/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/list-simple/dll2n_prepend_unequal.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 04:42:31,908 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 04:42:31,963 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 04:42:31,966 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 04:42:31,966 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 04:42:31,979 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 04:42:31,980 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 04:42:31,980 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 04:42:31,980 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 04:42:31,981 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 04:42:31,981 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 04:42:31,981 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 04:42:31,981 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 04:42:31,982 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 04:42:31,982 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 04:42:31,982 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 04:42:31,982 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 04:42:31,984 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 04:42:31,984 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 04:42:31,984 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 04:42:31,985 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 04:42:31,988 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 04:42:31,988 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 04:42:31,988 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 04:42:31,988 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 04:42:31,988 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 04:42:31,989 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 04:42:31,989 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 04:42:31,989 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 04:42:31,989 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 04:42:31,989 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 04:42:31,989 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 04:42:31,989 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 04:42:31,990 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 04:42:31,990 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 04:42:31,990 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 04:42:31,990 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 04:42:31,990 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 04:42:31,990 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 04:42:31,990 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 04:42:31,991 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 04:42:31,991 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 04:42:31,991 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 04:42:31,991 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 04:42:32,189 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 04:42:32,202 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 04:42:32,204 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 04:42:32,205 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 04:42:32,205 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 04:42:32,206 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2n_prepend_unequal.i [2023-12-16 04:42:33,108 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 04:42:33,293 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 04:42:33,293 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/dll2n_prepend_unequal.i [2023-12-16 04:42:33,302 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e0c98b0d/ac45c2b44d7547bc8f949945043d60e2/FLAGfee73e072 [2023-12-16 04:42:33,312 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e0c98b0d/ac45c2b44d7547bc8f949945043d60e2 [2023-12-16 04:42:33,314 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 04:42:33,315 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 04:42:33,315 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 04:42:33,315 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 04:42:33,320 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 04:42:33,321 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:42:33" (1/1) ... [2023-12-16 04:42:33,321 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57713b5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:42:33, skipping insertion in model container [2023-12-16 04:42:33,321 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:42:33" (1/1) ... [2023-12-16 04:42:33,358 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 04:42:33,529 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/list-simple/dll2n_prepend_unequal.i[24450,24463] [2023-12-16 04:42:33,532 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 04:42:33,538 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 04:42:33,567 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/list-simple/dll2n_prepend_unequal.i[24450,24463] [2023-12-16 04:42:33,567 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 04:42:33,587 INFO L206 MainTranslator]: Completed translation [2023-12-16 04:42:33,588 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:42:33 WrapperNode [2023-12-16 04:42:33,588 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 04:42:33,589 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 04:42:33,589 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 04:42:33,589 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 04:42:33,594 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:42:33" (1/1) ... [2023-12-16 04:42:33,602 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:42:33" (1/1) ... [2023-12-16 04:42:33,623 INFO L138 Inliner]: procedures = 127, calls = 40, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 125 [2023-12-16 04:42:33,624 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 04:42:33,624 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 04:42:33,624 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 04:42:33,624 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 04:42:33,632 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:42:33" (1/1) ... [2023-12-16 04:42:33,632 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:42:33" (1/1) ... [2023-12-16 04:42:33,634 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:42:33" (1/1) ... [2023-12-16 04:42:33,646 INFO L175 MemorySlicer]: Split 23 memory accesses to 3 slices as follows [2, 7, 14]. 61 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1, 0]. The 10 writes are split as follows [0, 1, 9]. [2023-12-16 04:42:33,646 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:42:33" (1/1) ... [2023-12-16 04:42:33,646 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:42:33" (1/1) ... [2023-12-16 04:42:33,652 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:42:33" (1/1) ... [2023-12-16 04:42:33,654 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:42:33" (1/1) ... [2023-12-16 04:42:33,655 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:42:33" (1/1) ... [2023-12-16 04:42:33,666 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:42:33" (1/1) ... [2023-12-16 04:42:33,669 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 04:42:33,669 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 04:42:33,669 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 04:42:33,669 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 04:42:33,670 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:42:33" (1/1) ... [2023-12-16 04:42:33,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 04:42:33,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:42:33,706 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 04:42:33,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 04:42:33,732 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2023-12-16 04:42:33,732 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2023-12-16 04:42:33,732 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-16 04:42:33,732 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-16 04:42:33,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-12-16 04:42:33,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-16 04:42:33,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-16 04:42:33,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-12-16 04:42:33,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-16 04:42:33,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 04:42:33,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-16 04:42:33,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-12-16 04:42:33,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-12-16 04:42:33,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-12-16 04:42:33,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-12-16 04:42:33,734 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-12-16 04:42:33,734 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-12-16 04:42:33,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-16 04:42:33,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-12-16 04:42:33,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-12-16 04:42:33,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-12-16 04:42:33,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 04:42:33,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-16 04:42:33,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-16 04:42:33,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 04:42:33,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 04:42:33,840 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 04:42:33,842 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 04:42:33,865 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2023-12-16 04:42:33,979 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 04:42:34,020 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 04:42:34,020 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-12-16 04:42:34,020 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:42:34 BoogieIcfgContainer [2023-12-16 04:42:34,020 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 04:42:34,022 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 04:42:34,022 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 04:42:34,029 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 04:42:34,029 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 04:42:33" (1/3) ... [2023-12-16 04:42:34,029 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70ec9f52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:42:34, skipping insertion in model container [2023-12-16 04:42:34,030 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:42:33" (2/3) ... [2023-12-16 04:42:34,030 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70ec9f52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:42:34, skipping insertion in model container [2023-12-16 04:42:34,030 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:42:34" (3/3) ... [2023-12-16 04:42:34,031 INFO L112 eAbstractionObserver]: Analyzing ICFG dll2n_prepend_unequal.i [2023-12-16 04:42:34,043 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 04:42:34,043 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 04:42:34,074 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 04:42:34,079 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=LoopHeads, 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;@2399de3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 04:42:34,079 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 04:42:34,083 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 23 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:42:34,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-16 04:42:34,088 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:42:34,088 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:42:34,089 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:42:34,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:42:34,092 INFO L85 PathProgramCache]: Analyzing trace with hash 612994908, now seen corresponding path program 1 times [2023-12-16 04:42:34,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:42:34,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416853430] [2023-12-16 04:42:34,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:42:34,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:42:34,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:42:34,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:42:34,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:42:34,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416853430] [2023-12-16 04:42:34,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416853430] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:42:34,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:42:34,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 04:42:34,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985704986] [2023-12-16 04:42:34,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:42:34,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 04:42:34,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:42:34,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 04:42:34,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 04:42:34,319 INFO L87 Difference]: Start difference. First operand has 25 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 23 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2023-12-16 04:42:34,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:42:34,346 INFO L93 Difference]: Finished difference Result 43 states and 63 transitions. [2023-12-16 04:42:34,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 04:42:34,347 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) Word has length 9 [2023-12-16 04:42:34,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:42:34,351 INFO L225 Difference]: With dead ends: 43 [2023-12-16 04:42:34,352 INFO L226 Difference]: Without dead ends: 17 [2023-12-16 04:42:34,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 04:42:34,358 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:42:34,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:42:34,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-12-16 04:42:34,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2023-12-16 04:42:34,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 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) [2023-12-16 04:42:34,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2023-12-16 04:42:34,380 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 22 transitions. Word has length 9 [2023-12-16 04:42:34,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:42:34,381 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 22 transitions. [2023-12-16 04:42:34,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2023-12-16 04:42:34,381 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 22 transitions. [2023-12-16 04:42:34,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-16 04:42:34,382 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:42:34,382 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:42:34,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 04:42:34,383 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:42:34,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:42:34,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1859336911, now seen corresponding path program 1 times [2023-12-16 04:42:34,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:42:34,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135246839] [2023-12-16 04:42:34,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:42:34,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:42:34,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:42:34,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:42:34,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:42:34,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135246839] [2023-12-16 04:42:34,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135246839] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:42:34,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:42:34,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 04:42:34,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6089280] [2023-12-16 04:42:34,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:42:34,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 04:42:34,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:42:34,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 04:42:34,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:42:34,524 INFO L87 Difference]: Start difference. First operand 17 states and 22 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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) [2023-12-16 04:42:34,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:42:34,543 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2023-12-16 04:42:34,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 04:42:34,545 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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) Word has length 9 [2023-12-16 04:42:34,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:42:34,546 INFO L225 Difference]: With dead ends: 33 [2023-12-16 04:42:34,546 INFO L226 Difference]: Without dead ends: 22 [2023-12-16 04:42:34,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:42:34,547 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 5 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:42:34,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 31 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:42:34,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-12-16 04:42:34,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2023-12-16 04:42:34,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 17 states have internal predecessors, (23), 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) [2023-12-16 04:42:34,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 23 transitions. [2023-12-16 04:42:34,550 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 23 transitions. Word has length 9 [2023-12-16 04:42:34,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:42:34,550 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 23 transitions. [2023-12-16 04:42:34,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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) [2023-12-16 04:42:34,551 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 23 transitions. [2023-12-16 04:42:34,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-16 04:42:34,551 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:42:34,551 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:42:34,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 04:42:34,552 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:42:34,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:42:34,552 INFO L85 PathProgramCache]: Analyzing trace with hash -804966833, now seen corresponding path program 1 times [2023-12-16 04:42:34,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:42:34,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606748271] [2023-12-16 04:42:34,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:42:34,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:42:34,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:42:34,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:42:34,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:42:34,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606748271] [2023-12-16 04:42:34,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606748271] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:42:34,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:42:34,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 04:42:34,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017750501] [2023-12-16 04:42:34,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:42:34,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 04:42:34,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:42:34,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 04:42:34,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:42:34,662 INFO L87 Difference]: Start difference. First operand 18 states and 23 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 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) [2023-12-16 04:42:34,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:42:34,693 INFO L93 Difference]: Finished difference Result 38 states and 49 transitions. [2023-12-16 04:42:34,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 04:42:34,694 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 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) Word has length 14 [2023-12-16 04:42:34,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:42:34,695 INFO L225 Difference]: With dead ends: 38 [2023-12-16 04:42:34,695 INFO L226 Difference]: Without dead ends: 22 [2023-12-16 04:42:34,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:42:34,699 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 1 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:42:34,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 30 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:42:34,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-12-16 04:42:34,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2023-12-16 04:42:34,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.3) internal successors, (26), 20 states have internal predecessors, (26), 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) [2023-12-16 04:42:34,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2023-12-16 04:42:34,710 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 14 [2023-12-16 04:42:34,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:42:34,710 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2023-12-16 04:42:34,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 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) [2023-12-16 04:42:34,710 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2023-12-16 04:42:34,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-16 04:42:34,711 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:42:34,711 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:42:34,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 04:42:34,711 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:42:34,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:42:34,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1197993843, now seen corresponding path program 1 times [2023-12-16 04:42:34,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:42:34,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088969432] [2023-12-16 