/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_variablewrapping_normal_file-12.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 14:46:01,832 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 14:46:01,898 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 14:46:01,901 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 14:46:01,902 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 14:46:01,924 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 14:46:01,924 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 14:46:01,924 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 14:46:01,925 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 14:46:01,927 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 14:46:01,928 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 14:46:01,928 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 14:46:01,928 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 14:46:01,929 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 14:46:01,929 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 14:46:01,930 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 14:46:01,930 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 14:46:01,930 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 14:46:01,930 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 14:46:01,930 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 14:46:01,930 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 14:46:01,931 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 14:46:01,931 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 14:46:01,931 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 14:46:01,931 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 14:46:01,931 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 14:46:01,931 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 14:46:01,931 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 14:46:01,932 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 14:46:01,932 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 14:46:01,933 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 14:46:01,933 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 14:46:01,933 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 14:46:01,933 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 14:46:01,933 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 14:46:01,933 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 14:46:01,933 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 14:46:01,933 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 14:46:01,933 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 14:46:01,934 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 14:46:01,934 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 14:46:01,934 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 14:46:01,934 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 14:46:01,934 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 14:46:02,117 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 14:46:02,133 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 14:46:02,134 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 14:46:02,135 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 14:46:02,137 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 14:46:02,138 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_normal_file-12.i [2023-12-19 14:46:03,060 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 14:46:03,207 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 14:46:03,208 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_normal_file-12.i [2023-12-19 14:46:03,214 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ede382c60/71760985c2bf48e7ba622b89bf9b1571/FLAG2545425f9 [2023-12-19 14:46:03,230 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ede382c60/71760985c2bf48e7ba622b89bf9b1571 [2023-12-19 14:46:03,232 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 14:46:03,233 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 14:46:03,235 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 14:46:03,235 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 14:46:03,247 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 14:46:03,247 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 02:46:03" (1/1) ... [2023-12-19 14:46:03,248 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11cf472a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:46:03, skipping insertion in model container [2023-12-19 14:46:03,248 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 02:46:03" (1/1) ... [2023-12-19 14:46:03,272 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 14:46:03,390 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_variablewrapping_normal_file-12.i[913,926] [2023-12-19 14:46:03,433 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 14:46:03,440 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 14:46:03,448 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_variablewrapping_normal_file-12.i[913,926] [2023-12-19 14:46:03,461 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 14:46:03,471 INFO L206 MainTranslator]: Completed translation [2023-12-19 14:46:03,471 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:46:03 WrapperNode [2023-12-19 14:46:03,471 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 14:46:03,472 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 14:46:03,472 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 14:46:03,472 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 14:46:03,476 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:46:03" (1/1) ... [2023-12-19 14:46:03,482 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:46:03" (1/1) ... [2023-12-19 14:46:03,510 INFO L138 Inliner]: procedures = 26, calls = 29, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 104 [2023-12-19 14:46:03,510 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 14:46:03,511 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 14:46:03,511 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 14:46:03,511 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 14:46:03,518 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:46:03" (1/1) ... [2023-12-19 14:46:03,518 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:46:03" (1/1) ... [2023-12-19 14:46:03,525 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:46:03" (1/1) ... [2023-12-19 14:46:03,535 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]. [2023-12-19 14:46:03,535 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:46:03" (1/1) ... [2023-12-19 14:46:03,535 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:46:03" (1/1) ... [2023-12-19 14:46:03,540 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:46:03" (1/1) ... [2023-12-19 14:46:03,542 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:46:03" (1/1) ... [2023-12-19 14:46:03,543 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:46:03" (1/1) ... [2023-12-19 14:46:03,544 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:46:03" (1/1) ... [2023-12-19 14:46:03,546 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 14:46:03,546 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 14:46:03,546 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 14:46:03,546 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 14:46:03,547 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:46:03" (1/1) ... [2023-12-19 14:46:03,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 14:46:03,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:46:03,637 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) [2023-12-19 14:46:03,658 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 [2023-12-19 14:46:03,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 14:46:03,663 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 14:46:03,663 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 14:46:03,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 14:46:03,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 14:46:03,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 14:46:03,732 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 14:46:03,733 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 14:46:03,944 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 14:46:03,985 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 14:46:03,986 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 14:46:03,986 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 02:46:03 BoogieIcfgContainer [2023-12-19 14:46:03,986 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 14:46:03,987 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 14:46:03,987 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 14:46:03,989 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 14:46:03,989 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 02:46:03" (1/3) ... [2023-12-19 14:46:03,990 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f6f47bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 02:46:03, skipping insertion in model container [2023-12-19 14:46:03,990 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:46:03" (2/3) ... [2023-12-19 14:46:03,990 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f6f47bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 02:46:03, skipping insertion in model container [2023-12-19 14:46:03,990 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 02:46:03" (3/3) ... [2023-12-19 14:46:03,991 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_normal_file-12.i [2023-12-19 14:46:04,002 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 14:46:04,002 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 14:46:04,033 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 14:46:04,038 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;@299857cf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 14:46:04,038 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 14:46:04,042 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 27 states have internal predecessors, (37), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-19 14:46:04,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-19 14:46:04,049 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:46:04,049 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 14:46:04,050 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:46:04,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:46:04,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1694065204, now seen corresponding path program 1 times [2023-12-19 14:46:04,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:46:04,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608421475] [2023-12-19 14:46:04,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:46:04,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:46:04,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:46:04,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:46:04,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608421475] [2023-12-19 14:46:04,216 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 14:46:04,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334749657] [2023-12-19 14:46:04,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:46:04,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:46:04,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:46:04,221 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) [2023-12-19 14:46:04,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 14:46:04,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:46:04,325 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 14:46:04,329 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:46:04,369 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2023-12-19 14:46:04,369 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 14:46:04,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334749657] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:46:04,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:46:04,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 14:46:04,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583336610] [2023-12-19 14:46:04,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:46:04,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 14:46:04,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:46:04,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 14:46:04,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 14:46:04,401 INFO L87 Difference]: Start difference. First operand has 45 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 27 states have internal predecessors, (37), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-19 14:46:04,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:46:04,441 INFO L93 Difference]: Finished difference Result 85 states and 148 transitions. [2023-12-19 14:46:04,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 14:46:04,443 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 98 [2023-12-19 14:46:04,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:46:04,448 INFO L225 Difference]: With dead ends: 85 [2023-12-19 14:46:04,448 INFO L226 Difference]: Without dead ends: 41 [2023-12-19 14:46:04,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 14:46:04,453 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 14:46:04,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 56 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 14:46:04,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-12-19 14:46:04,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2023-12-19 14:46:04,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-19 14:46:04,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 59 transitions. [2023-12-19 14:46:04,491 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 59 transitions. Word has length 98 [2023-12-19 14:46:04,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:46:04,492 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 59 transitions. [2023-12-19 14:46:04,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-19 14:46:04,492 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 59 transitions. [2023-12-19 14:46:04,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-19 14:46:04,495 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:46:04,495 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 14:46:04,502 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-19 14:46:04,700 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 [2023-12-19 14:46:04,700 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:46:04,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:46:04,701 INFO L85 PathProgramCache]: Analyzing trace with hash -695827916, now seen corresponding path program 1 times [2023-12-19 14:46:04,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:46:04,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784158205] [2023-12-19 14:46:04,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:46:04,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:46:04,726 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:46:04,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1014062206] [2023-12-19 14:46:04,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:46:04,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:46:04,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:46:04,729 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) [2023-12-19 14:46:04,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 14:46:04,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:46:04,802 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-19 14:46:04,806 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:47:03,167 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 12 proven. 33 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-12-19 14:47:03,167 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 14:47:52,164 WARN L293 SmtUtils]: Spent 5.00s on a formula simplification. DAG size of input: 124 DAG size of output: 85 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 14:47:57,958 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-19 14:47:57,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:47:57,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784158205] [2023-12-19 14:47:57,958 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:47:57,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014062206] [2023-12-19 14:47:57,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1014062206] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 14:47:57,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 14:47:57,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2023-12-19 14:47:57,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515776902] [2023-12-19 14:47:57,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:47:57,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 14:47:57,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:47:57,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 14:47:57,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-12-19 14:47:57,961 INFO L87 Difference]: Start difference. First operand 41 states and 59 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-19 14:48:09,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:48:09,990 INFO L93 Difference]: Finished difference Result 95 states and 129 transitions. [2023-12-19 14:48:09,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 14:48:09,990 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 98 [2023-12-19 14:48:09,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:48:09,992 INFO L225 Difference]: With dead ends: 95 [2023-12-19 14:48:09,992 INFO L226 Difference]: Without dead ends: 93 [2023-12-19 14:48:09,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2023-12-19 14:48:09,993 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 83 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-19 14:48:09,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 247 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-12-19 14:48:09,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-12-19 14:48:10,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 69. [2023-12-19 14:48:10,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 42 states have (on average 1.1666666666666667) internal successors, (49), 43 states have internal predecessors, (49), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-19 14:48:10,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 97 transitions. [2023-12-19 14:48:10,009 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 97 transitions. Word has length 98 [2023-12-19 14:48:10,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:48:10,010 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 97 transitions. [2023-12-19 14:48:10,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-19 14:48:10,010 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 97 transitions. [2023-12-19 14:48:10,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-19 14:48:10,011 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:48:10,012 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 14:48:10,034 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 14:48:10,217 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 [2023-12-19 14:48:10,217 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:48:10,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:48:10,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1505174542, now seen corresponding path program 1 times [2023-12-19 14:48:10,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:48:10,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12703628] [2023-12-19 14:48:10,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:48:10,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:48:10,237 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:48:10,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [340260313] [2023-12-19 14:48:10,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:48:10,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:48:10,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:48:10,242 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) [2023-12-19 14:48:10,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 14:48:10,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:48:10,315 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-19 14:48:10,325 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:48:36,714 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 12 proven. 33 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-12-19 14:48:36,714 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 14:49:26,048 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-19 14:49:26,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:49:26,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12703628] [2023-12-19 14:49:26,048 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:49:26,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340260313] [2023-12-19 14:49:26,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340260313] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 14:49:26,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 14:49:26,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2023-12-19 14:49:26,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825925705] [2023-12-19 14:49:26,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:49:26,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 14:49:26,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:49:26,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 14:49:26,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2023-12-19 14:49:26,050 INFO L87 Difference]: Start difference. First operand 69 states and 97 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-19 14:49:28,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:49:28,605 INFO L93 Difference]: Finished difference Result 80 states and 107 transitions. [2023-12-19 14:49:28,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 14:49:28,612 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 98 [2023-12-19 14:49:28,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:49:28,618 INFO L225 Difference]: With dead ends: 80 [2023-12-19 14:49:28,618 INFO L226 Difference]: Without dead ends: 78 [2023-12-19 14:49:28,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2023-12-19 14:49:28,621 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 25 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 14:49:28,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 292 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 14:49:28,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-12-19 14:49:28,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 73. [2023-12-19 14:49:28,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 46 states have (on average 1.1521739130434783) internal successors, (53), 47 states have internal predecessors, (53), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-19 14:49:28,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 101 transitions. [2023-12-19 14:49:28,641 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 101 transitions. Word has length 98 [2023-12-19 14:49:28,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:49:28,642 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 101 transitions. [2023-12-19 14:49:28,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-19 14:49:28,642 