, 32 flow [2023-08-26 15:33:56,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=32, PETRI_PLACES=17, PETRI_TRANSITIONS=8} [2023-08-26 15:33:56,710 INFO L281 CegarLoopForPetriNet]: 16 programPoint places, 1 predicate places. [2023-08-26 15:33:56,713 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 8 transitions, 32 flow [2023-08-26 15:33:56,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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) [2023-08-26 15:33:56,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:33:56,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:33:56,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 15:33:56,714 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 2 more)] === [2023-08-26 15:33:56,714 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:33:56,714 INFO L85 PathProgramCache]: Analyzing trace with hash 14106432, now seen corresponding path program 1 times [2023-08-26 15:33:56,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:33:56,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98542843] [2023-08-26 15:33:56,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:33:56,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:33:56,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 15:33:56,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 15:33:56,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 15:33:56,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98542843] [2023-08-26 15:33:56,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98542843] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 15:33:56,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 15:33:56,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 15:33:56,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652599759] [2023-08-26 15:33:56,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 15:33:56,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 15:33:56,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 15:33:56,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 15:33:56,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 15:33:56,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 117 [2023-08-26 15:33:56,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 8 transitions, 32 flow. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 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) [2023-08-26 15:33:56,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 15:33:56,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 117 [2023-08-26 15:33:56,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 15:33:56,815 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-08-26 15:33:56,815 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 15:33:56,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 8 events. 0/8 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 1 event pairs, 0 based on Foata normal form. 1/9 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2023-08-26 15:33:56,816 INFO L140 encePairwiseOnDemand]: 115/117 looper letters, 0 selfloop transitions, 0 changer transitions 8/8 dead transitions. [2023-08-26 15:33:56,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 8 transitions, 48 flow [2023-08-26 15:33:56,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 15:33:56,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 15:33:56,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 180 transitions. [2023-08-26 15:33:56,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5128205128205128 [2023-08-26 15:33:56,818 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 180 transitions. [2023-08-26 15:33:56,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 180 transitions. [2023-08-26 15:33:56,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 15:33:56,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 180 transitions. [2023-08-26 15:33:56,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 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) [2023-08-26 15:33:56,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 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) [2023-08-26 15:33:56,821 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 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) [2023-08-26 15:33:56,821 INFO L175 Difference]: Start difference. First operand has 17 places, 8 transitions, 32 flow. Second operand 3 states and 180 transitions. [2023-08-26 15:33:56,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 8 transitions, 48 flow [2023-08-26 15:33:56,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 8 transitions, 42 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 15:33:56,821 INFO L231 Difference]: Finished difference. Result has 15 places, 0 transitions, 0 flow [2023-08-26 15:33:56,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=23, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=15, PETRI_TRANSITIONS=0} [2023-08-26 15:33:56,823 INFO L281 CegarLoopForPetriNet]: 16 programPoint places, -1 predicate places. [2023-08-26 15:33:56,823 INFO L495 AbstractCegarLoop]: Abstraction has has 15 places, 0 transitions, 0 flow [2023-08-26 15:33:56,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 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) [2023-08-26 15:33:56,826 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 5 remaining) [2023-08-26 15:33:56,827 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 5 remaining) [2023-08-26 15:33:56,827 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (2 of 5 remaining) [2023-08-26 15:33:56,827 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONASSERT (1 of 5 remaining) [2023-08-26 15:33:56,827 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-08-26 15:33:56,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 15:33:56,827 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-26 15:33:56,832 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 15:33:56,832 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 15:33:56,839 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 03:33:56 BasicIcfg [2023-08-26 15:33:56,839 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 15:33:56,840 INFO L158 Benchmark]: Toolchain (without parser) took 3645.05ms. Allocated memory was 417.3MB in the beginning and 524.3MB in the end (delta: 107.0MB). Free memory was 392.2MB in the beginning and 420.9MB in the end (delta: -28.6MB). Peak memory consumption was 79.8MB. Max. memory is 16.0GB. [2023-08-26 15:33:56,840 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 417.3MB. Free memory is still 393.5MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 15:33:56,840 INFO L158 Benchmark]: CACSL2BoogieTranslator took 467.17ms. Allocated memory is still 417.3MB. Free memory was 391.8MB in the beginning and 373.2MB in the end (delta: 18.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-26 15:33:56,841 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.34ms. Allocated memory is still 417.3MB. Free memory was 373.2MB in the beginning and 371.3MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 15:33:56,841 INFO L158 Benchmark]: Boogie Preprocessor took 33.48ms. Allocated memory is still 417.3MB. Free memory was 371.3MB in the beginning and 369.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 15:33:56,841 INFO L158 Benchmark]: RCFGBuilder took 368.92ms. Allocated memory is still 417.3MB. Free memory was 369.9MB in the beginning and 357.6MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-26 15:33:56,845 INFO L158 Benchmark]: TraceAbstraction took 2713.67ms. Allocated memory was 417.3MB in the beginning and 524.3MB in the end (delta: 107.0MB). Free memory was 356.6MB in the beginning and 420.9MB in the end (delta: -64.3MB). Peak memory consumption was 44.2MB. Max. memory is 16.0GB. [2023-08-26 15:33:56,846 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 417.3MB. Free memory is still 393.5MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 467.17ms. Allocated memory is still 417.3MB. Free memory was 391.8MB in the beginning and 373.2MB in the end (delta: 18.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 56.34ms. Allocated memory is still 417.3MB. Free memory was 373.2MB in the beginning and 371.3MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 33.48ms. Allocated memory is still 417.3MB. Free memory was 371.3MB in the beginning and 369.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 368.92ms. Allocated memory is still 417.3MB. Free memory was 369.9MB in the beginning and 357.6MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 2713.67ms. Allocated memory was 417.3MB in the beginning and 524.3MB in the end (delta: 107.0MB). Free memory was 356.6MB in the beginning and 420.9MB in the end (delta: -64.3MB). Peak memory consumption was 44.2MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 231]: Unsoundness Warning unspecified type, defaulting to int C: short [231] - GenericResultAtLocation [Line: 232]: Unsoundness Warning unspecified type, defaulting to int C: short [232] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.8s, 55 PlacesBefore, 16 PlacesAfterwards, 51 TransitionsBefore, 12 TransitionsAfterwards, 280 CoEnabledTransitionPairs, 5 FixpointIterations, 28 TrivialSequentialCompositions, 19 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 47 TotalNumberOfCompositions, 484 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 345, independent: 281, independent conditional: 0, independent unconditional: 281, dependent: 64, dependent conditional: 0, dependent unconditional: 64, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 171, independent: 154, independent conditional: 0, independent unconditional: 154, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 345, independent: 127, independent conditional: 0, independent unconditional: 127, dependent: 47, dependent conditional: 0, dependent unconditional: 47, unknown: 171, unknown conditional: 0, unknown unconditional: 171] , Statistics on independence cache: Total cache size (in pairs): 15, Positive cache size: 9, Positive conditional cache size: 0, Positive unconditional cache size: 9, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 18]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 18]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 75 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: 2.6s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 45 IncrementalHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 1 mSDtfsCounter, 45 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=2, InterpolantAutomatonStates: 11, 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, 0.3s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 32 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-26 15:33:56,871 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...