04:42:34,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:42:34,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:42:34,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:42:34,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:42:34,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:42:34,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088969432] [2023-12-16 04:42:34,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088969432] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:42:34,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228768818] [2023-12-16 04:42:34,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:42:34,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:42:34,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:42:34,837 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) [2023-12-16 04:42:34,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 04:42:34,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:42:34,976 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 04:42:34,981 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:42:35,021 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:42:35,021 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:42:35,041 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:42:35,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228768818] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:42:35,044 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:42:35,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-12-16 04:42:35,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947263200] [2023-12-16 04:42:35,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:42:35,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 04:42:35,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:42:35,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 04:42:35,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:42:35,047 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 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) [2023-12-16 04:42:35,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:42:35,087 INFO L93 Difference]: Finished difference Result 34 states and 43 transitions. [2023-12-16 04:42:35,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 04:42:35,089 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 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) Word has length 14 [2023-12-16 04:42:35,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:42:35,089 INFO L225 Difference]: With dead ends: 34 [2023-12-16 04:42:35,090 INFO L226 Difference]: Without dead ends: 23 [2023-12-16 04:42:35,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:42:35,095 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 5 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:42:35,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 57 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:42:35,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-12-16 04:42:35,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-12-16 04:42:35,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 22 states have internal predecessors, (28), 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) [2023-12-16 04:42:35,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2023-12-16 04:42:35,101 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 14 [2023-12-16 04:42:35,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:42:35,101 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2023-12-16 04:42:35,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 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) [2023-12-16 04:42:35,101 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2023-12-16 04:42:35,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-16 04:42:35,102 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:42:35,102 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:42:35,108 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-16 04:42:35,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:42:35,308 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:42:35,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:42:35,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1120518319, now seen corresponding path program 1 times [2023-12-16 04:42:35,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:42:35,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425893687] [2023-12-16 04:42:35,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:42:35,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:42:35,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:42:35,929 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-16 04:42:35,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:42:35,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425893687] [2023-12-16 04:42:35,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425893687] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:42:35,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:42:35,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 04:42:35,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046749097] [2023-12-16 04:42:35,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:42:35,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 04:42:35,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:42:35,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 04:42:35,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:42:35,933 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 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) [2023-12-16 04:42:36,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:42:36,015 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2023-12-16 04:42:36,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 04:42:36,016 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 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) Word has length 19 [2023-12-16 04:42:36,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:42:36,018 INFO L225 Difference]: With dead ends: 25 [2023-12-16 04:42:36,018 INFO L226 Difference]: Without dead ends: 23 [2023-12-16 04:42:36,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-16 04:42:36,019 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 6 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:42:36,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 53 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:42:36,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-12-16 04:42:36,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-12-16 04:42:36,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 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) [2023-12-16 04:42:36,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2023-12-16 04:42:36,028 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 19 [2023-12-16 04:42:36,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:42:36,028 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2023-12-16 04:42:36,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 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) [2023-12-16 04:42:36,029 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2023-12-16 04:42:36,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-16 04:42:36,029 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:42:36,029 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:42:36,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 04:42:36,029 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:42:36,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:42:36,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1218720098, now seen corresponding path program 1 times [2023-12-16 04:42:36,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:42:36,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81766216] [2023-12-16 04:42:36,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:42:36,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:42:36,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:42:36,753 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-16 04:42:36,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:42:36,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81766216] [2023-12-16 04:42:36,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81766216] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:42:36,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:42:36,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 04:42:36,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675607430] [2023-12-16 04:42:36,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:42:36,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 04:42:36,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:42:36,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 04:42:36,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-16 04:42:36,755 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 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) [2023-12-16 04:42:36,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:42:36,847 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2023-12-16 04:42:36,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 04:42:36,848 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 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) Word has length 21 [2023-12-16 04:42:36,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:42:36,848 INFO L225 Difference]: With dead ends: 43 [2023-12-16 04:42:36,848 INFO L226 Difference]: Without dead ends: 27 [2023-12-16 04:42:36,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-16 04:42:36,850 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 8 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:42:36,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 53 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:42:36,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-12-16 04:42:36,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2023-12-16 04:42:36,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 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) [2023-12-16 04:42:36,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2023-12-16 04:42:36,857 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 21 [2023-12-16 04:42:36,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:42:36,857 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2023-12-16 04:42:36,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 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) [2023-12-16 04:42:36,857 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2023-12-16 04:42:36,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-16 04:42:36,858 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:42:36,858 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:42:36,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 04:42:36,859 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:42:36,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:42:36,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1218721772, now seen corresponding path program 1 times [2023-12-16 04:42:36,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:42:36,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996918310] [2023-12-16 04:42:36,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:42:36,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:42:36,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:42:37,850 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:42:37,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:42:37,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996918310] [2023-12-16 04:42:37,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996918310] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:42:37,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330176665] [2023-12-16 04:42:37,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:42:37,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:42:37,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:42:37,851 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) [2023-12-16 04:42:37,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 04:42:37,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:42:37,984 INFO L262 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 93 conjunts are in the unsatisfiable core [2023-12-16 04:42:37,988 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:42:38,030 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-16 04:42:38,139 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-12-16 04:42:38,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-12-16 04:42:38,208 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 7 [2023-12-16 04:42:38,252 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-16 04:42:38,390 INFO L349 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2023-12-16 04:42:38,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2023-12-16 04:42:38,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-16 04:42:38,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-16 04:42:38,483 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-12-16 04:42:38,534 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-16 04:42:38,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 04:42:38,536 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 15 [2023-12-16 04:42:38,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 04:42:38,545 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 17 [2023-12-16 04:42:38,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 04:42:38,558 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 17 [2023-12-16 04:42:38,585 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2023-12-16 04:42:38,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2023-12-16 04:42:38,625 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-12-16 04:42:38,663 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:42:38,663 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:42:38,704 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_559 (Array Int Int)) (v_ArrVal_558 (Array Int Int)) (v_ArrVal_557 Int)) (= |c_ULTIMATE.start_main_~data~0#1| (let ((.cse1 (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_dll_prepend_~head#1.base|)) (.cse4 (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_dll_prepend_~head#1.base|))) (let ((.cse0 (select .cse4 |c_ULTIMATE.start_dll_prepend_~head#1.offset|)) (.cse2 (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_dll_prepend_~head#1.base| (store .cse4 |c_ULTIMATE.start_dll_prepend_~head#1.offset| |c_ULTIMATE.start_dll_prepend_~new_head~1#1.base|)) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse3 (+ (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_dll_prepend_~head#1.base| (store .cse1 |c_ULTIMATE.start_dll_prepend_~head#1.offset| |c_ULTIMATE.start_dll_prepend_~new_head~1#1.offset|)) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))) (select (select (store |c_#memory_int#2| .cse0 (store (select |c_#memory_int#2| .cse0) (+ (select .cse1 |c_ULTIMATE.start_dll_prepend_~head#1.offset|) 8) v_ArrVal_557)) (select (select (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_558) .cse2) .cse3)) (select (select (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_559) .cse2) .cse3)))))) is different from false [2023-12-16 04:42:38,722 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:42:38,722 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 137 treesize of output 138 [2023-12-16 04:42:38,741 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:42:38,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 274 treesize of output 273 [2023-12-16 04:42:38,765 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:42:38,766 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 230 treesize of output 216 [2023-12-16 04:42:38,780 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:42:38,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 404 treesize of output 373 [2023-12-16 04:42:38,788 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 71 [2023-12-16 04:42:38,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 55 [2023-12-16 04:42:39,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 98 [2023-12-16 04:42:39,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 82 [2023-12-16 04:42:39,513 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:42:39,514 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 19 [2023-12-16 04:42:40,398 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:42:40,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1646 treesize of output 1662 [2023-12-16 04:42:40,427 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:42:40,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 559 treesize of output 556 [2023-12-16 04:42:40,517 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:42:40,517 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 671 treesize of output 656 [2023-12-16 04:42:40,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 647 treesize of output 645 [2023-12-16 04:42:40,544 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 645 treesize of output 641 [2023-12-16 04:42:40,558 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 641 treesize of output 639 [2023-12-16 04:42:48,059 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:42:48,061 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 15 select indices, 15 select index equivalence classes, 0 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 105 case distinctions, treesize of input 5625 treesize of output 6382 [2023-12-16 04:42:51,769 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:42:51,770 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 18 select indices, 18 select index equivalence classes, 0 disjoint index pairs (out of 153 index pairs), introduced 18 new quantified variables, introduced 153 case distinctions, treesize of input 1021 treesize of output 2210 Received shutdown request... [2023-12-16 04:43:40,833 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 04:43:40,842 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-16 04:43:40,850 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 04:43:40,855 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 04:43:41,039 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,SelfDestructingSolverStorable6 [2023-12-16 04:43:41,039 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 22 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-263-2-2-13-2-12-2-11-2-10-2-9-2-8-2-7-2-6-2-5-2-4-2-3-2-2-2-2-2-2-1 context. [2023-12-16 04:43:41,043 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:43:41,045 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 04:43:41,046 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 04:43:41 BoogieIcfgContainer [2023-12-16 04:43:41,046 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 04:43:41,047 INFO L158 Benchmark]: Toolchain (without parser) took 67731.99ms. Allocated memory was 332.4MB in the beginning and 1.2GB in the end (delta: 865.1MB). Free memory was 289.2MB in the beginning and 642.9MB in the end (delta: -353.7MB). Peak memory consumption was 724.8MB. Max. memory is 8.0GB. [2023-12-16 04:43:41,047 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 189.8MB. Free memory is still 137.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 04:43:41,047 INFO L158 Benchmark]: CACSL2BoogieTranslator took 273.15ms. Allocated memory is still 332.4MB. Free memory was 288.7MB in the beginning and 270.3MB in the end (delta: 18.3MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-12-16 04:43:41,047 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.38ms. Allocated memory is still 332.4MB. Free memory was 270.3MB in the beginning and 268.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 04:43:41,047 INFO L158 Benchmark]: Boogie Preprocessor took 44.54ms. Allocated memory is still 332.4MB. Free memory was 268.2MB in the beginning and 265.1MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-16 04:43:41,047 INFO L158 Benchmark]: RCFGBuilder took 351.31ms. Allocated memory is still 332.4MB. Free memory was 265.1MB in the beginning and 245.7MB in the end (delta: 19.4MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-12-16 04:43:41,048 INFO L158 Benchmark]: TraceAbstraction took 67024.32ms. Allocated memory was 332.4MB in the beginning and 1.2GB in the end (delta: 865.1MB). Free memory was 244.6MB in the beginning and 642.9MB in the end (delta: -398.2MB). Peak memory consumption was 679.7MB. Max. memory is 8.0GB. [2023-12-16 04:43:41,048 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 189.8MB. Free memory is still 137.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 273.15ms. Allocated memory is still 332.4MB. Free memory was 288.7MB in the beginning and 270.3MB in the end (delta: 18.3MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 34.38ms. Allocated memory is still 332.4MB. Free memory was 270.3MB in the beginning and 268.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 44.54ms. Allocated memory is still 332.4MB. Free memory was 268.2MB in the beginning and 265.1MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 351.31ms. Allocated memory is still 332.4MB. Free memory was 265.1MB in the beginning and 245.7MB in the end (delta: 19.4MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * TraceAbstraction took 67024.32ms. Allocated memory was 332.4MB in the beginning and 1.2GB in the end (delta: 865.1MB). Free memory was 244.6MB in the beginning and 642.9MB in the end (delta: -398.2MB). Peak memory consumption was 679.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 643]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 643). Cancelled while NwaCegarLoop was analyzing trace of length 22 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-263-2-2-13-2-12-2-11-2-10-2-9-2-8-2-7-2-6-2-5-2-4-2-3-2-2-2-2-2-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 67.0s, OverallIterations: 7, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 25 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 25 mSDsluCounter, 252 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 157 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 232 IncrementalHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 95 mSDtfsCounter, 232 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, 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: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 8 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 100 NumberOfCodeBlocks, 100 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 106 ConstructedInterpolants, 0 QuantifiedInterpolants, 442 SizeOfPredicates, 2 NumberOfNonLiveVariables, 223 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 15/18 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 could not prove your program: Timeout Completed graceful shutdown