/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-9.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 07:53:52,535 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 07:53:52,622 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 07:53:52,629 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 07:53:52,629 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 07:53:52,668 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 07:53:52,669 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 07:53:52,669 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 07:53:52,670 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 07:53:52,674 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 07:53:52,674 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 07:53:52,675 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 07:53:52,676 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 07:53:52,677 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 07:53:52,677 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 07:53:52,677 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 07:53:52,678 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 07:53:52,678 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 07:53:52,678 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 07:53:52,678 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 07:53:52,678 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 07:53:52,679 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 07:53:52,679 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 07:53:52,679 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 07:53:52,679 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 07:53:52,680 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 07:53:52,680 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 07:53:52,680 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 07:53:52,681 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 07:53:52,681 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 07:53:52,682 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 07:53:52,682 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 07:53:52,682 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 07:53:52,682 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 07:53:52,683 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 07:53:52,683 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 07:53:52,683 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 07:53:52,683 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 07:53:52,683 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 07:53:52,683 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 07:53:52,683 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 07:53:52,684 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 07:53:52,684 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 07:53:52,684 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 07:53:52,932 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 07:53:52,962 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 07:53:52,964 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 07:53:52,966 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 07:53:52,966 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 07:53:52,967 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-9.i [2023-12-19 07:53:54,344 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 07:53:54,627 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 07:53:54,627 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-9.i [2023-12-19 07:53:54,657 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94bc42ee9/bf0564c393754aee858494b858741c63/FLAGbbf909e60 [2023-12-19 07:53:54,675 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94bc42ee9/bf0564c393754aee858494b858741c63 [2023-12-19 07:53:54,677 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 07:53:54,679 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 07:53:54,681 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 07:53:54,681 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 07:53:54,686 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 07:53:54,686 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 07:53:54" (1/1) ... [2023-12-19 07:53:54,687 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3097eff5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:53:54, skipping insertion in model container [2023-12-19 07:53:54,687 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 07:53:54" (1/1) ... [2023-12-19 07:53:54,739 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 07:53:54,898 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_fillercodesize_ps-cn-500_file-9.i[915,928] [2023-12-19 07:53:55,117 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 07:53:55,134 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 07:53:55,146 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_fillercodesize_ps-cn-500_file-9.i[915,928] [2023-12-19 07:53:55,239 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 07:53:55,258 INFO L206 MainTranslator]: Completed translation [2023-12-19 07:53:55,259 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:53:55 WrapperNode [2023-12-19 07:53:55,259 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 07:53:55,260 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 07:53:55,260 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 07:53:55,260 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 07:53:55,266 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:53:55" (1/1) ... [2023-12-19 07:53:55,293 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:53:55" (1/1) ... [2023-12-19 07:53:55,391 INFO L138 Inliner]: procedures = 26, calls = 102, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 793 [2023-12-19 07:53:55,392 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 07:53:55,393 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 07:53:55,393 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 07:53:55,393 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 07:53:55,402 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:53:55" (1/1) ... [2023-12-19 07:53:55,402 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:53:55" (1/1) ... [2023-12-19 07:53:55,423 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:53:55" (1/1) ... [2023-12-19 07:53:55,470 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-19 07:53:55,471 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:53:55" (1/1) ... [2023-12-19 07:53:55,471 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:53:55" (1/1) ... [2023-12-19 07:53:55,521 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:53:55" (1/1) ... [2023-12-19 07:53:55,528 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:53:55" (1/1) ... [2023-12-19 07:53:55,544 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:53:55" (1/1) ... [2023-12-19 07:53:55,554 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:53:55" (1/1) ... [2023-12-19 07:53:55,575 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 07:53:55,576 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 07:53:55,576 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 07:53:55,576 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 07:53:55,577 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:53:55" (1/1) ... [2023-12-19 07:53:55,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 07:53:55,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:53:55,610 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-19 07:53:55,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-19 07:53:55,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 07:53:55,634 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 07:53:55,634 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 07:53:55,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 07:53:55,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 07:53:55,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 07:53:55,824 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 07:53:55,828 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 07:53:56,860 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 07:53:56,924 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 07:53:56,925 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 07:53:56,925 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 07:53:56 BoogieIcfgContainer [2023-12-19 07:53:56,925 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 07:53:56,927 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 07:53:56,927 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 07:53:56,930 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 07:53:56,931 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 07:53:54" (1/3) ... [2023-12-19 07:53:56,932 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3744ce3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 07:53:56, skipping insertion in model container [2023-12-19 07:53:56,932 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:53:55" (2/3) ... [2023-12-19 07:53:56,933 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3744ce3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 07:53:56, skipping insertion in model container [2023-12-19 07:53:56,933 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 07:53:56" (3/3) ... [2023-12-19 07:53:56,934 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-9.i [2023-12-19 07:53:56,950 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 07:53:56,951 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 07:53:57,019 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 07:53:57,026 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;@66914dd1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 07:53:57,026 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 07:53:57,035 INFO L276 IsEmpty]: Start isEmpty. Operand has 313 states, 221 states have (on average 1.6832579185520362) internal successors, (372), 222 states have internal predecessors, (372), 89 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 89 states have call predecessors, (89), 89 states have call successors, (89) [2023-12-19 07:53:57,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 584 [2023-12-19 07:53:57,075 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:53:57,076 INFO L195 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:53:57,076 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:53:57,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:53:57,084 INFO L85 PathProgramCache]: Analyzing trace with hash -990419008, now seen corresponding path program 1 times [2023-12-19 07:53:57,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:53:57,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021847932] [2023-12-19 07:53:57,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:53:57,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:53:57,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:53:57,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:53:57,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021847932] [2023-12-19 07:53:57,499 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 07:53:57,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152800247] [2023-12-19 07:53:57,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:53:57,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:53:57,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:53:57,507 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:53:57,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 07:53:57,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:53:57,876 INFO L262 TraceCheckSpWp]: Trace formula consists of 1355 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 07:53:57,914 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:53:57,985 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 15488 trivial. 0 not checked. [2023-12-19 07:53:57,985 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:53:57,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152800247] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:53:57,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:53:57,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 07:53:57,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013262377] [2023-12-19 07:53:57,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:53:57,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 07:53:57,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:53:58,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 07:53:58,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 07:53:58,024 INFO L87 Difference]: Start difference. First operand has 313 states, 221 states have (on average 1.6832579185520362) internal successors, (372), 222 states have internal predecessors, (372), 89 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 89 states have call predecessors, (89), 89 states have call successors, (89) Second operand has 2 states, 2 states have (on average 71.5) internal successors, (143), 2 states have internal predecessors, (143), 2 states have call successors, (89), 2 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 2 states have call successors, (89) [2023-12-19 07:53:58,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:53:58,123 INFO L93 Difference]: Finished difference Result 620 states and 1181 transitions. [2023-12-19 07:53:58,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 07:53:58,135 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 71.5) internal successors, (143), 2 states have internal predecessors, (143), 2 states have call successors, (89), 2 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 2 states have call successors, (89) Word has length 583 [2023-12-19 07:53:58,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:53:58,145 INFO L225 Difference]: With dead ends: 620 [2023-12-19 07:53:58,145 INFO L226 Difference]: Without dead ends: 308 [2023-12-19 07:53:58,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 582 GetRequests, 582 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 07:53:58,154 INFO L413 NwaCegarLoop]: 533 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, 533 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:53:58,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 533 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:53:58,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2023-12-19 07:53:58,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 308. [2023-12-19 07:53:58,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 217 states have (on average 1.6497695852534562) internal successors, (358), 217 states have internal predecessors, (358), 89 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 89 states have call predecessors, (89), 89 states have call successors, (89) [2023-12-19 07:53:58,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 536 transitions. [2023-12-19 07:53:58,260 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 536 transitions. Word has length 583 [2023-12-19 07:53:58,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:53:58,262 INFO L495 AbstractCegarLoop]: Abstraction has 308 states and 536 transitions. [2023-12-19 07:53:58,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 71.5) internal successors, (143), 2 states have internal predecessors, (143), 2 states have call successors, (89), 2 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 2 states have call successors, (89) [2023-12-19 07:53:58,263 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 536 transitions. [2023-12-19 07:53:58,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 584 [2023-12-19 07:53:58,277 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:53:58,277 INFO L195 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:53:58,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 07:53:58,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-19 07:53:58,488 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:53:58,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:53:58,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1993675974, now seen corresponding path program 1 times [2023-12-19 07:53:58,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:53:58,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962977420] [2023-12-19 07:53:58,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:53:58,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:53:58,646 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:53:58,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [5668021] [2023-12-19 07:53:58,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:53:58,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:53:58,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:53:58,651 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:53:58,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 07:53:59,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:53:59,009 INFO L262 TraceCheckSpWp]: Trace formula consists of 1355 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:53:59,019 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:53:59,065 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2023-12-19 07:53:59,066 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:53:59,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:53:59,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962977420] [2023-12-19 07:53:59,066 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:53:59,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5668021] [2023-12-19 07:53:59,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5668021] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:53:59,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:53:59,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:53:59,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730771582] [2023-12-19 07:53:59,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:53:59,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:53:59,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:53:59,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:53:59,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:53:59,072 INFO L87 Difference]: Start difference. First operand 308 states and 536 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2023-12-19 07:53:59,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:53:59,137 INFO L93 Difference]: Finished difference Result 616 states and 1073 transitions. [2023-12-19 07:53:59,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:53:59,138 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 583 [2023-12-19 07:53:59,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:53:59,143 INFO L225 Difference]: With dead ends: 616 [2023-12-19 07:53:59,143 INFO L226 Difference]: Without dead ends: 309 [2023-12-19 07:53:59,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 582 GetRequests, 581 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:53:59,145 INFO L413 NwaCegarLoop]: 532 mSDtfsCounter, 0 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1059 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:53:59,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1059 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:53:59,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2023-12-19 07:53:59,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 309. [2023-12-19 07:53:59,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 218 states have (on average 1.646788990825688) internal successors, (359), 218 states have internal predecessors, (359), 89 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 89 states have call predecessors, (89), 89 states have call successors, (89) [2023-12-19 07:53:59,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 537 transitions. [2023-12-19 07:53:59,208 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 537 transitions. Word has length 583 [2023-12-19 07:53:59,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:53:59,212 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 537 transitions. [2023-12-19 07:53:59,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2023-12-19 07:53:59,213 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 537 transitions. [2023-12-19 07:53:59,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 584 [2023-12-19 07:53:59,224 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:53:59,224 INFO L195 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:53:59,240 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 07:53:59,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-19 07:53:59,433 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:53:59,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:53:59,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1280222968, now seen corresponding path program 1 times [2023-12-19 07:53:59,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:53:59,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371956270] [2023-12-19 07:53:59,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:53:59,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:53:59,508 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:53:59,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [89665293] [2023-12-19 07:53:59,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:53:59,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:53:59,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:53:59,518 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:53:59,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 07:53:59,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:53:59,859 INFO L262 TraceCheckSpWp]: Trace formula consists of 1353 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:53:59,869 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:53:59,929 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2023-12-19 07:53:59,929 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:53:59,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:53:59,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371956270] [2023-12-19 07:53:59,930 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:53:59,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89665293] [2023-12-19 07:53:59,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89665293] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:53:59,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:53:59,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:53:59,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679542376] [2023-12-19 07:53:59,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:53:59,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:53:59,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:53:59,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:53:59,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:53:59,935 INFO L87 Difference]: Start difference. First operand 309 states and 537 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2023-12-19 07:54:00,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:54:00,011 INFO L93 Difference]: Finished difference Result 810 states and 1413 transitions. [2023-12-19 07:54:00,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:54:00,012 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 583 [2023-12-19 07:54:00,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:54:00,019 INFO L225 Difference]: With dead ends: 810 [2023-12-19 07:54:00,020 INFO L226 Difference]: Without dead ends: 502 [2023-12-19 07:54:00,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 582 GetRequests, 581 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:54:00,022 INFO L413 NwaCegarLoop]: 771 mSDtfsCounter, 344 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 1278 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:54:00,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 1278 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:54:00,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2023-12-19 07:54:00,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 499. [2023-12-19 07:54:00,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 377 states have (on average 1.6843501326259946) internal successors, (635), 378 states have internal predecessors, (635), 119 states have call successors, (119), 2 states have call predecessors, (119), 2 states have return successors, (119), 118 states have call predecessors, (119), 119 states have call successors, (119) [2023-12-19 07:54:00,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 873 transitions. [2023-12-19 07:54:00,068 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 873 transitions. Word has length 583 [2023-12-19 07:54:00,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:54:00,069 INFO L495 AbstractCegarLoop]: Abstraction has 499 states and 873 transitions. [2023-12-19 07:54:00,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2023-12-19 07:54:00,070 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 873 transitions. [2023-12-19 07:54:00,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 584 [2023-12-19 07:54:00,075 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:54:00,075 INFO L195 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:54:00,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 07:54:00,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:54:00,285 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:54:00,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:54:00,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1447986378, now seen corresponding path program 1 times [2023-12-19 07:54:00,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:54:00,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986462382] [2023-12-19 07:54:00,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:54:00,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:54:00,356 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:54:00,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1124544491] [2023-12-19 07:54:00,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:54:00,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:54:00,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:54:00,358 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:54:00,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 07:54:00,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:54:00,768 INFO L262 TraceCheckSpWp]: Trace formula consists of 1352 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:54:00,785 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:54:00,852 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2023-12-19 07:54:00,852 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:54:00,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:54:00,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986462382] [2023-12-19 07:54:00,853 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:54:00,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124544491] [2023-12-19 07:54:00,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124544491] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:54:00,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:54:00,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:54:00,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350733493] [2023-12-19 07:54:00,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:54:00,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:54:00,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:54:00,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:54:00,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:54:00,857 INFO L87 Difference]: Start difference. First operand 499 states and 873 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2023-12-19 07:54:00,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:54:00,918 INFO L93 Difference]: Finished difference Result 1361 states and 2393 transitions. [2023-12-19 07:54:00,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:54:00,919 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 583 [2023-12-19 07:54:00,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:54:00,927 INFO L225 Difference]: With dead ends: 1361 [2023-12-19 07:54:00,927 INFO L226 Difference]: Without dead ends: 863 [2023-12-19 07:54:00,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 582 GetRequests, 581 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:54:00,931 INFO L413 NwaCegarLoop]: 572 mSDtfsCounter, 326 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 1090 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:54:00,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [326 Valid, 1090 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:54:00,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2023-12-19 07:54:00,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 859. [2023-12-19 07:54:00,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 859 states, 701 states have (on average 1.7261055634807418) internal successors, (1210), 704 states have internal predecessors, (1210), 153 states have call successors, (153), 4 states have call predecessors, (153), 4 states have return successors, (153), 150 states have call predecessors, (153), 153 states have call successors, (153) [2023-12-19 07:54:00,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859 states to 859 states and 1516 transitions. [2023-12-19 07:54:00,988 INFO L78 Accepts]: Start accepts. Automaton has 859 states and 1516 transitions. Word has length 583 [2023-12-19 07:54:00,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:54:00,990 INFO L495 AbstractCegarLoop]: Abstraction has 859 states and 1516 transitions. [2023-12-19 07:54:00,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2023-12-19 07:54:00,990 INFO L276 IsEmpty]: Start isEmpty. Operand 859 states and 1516 transitions. [2023-12-19 07:54:00,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 584 [2023-12-19 07:54:00,995 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:54:00,996 INFO L195 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:54:01,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 07:54:01,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:54:01,205 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:54:01,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:54:01,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1407311628, now seen corresponding path program 1 times [2023-12-19 07:54:01,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:54:01,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432418729] [2023-12-19 07:54:01,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:54:01,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:54:01,268 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:54:01,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1988886910] [2023-12-19 07:54:01,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:54:01,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:54:01,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:54:01,270 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:54:01,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 07:54:01,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:54:01,604 INFO L262 TraceCheckSpWp]: Trace formula consists of 1353 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 07:54:01,612 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:54:01,710 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2023-12-19 07:54:01,711 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:54:01,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:54:01,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432418729] [2023-12-19 07:54:01,711 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:54:01,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988886910] [2023-12-19 07:54:01,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988886910] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:54:01,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:54:01,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 07:54:01,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133526606] [2023-12-19 07:54:01,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:54:01,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 07:54:01,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:54:01,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 07:54:01,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 07:54:01,723 INFO L87 Difference]: Start difference. First operand 859 states and 1516 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2023-12-19 07:54:01,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:54:01,964 INFO L93 Difference]: Finished difference Result 2107 states and 3718 transitions. [2023-12-19 07:54:01,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 07:54:01,965 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 583 [2023-12-19 07:54:01,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:54:01,972 INFO L225 Difference]: With dead ends: 2107 [2023-12-19 07:54:01,972 INFO L226 Difference]: Without dead ends: 1249 [2023-12-19 07:54:01,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 584 GetRequests, 581 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 07:54:01,975 INFO L413 NwaCegarLoop]: 616 mSDtfsCounter, 920 mSDsluCounter, 1041 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 920 SdHoareTripleChecker+Valid, 1657 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 07:54:01,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [920 Valid, 1657 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 07:54:01,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1249 states. [2023-12-19 07:54:02,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1249 to 755. [2023-12-19 07:54:02,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 755 states, 613 states have (on average 1.7292006525285482) internal successors, (1060), 615 states have internal predecessors, (1060), 136 states have call successors, (136), 5 states have call predecessors, (136), 5 states have return successors, (136), 134 states have call predecessors, (136), 136 states have call successors, (136) [2023-12-19 07:54:02,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755 states to 755 states and 1332 transitions. [2023-12-19 07:54:02,036 INFO L78 Accepts]: Start accepts. Automaton has 755 states and 1332 transitions. Word has length 583 [2023-12-19 07:54:02,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:54:02,037 INFO L495 AbstractCegarLoop]: Abstraction has 755 states and 1332 transitions. [2023-12-19 07:54:02,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2023-12-19 07:54:02,037 INFO L276 IsEmpty]: Start isEmpty. Operand 755 states and 1332 transitions. [2023-12-19 07:54:02,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 584 [2023-12-19 07:54:02,042 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:54:02,042 INFO L195 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:54:02,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 07:54:02,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:54:02,254 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:54:02,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:54:02,255 INFO L85 PathProgramCache]: Analyzing trace with hash 643672370, now seen corresponding path program 1 times [2023-12-19 07:54:02,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:54:02,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465215566] [2023-12-19 07:54:02,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:54:02,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:54:02,322 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:54:02,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [27104540] [2023-12-19 07:54:02,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:54:02,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:54:02,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:54:02,324 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:54:02,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 07:54:02,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:54:02,663 INFO L262 TraceCheckSpWp]: Trace formula consists of 1350 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 07:54:02,671 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:54:02,765 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2023-12-19 07:54:02,766 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:54:02,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:54:02,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465215566] [2023-12-19 07:54:02,766 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:54:02,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27104540] [2023-12-19 07:54:02,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27104540] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:54:02,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:54:02,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:54:02,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168797028] [2023-12-19 07:54:02,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:54:02,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:54:02,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:54:02,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:54:02,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:54:02,769 INFO L87 Difference]: Start difference. First operand 755 states and 1332 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2023-12-19 07:54:02,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:54:02,840 INFO L93 Difference]: Finished difference Result 1745 states and 3099 transitions. [2023-12-19 07:54:02,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:54:02,841 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 583 [2023-12-19 07:54:02,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:54:02,847 INFO L225 Difference]: With dead ends: 1745 [2023-12-19 07:54:02,847 INFO L226 Difference]: Without dead ends: 1044 [2023-12-19 07:54:02,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 582 GetRequests, 581 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:54:02,850 INFO L413 NwaCegarLoop]: 565 mSDtfsCounter, 328 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 1079 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:54:02,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 1079 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:54:02,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1044 states. [2023-12-19 07:54:02,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1044 to 1041. [2023-12-19 07:54:02,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1041 states, 882 states have (on average 1.746031746031746) internal successors, (1540), 885 states have internal predecessors, (1540), 151 states have call successors, (151), 7 states have call predecessors, (151), 7 states have return successors, (151), 148 states have call predecessors, (151), 151 states have call successors, (151) [2023-12-19 07:54:02,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 1041 states and 1842 transitions. [2023-12-19 07:54:02,912 INFO L78 Accepts]: Start accepts. Automaton has 1041 states and 1842 transitions. Word has length 583 [2023-12-19 07:54:02,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:54:02,913 INFO L495 AbstractCegarLoop]: Abstraction has 1041 states and 1842 transitions. [2023-12-19 07:54:02,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2023-12-19 07:54:02,913 INFO L276 IsEmpty]: Start isEmpty. Operand 1041 states and 1842 transitions. [2023-12-19 07:54:02,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 584 [2023-12-19 07:54:02,919 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:54:02,919 INFO L195 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:54:02,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 07:54:03,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:54:03,133 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:54:03,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:54:03,134 INFO L85 PathProgramCache]: Analyzing trace with hash -66438788, now seen corresponding path program 1 times [2023-12-19 07:54:03,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:54:03,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755644184] [2023-12-19 07:54:03,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:54:03,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:54:03,206 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:54:03,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1287926802] [2023-12-19 07:54:03,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:54:03,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:54:03,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:54:03,208 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:54:03,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 07:54:03,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:54:03,565 INFO L262 TraceCheckSpWp]: Trace formula consists of 1348 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:54:03,577 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:54:04,041 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 7108 proven. 174 refuted. 0 times theorem prover too weak. 8382 trivial. 0 not checked. [2023-12-19 07:54:04,041 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:54:04,421 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 90 proven. 174 refuted. 0 times theorem prover too weak. 15400 trivial. 0 not checked. [2023-12-19 07:54:04,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:54:04,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755644184] [2023-12-19 07:54:04,422 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:54:04,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287926802] [2023-12-19 07:54:04,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287926802] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:54:04,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:54:04,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 07:54:04,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834206396] [2023-12-19 07:54:04,423 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:54:04,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 07:54:04,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:54:04,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 07:54:04,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 07:54:04,425 INFO L87 Difference]: Start difference. First operand 1041 states and 1842 transitions. Second operand has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 7 states have internal predecessors, (150), 2 states have call successors, (147), 2 states have call predecessors, (147), 4 states have return successors, (148), 2 states have call predecessors, (148), 2 states have call successors, (148) [2023-12-19 07:54:04,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:54:04,952 INFO L93 Difference]: Finished difference Result 1739 states and 3045 transitions. [2023-12-19 07:54:04,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 07:54:04,955 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 7 states have internal predecessors, (150), 2 states have call successors, (147), 2 states have call predecessors, (147), 4 states have return successors, (148), 2 states have call predecessors, (148), 2 states have call successors, (148) Word has length 583 [2023-12-19 07:54:04,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:54:04,960 INFO L225 Difference]: With dead ends: 1739 [2023-12-19 07:54:04,960 INFO L226 Difference]: Without dead ends: 752 [2023-12-19 07:54:04,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1168 GetRequests, 1158 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-19 07:54:04,965 INFO L413 NwaCegarLoop]: 424 mSDtfsCounter, 338 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 1091 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 07:54:04,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 1091 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 07:54:04,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2023-12-19 07:54:05,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 738. [2023-12-19 07:54:05,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 738 states, 578 states have (on average 1.671280276816609) internal successors, (966), 581 states have internal predecessors, (966), 151 states have call successors, (151), 8 states have call predecessors, (151), 8 states have return successors, (151), 148 states have call predecessors, (151), 151 states have call successors, (151) [2023-12-19 07:54:05,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 1268 transitions. [2023-12-19 07:54:05,008 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 1268 transitions. Word has length 583 [2023-12-19 07:54:05,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:54:05,009 INFO L495 AbstractCegarLoop]: Abstraction has 738 states and 1268 transitions. [2023-12-19 07:54:05,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 7 states have internal predecessors, (150), 2 states have call successors, (147), 2 states have call predecessors, (147), 4 states have return successors, (148), 2 states have call predecessors, (148), 2 states have call successors, (148) [2023-12-19 07:54:05,009 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 1268 transitions. [2023-12-19 07:54:05,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 585 [2023-12-19 07:54:05,014 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:54:05,014 INFO L195 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:54:05,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-19 07:54:05,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:54:05,225 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:54:05,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:54:05,225 INFO L85 PathProgramCache]: Analyzing trace with hash -822652236, now seen corresponding path program 1 times [2023-12-19 07:54:05,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:54:05,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070125842] [2023-12-19 07:54:05,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:54:05,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:54:05,293 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:54:05,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1855425877] [2023-12-19 07:54:05,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:54:05,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:54:05,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:54:05,295 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) [2023-12-19 07:54:05,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 07:54:05,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:54:05,640 INFO L262 TraceCheckSpWp]: Trace formula consists of 1352 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:54:05,649 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:54:06,105 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 7320 proven. 168 refuted. 0 times theorem prover too weak. 8176 trivial. 0 not checked. [2023-12-19 07:54:06,105 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:54:06,520 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 96 proven. 168 refuted. 0 times theorem prover too weak. 15400 trivial. 0 not checked. [2023-12-19 07:54:06,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:54:06,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070125842] [2023-12-19 07:54:06,521 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:54:06,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855425877] [2023-12-19 07:54:06,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855425877] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:54:06,521 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:54:06,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-12-19 07:54:06,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206090370] [2023-12-19 07:54:06,522 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:54:06,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 07:54:06,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:54:06,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 07:54:06,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-19 07:54:06,524 INFO L87 Difference]: Start difference. First operand 738 states and 1268 transitions. Second operand has 8 states, 8 states have (on average 25.625) internal successors, (205), 8 states have internal predecessors, (205), 3 states have call successors, (145), 2 states have call predecessors, (145), 4 states have return successors, (146), 3 states have call predecessors, (146), 3 states have call successors, (146) [2023-12-19 07:54:07,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:54:07,101 INFO L93 Difference]: Finished difference Result 1440 states and 2471 transitions. [2023-12-19 07:54:07,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 07:54:07,102 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 25.625) internal successors, (205), 8 states have internal predecessors, (205), 3 states have call successors, (145), 2 states have call predecessors, (145), 4 states have return successors, (146), 3 states have call predecessors, (146), 3 states have call successors, (146) Word has length 584 [2023-12-19 07:54:07,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:54:07,108 INFO L225 Difference]: With dead ends: 1440 [2023-12-19 07:54:07,108 INFO L226 Difference]: Without dead ends: 756 [2023-12-19 07:54:07,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1170 GetRequests, 1160 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-12-19 07:54:07,111 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 898 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 930 SdHoareTripleChecker+Valid, 1025 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 07:54:07,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [930 Valid, 1025 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 07:54:07,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2023-12-19 07:54:07,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 742. [2023-12-19 07:54:07,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 742 states, 581 states have (on average 1.6523235800344234) internal successors, (960), 584 states have internal predecessors, (960), 151 states have call successors, (151), 9 states have call predecessors, (151), 9 states have return successors, (151), 148 states have call predecessors, (151), 151 states have call successors, (151) [2023-12-19 07:54:07,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 1262 transitions. [2023-12-19 07:54:07,155 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 1262 transitions. Word has length 584 [2023-12-19 07:54:07,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:54:07,155 INFO L495 AbstractCegarLoop]: Abstraction has 742 states and 1262 transitions. [2023-12-19 07:54:07,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 25.625) internal successors, (205), 8 states have internal predecessors, (205), 3 states have call successors, (145), 2 states have call predecessors, (145), 4 states have return successors, (146), 3 states have call predecessors, (146), 3 states have call successors, (146) [2023-12-19 07:54:07,156 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 1262 transitions. [2023-12-19 07:54:07,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 586 [2023-12-19 07:54:07,161 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:54:07,161 INFO L195 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:54:07,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-19 07:54:07,372 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 [2023-12-19 07:54:07,373 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:54:07,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:54:07,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1161399948, now seen corresponding path program 1 times [2023-12-19 07:54:07,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:54:07,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241734916] [2023-12-19 07:54:07,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:54:07,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:54:07,430 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:54:07,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [482993129] [2023-12-19 07:54:07,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:54:07,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:54:07,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:54:07,432 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) [2023-12-19 07:54:07,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 07:54:07,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:54:07,785 INFO L262 TraceCheckSpWp]: Trace formula consists of 1353 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:54:07,795 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:54:08,189 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 7680 proven. 108 refuted. 0 times theorem prover too weak. 7876 trivial. 0 not checked. [2023-12-19 07:54:08,190 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:54:08,608 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 156 proven. 108 refuted. 0 times theorem prover too weak. 15400 trivial. 0 not checked. [2023-12-19 07:54:08,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:54:08,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241734916] [2023-12-19 07:54:08,609 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:54:08,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482993129] [2023-12-19 07:54:08,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482993129] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:54:08,610 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:54:08,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-12-19 07:54:08,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262844384] [2023-12-19 07:54:08,610 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:54:08,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 07:54:08,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:54:08,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 07:54:08,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-19 07:54:08,614 INFO L87 Difference]: Start difference. First operand 742 states and 1262 transitions. Second operand has 8 states, 8 states have (on average 28.5) internal successors, (228), 8 states have internal predecessors, (228), 3 states have call successors, (125), 2 states have call predecessors, (125), 4 states have return successors, (126), 3 states have call predecessors, (126), 3 states have call successors, (126) [2023-12-19 07:54:09,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:54:09,136 INFO L93 Difference]: Finished difference Result 1448 states and 2459 transitions. [2023-12-19 07:54:09,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 07:54:09,137 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 28.5) internal successors, (228), 8 states have internal predecessors, (228), 3 states have call successors, (125), 2 states have call predecessors, (125), 4 states have return successors, (126), 3 states have call predecessors, (126), 3 states have call successors, (126) Word has length 585 [2023-12-19 07:54:09,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:54:09,142 INFO L225 Difference]: With dead ends: 1448 [2023-12-19 07:54:09,142 INFO L226 Difference]: Without dead ends: 760 [2023-12-19 07:54:09,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1172 GetRequests, 1162 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-12-19 07:54:09,144 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 581 mSDsluCounter, 657 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 1076 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 07:54:09,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [633 Valid, 1076 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 463 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 07:54:09,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2023-12-19 07:54:09,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 746. [2023-12-19 07:54:09,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 746 states, 584 states have (on average 1.6386986301369864) internal successors, (957), 587 states have internal predecessors, (957), 151 states have call successors, (151), 10 states have call predecessors, (151), 10 states have return successors, (151), 148 states have call predecessors, (151), 151 states have call successors, (151) [2023-12-19 07:54:09,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 1259 transitions. [2023-12-19 07:54:09,192 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 1259 transitions. Word has length 585 [2023-12-19 07:54:09,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:54:09,193 INFO L495 AbstractCegarLoop]: Abstraction has 746 states and 1259 transitions. [2023-12-19 07:54:09,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 28.5) internal successors, (228), 8 states have internal predecessors, (228), 3 states have call successors, (125), 2 states have call predecessors, (125), 4 states have return successors, (126), 3 states have call predecessors, (126), 3 states have call successors, (126) [2023-12-19 07:54:09,194 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 1259 transitions. [2023-12-19 07:54:09,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2023-12-19 07:54:09,198 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:54:09,199 INFO L195 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:54:09,212 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-19 07:54:09,400 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 [2023-12-19 07:54:09,401 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:54:09,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:54:09,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1938677414, now seen corresponding path program 1 times [2023-12-19 07:54:09,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:54:09,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153630483] [2023-12-19 07:54:09,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:54:09,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:54:09,468 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:54:09,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [67339593] [2023-12-19 07:54:09,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:54:09,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:54:09,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:54:09,471 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) [2023-12-19 07:54:09,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-19 07:54:09,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:54:09,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 1354 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:54:09,834 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:54:10,076 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 6360 proven. 72 refuted. 0 times theorem prover too weak. 9232 trivial. 0 not checked. [2023-12-19 07:54:10,077 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:54:10,429 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 192 proven. 72 refuted. 0 times theorem prover too weak. 15400 trivial. 0 not checked. [2023-12-19 07:54:10,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:54:10,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153630483] [2023-12-19 07:54:10,430 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:54:10,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67339593] [2023-12-19 07:54:10,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67339593] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:54:10,430 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:54:10,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-12-19 07:54:10,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980575876] [2023-12-19 07:54:10,432 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:54:10,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 07:54:10,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:54:10,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 07:54:10,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-19 07:54:10,435 INFO L87 Difference]: Start difference. First operand 746 states and 1259 transitions. Second operand has 8 states, 8 states have (on average 29.75) internal successors, (238), 8 states have internal predecessors, (238), 3 states have call successors, (113), 2 states have call predecessors, (113), 4 states have return successors, (114), 3 states have call predecessors, (114), 3 states have call successors, (114) [2023-12-19 07:54:10,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:54:10,936 INFO L93 Difference]: Finished difference Result 1458 states and 2455 transitions. [2023-12-19 07:54:10,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 07:54:10,937 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 29.75) internal successors, (238), 8 states have internal predecessors, (238), 3 states have call successors, (113), 2 states have call predecessors, (113), 4 states have return successors, (114), 3 states have call predecessors, (114), 3 states have call successors, (114) Word has length 586 [2023-12-19 07:54:10,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:54:10,945 INFO L225 Difference]: With dead ends: 1458 [2023-12-19 07:54:10,945 INFO L226 Difference]: Without dead ends: 766 [2023-12-19 07:54:10,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1175 GetRequests, 1164 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=95, Unknown=0, NotChecked=0, Total=156 [2023-12-19 07:54:10,948 INFO L413 NwaCegarLoop]: 411 mSDtfsCounter, 574 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 637 SdHoareTripleChecker+Valid, 1053 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 07:54:10,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [637 Valid, 1053 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 07:54:10,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2023-12-19 07:54:10,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 750. [2023-12-19 07:54:10,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 750 states, 587 states have (on average 1.6303236797274276) internal successors, (957), 590 states have internal predecessors, (957), 151 states have call successors, (151), 11 states have call predecessors, (151), 11 states have return successors, (151), 148 states have call predecessors, (151), 151 states have call successors, (151) [2023-12-19 07:54:10,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 1259 transitions. [2023-12-19 07:54:10,995 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 1259 transitions. Word has length 586 [2023-12-19 07:54:10,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:54:10,996 INFO L495 AbstractCegarLoop]: Abstraction has 750 states and 1259 transitions. [2023-12-19 07:54:10,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 29.75) internal successors, (238), 8 states have internal predecessors, (238), 3 states have call successors, (113), 2 states have call predecessors, (113), 4 states have return successors, (114), 3 states have call predecessors, (114), 3 states have call successors, (114) [2023-12-19 07:54:10,997 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 1259 transitions. [2023-12-19 07:54:11,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2023-12-19 07:54:11,002 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:54:11,002 INFO L195 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:54:11,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-19 07:54:11,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-19 07:54:11,218 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:54:11,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:54:11,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1933588056, now seen corresponding path program 1 times [2023-12-19 07:54:11,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:54:11,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557969339] [2023-12-19 07:54:11,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:54:11,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:54:11,267 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:54:11,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [687361426] [2023-12-19 07:54:11,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:54:11,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:54:11,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:54:11,271 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:54:11,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-19 07:54:11,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:54:11,618 INFO L262 TraceCheckSpWp]: Trace formula consists of 1354 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:54:11,626 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:54:11,844 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 4138 proven. 39 refuted. 0 times theorem prover too weak. 11487 trivial. 0 not checked. [2023-12-19 07:54:11,845 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:54:12,219 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 225 proven. 39 refuted. 0 times theorem prover too weak. 15400 trivial. 0 not checked. [2023-12-19 07:54:12,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:54:12,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557969339] [2023-12-19 07:54:12,219 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:54:12,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687361426] [2023-12-19 07:54:12,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687361426] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:54:12,219 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:54:12,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 07:54:12,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183605878] [2023-12-19 07:54:12,220 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:54:12,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 07:54:12,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:54:12,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 07:54:12,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 07:54:12,222 INFO L87 Difference]: Start difference. First operand 750 states and 1259 transitions. Second operand has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 7 states have internal predecessors, (153), 2 states have call successors, (102), 2 states have call predecessors, (102), 4 states have return successors, (103), 2 states have call predecessors, (103), 2 states have call successors, (103) [2023-12-19 07:54:12,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:54:12,765 INFO L93 Difference]: Finished difference Result 1466 states and 2455 transitions. [2023-12-19 07:54:12,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 07:54:12,767 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 7 states have internal predecessors, (153), 2 states have call successors, (102), 2 states have call predecessors, (102), 4 states have return successors, (103), 2 states have call predecessors, (103), 2 states have call successors, (103) Word has length 586 [2023-12-19 07:54:12,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:54:12,773 INFO L225 Difference]: With dead ends: 1466 [2023-12-19 07:54:12,773 INFO L226 Difference]: Without dead ends: 770 [2023-12-19 07:54:12,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1174 GetRequests, 1164 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-19 07:54:12,776 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 596 mSDsluCounter, 656 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 670 SdHoareTripleChecker+Valid, 1075 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 07:54:12,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [670 Valid, 1075 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 07:54:12,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2023-12-19 07:54:12,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 754. [2023-12-19 07:54:12,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 590 states have (on average 1.6220338983050848) internal successors, (957), 593 states have internal predecessors, (957), 151 states have call successors, (151), 12 states have call predecessors, (151), 12 states have return successors, (151), 148 states have call predecessors, (151), 151 states have call successors, (151) [2023-12-19 07:54:12,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1259 transitions. [2023-12-19 07:54:12,825 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1259 transitions. Word has length 586 [2023-12-19 07:54:12,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:54:12,826 INFO L495 AbstractCegarLoop]: Abstraction has 754 states and 1259 transitions. [2023-12-19 07:54:12,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 7 states have internal predecessors, (153), 2 states have call successors, (102), 2 states have call predecessors, (102), 4 states have return successors, (103), 2 states have call predecessors, (103), 2 states have call successors, (103) [2023-12-19 07:54:12,827 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1259 transitions. [2023-12-19 07:54:12,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2023-12-19 07:54:12,831 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:54:12,832 INFO L195 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:54:12,844 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-19 07:54:13,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-19 07:54:13,037 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:54:13,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:54:13,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1714733338, now seen corresponding path program 1 times [2023-12-19 07:54:13,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:54:13,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196439459] [2023-12-19 07:54:13,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:54:13,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:54:13,084 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:54:13,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [610081452] [2023-12-19 07:54:13,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:54:13,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:54:13,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:54:13,086 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:54:13,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-19 07:54:13,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:54:13,430 INFO L262 TraceCheckSpWp]: Trace formula consists of 1353 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 07:54:13,441 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:54:13,574 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2023-12-19 07:54:13,574 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:54:13,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:54:13,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196439459] [2023-12-19 07:54:13,574 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:54:13,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610081452] [2023-12-19 07:54:13,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610081452] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:54:13,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:54:13,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 07:54:13,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427924668] [2023-12-19 07:54:13,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:54:13,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 07:54:13,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:54:13,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 07:54:13,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-19 07:54:13,577 INFO L87 Difference]: Start difference. First operand 754 states and 1259 transitions. Second operand has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2023-12-19 07:54:13,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:54:13,866 INFO L93 Difference]: Finished difference Result 1680 states and 2783 transitions. [2023-12-19 07:54:13,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 07:54:13,867 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 586 [2023-12-19 07:54:13,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:54:13,872 INFO L225 Difference]: With dead ends: 1680 [2023-12-19 07:54:13,872 INFO L226 Difference]: Without dead ends: 980 [2023-12-19 07:54:13,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 589 GetRequests, 580 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-12-19 07:54:13,875 INFO L413 NwaCegarLoop]: 510 mSDtfsCounter, 184 mSDsluCounter, 1074 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 1584 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 07:54:13,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 1584 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 07:54:13,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2023-12-19 07:54:13,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 934. [2023-12-19 07:54:13,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 934 states, 752 states have (on average 1.6117021276595744) internal successors, (1212), 758 states have internal predecessors, (1212), 166 states have call successors, (166), 15 states have call predecessors, (166), 15 states have return successors, (166), 160 states have call predecessors, (166), 166 states have call successors, (166) [2023-12-19 07:54:13,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 934 states to 934 states and 1544 transitions. [2023-12-19 07:54:13,931 INFO L78 Accepts]: Start accepts. Automaton has 934 states and 1544 transitions. Word has length 586 [2023-12-19 07:54:13,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:54:13,932 INFO L495 AbstractCegarLoop]: Abstraction has 934 states and 1544 transitions. [2023-12-19 07:54:13,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2023-12-19 07:54:13,932 INFO L276 IsEmpty]: Start isEmpty. Operand 934 states and 1544 transitions. [2023-12-19 07:54:13,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2023-12-19 07:54:13,937 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:54:13,937 INFO L195 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:54:13,948 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-19 07:54:14,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-19 07:54:14,146 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:54:14,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:54:14,147 INFO L85 PathProgramCache]: Analyzing trace with hash 991886056, now seen corresponding path program 1 times [2023-12-19 07:54:14,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:54:14,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968100109] [2023-12-19 07:54:14,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:54:14,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:54:14,193 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:54:14,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [200280471] [2023-12-19 07:54:14,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:54:14,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:54:14,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:54:14,195 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:54:14,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-19 07:54:14,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:54:14,555 INFO L262 TraceCheckSpWp]: Trace formula consists of 1353 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 07:54:14,567 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:54:14,707 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2023-12-19 07:54:14,707 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:54:14,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:54:14,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968100109] [2023-12-19 07:54:14,707 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:54:14,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200280471] [2023-12-19 07:54:14,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200280471] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:54:14,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:54:14,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 07:54:14,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546262513] [2023-12-19 07:54:14,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:54:14,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 07:54:14,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:54:14,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 07:54:14,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-19 07:54:14,710 INFO L87 Difference]: Start difference. First operand 934 states and 1544 transitions. Second operand has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2023-12-19 07:54:15,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:54:15,022 INFO L93 Difference]: Finished difference Result 1866 states and 3074 transitions. [2023-12-19 07:54:15,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 07:54:15,023 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 586 [2023-12-19 07:54:15,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:54:15,029 INFO L225 Difference]: With dead ends: 1866 [2023-12-19 07:54:15,029 INFO L226 Difference]: Without dead ends: 986 [2023-12-19 07:54:15,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 589 GetRequests, 580 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-12-19 07:54:15,033 INFO L413 NwaCegarLoop]: 537 mSDtfsCounter, 129 mSDsluCounter, 1567 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 2104 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 07:54:15,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 2104 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 07:54:15,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2023-12-19 07:54:15,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 880. [2023-12-19 07:54:15,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 880 states, 698 states have (on average 1.6031518624641834) internal successors, (1119), 704 states have internal predecessors, (1119), 166 states have call successors, (166), 15 states have call predecessors, (166), 15 states have return successors, (166), 160 states have call predecessors, (166), 166 states have call successors, (166) [2023-12-19 07:54:15,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1451 transitions. [2023-12-19 07:54:15,148 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1451 transitions. Word has length 586 [2023-12-19 07:54:15,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:54:15,149 INFO L495 AbstractCegarLoop]: Abstraction has 880 states and 1451 transitions. [2023-12-19 07:54:15,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2023-12-19 07:54:15,150 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1451 transitions. [2023-12-19 07:54:15,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2023-12-19 07:54:15,157 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:54:15,157 INFO L195 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:54:15,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-19 07:54:15,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-19 07:54:15,366 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:54:15,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:54:15,366 INFO L85 PathProgramCache]: Analyzing trace with hash 891290216, now seen corresponding path program 1 times [2023-12-19 07:54:15,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:54:15,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807322758] [2023-12-19 07:54:15,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:54:15,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:54:15,423 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:54:15,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1167402175] [2023-12-19 07:54:15,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:54:15,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:54:15,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:54:15,425 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:54:15,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-19 07:54:15,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:54:15,796 INFO L262 TraceCheckSpWp]: Trace formula consists of 1351 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 07:54:15,806 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:54:15,968 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2023-12-19 07:54:15,968 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:54:15,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:54:15,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807322758] [2023-12-19 07:54:15,968 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:54:15,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167402175] [2023-12-19 07:54:15,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167402175] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:54:15,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:54:15,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 07:54:15,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372684704] [2023-12-19 07:54:15,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:54:15,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 07:54:15,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:54:15,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 07:54:15,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-19 07:54:15,971 INFO L87 Difference]: Start difference. First operand 880 states and 1451 transitions. Second operand has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2023-12-19 07:54:16,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:54:16,242 INFO L93 Difference]: Finished difference Result 1809 states and 2978 transitions. [2023-12-19 07:54:16,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 07:54:16,243 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 586 [2023-12-19 07:54:16,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:54:16,249 INFO L225 Difference]: With dead ends: 1809 [2023-12-19 07:54:16,249 INFO L226 Difference]: Without dead ends: 983 [2023-12-19 07:54:16,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 589 GetRequests, 580 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-12-19 07:54:16,252 INFO L413 NwaCegarLoop]: 538 mSDtfsCounter, 169 mSDsluCounter, 1085 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 1623 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 07:54:16,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 1623 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 07:54:16,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 983 states. [2023-12-19 07:54:16,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 983 to 940. [2023-12-19 07:54:16,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 940 states, 758 states have (on average 1.6068601583113455) internal successors, (1218), 764 states have internal predecessors, (1218), 166 states have call successors, (166), 15 states have call predecessors, (166), 15 states have return successors, (166), 160 states have call predecessors, (166), 166 states have call successors, (166) [2023-12-19 07:54:16,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 1550 transitions. [2023-12-19 07:54:16,315 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 1550 transitions. Word has length 586 [2023-12-19 07:54:16,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:54:16,316 INFO L495 AbstractCegarLoop]: Abstraction has 940 states and 1550 transitions. [2023-12-19 07:54:16,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2023-12-19 07:54:16,317 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 1550 transitions. [2023-12-19 07:54:16,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2023-12-19 07:54:16,323 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:54:16,324 INFO L195 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:54:16,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-19 07:54:16,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:54:16,533 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:54:16,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:54:16,534 INFO L85 PathProgramCache]: Analyzing trace with hash -697057686, now seen corresponding path program 1 times [2023-12-19 07:54:16,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:54:16,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273727645] [2023-12-19 07:54:16,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:54:16,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:54:16,584 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:54:16,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [209982965] [2023-12-19 07:54:16,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:54:16,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:54:16,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:54:16,586 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:54:16,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-19 07:54:16,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:54:16,976 INFO L262 TraceCheckSpWp]: Trace formula consists of 1351 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 07:54:16,986 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:54:17,192 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2023-12-19 07:54:17,192 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:54:17,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:54:17,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273727645] [2023-12-19 07:54:17,193 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:54:17,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209982965] [2023-12-19 07:54:17,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [209982965] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:54:17,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:54:17,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 07:54:17,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796074863] [2023-12-19 07:54:17,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:54:17,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 07:54:17,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:54:17,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 07:54:17,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-19 07:54:17,195 INFO L87 Difference]: Start difference. First operand 940 states and 1550 transitions. Second operand has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2023-12-19 07:54:17,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:54:17,543 INFO L93 Difference]: Finished difference Result 1875 states and 3083 transitions. [2023-12-19 07:54:17,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 07:54:17,544 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 586 [2023-12-19 07:54:17,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:54:17,549 INFO L225 Difference]: With dead ends: 1875 [2023-12-19 07:54:17,549 INFO L226 Difference]: Without dead ends: 989 [2023-12-19 07:54:17,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 589 GetRequests, 580 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-12-19 07:54:17,552 INFO L413 NwaCegarLoop]: 568 mSDtfsCounter, 91 mSDsluCounter, 2079 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 2647 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 07:54:17,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 2647 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 07:54:17,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 989 states. [2023-12-19 07:54:17,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 989 to 886. [2023-12-19 07:54:17,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 886 states, 704 states have (on average 1.5980113636363635) internal successors, (1125), 710 states have internal predecessors, (1125), 166 states have call successors, (166), 15 states have call predecessors, (166), 15 states have return successors, (166), 160 states have call predecessors, (166), 166 states have call successors, (166) [2023-12-19 07:54:17,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 886 states to 886 states and 1457 transitions. [2023-12-19 07:54:17,604 INFO L78 Accepts]: Start accepts. Automaton has 886 states and 1457 transitions. Word has length 586 [2023-12-19 07:54:17,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:54:17,605 INFO L495 AbstractCegarLoop]: Abstraction has 886 states and 1457 transitions. [2023-12-19 07:54:17,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2023-12-19 07:54:17,605 INFO L276 IsEmpty]: Start isEmpty. Operand 886 states and 1457 transitions. [2023-12-19 07:54:17,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 589 [2023-12-19 07:54:17,610 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:54:17,610 INFO L195 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:54:17,623 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-19 07:54:17,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-19 07:54:17,819 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:54:17,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:54:17,819 INFO L85 PathProgramCache]: Analyzing trace with hash -565775381, now seen corresponding path program 1 times [2023-12-19 07:54:17,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:54:17,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884504218] [2023-12-19 07:54:17,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:54:17,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:54:17,865 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:54:17,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1303608769] [2023-12-19 07:54:17,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:54:17,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:54:17,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:54:17,867 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:54:17,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-19 07:54:18,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:54:18,261 INFO L262 TraceCheckSpWp]: Trace formula consists of 1357 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 07:54:18,271 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:54:18,603 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 7890 proven. 123 refuted. 0 times theorem prover too weak. 7651 trivial. 0 not checked. [2023-12-19 07:54:18,603 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:54:18,928 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 141 proven. 123 refuted. 0 times theorem prover too weak. 15400 trivial. 0 not checked. [2023-12-19 07:54:18,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:54:18,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884504218] [2023-12-19 07:54:18,928 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:54:18,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303608769] [2023-12-19 07:54:18,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303608769] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:54:18,929 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:54:18,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-12-19 07:54:18,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465890401] [2023-12-19 07:54:18,929 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:54:18,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 07:54:18,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:54:18,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 07:54:18,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-19 07:54:18,931 INFO L87 Difference]: Start difference. First operand 886 states and 1457 transitions. Second operand has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 2 states have call successors, (130), 2 states have call predecessors, (130), 4 states have return successors, (131), 2 states have call predecessors, (131), 2 states have call successors, (131) [2023-12-19 07:54:19,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:54:19,533 INFO L93 Difference]: Finished difference Result 1740 states and 2853 transitions. [2023-12-19 07:54:19,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 07:54:19,534 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 2 states have call successors, (130), 2 states have call predecessors, (130), 4 states have return successors, (131), 2 states have call predecessors, (131), 2 states have call successors, (131) Word has length 588 [2023-12-19 07:54:19,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:54:19,540 INFO L225 Difference]: With dead ends: 1740 [2023-12-19 07:54:19,540 INFO L226 Difference]: Without dead ends: 908 [2023-12-19 07:54:19,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1182 GetRequests, 1167 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2023-12-19 07:54:19,542 INFO L413 NwaCegarLoop]: 414 mSDtfsCounter, 622 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 293 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 1061 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 293 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 07:54:19,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [624 Valid, 1061 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [293 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 07:54:19,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2023-12-19 07:54:19,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 890. [2023-12-19 07:54:19,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 890 states, 707 states have (on average 1.586987270155587) internal successors, (1122), 713 states have internal predecessors, (1122), 166 states have call successors, (166), 16 states have call predecessors, (166), 16 states have return successors, (166), 160 states have call predecessors, (166), 166 states have call successors, (166) [2023-12-19 07:54:19,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 890 states to 890 states and 1454 transitions. [2023-12-19 07:54:19,603 INFO L78 Accepts]: Start accepts. Automaton has 890 states and 1454 transitions. Word has length 588 [2023-12-19 07:54:19,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:54:19,604 INFO L495 AbstractCegarLoop]: Abstraction has 890 states and 1454 transitions. [2023-12-19 07:54:19,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 2 states have call successors, (130), 2 states have call predecessors, (130), 4 states have return successors, (131), 2 states have call predecessors, (131), 2 states have call successors, (131) [2023-12-19 07:54:19,605 INFO L276 IsEmpty]: Start isEmpty. Operand 890 states and 1454 transitions. [2023-12-19 07:54:19,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 589 [2023-12-19 07:54:19,609 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:54:19,610 INFO L195 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:54:19,618 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-19 07:54:19,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-19 07:54:19,818 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:54:19,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:54:19,819 INFO L85 PathProgramCache]: Analyzing trace with hash -121874707, now seen corresponding path program 1 times [2023-12-19 07:54:19,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:54:19,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979988698] [2023-12-19 07:54:19,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:54:19,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:54:19,875 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:54:19,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [133925093] [2023-12-19 07:54:19,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:54:19,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:54:19,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:54:19,877 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:54:19,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-19 07:54:20,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:54:20,328 INFO L262 TraceCheckSpWp]: Trace formula consists of 1356 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 07:54:20,337 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:54:20,967 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2023-12-19 07:54:20,967 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:54:20,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:54:20,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979988698] [2023-12-19 07:54:20,968 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:54:20,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133925093] [2023-12-19 07:54:20,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133925093] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:54:20,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:54:20,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 07:54:20,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345510784] [2023-12-19 07:54:20,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:54:20,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 07:54:20,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:54:20,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 07:54:20,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 07:54:20,971 INFO L87 Difference]: Start difference. First operand 890 states and 1454 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2023-12-19 07:54:21,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:54:21,595 INFO L93 Difference]: Finished difference Result 2920 states and 4792 transitions. [2023-12-19 07:54:21,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 07:54:21,596 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 588 [2023-12-19 07:54:21,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:54:21,607 INFO L225 Difference]: With dead ends: 2920 [2023-12-19 07:54:21,607 INFO L226 Difference]: Without dead ends: 2084 [2023-12-19 07:54:21,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 588 GetRequests, 584 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-19 07:54:21,610 INFO L413 NwaCegarLoop]: 884 mSDtfsCounter, 1005 mSDsluCounter, 735 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1005 SdHoareTripleChecker+Valid, 1619 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 07:54:21,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1005 Valid, 1619 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 07:54:21,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2084 states. [2023-12-19 07:54:21,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2084 to 1721. [2023-12-19 07:54:21,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1721 states, 1388 states have (on average 1.5893371757925072) internal successors, (2206), 1399 states have internal predecessors, (2206), 302 states have call successors, (302), 30 states have call predecessors, (302), 30 states have return successors, (302), 291 states have call predecessors, (302), 302 states have call successors, (302) [2023-12-19 07:54:21,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1721 states to 1721 states and 2810 transitions. [2023-12-19 07:54:21,738 INFO L78 Accepts]: Start accepts. Automaton has 1721 states and 2810 transitions. Word has length 588 [2023-12-19 07:54:21,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:54:21,739 INFO L495 AbstractCegarLoop]: Abstraction has 1721 states and 2810 transitions. [2023-12-19 07:54:21,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2023-12-19 07:54:21,739 INFO L276 IsEmpty]: Start isEmpty. Operand 1721 states and 2810 transitions. [2023-12-19 07:54:21,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 589 [2023-12-19 07:54:21,745 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:54:21,745 INFO L195 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:54:21,754 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-19 07:54:21,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-19 07:54:21,955 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:54:21,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:54:21,956 INFO L85 PathProgramCache]: Analyzing trace with hash -631347797, now seen corresponding path program 1 times [2023-12-19 07:54:21,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:54:21,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127169301] [2023-12-19 07:54:21,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:54:21,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:54:22,004 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:54:22,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1146801661] [2023-12-19 07:54:22,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:54:22,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:54:22,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:54:22,006 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:54:22,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-19 07:54:22,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:54:22,399 INFO L262 TraceCheckSpWp]: Trace formula consists of 1357 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 07:54:22,407 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:54:22,459 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2023-12-19 07:54:22,460 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:54:22,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:54:22,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127169301] [2023-12-19 07:54:22,460 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:54:22,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146801661] [2023-12-19 07:54:22,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146801661] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:54:22,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:54:22,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 07:54:22,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213233009] [2023-12-19 07:54:22,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:54:22,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 07:54:22,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:54:22,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 07:54:22,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 07:54:22,462 INFO L87 Difference]: Start difference. First operand 1721 states and 2810 transitions. Second operand has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 6 states have internal predecessors, (146), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2023-12-19 07:54:22,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:54:22,778 INFO L93 Difference]: Finished difference Result 3790 states and 6082 transitions. [2023-12-19 07:54:22,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 07:54:22,779 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 6 states have internal predecessors, (146), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 588 [2023-12-19 07:54:22,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:54:22,789 INFO L225 Difference]: With dead ends: 3790 [2023-12-19 07:54:22,789 INFO L226 Difference]: Without dead ends: 2123 [2023-12-19 07:54:22,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 589 GetRequests, 583 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-19 07:54:22,794 INFO L413 NwaCegarLoop]: 503 mSDtfsCounter, 45 mSDsluCounter, 1959 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 2462 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 07:54:22,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 2462 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 07:54:22,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2123 states. [2023-12-19 07:54:22,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2123 to 2013. [2023-12-19 07:54:22,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2013 states, 1643 states have (on average 1.548995739500913) internal successors, (2545), 1666 states have internal predecessors, (2545), 326 states have call successors, (326), 43 states have call predecessors, (326), 43 states have return successors, (326), 303 states have call predecessors, (326), 326 states have call successors, (326) [2023-12-19 07:54:22,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2013 states to 2013 states and 3197 transitions. [2023-12-19 07:54:22,975 INFO L78 Accepts]: Start accepts. Automaton has 2013 states and 3197 transitions. Word has length 588 [2023-12-19 07:54:22,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:54:22,976 INFO L495 AbstractCegarLoop]: Abstraction has 2013 states and 3197 transitions. [2023-12-19 07:54:22,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 6 states have internal predecessors, (146), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2023-12-19 07:54:22,976 INFO L276 IsEmpty]: Start isEmpty. Operand 2013 states and 3197 transitions. [2023-12-19 07:54:22,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 589 [2023-12-19 07:54:22,983 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:54:22,984 INFO L195 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:54:22,996 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-19 07:54:23,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-19 07:54:23,195 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:54:23,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:54:23,196 INFO L85 PathProgramCache]: Analyzing trace with hash 885023787, now seen corresponding path program 1 times [2023-12-19 07:54:23,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:54:23,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669452364] [2023-12-19 07:54:23,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:54:23,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:54:23,241 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:54:23,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [128984565] [2023-12-19 07:54:23,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:54:23,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:54:23,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:54:23,243 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:54:23,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-19 07:54:23,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:54:23,629 INFO L262 TraceCheckSpWp]: Trace formula consists of 1358 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:54:23,637 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:54:23,667 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2023-12-19 07:54:23,668 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:54:23,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:54:23,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669452364] [2023-12-19 07:54:23,668 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:54:23,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128984565] [2023-12-19 07:54:23,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128984565] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:54:23,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:54:23,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:54:23,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019084017] [2023-12-19 07:54:23,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:54:23,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:54:23,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:54:23,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:54:23,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:54:23,670 INFO L87 Difference]: Start difference. First operand 2013 states and 3197 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2023-12-19 07:54:23,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:54:23,926 INFO L93 Difference]: Finished difference Result 5887 states and 9361 transitions. [2023-12-19 07:54:23,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:54:23,926 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 588 [2023-12-19 07:54:23,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:54:23,945 INFO L225 Difference]: With dead ends: 5887 [2023-12-19 07:54:23,945 INFO L226 Difference]: Without dead ends: 3932 [2023-12-19 07:54:23,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 587 GetRequests, 586 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:54:23,951 INFO L413 NwaCegarLoop]: 508 mSDtfsCounter, 498 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:54:23,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [498 Valid, 1007 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:54:23,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3932 states. [2023-12-19 07:54:24,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3932 to 2433. [2023-12-19 07:54:24,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2433 states, 2063 states have (on average 1.541929229277751) internal successors, (3181), 2086 states have internal predecessors, (3181), 326 states have call successors, (326), 43 states have call predecessors, (326), 43 states have return successors, (326), 303 states have call predecessors, (326), 326 states have call successors, (326) [2023-12-19 07:54:24,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2433 states to 2433 states and 3833 transitions. [2023-12-19 07:54:24,156 INFO L78 Accepts]: Start accepts. Automaton has 2433 states and 3833 transitions. Word has length 588 [2023-12-19 07:54:24,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:54:24,157 INFO L495 AbstractCegarLoop]: Abstraction has 2433 states and 3833 transitions. [2023-12-19 07:54:24,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2023-12-19 07:54:24,158 INFO L276 IsEmpty]: Start isEmpty. Operand 2433 states and 3833 transitions. [2023-12-19 07:54:24,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 589 [2023-12-19 07:54:24,166 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:54:24,166 INFO L195 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:54:24,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-19 07:54:24,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:54:24,377 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:54:24,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:54:24,377 INFO L85 PathProgramCache]: Analyzing trace with hash 886870829, now seen corresponding path program 1 times [2023-12-19 07:54:24,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:54:24,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722683584] [2023-12-19 07:54:24,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:54:24,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:54:24,419 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:54:24,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1894920602] [2023-12-19 07:54:24,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:54:24,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:54:24,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:54:24,421 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:54:24,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-19 07:54:24,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:54:24,850 INFO L262 TraceCheckSpWp]: Trace formula consists of 1356 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 07:54:24,859 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:54:26,421 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 6992 proven. 378 refuted. 0 times theorem prover too weak. 8294 trivial. 0 not checked. [2023-12-19 07:54:26,422 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:54:26,649 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2023-12-19 07:54:26,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:54:26,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722683584] [2023-12-19 07:54:26,650 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:54:26,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894920602] [2023-12-19 07:54:26,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894920602] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 07:54:26,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 07:54:26,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2023-12-19 07:54:26,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951906284] [2023-12-19 07:54:26,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:54:26,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 07:54:26,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:54:26,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 07:54:26,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2023-12-19 07:54:26,652 INFO L87 Difference]: Start difference. First operand 2433 states and 3833 transitions. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2023-12-19 07:54:26,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:54:26,970 INFO L93 Difference]: Finished difference Result 6837 states and 10799 transitions. [2023-12-19 07:54:26,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 07:54:26,971 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 588 [2023-12-19 07:54:26,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:54:26,989 INFO L225 Difference]: With dead ends: 6837 [2023-12-19 07:54:26,989 INFO L226 Difference]: Without dead ends: 4462 [2023-12-19 07:54:26,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1174 GetRequests, 1161 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2023-12-19 07:54:26,994 INFO L413 NwaCegarLoop]: 776 mSDtfsCounter, 320 mSDsluCounter, 939 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 1715 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 07:54:26,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 1715 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 07:54:26,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4462 states. [2023-12-19 07:54:27,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4462 to 4458. [2023-12-19 07:54:27,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4458 states, 3906 states have (on average 1.554531490015361) internal successors, (6072), 3953 states have internal predecessors, (6072), 482 states have call successors, (482), 69 states have call predecessors, (482), 69 states have return successors, (482), 435 states have call predecessors, (482), 482 states have call successors, (482) [2023-12-19 07:54:27,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4458 states to 4458 states and 7036 transitions. [2023-12-19 07:54:27,272 INFO L78 Accepts]: Start accepts. Automaton has 4458 states and 7036 transitions. Word has length 588 [2023-12-19 07:54:27,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:54:27,273 INFO L495 AbstractCegarLoop]: Abstraction has 4458 states and 7036 transitions. [2023-12-19 07:54:27,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2023-12-19 07:54:27,273 INFO L276 IsEmpty]: Start isEmpty. Operand 4458 states and 7036 transitions. [2023-12-19 07:54:27,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 589 [2023-12-19 07:54:27,285 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:54:27,285 INFO L195 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:54:27,294 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-19 07:54:27,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:54:27,494 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:54:27,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:54:27,494 INFO L85 PathProgramCache]: Analyzing trace with hash -10522449, now seen corresponding path program 1 times [2023-12-19 07:54:27,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:54:27,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852836708] [2023-12-19 07:54:27,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:54:27,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:54:27,549 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:54:27,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1654170431] [2023-12-19 07:54:27,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:54:27,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:54:27,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:54:27,551 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:54:27,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-19 07:54:27,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:54:27,947 INFO L262 TraceCheckSpWp]: Trace formula consists of 1354 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 07:54:27,955 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:54:28,269 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2023-12-19 07:54:28,269 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:54:28,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:54:28,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852836708] [2023-12-19 07:54:28,269 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:54:28,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654170431] [2023-12-19 07:54:28,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654170431] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:54:28,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:54:28,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 07:54:28,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240082688] [2023-12-19 07:54:28,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:54:28,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 07:54:28,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:54:28,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 07:54:28,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 07:54:28,272 INFO L87 Difference]: Start difference. First operand 4458 states and 7036 transitions. Second operand has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 6 states have internal predecessors, (146), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2023-12-19 07:54:30,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:54:30,265 INFO L93 Difference]: Finished difference Result 22300 states and 34520 transitions. [2023-12-19 07:54:30,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 07:54:30,266 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 6 states have internal predecessors, (146), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 588 [2023-12-19 07:54:30,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:54:30,339 INFO L225 Difference]: With dead ends: 22300 [2023-12-19 07:54:30,339 INFO L226 Difference]: Without dead ends: 17900 [2023-12-19 07:54:30,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 601 GetRequests, 590 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2023-12-19 07:54:30,352 INFO L413 NwaCegarLoop]: 593 mSDtfsCounter, 2563 mSDsluCounter, 2404 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2563 SdHoareTripleChecker+Valid, 2997 SdHoareTripleChecker+Invalid, 1208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:54:30,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2563 Valid, 2997 Invalid, 1208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 660 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 07:54:30,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17900 states. [2023-12-19 07:54:30,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17900 to 5153. [2023-12-19 07:54:30,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5153 states, 4607 states have (on average 1.5891035380942045) internal successors, (7321), 4654 states have internal predecessors, (7321), 473 states have call successors, (473), 72 states have call predecessors, (473), 72 states have return successors, (473), 426 states have call predecessors, (473), 473 states have call successors, (473) [2023-12-19 07:54:30,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5153 states to 5153 states and 8267 transitions. [2023-12-19 07:54:30,796 INFO L78 Accepts]: Start accepts. Automaton has 5153 states and 8267 transitions. Word has length 588 [2023-12-19 07:54:30,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:54:30,797 INFO L495 AbstractCegarLoop]: Abstraction has 5153 states and 8267 transitions. [2023-12-19 07:54:30,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 6 states have internal predecessors, (146), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2023-12-19 07:54:30,797 INFO L276 IsEmpty]: Start isEmpty. Operand 5153 states and 8267 transitions. [2023-12-19 07:54:30,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 589 [2023-12-19 07:54:30,808 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:54:30,808 INFO L195 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:54:30,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-12-19 07:54:31,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:54:31,018 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:54:31,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:54:31,018 INFO L85 PathProgramCache]: Analyzing trace with hash 865496557, now seen corresponding path program 1 times [2023-12-19 07:54:31,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:54:31,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747973009] [2023-12-19 07:54:31,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:54:31,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:54:31,068 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:54:31,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [67376394] [2023-12-19 07:54:31,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:54:31,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:54:31,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:54:31,070 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:54:31,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-19 07:54:31,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:54:31,497 INFO L262 TraceCheckSpWp]: Trace formula consists of 1352 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-19 07:54:31,505 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:54:34,189 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 7578 proven. 159 refuted. 0 times theorem prover too weak. 7927 trivial. 0 not checked. [2023-12-19 07:54:34,190 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:54:35,273 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2023-12-19 07:54:35,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:54:35,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747973009] [2023-12-19 07:54:35,273 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:54:35,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67376394] [2023-12-19 07:54:35,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67376394] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 07:54:35,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 07:54:35,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [12] total 22 [2023-12-19 07:54:35,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16617409] [2023-12-19 07:54:35,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:54:35,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-19 07:54:35,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:54:35,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-19 07:54:35,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2023-12-19 07:54:35,275 INFO L87 Difference]: Start difference. First operand 5153 states and 8267 transitions. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2023-12-19 07:54:40,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:54:40,443 INFO L93 Difference]: Finished difference Result 41727 states and 65642 transitions. [2023-12-19 07:54:40,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-19 07:54:40,444 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 588 [2023-12-19 07:54:40,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:54:40,540 INFO L225 Difference]: With dead ends: 41727 [2023-12-19 07:54:40,540 INFO L226 Difference]: Without dead ends: 36609 [2023-12-19 07:54:40,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1192 GetRequests, 1163 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=272, Invalid=658, Unknown=0, NotChecked=0, Total=930 [2023-12-19 07:54:40,564 INFO L413 NwaCegarLoop]: 619 mSDtfsCounter, 5104 mSDsluCounter, 4070 mSDsCounter, 0 mSdLazyCounter, 1630 mSolverCounterSat, 731 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5104 SdHoareTripleChecker+Valid, 4689 SdHoareTripleChecker+Invalid, 2361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 731 IncrementalHoareTripleChecker+Valid, 1630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-19 07:54:40,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5104 Valid, 4689 Invalid, 2361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [731 Valid, 1630 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-19 07:54:40,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36609 states. [2023-12-19 07:54:41,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36609 to 9277. [2023-12-19 07:54:41,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9277 states, 8355 states have (on average 1.580490724117295) internal successors, (13205), 8450 states have internal predecessors, (13205), 793 states have call successors, (793), 128 states have call predecessors, (793), 128 states have return successors, (793), 698 states have call predecessors, (793), 793 states have call successors, (793) [2023-12-19 07:54:41,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9277 states to 9277 states and 14791 transitions. [2023-12-19 07:54:41,629 INFO L78 Accepts]: Start accepts. Automaton has 9277 states and 14791 transitions. Word has length 588 [2023-12-19 07:54:41,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:54:41,630 INFO L495 AbstractCegarLoop]: Abstraction has 9277 states and 14791 transitions. [2023-12-19 07:54:41,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2023-12-19 07:54:41,630 INFO L276 IsEmpty]: Start isEmpty. Operand 9277 states and 14791 transitions. [2023-12-19 07:54:41,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 589 [2023-12-19 07:54:41,647 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:54:41,647 INFO L195 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:54:41,657 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-12-19 07:54:41,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:54:41,857 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:54:41,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:54:41,858 INFO L85 PathProgramCache]: Analyzing trace with hash -2043267345, now seen corresponding path program 1 times [2023-12-19 07:54:41,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:54:41,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131821513] [2023-12-19 07:54:41,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:54:41,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:54:41,899 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:54:41,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [118984306] [2023-12-19 07:54:41,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:54:41,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:54:41,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:54:41,901 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:54:41,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-19 07:54:42,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:54:42,365 INFO L262 TraceCheckSpWp]: Trace formula consists of 1350 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-19 07:54:42,371 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:54:42,944 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2023-12-19 07:54:42,944 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:54:42,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:54:42,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131821513] [2023-12-19 07:54:42,945 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:54:42,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118984306] [2023-12-19 07:54:42,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118984306] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:54:42,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:54:42,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 07:54:42,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737151127] [2023-12-19 07:54:42,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:54:42,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 07:54:42,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:54:42,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 07:54:42,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-19 07:54:42,947 INFO L87 Difference]: Start difference. First operand 9277 states and 14791 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2023-12-19 07:54:45,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:54:45,370 INFO L93 Difference]: Finished difference Result 42590 states and 67924 transitions. [2023-12-19 07:54:45,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 07:54:45,371 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 588 [2023-12-19 07:54:45,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:54:45,449 INFO L225 Difference]: With dead ends: 42590 [2023-12-19 07:54:45,449 INFO L226 Difference]: Without dead ends: 33348 [2023-12-19 07:54:45,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 587 GetRequests, 584 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-19 07:54:45,474 INFO L413 NwaCegarLoop]: 729 mSDtfsCounter, 957 mSDsluCounter, 1273 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 957 SdHoareTripleChecker+Valid, 2002 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 07:54:45,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [957 Valid, 2002 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 07:54:45,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33348 states. [2023-12-19 07:54:47,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33348 to 32977. [2023-12-19 07:54:47,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32977 states, 29861 states have (on average 1.580288670841566) internal successors, (47189), 30210 states have internal predecessors, (47189), 2669 states have call successors, (2669), 446 states have call predecessors, (2669), 446 states have return successors, (2669), 2320 states have call predecessors, (2669), 2669 states have call successors, (2669) [2023-12-19 07:54:47,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32977 states to 32977 states and 52527 transitions. [2023-12-19 07:54:47,972 INFO L78 Accepts]: Start accepts. Automaton has 32977 states and 52527 transitions. Word has length 588 [2023-12-19 07:54:47,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:54:47,973 INFO L495 AbstractCegarLoop]: Abstraction has 32977 states and 52527 transitions. [2023-12-19 07:54:47,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2023-12-19 07:54:47,973 INFO L276 IsEmpty]: Start isEmpty. Operand 32977 states and 52527 transitions. [2023-12-19 07:54:48,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 589 [2023-12-19 07:54:48,017 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:54:48,018 INFO L195 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:54:48,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-12-19 07:54:48,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:54:48,228 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:54:48,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:54:48,229 INFO L85 PathProgramCache]: Analyzing trace with hash 990782701, now seen corresponding path program 1 times [2023-12-19 07:54:48,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:54:48,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483824219] [2023-12-19 07:54:48,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:54:48,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:54:48,273 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:54:48,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1209942191] [2023-12-19 07:54:48,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:54:48,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:54:48,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:54:48,276 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:54:48,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-19 07:54:48,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:54:48,797 INFO L262 TraceCheckSpWp]: Trace formula consists of 1351 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 07:54:48,804 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:54:50,015 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 7320 proven. 168 refuted. 0 times theorem prover too weak. 8176 trivial. 0 not checked. [2023-12-19 07:54:50,016 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:54:50,662 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 96 proven. 168 refuted. 0 times theorem prover too weak. 15400 trivial. 0 not checked. [2023-12-19 07:54:50,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:54:50,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483824219] [2023-12-19 07:54:50,662 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:54:50,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209942191] [2023-12-19 07:54:50,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209942191] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:54:50,663 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:54:50,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2023-12-19 07:54:50,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852342292] [2023-12-19 07:54:50,663 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:54:50,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 07:54:50,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:54:50,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 07:54:50,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-12-19 07:54:50,666 INFO L87 Difference]: Start difference. First operand 32977 states and 52527 transitions. Second operand has 12 states, 12 states have (on average 19.75) internal successors, (237), 12 states have internal predecessors, (237), 4 states have call successors, (178), 3 states have call predecessors, (178), 5 states have return successors, (178), 4 states have call predecessors, (178), 4 states have call successors, (178) [2023-12-19 07:55:09,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:55:09,272 INFO L93 Difference]: Finished difference Result 263549 states and 416976 transitions. [2023-12-19 07:55:09,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-19 07:55:09,273 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 19.75) internal successors, (237), 12 states have internal predecessors, (237), 4 states have call successors, (178), 3 states have call predecessors, (178), 5 states have return successors, (178), 4 states have call predecessors, (178), 4 states have call successors, (178) Word has length 588 [2023-12-19 07:55:09,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:55:10,145 INFO L225 Difference]: With dead ends: 263549 [2023-12-19 07:55:10,145 INFO L226 Difference]: Without dead ends: 230607 [2023-12-19 07:55:10,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1207 GetRequests, 1171 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 425 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=442, Invalid=964, Unknown=0, NotChecked=0, Total=1406 [2023-12-19 07:55:10,252 INFO L413 NwaCegarLoop]: 865 mSDtfsCounter, 3066 mSDsluCounter, 4695 mSDsCounter, 0 mSdLazyCounter, 4467 mSolverCounterSat, 911 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3221 SdHoareTripleChecker+Valid, 5560 SdHoareTripleChecker+Invalid, 5378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 911 IncrementalHoareTripleChecker+Valid, 4467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-19 07:55:10,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3221 Valid, 5560 Invalid, 5378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [911 Valid, 4467 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-19 07:55:10,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230607 states. [2023-12-19 07:55:19,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230607 to 114731. [2023-12-19 07:55:19,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114731 states, 104125 states have (on average 1.5810708283313326) internal successors, (164629), 105330 states have internal predecessors, (164629), 9077 states have call successors, (9077), 1528 states have call predecessors, (9077), 1528 states have return successors, (9077), 7872 states have call predecessors, (9077), 9077 states have call successors, (9077) [2023-12-19 07:55:20,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114731 states to 114731 states and 182783 transitions. [2023-12-19 07:55:20,277 INFO L78 Accepts]: Start accepts. Automaton has 114731 states and 182783 transitions. Word has length 588 [2023-12-19 07:55:20,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:55:20,277 INFO L495 AbstractCegarLoop]: Abstraction has 114731 states and 182783 transitions. [2023-12-19 07:55:20,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.75) internal successors, (237), 12 states have internal predecessors, (237), 4 states have call successors, (178), 3 states have call predecessors, (178), 5 states have return successors, (178), 4 states have call predecessors, (178), 4 states have call successors, (178) [2023-12-19 07:55:20,278 INFO L276 IsEmpty]: Start isEmpty. Operand 114731 states and 182783 transitions. [2023-12-19 07:55:20,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 589 [2023-12-19 07:55:20,635 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:55:20,635 INFO L195 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:55:20,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-12-19 07:55:20,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:55:20,845 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:55:20,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:55:20,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1086554197, now seen corresponding path program 1 times [2023-12-19 07:55:20,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:55:20,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542431109] [2023-12-19 07:55:20,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:55:20,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:55:20,885 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:55:20,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [832411555] [2023-12-19 07:55:20,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:55:20,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:55:20,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:55:20,887 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:55:20,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-19 07:55:21,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:55:21,360 INFO L262 TraceCheckSpWp]: Trace formula consists of 1351 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-19 07:55:21,366 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:55:21,737 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 7680 proven. 108 refuted. 0 times theorem prover too weak. 7876 trivial. 0 not checked. [2023-12-19 07:55:21,737 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:55:22,539 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 156 proven. 108 refuted. 0 times theorem prover too weak. 15400 trivial. 0 not checked. [2023-12-19 07:55:22,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:55:22,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542431109] [2023-12-19 07:55:22,539 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:55:22,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832411555] [2023-12-19 07:55:22,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [832411555] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:55:22,539 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:55:22,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-19 07:55:22,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274761759] [2023-12-19 07:55:22,540 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:55:22,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 07:55:22,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:55:22,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 07:55:22,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-12-19 07:55:22,543 INFO L87 Difference]: Start difference. First operand 114731 states and 182783 transitions. Second operand has 12 states, 12 states have (on average 19.75) internal successors, (237), 12 states have internal predecessors, (237), 3 states have call successors, (125), 2 states have call predecessors, (125), 4 states have return successors, (126), 3 states have call predecessors, (126), 3 states have call successors, (126) [2023-12-19 07:55:31,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:55:31,747 INFO L93 Difference]: Finished difference Result 230720 states and 366825 transitions. [2023-12-19 07:55:31,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-19 07:55:31,747 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 19.75) internal successors, (237), 12 states have internal predecessors, (237), 3 states have call successors, (125), 2 states have call predecessors, (125), 4 states have return successors, (126), 3 states have call predecessors, (126), 3 states have call successors, (126) Word has length 588 [2023-12-19 07:55:31,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:55:31,999 INFO L225 Difference]: With dead ends: 230720 [2023-12-19 07:55:31,999 INFO L226 Difference]: Without dead ends: 116024 [2023-12-19 07:55:32,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1186 GetRequests, 1164 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2023-12-19 07:55:32,097 INFO L413 NwaCegarLoop]: 492 mSDtfsCounter, 873 mSDsluCounter, 1594 mSDsCounter, 0 mSdLazyCounter, 1450 mSolverCounterSat, 443 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 925 SdHoareTripleChecker+Valid, 2086 SdHoareTripleChecker+Invalid, 1893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 443 IncrementalHoareTripleChecker+Valid, 1450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-19 07:55:32,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [925 Valid, 2086 Invalid, 1893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [443 Valid, 1450 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-19 07:55:32,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116024 states. [2023-12-19 07:55:39,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116024 to 114779. [2023-12-19 07:55:40,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114779 states, 104161 states have (on average 1.5779514405583663) internal successors, (164361), 105366 states have internal predecessors, (164361), 9077 states have call successors, (9077), 1540 states have call predecessors, (9077), 1540 states have return successors, (9077), 7872 states have call predecessors, (9077), 9077 states have call successors, (9077) [2023-12-19 07:55:40,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114779 states to 114779 states and 182515 transitions. [2023-12-19 07:55:40,488 INFO L78 Accepts]: Start accepts. Automaton has 114779 states and 182515 transitions. Word has length 588 [2023-12-19 07:55:40,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:55:40,490 INFO L495 AbstractCegarLoop]: Abstraction has 114779 states and 182515 transitions. [2023-12-19 07:55:40,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.75) internal successors, (237), 12 states have internal predecessors, (237), 3 states have call successors, (125), 2 states have call predecessors, (125), 4 states have return successors, (126), 3 states have call predecessors, (126), 3 states have call successors, (126) [2023-12-19 07:55:40,490 INFO L276 IsEmpty]: Start isEmpty. Operand 114779 states and 182515 transitions. [2023-12-19 07:55:40,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 592 [2023-12-19 07:55:40,576 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:55:40,576 INFO L195 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:55:40,587 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-12-19 07:55:40,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-12-19 07:55:40,788 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:55:40,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:55:40,788 INFO L85 PathProgramCache]: Analyzing trace with hash -196245948, now seen corresponding path program 1 times [2023-12-19 07:55:40,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:55:40,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180344506] [2023-12-19 07:55:40,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:55:40,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:55:40,858 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:55:40,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1445770025] [2023-12-19 07:55:40,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:55:40,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:55:40,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:55:40,859 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:55:40,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-19 07:55:41,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:55:41,371 INFO L262 TraceCheckSpWp]: Trace formula consists of 1357 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:55:41,377 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:55:41,748 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2023-12-19 07:55:41,748 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:55:41,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:55:41,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180344506] [2023-12-19 07:55:41,749 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:55:41,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445770025] [2023-12-19 07:55:41,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445770025] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:55:41,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:55:41,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 07:55:41,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099904232] [2023-12-19 07:55:41,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:55:41,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 07:55:41,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:55:41,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 07:55:41,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 07:55:41,751 INFO L87 Difference]: Start difference. First operand 114779 states and 182515 transitions. Second operand has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2023-12-19 07:55:57,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:55:57,768 INFO L93 Difference]: Finished difference Result 327294 states and 518879 transitions. [2023-12-19 07:55:57,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 07:55:57,769 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 591 [2023-12-19 07:55:57,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:55:58,410 INFO L225 Difference]: With dead ends: 327294 [2023-12-19 07:55:58,411 INFO L226 Difference]: Without dead ends: 212550 [2023-12-19 07:55:58,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 590 GetRequests, 587 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 07:55:58,512 INFO L413 NwaCegarLoop]: 1306 mSDtfsCounter, 1347 mSDsluCounter, 1157 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1347 SdHoareTripleChecker+Valid, 2463 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 07:55:58,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1347 Valid, 2463 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 07:55:58,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212550 states. [2023-12-19 07:56:12,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212550 to 172728. [2023-12-19 07:56:12,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172728 states, 155980 states have (on average 1.5670085908449802) internal successors, (244422), 157813 states have internal predecessors, (244422), 14321 states have call successors, (14321), 2426 states have call predecessors, (14321), 2426 states have return successors, (14321), 12488 states have call predecessors, (14321), 14321 states have call successors, (14321) [2023-12-19 07:56:13,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172728 states to 172728 states and 273064 transitions. [2023-12-19 07:56:13,058 INFO L78 Accepts]: Start accepts. Automaton has 172728 states and 273064 transitions. Word has length 591 [2023-12-19 07:56:13,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:56:13,058 INFO L495 AbstractCegarLoop]: Abstraction has 172728 states and 273064 transitions. [2023-12-19 07:56:13,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2023-12-19 07:56:13,059 INFO L276 IsEmpty]: Start isEmpty. Operand 172728 states and 273064 transitions. [2023-12-19 07:56:13,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 593 [2023-12-19 07:56:13,157 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:56:13,157 INFO L195 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:56:13,167 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-12-19 07:56:13,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-19 07:56:13,358 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:56:13,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:56:13,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1908369061, now seen corresponding path program 1 times [2023-12-19 07:56:13,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:56:13,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250260694] [2023-12-19 07:56:13,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:56:13,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:56:13,408 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:56:13,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [995759785] [2023-12-19 07:56:13,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:56:13,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:56:13,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:56:13,410 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:56:13,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-12-19 07:56:14,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:56:14,249 INFO L262 TraceCheckSpWp]: Trace formula consists of 1358 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 07:56:14,254 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:56:14,283 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2023-12-19 07:56:14,284 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:56:14,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:56:14,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250260694] [2023-12-19 07:56:14,284 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:56:14,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995759785] [2023-12-19 07:56:14,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995759785] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:56:14,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:56:14,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 07:56:14,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296458512] [2023-12-19 07:56:14,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:56:14,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 07:56:14,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:56:14,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 07:56:14,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-19 07:56:14,285 INFO L87 Difference]: Start difference. First operand 172728 states and 273064 transitions. Second operand has 5 states, 5 states have (on average 30.0) internal successors, (150), 5 states have internal predecessors, (150), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89)