/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 true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_codestructure_normal_file-81.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 19:34:56,603 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 19:34:56,652 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 19:34:56,657 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 19:34:56,657 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 19:34:56,684 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 19:34:56,684 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 19:34:56,684 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 19:34:56,685 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 19:34:56,687 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 19:34:56,688 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 19:34:56,688 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 19:34:56,689 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 19:34:56,689 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 19:34:56,690 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 19:34:56,690 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 19:34:56,690 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 19:34:56,690 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 19:34:56,690 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 19:34:56,690 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 19:34:56,690 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 19:34:56,691 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 19:34:56,691 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 19:34:56,691 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 19:34:56,691 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 19:34:56,691 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 19:34:56,691 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 19:34:56,691 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 19:34:56,692 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 19:34:56,692 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 19:34:56,693 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 19:34:56,693 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 19:34:56,693 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:34:56,693 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 19:34:56,693 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 19:34:56,693 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 19:34:56,693 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 19:34:56,694 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 19:34:56,694 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 19:34:56,694 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 19:34:56,694 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 19:34:56,694 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 19:34:56,694 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 19:34:56,694 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 19:34:56,889 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 19:34:56,910 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 19:34:56,912 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 19:34:56,913 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 19:34:56,915 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 19:34:56,915 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_codestructure_normal_file-81.i [2023-12-15 19:34:57,912 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 19:34:58,072 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 19:34:58,072 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_codestructure_normal_file-81.i [2023-12-15 19:34:58,088 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edb298259/7d76b9d2e18f48319184de8b99d02091/FLAGe48d068fa [2023-12-15 19:34:58,100 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edb298259/7d76b9d2e18f48319184de8b99d02091 [2023-12-15 19:34:58,102 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 19:34:58,103 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 19:34:58,104 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 19:34:58,104 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 19:34:58,110 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 19:34:58,110 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:34:58" (1/1) ... [2023-12-15 19:34:58,111 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fc5e86b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:34:58, skipping insertion in model container [2023-12-15 19:34:58,111 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:34:58" (1/1) ... [2023-12-15 19:34:58,137 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 19:34:58,252 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_codestructure_normal_file-81.i[913,926] [2023-12-15 19:34:58,320 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:34:58,334 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 19:34:58,342 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_codestructure_normal_file-81.i[913,926] [2023-12-15 19:34:58,359 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:34:58,369 INFO L206 MainTranslator]: Completed translation [2023-12-15 19:34:58,370 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:34:58 WrapperNode [2023-12-15 19:34:58,370 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 19:34:58,371 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 19:34:58,371 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 19:34:58,371 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 19:34:58,375 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:34:58" (1/1) ... [2023-12-15 19:34:58,381 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:34:58" (1/1) ... [2023-12-15 19:34:58,408 INFO L138 Inliner]: procedures = 26, calls = 45, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 193 [2023-12-15 19:34:58,408 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 19:34:58,409 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 19:34:58,409 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 19:34:58,409 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 19:34:58,416 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:34:58" (1/1) ... [2023-12-15 19:34:58,417 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:34:58" (1/1) ... [2023-12-15 19:34:58,419 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:34:58" (1/1) ... [2023-12-15 19:34:58,430 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-15 19:34:58,430 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:34:58" (1/1) ... [2023-12-15 19:34:58,430 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:34:58" (1/1) ... [2023-12-15 19:34:58,444 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:34:58" (1/1) ... [2023-12-15 19:34:58,446 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:34:58" (1/1) ... [2023-12-15 19:34:58,447 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:34:58" (1/1) ... [2023-12-15 19:34:58,448 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:34:58" (1/1) ... [2023-12-15 19:34:58,451 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 19:34:58,452 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 19:34:58,452 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 19:34:58,452 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 19:34:58,453 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:34:58" (1/1) ... [2023-12-15 19:34:58,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:34:58,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:34:58,489 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) [2023-12-15 19:34:58,493 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 [2023-12-15 19:34:58,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 19:34:58,510 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 19:34:58,510 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 19:34:58,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 19:34:58,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 19:34:58,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 19:34:58,588 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 19:34:58,589 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 19:34:58,835 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 19:34:58,856 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 19:34:58,856 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 19:34:58,857 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:34:58 BoogieIcfgContainer [2023-12-15 19:34:58,857 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 19:34:58,858 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 19:34:58,858 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 19:34:58,860 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 19:34:58,860 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 07:34:58" (1/3) ... [2023-12-15 19:34:58,860 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32f664f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:34:58, skipping insertion in model container [2023-12-15 19:34:58,861 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:34:58" (2/3) ... [2023-12-15 19:34:58,861 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32f664f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:34:58, skipping insertion in model container [2023-12-15 19:34:58,861 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:34:58" (3/3) ... [2023-12-15 19:34:58,862 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_codestructure_normal_file-81.i [2023-12-15 19:34:58,872 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 19:34:58,872 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 19:34:58,908 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 19:34:58,913 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;@25568a70, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 19:34:58,914 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 19:34:58,917 INFO L276 IsEmpty]: Start isEmpty. Operand has 77 states, 42 states have (on average 1.4285714285714286) internal successors, (60), 43 states have internal predecessors, (60), 32 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-15 19:34:58,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-12-15 19:34:58,929 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:34:58,929 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:34:58,930 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:34:58,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:34:58,933 INFO L85 PathProgramCache]: Analyzing trace with hash 990094624, now seen corresponding path program 1 times [2023-12-15 19:34:58,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:34:58,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157407924] [2023-12-15 19:34:58,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:34:58,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:34:59,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:34:59,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:34:59,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157407924] [2023-12-15 19:34:59,138 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-15 19:34:59,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908289741] [2023-12-15 19:34:59,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:34:59,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:34:59,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:34:59,154 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) [2023-12-15 19:34:59,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 19:34:59,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:34:59,306 INFO L262 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-15 19:34:59,316 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:34:59,357 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 1922 trivial. 0 not checked. [2023-12-15 19:34:59,358 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:34:59,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908289741] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:34:59,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:34:59,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:34:59,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928174225] [2023-12-15 19:34:59,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:34:59,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 19:34:59,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:34:59,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 19:34:59,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 19:34:59,389 INFO L87 Difference]: Start difference. First operand has 77 states, 42 states have (on average 1.4285714285714286) internal successors, (60), 43 states have internal predecessors, (60), 32 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Second operand has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 2 states have call successors, (32) [2023-12-15 19:34:59,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:34:59,431 INFO L93 Difference]: Finished difference Result 151 states and 278 transitions. [2023-12-15 19:34:59,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 19:34:59,434 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 2 states have call successors, (32) Word has length 191 [2023-12-15 19:34:59,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:34:59,438 INFO L225 Difference]: With dead ends: 151 [2023-12-15 19:34:59,438 INFO L226 Difference]: Without dead ends: 75 [2023-12-15 19:34:59,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 19:34:59,443 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:34:59,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 115 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:34:59,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-12-15 19:34:59,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2023-12-15 19:34:59,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 41 states have (on average 1.3414634146341464) internal successors, (55), 41 states have internal predecessors, (55), 32 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-15 19:34:59,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 119 transitions. [2023-12-15 19:34:59,473 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 119 transitions. Word has length 191 [2023-12-15 19:34:59,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:34:59,473 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 119 transitions. [2023-12-15 19:34:59,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 2 states have call successors, (32) [2023-12-15 19:34:59,474 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 119 transitions. [2023-12-15 19:34:59,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-12-15 19:34:59,477 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:34:59,477 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:34:59,484 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 19:34:59,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-15 19:34:59,683 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:34:59,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:34:59,684 INFO L85 PathProgramCache]: Analyzing trace with hash -122591968, now seen corresponding path program 1 times [2023-12-15 19:34:59,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:34:59,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418768160] [2023-12-15 19:34:59,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:34:59,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:34:59,738 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:34:59,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [270150208] [2023-12-15 19:34:59,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:34:59,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:34:59,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:34:59,751 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) [2023-12-15 19:34:59,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 19:34:59,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:34:59,855 INFO L262 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-15 19:34:59,860 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:35:00,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 670 proven. 144 refuted. 0 times theorem prover too weak. 1170 trivial. 0 not checked. [2023-12-15 19:35:00,401 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:35:00,643 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 18 proven. 75 refuted. 0 times theorem prover too weak. 1891 trivial. 0 not checked. [2023-12-15 19:35:00,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:35:00,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418768160] [2023-12-15 19:35:00,644 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:35:00,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270150208] [2023-12-15 19:35:00,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270150208] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:35:00,644 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:35:00,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 15 [2023-12-15 19:35:00,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141490996] [2023-12-15 19:35:00,645 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 19:35:00,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-15 19:35:00,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:35:00,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-15 19:35:00,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2023-12-15 19:35:00,647 INFO L87 Difference]: Start difference. First operand 75 states and 119 transitions. Second operand has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 14 states have internal predecessors, (67), 4 states have call successors, (57), 3 states have call predecessors, (57), 5 states have return successors, (58), 4 states have call predecessors, (58), 4 states have call successors, (58) [2023-12-15 19:35:01,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:35:01,490 INFO L93 Difference]: Finished difference Result 245 states and 375 transitions. [2023-12-15 19:35:01,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-15 19:35:01,491 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 14 states have internal predecessors, (67), 4 states have call successors, (57), 3 states have call predecessors, (57), 5 states have return successors, (58), 4 states have call predecessors, (58), 4 states have call successors, (58) Word has length 191 [2023-12-15 19:35:01,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:35:01,499 INFO L225 Difference]: With dead ends: 245 [2023-12-15 19:35:01,499 INFO L226 Difference]: Without dead ends: 171 [2023-12-15 19:35:01,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 371 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2023-12-15 19:35:01,505 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 254 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 1073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 19:35:01,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 425 Invalid, 1073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 919 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 19:35:01,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2023-12-15 19:35:01,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 84. [2023-12-15 19:35:01,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 48 states have (on average 1.2916666666666667) internal successors, (62), 48 states have internal predecessors, (62), 32 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-15 19:35:01,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 126 transitions. [2023-12-15 19:35:01,533 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 126 transitions. Word has length 191 [2023-12-15 19:35:01,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:35:01,534 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 126 transitions. [2023-12-15 19:35:01,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 14 states have internal predecessors, (67), 4 states have call successors, (57), 3 states have call predecessors, (57), 5 states have return successors, (58), 4 states have call predecessors, (58), 4 states have call successors, (58) [2023-12-15 19:35:01,534 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 126 transitions. [2023-12-15 19:35:01,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-12-15 19:35:01,538 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:35:01,539 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:35:01,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 19:35:01,754 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,SelfDestructingSolverStorable1 [2023-12-15 19:35:01,754 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:35:01,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:35:01,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1106888201, now seen corresponding path program 1 times [2023-12-15 19:35:01,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:35:01,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446058389] [2023-12-15 19:35:01,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:35:01,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:35:01,786 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:35:01,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1789589184] [2023-12-15 19:35:01,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:35:01,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:35:01,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:35:01,791 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:35:01,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 19:35:01,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:35:01,876 INFO L262 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:35:01,879 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:35:01,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-12-15 19:35:01,895 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:35:01,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:35:01,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446058389] [2023-12-15 19:35:01,895 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:35:01,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789589184] [2023-12-15 19:35:01,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789589184] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:35:01,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:35:01,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:35:01,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837003840] [2023-12-15 19:35:01,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:35:01,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:35:01,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:35:01,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:35:01,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:35:01,897 INFO L87 Difference]: Start difference. First operand 84 states and 126 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-12-15 19:35:01,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:35:01,930 INFO L93 Difference]: Finished difference Result 214 states and 315 transitions. [2023-12-15 19:35:01,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:35:01,930 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 192 [2023-12-15 19:35:01,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:35:01,931 INFO L225 Difference]: With dead ends: 214 [2023-12-15 19:35:01,932 INFO L226 Difference]: Without dead ends: 131 [2023-12-15 19:35:01,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:35:01,933 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 48 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:35:01,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 244 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:35:01,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-12-15 19:35:01,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 128. [2023-12-15 19:35:01,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 79 states have (on average 1.2911392405063291) internal successors, (102), 80 states have internal predecessors, (102), 42 states have call successors, (42), 6 states have call predecessors, (42), 6 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-15 19:35:01,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 186 transitions. [2023-12-15 19:35:01,946 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 186 transitions. Word has length 192 [2023-12-15 19:35:01,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:35:01,947 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 186 transitions. [2023-12-15 19:35:01,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-12-15 19:35:01,947 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 186 transitions. [2023-12-15 19:35:01,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-12-15 19:35:01,948 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:35:01,948 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:35:01,956 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 19:35:02,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:35:02,154 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:35:02,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:35:02,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1049629899, now seen corresponding path program 1 times [2023-12-15 19:35:02,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:35:02,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101194840] [2023-12-15 19:35:02,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:35:02,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:35:02,186 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:35:02,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [775441763] [2023-12-15 19:35:02,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:35:02,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:35:02,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:35:02,193 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:35:02,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 19:35:02,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:35:02,389 INFO L262 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 70 conjunts are in the unsatisfiable core [2023-12-15 19:35:02,414 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:35:15,105 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 1336 proven. 336 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-15 19:35:15,105 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:35:22,566 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-12-15 19:35:22,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:35:22,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101194840] [2023-12-15 19:35:22,566 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:35:22,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775441763] [2023-12-15 19:35:22,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775441763] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 19:35:22,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 19:35:22,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [40] total 47 [2023-12-15 19:35:22,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626509149] [2023-12-15 19:35:22,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:35:22,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 19:35:22,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:35:22,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 19:35:22,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=448, Invalid=1714, Unknown=0, NotChecked=0, Total=2162 [2023-12-15 19:35:22,570 INFO L87 Difference]: Start difference. First operand 128 states and 186 transitions. Second operand has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-12-15 19:35:29,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:35:29,074 INFO L93 Difference]: Finished difference Result 505 states and 713 transitions. [2023-12-15 19:35:29,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-15 19:35:29,075 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 192 [2023-12-15 19:35:29,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:35:29,080 INFO L225 Difference]: With dead ends: 505 [2023-12-15 19:35:29,081 INFO L226 Difference]: Without dead ends: 378 [2023-12-15 19:35:29,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1149 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=627, Invalid=3033, Unknown=0, NotChecked=0, Total=3660 [2023-12-15 19:35:29,083 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 337 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 19:35:29,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 683 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 19:35:29,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2023-12-15 19:35:29,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 207. [2023-12-15 19:35:29,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 144 states have (on average 1.3680555555555556) internal successors, (197), 147 states have internal predecessors, (197), 54 states have call successors, (54), 8 states have call predecessors, (54), 8 states have return successors, (54), 51 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-15 19:35:29,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 305 transitions. [2023-12-15 19:35:29,110 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 305 transitions. Word has length 192 [2023-12-15 19:35:29,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:35:29,110 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 305 transitions. [2023-12-15 19:35:29,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-12-15 19:35:29,110 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 305 transitions. [2023-12-15 19:35:29,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-12-15 19:35:29,112 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:35:29,112 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:35:29,119 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-15 19:35:29,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:35:29,317 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:35:29,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:35:29,317 INFO L85 PathProgramCache]: Analyzing trace with hash -569475438, now seen corresponding path program 1 times [2023-12-15 19:35:29,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:35:29,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685552008] [2023-12-15 19:35:29,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:35:29,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:35:29,350 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:35:29,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [45793437] [2023-12-15 19:35:29,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:35:29,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:35:29,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:35:29,352 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:35:29,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 19:35:29,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:35:29,444 INFO L262 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 19:35:29,447 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:35:29,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 1023 proven. 45 refuted. 0 times theorem prover too weak. 916 trivial. 0 not checked. [2023-12-15 19:35:29,534 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:35:29,666 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 48 proven. 45 refuted. 0 times theorem prover too weak. 1891 trivial. 0 not checked. [2023-12-15 19:35:29,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:35:29,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685552008] [2023-12-15 19:35:29,670 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:35:29,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45793437] [2023-12-15 19:35:29,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45793437] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:35:29,672 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:35:29,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-15 19:35:29,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843201069] [2023-12-15 19:35:29,673 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 19:35:29,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 19:35:29,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:35:29,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 19:35:29,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-12-15 19:35:29,674 INFO L87 Difference]: Start difference. First operand 207 states and 305 transitions. Second operand has 10 states, 10 states have (on average 6.1) internal successors, (61), 10 states have internal predecessors, (61), 3 states have call successors, (47), 2 states have call predecessors, (47), 4 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) [2023-12-15 19:35:29,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:35:29,959 INFO L93 Difference]: Finished difference Result 425 states and 624 transitions. [2023-12-15 19:35:29,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 19:35:29,962 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 10 states have internal predecessors, (61), 3 states have call successors, (47), 2 states have call predecessors, (47), 4 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) Word has length 192 [2023-12-15 19:35:29,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:35:29,963 INFO L225 Difference]: With dead ends: 425 [2023-12-15 19:35:29,963 INFO L226 Difference]: Without dead ends: 219 [2023-12-15 19:35:29,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 374 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2023-12-15 19:35:29,964 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 91 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 19:35:29,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 222 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 19:35:29,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2023-12-15 19:35:29,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 213. [2023-12-15 19:35:29,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 149 states have (on average 1.3557046979865772) internal successors, (202), 152 states have internal predecessors, (202), 54 states have call successors, (54), 9 states have call predecessors, (54), 9 states have return successors, (54), 51 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-15 19:35:29,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 310 transitions. [2023-12-15 19:35:29,989 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 310 transitions. Word has length 192 [2023-12-15 19:35:29,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:35:29,990 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 310 transitions. [2023-12-15 19:35:29,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 10 states have internal predecessors, (61), 3 states have call successors, (47), 2 states have call predecessors, (47), 4 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) [2023-12-15 19:35:29,990 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 310 transitions. [2023-12-15 19:35:29,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-12-15 19:35:29,991 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:35:29,992 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:35:29,998 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 19:35:30,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:35:30,196 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:35:30,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:35:30,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1205531924, now seen corresponding path program 1 times [2023-12-15 19:35:30,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:35:30,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166695381] [2023-12-15 19:35:30,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:35:30,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:35:30,211 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:35:30,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [8000645] [2023-12-15 19:35:30,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:35:30,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:35:30,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:35:30,212 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:35:30,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 19:35:30,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:35:30,411 INFO L262 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-15 19:35:30,415 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:35:43,106 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 670 proven. 144 refuted. 0 times theorem prover too weak. 1170 trivial. 0 not checked. [2023-12-15 19:35:43,106 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:35:46,908 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-12-15 19:35:46,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:35:46,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166695381] [2023-12-15 19:35:46,908 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:35:46,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8000645] [2023-12-15 19:35:46,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [8000645] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 19:35:46,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 19:35:46,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [16] total 23 [2023-12-15 19:35:46,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013555975] [2023-12-15 19:35:46,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:35:46,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 19:35:46,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:35:46,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 19:35:46,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=386, Unknown=0, NotChecked=0, Total=506 [2023-12-15 19:35:46,910 INFO L87 Difference]: Start difference. First operand 213 states and 310 transitions. Second operand has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-12-15 19:35:48,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:35:48,428 INFO L93 Difference]: Finished difference Result 630 states and 908 transitions. [2023-12-15 19:35:48,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-15 19:35:48,433 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 192 [2023-12-15 19:35:48,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:35:48,435 INFO L225 Difference]: With dead ends: 630 [2023-12-15 19:35:48,437 INFO L226 Difference]: Without dead ends: 418 [2023-12-15 19:35:48,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 362 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=239, Invalid=817, Unknown=0, NotChecked=0, Total=1056 [2023-12-15 19:35:48,439 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 336 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 19:35:48,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 686 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 19:35:48,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2023-12-15 19:35:48,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 224. [2023-12-15 19:35:48,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 160 states have (on average 1.375) internal successors, (220), 163 states have internal predecessors, (220), 54 states have call successors, (54), 9 states have call predecessors, (54), 9 states have return successors, (54), 51 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-15 19:35:48,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 328 transitions. [2023-12-15 19:35:48,466 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 328 transitions. Word has length 192 [2023-12-15 19:35:48,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:35:48,468 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 328 transitions. [2023-12-15 19:35:48,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-12-15 19:35:48,468 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 328 transitions. [2023-12-15 19:35:48,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-12-15 19:35:48,471 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:35:48,471 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:35:48,478 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-15 19:35:48,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:35:48,678 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:35:48,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:35:48,679 INFO L85 PathProgramCache]: Analyzing trace with hash -369571529, now seen corresponding path program 1 times [2023-12-15 19:35:48,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:35:48,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599572440] [2023-12-15 19:35:48,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:35:48,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:35:48,701 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:35:48,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [731908616] [2023-12-15 19:35:48,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:35:48,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:35:48,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:35:48,702 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:35:48,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-15 19:35:48,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:35:48,858 INFO L262 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-15 19:35:48,873 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:35:56,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 1195 proven. 183 refuted. 0 times theorem prover too weak. 606 trivial. 0 not checked. [2023-12-15 19:35:56,039 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:35:59,174 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-12-15 19:35:59,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:35:59,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599572440] [2023-12-15 19:35:59,174 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:35:59,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731908616] [2023-12-15 19:35:59,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731908616] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 19:35:59,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 19:35:59,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [20] total 28 [2023-12-15 19:35:59,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491958730] [2023-12-15 19:35:59,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:35:59,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-15 19:35:59,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:35:59,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-15 19:35:59,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2023-12-15 19:35:59,176 INFO L87 Difference]: Start difference. First operand 224 states and 328 transitions. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-12-15 19:36:01,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:36:01,516 INFO L93 Difference]: Finished difference Result 607 states and 861 transitions. [2023-12-15 19:36:01,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-15 19:36:01,517 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 192 [2023-12-15 19:36:01,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:36:01,518 INFO L225 Difference]: With dead ends: 607 [2023-12-15 19:36:01,518 INFO L226 Difference]: Without dead ends: 384 [2023-12-15 19:36:01,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 357 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 485 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=366, Invalid=1356, Unknown=0, NotChecked=0, Total=1722 [2023-12-15 19:36:01,519 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 356 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 19:36:01,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 742 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 19:36:01,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2023-12-15 19:36:01,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 226. [2023-12-15 19:36:01,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 162 states have (on average 1.382716049382716) internal successors, (224), 165 states have internal predecessors, (224), 54 states have call successors, (54), 9 states have call predecessors, (54), 9 states have return successors, (54), 51 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-15 19:36:01,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 332 transitions. [2023-12-15 19:36:01,557 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 332 transitions. Word has length 192 [2023-12-15 19:36:01,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:36:01,558 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 332 transitions. [2023-12-15 19:36:01,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-12-15 19:36:01,558 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 332 transitions. [2023-12-15 19:36:01,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-12-15 19:36:01,559 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:36:01,559 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:36:01,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-15 19:36:01,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:36:01,760 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:36:01,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:36:01,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1885590294, now seen corresponding path program 1 times [2023-12-15 19:36:01,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:36:01,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950951351] [2023-12-15 19:36:01,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:36:01,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:36:01,773 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:36:01,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2088166481] [2023-12-15 19:36:01,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:36:01,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:36:01,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:36:01,774 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:36:01,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-15 19:36:02,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:36:02,128 INFO L262 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 65 conjunts are in the unsatisfiable core [2023-12-15 19:36:02,134 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-15 19:36:07,832 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 [2023-12-15 19:36:07,838 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 19:36:07,851 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 19:36:07,857 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-15 19:36:08,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-15 19:36:08,052 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 193 with TraceHistMax 32,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 34 known predicates. [2023-12-15 19:36:08,056 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:36:08,057 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 19:36:08,059 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 07:36:08 BoogieIcfgContainer [2023-12-15 19:36:08,059 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 19:36:08,059 INFO L158 Benchmark]: Toolchain (without parser) took 69956.46ms. Allocated memory was 267.4MB in the beginning and 558.9MB in the end (delta: 291.5MB). Free memory was 215.8MB in the beginning and 451.9MB in the end (delta: -236.1MB). Peak memory consumption was 56.3MB. Max. memory is 8.0GB. [2023-12-15 19:36:08,059 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 211.8MB. Free memory is still 161.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 19:36:08,059 INFO L158 Benchmark]: CACSL2BoogieTranslator took 266.61ms. Allocated memory is still 267.4MB. Free memory was 215.4MB in the beginning and 201.0MB in the end (delta: 14.4MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-15 19:36:08,060 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.82ms. Allocated memory is still 267.4MB. Free memory was 201.0MB in the beginning and 196.6MB in the end (delta: 4.4MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-15 19:36:08,060 INFO L158 Benchmark]: Boogie Preprocessor took 42.45ms. Allocated memory is still 267.4MB. Free memory was 196.6MB in the beginning and 191.0MB in the end (delta: 5.6MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-15 19:36:08,060 INFO L158 Benchmark]: RCFGBuilder took 404.91ms. Allocated memory is still 267.4MB. Free memory was 191.0MB in the beginning and 226.5MB in the end (delta: -35.4MB). Peak memory consumption was 27.4MB. Max. memory is 8.0GB. [2023-12-15 19:36:08,060 INFO L158 Benchmark]: TraceAbstraction took 69200.93ms. Allocated memory was 267.4MB in the beginning and 558.9MB in the end (delta: 291.5MB). Free memory was 225.9MB in the beginning and 451.9MB in the end (delta: -225.9MB). Peak memory consumption was 65.6MB. Max. memory is 8.0GB. [2023-12-15 19:36:08,061 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 211.8MB. Free memory is still 161.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 266.61ms. Allocated memory is still 267.4MB. Free memory was 215.4MB in the beginning and 201.0MB in the end (delta: 14.4MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 37.82ms. Allocated memory is still 267.4MB. Free memory was 201.0MB in the beginning and 196.6MB in the end (delta: 4.4MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 42.45ms. Allocated memory is still 267.4MB. Free memory was 196.6MB in the beginning and 191.0MB in the end (delta: 5.6MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 404.91ms. Allocated memory is still 267.4MB. Free memory was 191.0MB in the beginning and 226.5MB in the end (delta: -35.4MB). Peak memory consumption was 27.4MB. Max. memory is 8.0GB. * TraceAbstraction took 69200.93ms. Allocated memory was 267.4MB in the beginning and 558.9MB in the end (delta: 291.5MB). Free memory was 225.9MB in the beginning and 451.9MB in the end (delta: -225.9MB). Peak memory consumption was 65.6MB. 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: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 193 with TraceHistMax 32,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 34 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 69.2s, OverallIterations: 8, TraceHistogramMax: 32, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 11.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1440 SdHoareTripleChecker+Valid, 3.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1422 mSDsluCounter, 3117 SdHoareTripleChecker+Invalid, 2.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2279 mSDsCounter, 375 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2574 IncrementalHoareTripleChecker+Invalid, 2949 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 375 mSolverCounterUnsat, 838 mSDtfsCounter, 2574 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2359 GetRequests, 2182 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2149 ImplicationChecksByTransitivity, 20.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=226occurred in iteration=7, InterpolantAutomatonStates: 96, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 7 MinimizatonAttempts, 619 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 48.2s InterpolantComputationTime, 1533 NumberOfCodeBlocks, 1533 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 2289 ConstructedInterpolants, 0 QuantifiedInterpolants, 20456 SizeOfPredicates, 131 NumberOfNonLiveVariables, 2994 ConjunctsInSsa, 162 ConjunctsInUnsatCore, 12 InterpolantComputations, 5 PerfectInterpolantSequences, 22836/23808 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