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 101 transitions. [2023-12-19 14:49:28,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-19 14:49:28,643 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:49:28,643 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 14:49:28,648 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 14:49:28,848 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 [2023-12-19 14:49:28,853 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:49:28,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:49:28,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1176034001, now seen corresponding path program 1 times [2023-12-19 14:49:28,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:49:28,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401645370] [2023-12-19 14:49:28,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:49:28,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:49:28,907 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:49:28,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [120247830] [2023-12-19 14:49:28,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:49:28,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:49:28,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:49:28,919 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) [2023-12-19 14:49:28,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 14:49:29,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:49:29,013 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-19 14:49:29,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:50:17,813 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 12 proven. 33 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-12-19 14:50:17,813 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 14:50:58,832 WARN L293 SmtUtils]: Spent 8.59s on a formula simplification. DAG size of input: 125 DAG size of output: 116 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 14:51:12,578 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-19 14:51:12,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:51:12,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401645370] [2023-12-19 14:51:12,579 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:51:12,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120247830] [2023-12-19 14:51:12,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120247830] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 14:51:12,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 14:51:12,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2023-12-19 14:51:12,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850825015] [2023-12-19 14:51:12,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:51:12,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 14:51:12,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:51:12,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 14:51:12,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2023-12-19 14:51:12,580 INFO L87 Difference]: Start difference. First operand 73 states and 101 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-19 14:51:24,407 WARN L293 SmtUtils]: Spent 7.88s on a formula simplification. DAG size of input: 125 DAG size of output: 121 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 14:51:30,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:51:30,083 INFO L93 Difference]: Finished difference Result 113 states and 150 transitions. [2023-12-19 14:51:30,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 14:51:30,084 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 99 [2023-12-19 14:51:30,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:51:30,085 INFO L225 Difference]: With dead ends: 113 [2023-12-19 14:51:30,085 INFO L226 Difference]: Without dead ends: 111 [2023-12-19 14:51:30,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 28.1s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2023-12-19 14:51:30,086 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 65 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-19 14:51:30,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 211 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-19 14:51:30,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2023-12-19 14:51:30,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 88. [2023-12-19 14:51:30,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 56 states have (on average 1.125) internal successors, (63), 58 states have internal predecessors, (63), 28 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (28), 26 states have call predecessors, (28), 28 states have call successors, (28) [2023-12-19 14:51:30,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 119 transitions. [2023-12-19 14:51:30,106 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 119 transitions. Word has length 99 [2023-12-19 14:51:30,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:51:30,106 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 119 transitions. [2023-12-19 14:51:30,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-19 14:51:30,106 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 119 transitions. [2023-12-19 14:51:30,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-19 14:51:30,107 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:51:30,108 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 14:51:30,114 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 14:51:30,313 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 [2023-12-19 14:51:30,314 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:51:30,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:51:30,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1233292303, now seen corresponding path program 1 times [2023-12-19 14:51:30,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:51:30,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7384560] [2023-12-19 14:51:30,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:51:30,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:51:30,328 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:51:30,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1357513093] [2023-12-19 14:51:30,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:51:30,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:51:30,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:51:30,330 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) [2023-12-19 14:51:30,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 14:51:30,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:51:30,413 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-19 14:51:30,415 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:51:57,607 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 12 proven. 33 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-12-19 14:51:57,607 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 14:52:46,363 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-19 14:52:46,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:52:46,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7384560] [2023-12-19 14:52:46,363 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:52:46,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357513093] [2023-12-19 14:52:46,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357513093] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 14:52:46,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 14:52:46,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2023-12-19 14:52:46,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933562916] [2023-12-19 14:52:46,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:52:46,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 14:52:46,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:52:46,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 14:52:46,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2023-12-19 14:52:46,365 INFO L87 Difference]: Start difference. First operand 88 states and 119 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-19 14:52:58,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:52:58,064 INFO L93 Difference]: Finished difference Result 109 states and 144 transitions. [2023-12-19 14:52:58,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 14:52:58,064 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 99 [2023-12-19 14:52:58,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:52:58,065 INFO L225 Difference]: With dead ends: 109 [2023-12-19 14:52:58,065 INFO L226 Difference]: Without dead ends: 107 [2023-12-19 14:52:58,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2023-12-19 14:52:58,066 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 66 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-19 14:52:58,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 240 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-12-19 14:52:58,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-12-19 14:52:58,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 102. [2023-12-19 14:52:58,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 63 states have (on average 1.0952380952380953) internal successors, (69), 66 states have internal predecessors, (69), 34 states have call successors, (34), 4 states have call predecessors, (34), 4 states have return successors, (34), 31 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-19 14:52:58,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 137 transitions. [2023-12-19 14:52:58,091 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 137 transitions. Word has length 99 [2023-12-19 14:52:58,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:52:58,092 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 137 transitions. [2023-12-19 14:52:58,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-19 14:52:58,092 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 137 transitions. [2023-12-19 14:52:58,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-19 14:52:58,093 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:52:58,093 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 14:52:58,101 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 14:52:58,295 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 [2023-12-19 14:52:58,296 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:52:58,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:52:58,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1856092371, now seen corresponding path program 1 times [2023-12-19 14:52:58,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:52:58,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316420474] [2023-12-19 14:52:58,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:52:58,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:52:58,308 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:52:58,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [800340118] [2023-12-19 14:52:58,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:52:58,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:52:58,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:52:58,309 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) [2023-12-19 14:52:58,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 14:52:58,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:52:58,378 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-19 14:52:58,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:54:13,244 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 12 proven. 33 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-12-19 14:54:13,244 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 14:58:08,544 WARN L293 SmtUtils]: Spent 43.59s on a formula simplification. DAG size of input: 2949 DAG size of output: 1022 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 14:58:53,626 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-19 14:58:53,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:58:53,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316420474] [2023-12-19 14:58:53,626 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:58:53,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800340118] [2023-12-19 14:58:53,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800340118] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 14:58:53,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 14:58:53,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2023-12-19 14:58:53,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042480831] [2023-12-19 14:58:53,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:58:53,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 14:58:53,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:58:53,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 14:58:53,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2023-12-19 14:58:53,628 INFO L87 Difference]: Start difference. First operand 102 states and 137 transitions. Second operand has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-19 14:59:21,056 WARN L293 SmtUtils]: Spent 20.27s on a formula simplification. DAG size of input: 1058 DAG size of output: 1039 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 14:59:30,554 WARN L293 SmtUtils]: Spent 7.99s on a formula simplification that was a NOOP. DAG size: 1025 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 14:59:32,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:59:32,050 INFO L93 Difference]: Finished difference Result 110 states and 145 transitions. [2023-12-19 14:59:32,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-19 14:59:32,051 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 99 [2023-12-19 14:59:32,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:59:32,052 INFO L225 Difference]: With dead ends: 110 [2023-12-19 14:59:32,052 INFO L226 Difference]: Without dead ends: 108 [2023-12-19 14:59:32,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 80.7s TimeCoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2023-12-19 14:59:32,057 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 33 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-12-19 14:59:32,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 330 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-12-19 14:59:32,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-12-19 14:59:32,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 102. [2023-12-19 14:59:32,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 63 states have (on average 1.0952380952380953) internal successors, (69), 66 states have internal predecessors, (69), 34 states have call successors, (34), 4 states have call predecessors, (34), 4 states have return successors, (34), 31 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-19 14:59:32,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 137 transitions. [2023-12-19 14:59:32,089 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 137 transitions. Word has length 99 [2023-12-19 14:59:32,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:59:32,090 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 137 transitions. [2023-12-19 14:59:32,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-19 14:59:32,090 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 137 transitions. [2023-12-19 14:59:32,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-19 14:59:32,091 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:59:32,091 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 14:59:32,098 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 14:59:32,292 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 [2023-12-19 14:59:32,292 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:59:32,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:59:32,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1913350673, now seen corresponding path program 1 times [2023-12-19 14:59:32,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:59:32,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383299656] [2023-12-19 14:59:32,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:59:32,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:59:32,304 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:59:32,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [982597208] [2023-12-19 14:59:32,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:59:32,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:59:32,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:59:32,307 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) [2023-12-19 14:59:32,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 14:59:32,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:32,371 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-19 14:59:32,373 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:59:45,019 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 12 proven. 33 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-12-19 14:59:45,019 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 15:00:32,787 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-19 15:00:32,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:00:32,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383299656] [2023-12-19 15:00:32,787 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:00:32,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982597208] [2023-12-19 15:00:32,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982597208] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 15:00:32,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 15:00:32,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2023-12-19 15:00:32,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698886296] [2023-12-19 15:00:32,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:00:32,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 15:00:32,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:00:32,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 15:00:32,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2023-12-19 15:00:32,789 INFO L87 Difference]: Start difference. First operand 102 states and 137 transitions. Second operand has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-19 15:00:39,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:00:39,761 INFO L93 Difference]: Finished difference Result 107 states and 142 transitions. [2023-12-19 15:00:39,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-19 15:00:39,762 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 99 [2023-12-19 15:00:39,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:00:39,762 INFO L225 Difference]: With dead ends: 107 [2023-12-19 15:00:39,762 INFO L226 Difference]: Without dead ends: 0 [2023-12-19 15:00:39,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2023-12-19 15:00:39,763 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 31 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-19 15:00:39,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 326 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-19 15:00:39,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-19 15:00:39,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-19 15:00:39,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 15:00:39,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-19 15:00:39,764 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 99 [2023-12-19 15:00:39,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:00:39,764 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-19 15:00:39,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-19 15:00:39,765 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-19 15:00:39,765 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-19 15:00:39,769 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-19 15:00:39,786 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-19 15:00:39,975 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 [2023-12-19 15:00:39,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. Received shutdown request... [2023-12-19 15:00:40,235 WARN L619 AbstractCegarLoop]: Verification canceled: while PolyPacSimplificationTermWalker was simplifying a ∨-5-6-4-4-4-5-3-5-3-5-5-5-3-3-2-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-26-4-5-4-4-5-3-5-3-5-5-5-5-3-3-3-1 context. [2023-12-19 15:00:40,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-19 15:00:40,236 INFO L257 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2023-12-19 15:00:40,237 INFO L158 Benchmark]: Toolchain (without parser) took 877004.47ms. Allocated memory was 206.6MB in the beginning and 953.2MB in the end (delta: 746.6MB). Free memory was 151.3MB in the beginning and 342.2MB in the end (delta: -190.9MB). Peak memory consumption was 556.3MB. Max. memory is 8.0GB. [2023-12-19 15:00:40,237 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 206.6MB. Free memory is still 158.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 15:00:40,238 INFO L158 Benchmark]: CACSL2BoogieTranslator took 236.36ms. Allocated memory is still 206.6MB. Free memory was 151.0MB in the beginning and 138.0MB in the end (delta: 13.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-19 15:00:40,238 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.39ms. Allocated memory is still 206.6MB. Free memory was 138.0MB in the beginning and 134.5MB in the end (delta: 3.4MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-19 15:00:40,238 INFO L158 Benchmark]: Boogie Preprocessor took 35.04ms. Allocated memory is still 206.6MB. Free memory was 134.5MB in the beginning and 129.3MB in the end (delta: 5.2MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-19 15:00:40,238 INFO L158 Benchmark]: RCFGBuilder took 439.80ms. Allocated memory is still 206.6MB. Free memory was 129.0MB in the beginning and 159.3MB in the end (delta: -30.3MB). Peak memory consumption was 10.9MB. Max. memory is 8.0GB. [2023-12-19 15:00:40,239 INFO L158 Benchmark]: TraceAbstraction took 876249.64ms. Allocated memory was 206.6MB in the beginning and 953.2MB in the end (delta: 746.6MB). Free memory was 158.8MB in the beginning and 342.2MB in the end (delta: -183.4MB). Peak memory consumption was 563.2MB. Max. memory is 8.0GB. [2023-12-19 15:00:40,240 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 206.6MB. Free memory is still 158.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 236.36ms. Allocated memory is still 206.6MB. Free memory was 151.0MB in the beginning and 138.0MB in the end (delta: 13.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 38.39ms. Allocated memory is still 206.6MB. Free memory was 138.0MB in the beginning and 134.5MB in the end (delta: 3.4MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 35.04ms. Allocated memory is still 206.6MB. Free memory was 134.5MB in the beginning and 129.3MB in the end (delta: 5.2MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 439.80ms. Allocated memory is still 206.6MB. Free memory was 129.0MB in the beginning and 159.3MB in the end (delta: -30.3MB). Peak memory consumption was 10.9MB. Max. memory is 8.0GB. * TraceAbstraction took 876249.64ms. Allocated memory was 206.6MB in the beginning and 953.2MB in the end (delta: 746.6MB). Free memory was 158.8MB in the beginning and 342.2MB in the end (delta: -183.4MB). Peak memory consumption was 563.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while PolyPacSimplificationTermWalker was simplifying a ∧-2-4-2-3-2-2-2-2-4-2-5-2-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-6-3-2-2-2-2-4-2-5-2-2-2-1 context. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown