/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-52.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 03:12:44,818 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 03:12:44,888 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 03:12:44,891 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 03:12:44,891 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 03:12:44,912 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 03:12:44,912 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 03:12:44,913 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 03:12:44,913 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 03:12:44,916 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 03:12:44,916 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 03:12:44,917 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 03:12:44,917 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 03:12:44,918 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 03:12:44,918 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 03:12:44,918 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 03:12:44,918 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 03:12:44,919 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 03:12:44,919 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 03:12:44,919 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 03:12:44,919 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 03:12:44,919 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 03:12:44,919 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 03:12:44,920 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 03:12:44,920 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 03:12:44,920 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 03:12:44,920 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 03:12:44,920 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 03:12:44,921 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 03:12:44,921 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 03:12:44,922 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 03:12:44,922 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 03:12:44,922 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 03:12:44,922 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 03:12:44,922 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 03:12:44,922 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 03:12:44,922 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 03:12:44,922 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 03:12:44,923 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 03:12:44,923 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 03:12:44,923 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 03:12:44,923 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 03:12:44,923 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 03:12:44,923 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 03:12:45,121 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 03:12:45,140 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 03:12:45,142 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 03:12:45,181 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 03:12:45,181 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 03:12:45,182 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-52.i [2023-12-16 03:12:46,469 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 03:12:46,651 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 03:12:46,652 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-52.i [2023-12-16 03:12:46,659 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8abbc1cf/9c2d03f29ff8479fb72f3d625f044247/FLAG020ceb14b [2023-12-16 03:12:46,670 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8abbc1cf/9c2d03f29ff8479fb72f3d625f044247 [2023-12-16 03:12:46,672 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 03:12:46,673 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 03:12:46,673 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 03:12:46,673 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 03:12:46,682 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 03:12:46,683 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:12:46" (1/1) ... [2023-12-16 03:12:46,684 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@414abaa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:12:46, skipping insertion in model container [2023-12-16 03:12:46,684 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:12:46" (1/1) ... [2023-12-16 03:12:46,711 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 03:12:46,847 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_fillercode_fillercodestructure_filler-pe-co_file-52.i[919,932] [2023-12-16 03:12:46,910 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 03:12:46,919 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 03:12:46,927 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_fillercode_fillercodestructure_filler-pe-co_file-52.i[919,932] [2023-12-16 03:12:46,952 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 03:12:46,971 INFO L206 MainTranslator]: Completed translation [2023-12-16 03:12:46,971 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:12:46 WrapperNode [2023-12-16 03:12:46,972 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 03:12:46,972 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 03:12:46,972 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 03:12:46,973 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 03:12:46,977 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:12:46" (1/1) ... [2023-12-16 03:12:46,984 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:12:46" (1/1) ... [2023-12-16 03:12:47,011 INFO L138 Inliner]: procedures = 26, calls = 35, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 188 [2023-12-16 03:12:47,011 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 03:12:47,012 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 03:12:47,012 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 03:12:47,012 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 03:12:47,019 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:12:46" (1/1) ... [2023-12-16 03:12:47,019 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:12:46" (1/1) ... [2023-12-16 03:12:47,021 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:12:46" (1/1) ... [2023-12-16 03:12:47,043 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]. [2023-12-16 03:12:47,043 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:12:46" (1/1) ... [2023-12-16 03:12:47,043 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:12:46" (1/1) ... [2023-12-16 03:12:47,050 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:12:46" (1/1) ... [2023-12-16 03:12:47,065 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:12:46" (1/1) ... [2023-12-16 03:12:47,067 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:12:46" (1/1) ... [2023-12-16 03:12:47,068 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:12:46" (1/1) ... [2023-12-16 03:12:47,074 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 03:12:47,074 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 03:12:47,075 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 03:12:47,075 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 03:12:47,075 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:12:46" (1/1) ... [2023-12-16 03:12:47,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 03:12:47,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:12:47,103 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 03:12:47,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 03:12:47,127 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 03:12:47,127 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 03:12:47,128 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 03:12:47,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 03:12:47,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 03:12:47,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 03:12:47,217 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 03:12:47,220 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 03:12:47,820 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 03:12:47,925 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 03:12:47,926 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 03:12:47,926 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:12:47 BoogieIcfgContainer [2023-12-16 03:12:47,926 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 03:12:47,940 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 03:12:47,940 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 03:12:47,943 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 03:12:47,943 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 03:12:46" (1/3) ... [2023-12-16 03:12:47,944 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@338bbed9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:12:47, skipping insertion in model container [2023-12-16 03:12:47,944 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:12:46" (2/3) ... [2023-12-16 03:12:47,944 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@338bbed9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:12:47, skipping insertion in model container [2023-12-16 03:12:47,944 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:12:47" (3/3) ... [2023-12-16 03:12:47,945 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-co_file-52.i [2023-12-16 03:12:47,958 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 03:12:47,958 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 03:12:48,027 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 03:12:48,034 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;@387616e0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 03:12:48,034 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 03:12:48,040 INFO L276 IsEmpty]: Start isEmpty. Operand has 73 states, 48 states have (on average 1.5) internal successors, (72), 49 states have internal predecessors, (72), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-16 03:12:48,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-16 03:12:48,059 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:12:48,060 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:12:48,078 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:12:48,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:12:48,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1017583937, now seen corresponding path program 1 times [2023-12-16 03:12:48,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:12:48,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743270582] [2023-12-16 03:12:48,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:12:48,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:12:48,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:12:48,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:12:48,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743270582] [2023-12-16 03:12:48,388 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-16 03:12:48,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882817408] [2023-12-16 03:12:48,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:12:48,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:12:48,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:12:48,392 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 03:12:48,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 03:12:48,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:12:48,525 INFO L262 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 03:12:48,534 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:12:48,578 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked. [2023-12-16 03:12:48,578 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 03:12:48,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882817408] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 03:12:48,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 03:12:48,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 03:12:48,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95858977] [2023-12-16 03:12:48,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:12:48,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 03:12:48,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:12:48,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 03:12:48,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 03:12:48,607 INFO L87 Difference]: Start difference. First operand has 73 states, 48 states have (on average 1.5) internal successors, (72), 49 states have internal predecessors, (72), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 2 states have call successors, (22) [2023-12-16 03:12:48,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:12:48,640 INFO L93 Difference]: Finished difference Result 143 states and 252 transitions. [2023-12-16 03:12:48,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 03:12:48,642 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 2 states have call successors, (22) Word has length 145 [2023-12-16 03:12:48,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:12:48,650 INFO L225 Difference]: With dead ends: 143 [2023-12-16 03:12:48,650 INFO L226 Difference]: Without dead ends: 71 [2023-12-16 03:12:48,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 03:12:48,655 INFO L413 NwaCegarLoop]: 108 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, 108 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 [2023-12-16 03:12:48,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 108 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 03:12:48,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-12-16 03:12:48,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2023-12-16 03:12:48,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 47 states have (on average 1.425531914893617) internal successors, (67), 47 states have internal predecessors, (67), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-16 03:12:48,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 111 transitions. [2023-12-16 03:12:48,686 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 111 transitions. Word has length 145 [2023-12-16 03:12:48,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:12:48,686 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 111 transitions. [2023-12-16 03:12:48,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 2 states have call successors, (22) [2023-12-16 03:12:48,686 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 111 transitions. [2023-12-16 03:12:48,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-16 03:12:48,691 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:12:48,691 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:12:48,702 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-16 03:12:48,899 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 [2023-12-16 03:12:48,900 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:12:48,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:12:48,900 INFO L85 PathProgramCache]: Analyzing trace with hash -406689913, now seen corresponding path program 1 times [2023-12-16 03:12:48,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:12:48,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164728537] [2023-12-16 03:12:48,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:12:48,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:12:48,948 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:12:48,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1514547367] [2023-12-16 03:12:48,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:12:48,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:12:48,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:12:48,985 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 03:12:49,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 03:12:49,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:12:49,202 INFO L262 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-16 03:12:49,222 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:12:49,686 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 21 proven. 63 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2023-12-16 03:12:49,686 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 03:12:49,855 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2023-12-16 03:12:49,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:12:49,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164728537] [2023-12-16 03:12:49,856 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:12:49,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514547367] [2023-12-16 03:12:49,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514547367] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 03:12:49,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 03:12:49,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-16 03:12:49,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143118193] [2023-12-16 03:12:49,857 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 03:12:49,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-16 03:12:49,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:12:49,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-16 03:12:49,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-12-16 03:12:49,863 INFO L87 Difference]: Start difference. First operand 71 states and 111 transitions. Second operand has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 12 states have internal predecessors, (73), 3 states have call successors, (43), 2 states have call predecessors, (43), 4 states have return successors, (44), 2 states have call predecessors, (44), 3 states have call successors, (44) [2023-12-16 03:12:50,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:12:50,930 INFO L93 Difference]: Finished difference Result 296 states and 450 transitions. [2023-12-16 03:12:50,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-16 03:12:50,931 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 12 states have internal predecessors, (73), 3 states have call successors, (43), 2 states have call predecessors, (43), 4 states have return successors, (44), 2 states have call predecessors, (44), 3 states have call successors, (44) Word has length 145 [2023-12-16 03:12:50,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:12:50,933 INFO L225 Difference]: With dead ends: 296 [2023-12-16 03:12:50,934 INFO L226 Difference]: Without dead ends: 226 [2023-12-16 03:12:50,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=302, Invalid=690, Unknown=0, NotChecked=0, Total=992 [2023-12-16 03:12:50,935 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 559 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 282 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 560 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 282 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 03:12:50,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [560 Valid, 400 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [282 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 03:12:50,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2023-12-16 03:12:50,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 214. [2023-12-16 03:12:50,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 141 states have (on average 1.3687943262411348) internal successors, (193), 141 states have internal predecessors, (193), 66 states have call successors, (66), 6 states have call predecessors, (66), 6 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2023-12-16 03:12:50,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 325 transitions. [2023-12-16 03:12:50,970 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 325 transitions. Word has length 145 [2023-12-16 03:12:50,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:12:50,971 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 325 transitions. [2023-12-16 03:12:50,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 12 states have internal predecessors, (73), 3 states have call successors, (43), 2 states have call predecessors, (43), 4 states have return successors, (44), 2 states have call predecessors, (44), 3 states have call successors, (44) [2023-12-16 03:12:50,971 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 325 transitions. [2023-12-16 03:12:50,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-16 03:12:50,972 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:12:50,972 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:12:50,986 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-16 03:12:51,178 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 [2023-12-16 03:12:51,178 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:12:51,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:12:51,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1894132677, now seen corresponding path program 1 times [2023-12-16 03:12:51,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:12:51,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805930769] [2023-12-16 03:12:51,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:12:51,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:12:51,272 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:12:51,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [321744829] [2023-12-16 03:12:51,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:12:51,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:12:51,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:12:51,274 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) [2023-12-16 03:12:51,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 03:12:51,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:12:51,408 INFO L262 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 03:12:51,413 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:12:51,499 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-12-16 03:12:51,499 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 03:12:51,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:12:51,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805930769] [2023-12-16 03:12:51,499 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:12:51,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321744829] [2023-12-16 03:12:51,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321744829] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 03:12:51,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 03:12:51,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 03:12:51,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989908403] [2023-12-16 03:12:51,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:12:51,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 03:12:51,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:12:51,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 03:12:51,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 03:12:51,501 INFO L87 Difference]: Start difference. First operand 214 states and 325 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-16 03:12:51,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:12:51,806 INFO L93 Difference]: Finished difference Result 559 states and 848 transitions. [2023-12-16 03:12:51,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 03:12:51,806 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 145 [2023-12-16 03:12:51,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:12:51,811 INFO L225 Difference]: With dead ends: 559 [2023-12-16 03:12:51,811 INFO L226 Difference]: Without dead ends: 346 [2023-12-16 03:12:51,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 03:12:51,815 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 164 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 03:12:51,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 479 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 03:12:51,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2023-12-16 03:12:51,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 214. [2023-12-16 03:12:51,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 141 states have (on average 1.3687943262411348) internal successors, (193), 141 states have internal predecessors, (193), 66 states have call successors, (66), 6 states have call predecessors, (66), 6 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2023-12-16 03:12:51,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 325 transitions. [2023-12-16 03:12:51,863 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 325 transitions. Word has length 145 [2023-12-16 03:12:51,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:12:51,863 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 325 transitions. [2023-12-16 03:12:51,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-16 03:12:51,864 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 325 transitions. [2023-12-16 03:12:51,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-16 03:12:51,866 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:12:51,866 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:12:51,874 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-16 03:12:52,071 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 [2023-12-16 03:12:52,071 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:12:52,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:12:52,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1440761991, now seen corresponding path program 1 times [2023-12-16 03:12:52,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:12:52,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651845842] [2023-12-16 03:12:52,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:12:52,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:12:52,156 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:12:52,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [704265608] [2023-12-16 03:12:52,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:12:52,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:12:52,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:12:52,171 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) [2023-12-16 03:12:52,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-16 03:12:52,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:12:52,312 INFO L262 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 03:12:52,314 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:12:52,338 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-12-16 03:12:52,338 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 03:12:52,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:12:52,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651845842] [2023-12-16 03:12:52,338 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:12:52,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704265608] [2023-12-16 03:12:52,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704265608] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 03:12:52,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 03:12:52,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 03:12:52,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696082863] [2023-12-16 03:12:52,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:12:52,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 03:12:52,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:12:52,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 03:12:52,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 03:12:52,341 INFO L87 Difference]: Start difference. First operand 214 states and 325 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-16 03:12:52,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:12:52,511 INFO L93 Difference]: Finished difference Result 488 states and 738 transitions. [2023-12-16 03:12:52,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 03:12:52,512 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 145 [2023-12-16 03:12:52,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:12:52,514 INFO L225 Difference]: With dead ends: 488 [2023-12-16 03:12:52,515 INFO L226 Difference]: Without dead ends: 275 [2023-12-16 03:12:52,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 03:12:52,519 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 157 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 03:12:52,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 479 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 03:12:52,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2023-12-16 03:12:52,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 145. [2023-12-16 03:12:52,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 96 states have (on average 1.3645833333333333) internal successors, (131), 96 states have internal predecessors, (131), 44 states have call successors, (44), 4 states have call predecessors, (44), 4 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-16 03:12:52,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 219 transitions. [2023-12-16 03:12:52,572 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 219 transitions. Word has length 145 [2023-12-16 03:12:52,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:12:52,573 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 219 transitions. [2023-12-16 03:12:52,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-16 03:12:52,573 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 219 transitions. [2023-12-16 03:12:52,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-16 03:12:52,574 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:12:52,574 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:12:52,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-16 03:12:52,793 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 [2023-12-16 03:12:52,793 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:12:52,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:12:52,794 INFO L85 PathProgramCache]: Analyzing trace with hash -588971417, now seen corresponding path program 1 times [2023-12-16 03:12:52,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:12:52,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82435969] [2023-12-16 03:12:52,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:12:52,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:12:52,819 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:12:52,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [538733660] [2023-12-16 03:12:52,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:12:52,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:12:52,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:12:52,840 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) [2023-12-16 03:12:52,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-16 03:12:53,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:12:53,014 INFO L262 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 03:12:53,016 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:12:53,033 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-12-16 03:12:53,034 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 03:12:53,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:12:53,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82435969] [2023-12-16 03:12:53,034 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:12:53,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538733660] [2023-12-16 03:12:53,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538733660] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 03:12:53,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 03:12:53,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 03:12:53,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556148682] [2023-12-16 03:12:53,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:12:53,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 03:12:53,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:12:53,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 03:12:53,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 03:12:53,041 INFO L87 Difference]: Start difference. First operand 145 states and 219 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-16 03:12:53,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:12:53,101 INFO L93 Difference]: Finished difference Result 423 states and 636 transitions. [2023-12-16 03:12:53,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 03:12:53,101 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 146 [2023-12-16 03:12:53,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:12:53,103 INFO L225 Difference]: With dead ends: 423 [2023-12-16 03:12:53,103 INFO L226 Difference]: Without dead ends: 279 [2023-12-16 03:12:53,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 03:12:53,104 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 87 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 03:12:53,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 273 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 03:12:53,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2023-12-16 03:12:53,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 169. [2023-12-16 03:12:53,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 120 states have (on average 1.3583333333333334) internal successors, (163), 120 states have internal predecessors, (163), 44 states have call successors, (44), 4 states have call predecessors, (44), 4 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-16 03:12:53,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 251 transitions. [2023-12-16 03:12:53,152 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 251 transitions. Word has length 146 [2023-12-16 03:12:53,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:12:53,176 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 251 transitions. [2023-12-16 03:12:53,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-16 03:12:53,177 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 251 transitions. [2023-12-16 03:12:53,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-16 03:12:53,178 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:12:53,178 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:12:53,196 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-16 03:12:53,391 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 [2023-12-16 03:12:53,392 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:12:53,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:12:53,392 INFO L85 PathProgramCache]: Analyzing trace with hash 2017052137, now seen corresponding path program 1 times [2023-12-16 03:12:53,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:12:53,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881172620] [2023-12-16 03:12:53,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:12:53,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:12:53,454 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:12:53,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [312393013] [2023-12-16 03:12:53,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:12:53,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:12:53,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:12:53,469 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) [2023-12-16 03:12:53,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-16 03:12:53,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:12:53,632 INFO L262 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 03:12:53,643 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:12:53,669 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-12-16 03:12:53,669 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 03:12:53,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:12:53,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881172620] [2023-12-16 03:12:53,670 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:12:53,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312393013] [2023-12-16 03:12:53,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [312393013] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 03:12:53,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 03:12:53,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 03:12:53,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042441941] [2023-12-16 03:12:53,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:12:53,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 03:12:53,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:12:53,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 03:12:53,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 03:12:53,672 INFO L87 Difference]: Start difference. First operand 169 states and 251 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-16 03:12:53,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:12:53,747 INFO L93 Difference]: Finished difference Result 485 states and 724 transitions. [2023-12-16 03:12:53,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 03:12:53,747 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 146 [2023-12-16 03:12:53,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:12:53,748 INFO L225 Difference]: With dead ends: 485 [2023-12-16 03:12:53,749 INFO L226 Difference]: Without dead ends: 317 [2023-12-16 03:12:53,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 03:12:53,750 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 109 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 03:12:53,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 325 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 03:12:53,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2023-12-16 03:12:53,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 205. [2023-12-16 03:12:53,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 156 states have (on average 1.3653846153846154) internal successors, (213), 156 states have internal predecessors, (213), 44 states have call successors, (44), 4 states have call predecessors, (44), 4 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-16 03:12:53,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 301 transitions. [2023-12-16 03:12:53,776 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 301 transitions. Word has length 146 [2023-12-16 03:12:53,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:12:53,776 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 301 transitions. [2023-12-16 03:12:53,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-16 03:12:53,777 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 301 transitions. [2023-12-16 03:12:53,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-16 03:12:53,778 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:12:53,778 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:12:53,786 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-16 03:12:53,983 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 [2023-12-16 03:12:53,984 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:12:53,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:12:53,984 INFO L85 PathProgramCache]: Analyzing trace with hash -841480983, now seen corresponding path program 1 times [2023-12-16 03:12:53,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:12:53,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859618093] [2023-12-16 03:12:53,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:12:53,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:12:54,000 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:12:54,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [386778841] [2023-12-16 03:12:54,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:12:54,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:12:54,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:12:54,002 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) [2023-12-16 03:12:54,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-16 03:12:54,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:12:54,117 INFO L262 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 03:12:54,120 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:12:54,160 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-12-16 03:12:54,161 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 03:12:54,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:12:54,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859618093] [2023-12-16 03:12:54,161 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:12:54,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386778841] [2023-12-16 03:12:54,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386778841] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 03:12:54,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 03:12:54,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 03:12:54,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503800876] [2023-12-16 03:12:54,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:12:54,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 03:12:54,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:12:54,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 03:12:54,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 03:12:54,162 INFO L87 Difference]: Start difference. First operand 205 states and 301 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-16 03:12:54,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:12:54,315 INFO L93 Difference]: Finished difference Result 581 states and 851 transitions. [2023-12-16 03:12:54,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 03:12:54,324 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 146 [2023-12-16 03:12:54,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:12:54,325 INFO L225 Difference]: With dead ends: 581 [2023-12-16 03:12:54,326 INFO L226 Difference]: Without dead ends: 377 [2023-12-16 03:12:54,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 03:12:54,327 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 103 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 03:12:54,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 377 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 03:12:54,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2023-12-16 03:12:54,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 208. [2023-12-16 03:12:54,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 159 states have (on average 1.3647798742138364) internal successors, (217), 159 states have internal predecessors, (217), 44 states have call successors, (44), 4 states have call predecessors, (44), 4 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-16 03:12:54,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 305 transitions. [2023-12-16 03:12:54,412 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 305 transitions. Word has length 146 [2023-12-16 03:12:54,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:12:54,412 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 305 transitions. [2023-12-16 03:12:54,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-16 03:12:54,413 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 305 transitions. [2023-12-16 03:12:54,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-16 03:12:54,414 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:12:54,414 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:12:54,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-16 03:12:54,619 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 [2023-12-16 03:12:54,620 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:12:54,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:12:54,620 INFO L85 PathProgramCache]: Analyzing trace with hash 847462759, now seen corresponding path program 1 times [2023-12-16 03:12:54,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:12:54,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836495990] [2023-12-16 03:12:54,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:12:54,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:12:54,645 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:12:54,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [512337199] [2023-12-16 03:12:54,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:12:54,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:12:54,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:12:54,675 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) [2023-12-16 03:12:54,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-16 03:12:54,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:12:54,910 INFO L262 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 03:12:54,912 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:12:54,938 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-12-16 03:12:54,938 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 03:12:54,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:12:54,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836495990] [2023-12-16 03:12:54,939 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:12:54,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512337199] [2023-12-16 03:12:54,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512337199] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 03:12:54,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 03:12:54,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 03:12:54,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197294755] [2023-12-16 03:12:54,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:12:54,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 03:12:54,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:12:54,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 03:12:54,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 03:12:54,940 INFO L87 Difference]: Start difference. First operand 208 states and 305 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-16 03:12:55,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:12:55,065 INFO L93 Difference]: Finished difference Result 524 states and 765 transitions. [2023-12-16 03:12:55,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 03:12:55,065 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 146 [2023-12-16 03:12:55,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:12:55,067 INFO L225 Difference]: With dead ends: 524 [2023-12-16 03:12:55,067 INFO L226 Difference]: Without dead ends: 317 [2023-12-16 03:12:55,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 03:12:55,068 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 137 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 03:12:55,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 344 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 03:12:55,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2023-12-16 03:12:55,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 208. [2023-12-16 03:12:55,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 159 states have (on average 1.3647798742138364) internal successors, (217), 159 states have internal predecessors, (217), 44 states have call successors, (44), 4 states have call predecessors, (44), 4 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-16 03:12:55,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 305 transitions. [2023-12-16 03:12:55,090 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 305 transitions. Word has length 146 [2023-12-16 03:12:55,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:12:55,090 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 305 transitions. [2023-12-16 03:12:55,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-16 03:12:55,090 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 305 transitions. [2023-12-16 03:12:55,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-16 03:12:55,091 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:12:55,092 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:12:55,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-16 03:12:55,297 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 [2023-12-16 03:12:55,297 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:12:55,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:12:55,298 INFO L85 PathProgramCache]: Analyzing trace with hash -28672718, now seen corresponding path program 1 times [2023-12-16 03:12:55,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:12:55,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047104301] [2023-12-16 03:12:55,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:12:55,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:12:55,311 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:12:55,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2132150546] [2023-12-16 03:12:55,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:12:55,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:12:55,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:12:55,313 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 03:12:55,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-16 03:12:55,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:12:55,448 INFO L262 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-16 03:12:55,450 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:12:56,697 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 540 proven. 174 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2023-12-16 03:12:56,697 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 03:12:57,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:12:57,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047104301] [2023-12-16 03:12:57,144 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:12:57,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132150546] [2023-12-16 03:12:57,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132150546] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 03:12:57,144 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-16 03:12:57,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2023-12-16 03:12:57,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970503921] [2023-12-16 03:12:57,154 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-16 03:12:57,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-16 03:12:57,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:12:57,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-16 03:12:57,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2023-12-16 03:12:57,193 INFO L87 Difference]: Start difference. First operand 208 states and 305 transitions. Second operand has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 17 states have internal predecessors, (61), 5 states have call successors, (22), 5 states have call predecessors, (22), 8 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) [2023-12-16 03:12:58,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:12:58,432 INFO L93 Difference]: Finished difference Result 727 states and 1044 transitions. [2023-12-16 03:12:58,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-16 03:12:58,433 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 17 states have internal predecessors, (61), 5 states have call successors, (22), 5 states have call predecessors, (22), 8 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) Word has length 147 [2023-12-16 03:12:58,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:12:58,435 INFO L225 Difference]: With dead ends: 727 [2023-12-16 03:12:58,435 INFO L226 Difference]: Without dead ends: 520 [2023-12-16 03:12:58,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=387, Invalid=1419, Unknown=0, NotChecked=0, Total=1806 [2023-12-16 03:12:58,437 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 403 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 682 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 03:12:58,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [403 Valid, 682 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 03:12:58,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2023-12-16 03:12:58,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 395. [2023-12-16 03:12:58,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 291 states have (on average 1.3161512027491409) internal successors, (383), 293 states have internal predecessors, (383), 90 states have call successors, (90), 13 states have call predecessors, (90), 13 states have return successors, (90), 88 states have call predecessors, (90), 90 states have call successors, (90) [2023-12-16 03:12:58,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 563 transitions. [2023-12-16 03:12:58,472 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 563 transitions. Word has length 147 [2023-12-16 03:12:58,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:12:58,473 INFO L495 AbstractCegarLoop]: Abstraction has 395 states and 563 transitions. [2023-12-16 03:12:58,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 17 states have internal predecessors, (61), 5 states have call successors, (22), 5 states have call predecessors, (22), 8 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) [2023-12-16 03:12:58,473 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 563 transitions. [2023-12-16 03:12:58,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-16 03:12:58,474 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:12:58,474 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:12:58,484 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-16 03:12:58,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:12:58,684 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:12:58,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:12:58,685 INFO L85 PathProgramCache]: Analyzing trace with hash -838019344, now seen corresponding path program 1 times [2023-12-16 03:12:58,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:12:58,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045366961] [2023-12-16 03:12:58,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:12:58,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:12:58,697 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:12:58,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1581613442] [2023-12-16 03:12:58,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:12:58,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:12:58,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:12:58,699 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 03:12:58,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-16 03:12:58,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:12:58,984 INFO L262 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 66 conjunts are in the unsatisfiable core [2023-12-16 03:12:58,988 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:13:00,915 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 224 proven. 210 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2023-12-16 03:13:00,915 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-16 03:13:57,418 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 03:13:57,464 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 03:13:58,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-16 03:13:58,620 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown