/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-77.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 20:13:59,803 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 20:13:59,873 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 20:13:59,876 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 20:13:59,877 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 20:13:59,898 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 20:13:59,899 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 20:13:59,899 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 20:13:59,899 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 20:13:59,902 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 20:13:59,902 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 20:13:59,903 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 20:13:59,903 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 20:13:59,904 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 20:13:59,904 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 20:13:59,905 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 20:13:59,905 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 20:13:59,905 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 20:13:59,905 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 20:13:59,905 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 20:13:59,905 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 20:13:59,906 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 20:13:59,906 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 20:13:59,906 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 20:13:59,906 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 20:13:59,906 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 20:13:59,906 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 20:13:59,906 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 20:13:59,907 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 20:13:59,907 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 20:13:59,908 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 20:13:59,908 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 20:13:59,908 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 20:13:59,908 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 20:13:59,908 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 20:13:59,908 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 20:13:59,908 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 20:13:59,909 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 20:13:59,909 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 20:13:59,909 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 20:13:59,909 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 20:13:59,909 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 20:13:59,909 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 20:13:59,909 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 20:14:00,090 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 20:14:00,108 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 20:14:00,110 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 20:14:00,110 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 20:14:00,110 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 20:14:00,111 INFO L431 ainManager$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-77.i [2023-12-20 20:14:01,024 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 20:14:01,203 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 20:14:01,204 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-77.i [2023-12-20 20:14:01,213 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2622295bb/50020dc203cc403cbc3d8f654374af4a/FLAGe7a7b22a6 [2023-12-20 20:14:01,221 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2622295bb/50020dc203cc403cbc3d8f654374af4a [2023-12-20 20:14:01,223 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 20:14:01,224 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 20:14:01,225 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 20:14:01,225 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 20:14:01,228 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 20:14:01,228 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 08:14:01" (1/1) ... [2023-12-20 20:14:01,229 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@253dafdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:14:01, skipping insertion in model container [2023-12-20 20:14:01,229 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 08:14:01" (1/1) ... [2023-12-20 20:14:01,268 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 20:14:01,356 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-77.i[916,929] [2023-12-20 20:14:01,475 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 20:14:01,486 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 20:14:01,493 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-77.i[916,929] [2023-12-20 20:14:01,562 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 20:14:01,590 INFO L206 MainTranslator]: Completed translation [2023-12-20 20:14:01,591 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:14:01 WrapperNode [2023-12-20 20:14:01,591 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 20:14:01,591 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 20:14:01,592 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 20:14:01,592 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 20:14:01,596 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:14:01" (1/1) ... [2023-12-20 20:14:01,613 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:14:01" (1/1) ... [2023-12-20 20:14:01,712 INFO L138 Inliner]: procedures = 26, calls = 111, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 739 [2023-12-20 20:14:01,713 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 20:14:01,714 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 20:14:01,714 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 20:14:01,714 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 20:14:01,721 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:14:01" (1/1) ... [2023-12-20 20:14:01,721 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:14:01" (1/1) ... [2023-12-20 20:14:01,737 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:14:01" (1/1) ... [2023-12-20 20:14:01,763 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]. [2023-12-20 20:14:01,763 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:14:01" (1/1) ... [2023-12-20 20:14:01,763 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:14:01" (1/1) ... [2023-12-20 20:14:01,792 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:14:01" (1/1) ... [2023-12-20 20:14:01,809 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:14:01" (1/1) ... [2023-12-20 20:14:01,819 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:14:01" (1/1) ... [2023-12-20 20:14:01,836 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:14:01" (1/1) ... [2023-12-20 20:14:01,853 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 20:14:01,854 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 20:14:01,854 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 20:14:01,854 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 20:14:01,855 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:14:01" (1/1) ... [2023-12-20 20:14:01,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 20:14:01,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:14:01,876 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) [2023-12-20 20:14:01,884 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 [2023-12-20 20:14:01,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 20:14:01,897 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-20 20:14:01,897 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-20 20:14:01,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 20:14:01,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 20:14:01,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 20:14:02,010 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 20:14:02,011 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 20:14:02,675 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 20:14:02,708 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 20:14:02,708 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 20:14:02,708 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 08:14:02 BoogieIcfgContainer [2023-12-20 20:14:02,709 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 20:14:02,710 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 20:14:02,710 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 20:14:02,712 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 20:14:02,712 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 08:14:01" (1/3) ... [2023-12-20 20:14:02,713 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@86d421a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 08:14:02, skipping insertion in model container [2023-12-20 20:14:02,713 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:14:01" (2/3) ... [2023-12-20 20:14:02,714 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@86d421a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 08:14:02, skipping insertion in model container [2023-12-20 20:14:02,714 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 08:14:02" (3/3) ... [2023-12-20 20:14:02,715 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-77.i [2023-12-20 20:14:02,726 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 20:14:02,727 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 20:14:02,770 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 20:14:02,775 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;@1a7b4962, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 20:14:02,775 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 20:14:02,782 INFO L276 IsEmpty]: Start isEmpty. Operand has 298 states, 197 states have (on average 1.614213197969543) internal successors, (318), 198 states have internal predecessors, (318), 98 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 98 states have call predecessors, (98), 98 states have call successors, (98) [2023-12-20 20:14:02,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 635 [2023-12-20 20:14:02,819 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:14:02,820 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:14:02,821 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:14:02,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:14:02,826 INFO L85 PathProgramCache]: Analyzing trace with hash -2011727605, now seen corresponding path program 1 times [2023-12-20 20:14:02,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:14:02,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741349599] [2023-12-20 20:14:02,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:14:02,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:14:03,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:14:03,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:14:03,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741349599] [2023-12-20 20:14:03,152 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-20 20:14:03,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975807235] [2023-12-20 20:14:03,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:14:03,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:14:03,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:14:03,161 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) [2023-12-20 20:14:03,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 20:14:03,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:14:03,476 INFO L262 TraceCheckSpWp]: Trace formula consists of 1448 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-20 20:14:03,498 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:14:03,602 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 18818 trivial. 0 not checked. [2023-12-20 20:14:03,603 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 20:14:03,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1975807235] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 20:14:03,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 20:14:03,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 20:14:03,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137686045] [2023-12-20 20:14:03,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 20:14:03,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 20:14:03,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:14:03,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 20:14:03,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 20:14:03,642 INFO L87 Difference]: Start difference. First operand has 298 states, 197 states have (on average 1.614213197969543) internal successors, (318), 198 states have internal predecessors, (318), 98 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 98 states have call predecessors, (98), 98 states have call successors, (98) Second operand has 2 states, 2 states have (on average 74.5) internal successors, (149), 2 states have internal predecessors, (149), 2 states have call successors, (98), 2 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 2 states have call successors, (98) [2023-12-20 20:14:03,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:14:03,714 INFO L93 Difference]: Finished difference Result 591 states and 1120 transitions. [2023-12-20 20:14:03,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 20:14:03,716 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 74.5) internal successors, (149), 2 states have internal predecessors, (149), 2 states have call successors, (98), 2 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 2 states have call successors, (98) Word has length 634 [2023-12-20 20:14:03,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:14:03,729 INFO L225 Difference]: With dead ends: 591 [2023-12-20 20:14:03,729 INFO L226 Difference]: Without dead ends: 294 [2023-12-20 20:14:03,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 633 GetRequests, 633 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 20:14:03,739 INFO L413 NwaCegarLoop]: 499 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, 499 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 [2023-12-20 20:14:03,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 499 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 20:14:03,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2023-12-20 20:14:03,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2023-12-20 20:14:03,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 194 states have (on average 1.577319587628866) internal successors, (306), 194 states have internal predecessors, (306), 98 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 98 states have call predecessors, (98), 98 states have call successors, (98) [2023-12-20 20:14:03,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 502 transitions. [2023-12-20 20:14:03,803 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 502 transitions. Word has length 634 [2023-12-20 20:14:03,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:14:03,803 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 502 transitions. [2023-12-20 20:14:03,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 74.5) internal successors, (149), 2 states have internal predecessors, (149), 2 states have call successors, (98), 2 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 2 states have call successors, (98) [2023-12-20 20:14:03,804 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 502 transitions. [2023-12-20 20:14:03,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 636 [2023-12-20 20:14:03,813 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:14:03,814 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:14:03,825 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-20 20:14:04,021 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 [2023-12-20 20:14:04,022 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:14:04,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:14:04,022 INFO L85 PathProgramCache]: Analyzing trace with hash -474700778, now seen corresponding path program 1 times [2023-12-20 20:14:04,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:14:04,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30629004] [2023-12-20 20:14:04,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:14:04,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:14:04,113 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:14:04,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [558344203] [2023-12-20 20:14:04,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:14:04,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:14:04,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:14:04,116 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) [2023-12-20 20:14:04,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 20:14:04,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:14:04,423 INFO L262 TraceCheckSpWp]: Trace formula consists of 1451 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 20:14:04,430 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:14:04,485 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2023-12-20 20:14:04,485 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 20:14:04,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:14:04,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30629004] [2023-12-20 20:14:04,486 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:14:04,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558344203] [2023-12-20 20:14:04,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558344203] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 20:14:04,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 20:14:04,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 20:14:04,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461313033] [2023-12-20 20:14:04,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 20:14:04,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 20:14:04,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:14:04,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 20:14:04,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 20:14:04,491 INFO L87 Difference]: Start difference. First operand 294 states and 502 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-20 20:14:04,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:14:04,587 INFO L93 Difference]: Finished difference Result 586 states and 1001 transitions. [2023-12-20 20:14:04,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 20:14:04,589 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 635 [2023-12-20 20:14:04,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:14:04,593 INFO L225 Difference]: With dead ends: 586 [2023-12-20 20:14:04,593 INFO L226 Difference]: Without dead ends: 293 [2023-12-20 20:14:04,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 634 GetRequests, 633 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 20:14:04,596 INFO L413 NwaCegarLoop]: 495 mSDtfsCounter, 3 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 20:14:04,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 986 Invalid, 8 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 20:14:04,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2023-12-20 20:14:04,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2023-12-20 20:14:04,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 193 states have (on average 1.5699481865284974) internal successors, (303), 193 states have internal predecessors, (303), 98 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 98 states have call predecessors, (98), 98 states have call successors, (98) [2023-12-20 20:14:04,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 499 transitions. [2023-12-20 20:14:04,628 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 499 transitions. Word has length 635 [2023-12-20 20:14:04,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:14:04,630 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 499 transitions. [2023-12-20 20:14:04,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-20 20:14:04,630 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 499 transitions. [2023-12-20 20:14:04,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 636 [2023-12-20 20:14:04,634 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:14:04,634 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:14:04,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 20:14:04,844 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 [2023-12-20 20:14:04,845 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:14:04,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:14:04,846 INFO L85 PathProgramCache]: Analyzing trace with hash -467074282, now seen corresponding path program 1 times [2023-12-20 20:14:04,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:14:04,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784183195] [2023-12-20 20:14:04,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:14:04,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:14:04,911 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:14:04,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [748721698] [2023-12-20 20:14:04,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:14:04,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:14:04,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:14:04,914 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) [2023-12-20 20:14:04,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 20:14:05,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:14:05,201 INFO L262 TraceCheckSpWp]: Trace formula consists of 1451 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 20:14:05,207 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:14:05,284 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2023-12-20 20:14:05,284 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 20:14:05,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:14:05,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784183195] [2023-12-20 20:14:05,284 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:14:05,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748721698] [2023-12-20 20:14:05,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748721698] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 20:14:05,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 20:14:05,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 20:14:05,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812352177] [2023-12-20 20:14:05,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 20:14:05,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 20:14:05,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:14:05,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 20:14:05,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 20:14:05,287 INFO L87 Difference]: Start difference. First operand 293 states and 499 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-20 20:14:05,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:14:05,345 INFO L93 Difference]: Finished difference Result 772 states and 1319 transitions. [2023-12-20 20:14:05,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 20:14:05,345 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 635 [2023-12-20 20:14:05,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:14:05,352 INFO L225 Difference]: With dead ends: 772 [2023-12-20 20:14:05,352 INFO L226 Difference]: Without dead ends: 480 [2023-12-20 20:14:05,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 634 GetRequests, 633 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 20:14:05,355 INFO L413 NwaCegarLoop]: 487 mSDtfsCounter, 264 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 967 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 20:14:05,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 967 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 20:14:05,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2023-12-20 20:14:05,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 477. [2023-12-20 20:14:05,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 333 states have (on average 1.6066066066066067) internal successors, (535), 334 states have internal predecessors, (535), 141 states have call successors, (141), 2 states have call predecessors, (141), 2 states have return successors, (141), 140 states have call predecessors, (141), 141 states have call successors, (141) [2023-12-20 20:14:05,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 817 transitions. [2023-12-20 20:14:05,392 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 817 transitions. Word has length 635 [2023-12-20 20:14:05,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:14:05,395 INFO L495 AbstractCegarLoop]: Abstraction has 477 states and 817 transitions. [2023-12-20 20:14:05,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-20 20:14:05,395 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 817 transitions. [2023-12-20 20:14:05,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 636 [2023-12-20 20:14:05,401 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:14:05,401 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:14:05,410 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 20:14:05,608 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 [2023-12-20 20:14:05,608 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:14:05,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:14:05,609 INFO L85 PathProgramCache]: Analyzing trace with hash -248219564, now seen corresponding path program 1 times [2023-12-20 20:14:05,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:14:05,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771161804] [2023-12-20 20:14:05,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:14:05,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:14:05,684 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:14:05,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [732228581] [2023-12-20 20:14:05,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:14:05,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:14:05,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:14:05,685 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) [2023-12-20 20:14:05,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 20:14:05,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:14:05,995 INFO L262 TraceCheckSpWp]: Trace formula consists of 1452 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 20:14:06,004 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:14:06,093 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2023-12-20 20:14:06,094 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 20:14:06,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:14:06,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771161804] [2023-12-20 20:14:06,094 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:14:06,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732228581] [2023-12-20 20:14:06,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732228581] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 20:14:06,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 20:14:06,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 20:14:06,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247991130] [2023-12-20 20:14:06,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 20:14:06,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 20:14:06,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:14:06,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 20:14:06,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 20:14:06,097 INFO L87 Difference]: Start difference. First operand 477 states and 817 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-20 20:14:06,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:14:06,164 INFO L93 Difference]: Finished difference Result 1298 states and 2227 transitions. [2023-12-20 20:14:06,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 20:14:06,165 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 635 [2023-12-20 20:14:06,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:14:06,171 INFO L225 Difference]: With dead ends: 1298 [2023-12-20 20:14:06,171 INFO L226 Difference]: Without dead ends: 822 [2023-12-20 20:14:06,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 634 GetRequests, 633 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 20:14:06,176 INFO L413 NwaCegarLoop]: 608 mSDtfsCounter, 250 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 1077 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 20:14:06,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 1077 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 20:14:06,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2023-12-20 20:14:06,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 818. [2023-12-20 20:14:06,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 818 states, 590 states have (on average 1.6152542372881356) internal successors, (953), 593 states have internal predecessors, (953), 223 states have call successors, (223), 4 states have call predecessors, (223), 4 states have return successors, (223), 220 states have call predecessors, (223), 223 states have call successors, (223) [2023-12-20 20:14:06,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 1399 transitions. [2023-12-20 20:14:06,227 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 1399 transitions. Word has length 635 [2023-12-20 20:14:06,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:14:06,229 INFO L495 AbstractCegarLoop]: Abstraction has 818 states and 1399 transitions. [2023-12-20 20:14:06,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-20 20:14:06,229 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 1399 transitions. [2023-12-20 20:14:06,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 636 [2023-12-20 20:14:06,233 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:14:06,234 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:14:06,241 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-20 20:14:06,441 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 [2023-12-20 20:14:06,441 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:14:06,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:14:06,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1269287918, now seen corresponding path program 1 times [2023-12-20 20:14:06,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:14:06,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662453059] [2023-12-20 20:14:06,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:14:06,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:14:06,481 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:14:06,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1985304060] [2023-12-20 20:14:06,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:14:06,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:14:06,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:14:06,483 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) [2023-12-20 20:14:06,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 20:14:06,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:14:06,792 INFO L262 TraceCheckSpWp]: Trace formula consists of 1453 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 20:14:06,800 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:14:06,831 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2023-12-20 20:14:06,831 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 20:14:06,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:14:06,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662453059] [2023-12-20 20:14:06,832 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:14:06,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985304060] [2023-12-20 20:14:06,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1985304060] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 20:14:06,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 20:14:06,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 20:14:06,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973553386] [2023-12-20 20:14:06,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 20:14:06,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 20:14:06,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:14:06,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 20:14:06,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 20:14:06,844 INFO L87 Difference]: Start difference. First operand 818 states and 1399 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-20 20:14:06,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:14:06,921 INFO L93 Difference]: Finished difference Result 2237 states and 3814 transitions. [2023-12-20 20:14:06,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 20:14:06,922 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 635 [2023-12-20 20:14:06,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:14:06,929 INFO L225 Difference]: With dead ends: 2237 [2023-12-20 20:14:06,929 INFO L226 Difference]: Without dead ends: 1420 [2023-12-20 20:14:06,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 634 GetRequests, 633 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 20:14:06,932 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 327 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 993 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 20:14:06,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [327 Valid, 993 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 20:14:06,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1420 states. [2023-12-20 20:14:07,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1420 to 1417. [2023-12-20 20:14:07,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1417 states, 977 states have (on average 1.5680655066530194) internal successors, (1532), 984 states have internal predecessors, (1532), 431 states have call successors, (431), 8 states have call predecessors, (431), 8 states have return successors, (431), 424 states have call predecessors, (431), 431 states have call successors, (431) [2023-12-20 20:14:07,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1417 states to 1417 states and 2394 transitions. [2023-12-20 20:14:07,021 INFO L78 Accepts]: Start accepts. Automaton has 1417 states and 2394 transitions. Word has length 635 [2023-12-20 20:14:07,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:14:07,022 INFO L495 AbstractCegarLoop]: Abstraction has 1417 states and 2394 transitions. [2023-12-20 20:14:07,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-20 20:14:07,022 INFO L276 IsEmpty]: Start isEmpty. Operand 1417 states and 2394 transitions. [2023-12-20 20:14:07,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 636 [2023-12-20 20:14:07,027 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:14:07,027 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:14:07,037 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-20 20:14:07,228 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 [2023-12-20 20:14:07,230 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:14:07,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:14:07,231 INFO L85 PathProgramCache]: Analyzing trace with hash -425282416, now seen corresponding path program 1 times [2023-12-20 20:14:07,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:14:07,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924943250] [2023-12-20 20:14:07,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:14:07,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:14:07,279 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:14:07,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [136368830] [2023-12-20 20:14:07,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:14:07,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:14:07,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:14:07,281 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) [2023-12-20 20:14:07,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-20 20:14:07,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:14:07,589 INFO L262 TraceCheckSpWp]: Trace formula consists of 1454 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 20:14:07,597 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:14:07,986 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 8343 proven. 198 refuted. 0 times theorem prover too weak. 10471 trivial. 0 not checked. [2023-12-20 20:14:07,986 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 20:14:08,310 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 93 proven. 198 refuted. 0 times theorem prover too weak. 18721 trivial. 0 not checked. [2023-12-20 20:14:08,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:14:08,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924943250] [2023-12-20 20:14:08,310 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:14:08,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136368830] [2023-12-20 20:14:08,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136368830] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 20:14:08,311 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 20:14:08,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-12-20 20:14:08,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712329586] [2023-12-20 20:14:08,311 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 20:14:08,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 20:14:08,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:14:08,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 20:14:08,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-20 20:14:08,313 INFO L87 Difference]: Start difference. First operand 1417 states and 2394 transitions. Second operand has 8 states, 8 states have (on average 30.125) internal successors, (241), 8 states have internal predecessors, (241), 3 states have call successors, (164), 2 states have call predecessors, (164), 4 states have return successors, (165), 3 states have call predecessors, (165), 3 states have call successors, (165) [2023-12-20 20:14:08,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:14:08,730 INFO L93 Difference]: Finished difference Result 2881 states and 4827 transitions. [2023-12-20 20:14:08,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 20:14:08,731 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 30.125) internal successors, (241), 8 states have internal predecessors, (241), 3 states have call successors, (164), 2 states have call predecessors, (164), 4 states have return successors, (165), 3 states have call predecessors, (165), 3 states have call successors, (165) Word has length 635 [2023-12-20 20:14:08,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:14:08,737 INFO L225 Difference]: With dead ends: 2881 [2023-12-20 20:14:08,737 INFO L226 Difference]: Without dead ends: 1465 [2023-12-20 20:14:08,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1272 GetRequests, 1262 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-12-20 20:14:08,740 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 250 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 20:14:08,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 944 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 20:14:08,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1465 states. [2023-12-20 20:14:08,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1465 to 1449. [2023-12-20 20:14:08,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1449 states, 1001 states have (on average 1.5464535464535465) internal successors, (1548), 1008 states have internal predecessors, (1548), 431 states have call successors, (431), 16 states have call predecessors, (431), 16 states have return successors, (431), 424 states have call predecessors, (431), 431 states have call successors, (431) [2023-12-20 20:14:08,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1449 states to 1449 states and 2410 transitions. [2023-12-20 20:14:08,818 INFO L78 Accepts]: Start accepts. Automaton has 1449 states and 2410 transitions. Word has length 635 [2023-12-20 20:14:08,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:14:08,819 INFO L495 AbstractCegarLoop]: Abstraction has 1449 states and 2410 transitions. [2023-12-20 20:14:08,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 30.125) internal successors, (241), 8 states have internal predecessors, (241), 3 states have call successors, (164), 2 states have call predecessors, (164), 4 states have return successors, (165), 3 states have call predecessors, (165), 3 states have call successors, (165) [2023-12-20 20:14:08,819 INFO L276 IsEmpty]: Start isEmpty. Operand 1449 states and 2410 transitions. [2023-12-20 20:14:08,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 637 [2023-12-20 20:14:08,824 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:14:08,824 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:14:08,833 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-20 20:14:09,031 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 [2023-12-20 20:14:09,032 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:14:09,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:14:09,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1320962079, now seen corresponding path program 1 times [2023-12-20 20:14:09,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:14:09,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708762362] [2023-12-20 20:14:09,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:14:09,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:14:09,070 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:14:09,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [155265696] [2023-12-20 20:14:09,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:14:09,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:14:09,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:14:09,072 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) [2023-12-20 20:14:09,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-20 20:14:09,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:14:09,371 INFO L262 TraceCheckSpWp]: Trace formula consists of 1455 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 20:14:09,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:14:09,701 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 9363 proven. 168 refuted. 0 times theorem prover too weak. 9481 trivial. 0 not checked. [2023-12-20 20:14:09,701 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 20:14:10,036 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 123 proven. 168 refuted. 0 times theorem prover too weak. 18721 trivial. 0 not checked. [2023-12-20 20:14:10,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:14:10,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708762362] [2023-12-20 20:14:10,036 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:14:10,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155265696] [2023-12-20 20:14:10,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155265696] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 20:14:10,037 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 20:14:10,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-20 20:14:10,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43881799] [2023-12-20 20:14:10,037 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 20:14:10,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 20:14:10,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:14:10,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 20:14:10,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-20 20:14:10,039 INFO L87 Difference]: Start difference. First operand 1449 states and 2410 transitions. Second operand has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 2 states have call successors, (154), 2 states have call predecessors, (154), 4 states have return successors, (155), 2 states have call predecessors, (155), 2 states have call successors, (155) [2023-12-20 20:14:10,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:14:10,537 INFO L93 Difference]: Finished difference Result 2294 states and 3798 transitions. [2023-12-20 20:14:10,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 20:14:10,539 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 2 states have call successors, (154), 2 states have call predecessors, (154), 4 states have return successors, (155), 2 states have call predecessors, (155), 2 states have call successors, (155) Word has length 636 [2023-12-20 20:14:10,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:14:10,543 INFO L225 Difference]: With dead ends: 2294 [2023-12-20 20:14:10,543 INFO L226 Difference]: Without dead ends: 846 [2023-12-20 20:14:10,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1274 GetRequests, 1264 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-20 20:14:10,547 INFO L413 NwaCegarLoop]: 372 mSDtfsCounter, 751 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 792 SdHoareTripleChecker+Valid, 917 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 20:14:10,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [792 Valid, 917 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 20:14:10,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 846 states. [2023-12-20 20:14:10,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 846 to 838. [2023-12-20 20:14:10,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 558 states have (on average 1.4946236559139785) internal successors, (834), 561 states have internal predecessors, (834), 267 states have call successors, (267), 12 states have call predecessors, (267), 12 states have return successors, (267), 264 states have call predecessors, (267), 267 states have call successors, (267) [2023-12-20 20:14:10,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1368 transitions. [2023-12-20 20:14:10,586 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1368 transitions. Word has length 636 [2023-12-20 20:14:10,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:14:10,586 INFO L495 AbstractCegarLoop]: Abstraction has 838 states and 1368 transitions. [2023-12-20 20:14:10,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 2 states have call successors, (154), 2 states have call predecessors, (154), 4 states have return successors, (155), 2 states have call predecessors, (155), 2 states have call successors, (155) [2023-12-20 20:14:10,587 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1368 transitions. [2023-12-20 20:14:10,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2023-12-20 20:14:10,590 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:14:10,591 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:14:10,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-20 20:14:10,802 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 [2023-12-20 20:14:10,803 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:14:10,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:14:10,803 INFO L85 PathProgramCache]: Analyzing trace with hash -933464443, now seen corresponding path program 1 times [2023-12-20 20:14:10,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:14:10,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869635178] [2023-12-20 20:14:10,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:14:10,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:14:10,841 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:14:10,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1192859208] [2023-12-20 20:14:10,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:14:10,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:14:10,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:14:10,842 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) [2023-12-20 20:14:10,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-20 20:14:11,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:14:11,151 INFO L262 TraceCheckSpWp]: Trace formula consists of 1456 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 20:14:11,163 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:14:11,333 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 5697 proven. 51 refuted. 0 times theorem prover too weak. 13264 trivial. 0 not checked. [2023-12-20 20:14:11,333 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 20:14:11,688 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 240 proven. 51 refuted. 0 times theorem prover too weak. 18721 trivial. 0 not checked. [2023-12-20 20:14:11,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:14:11,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869635178] [2023-12-20 20:14:11,688 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:14:11,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192859208] [2023-12-20 20:14:11,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192859208] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 20:14:11,688 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 20:14:11,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-20 20:14:11,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526354001] [2023-12-20 20:14:11,689 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 20:14:11,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 20:14:11,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:14:11,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 20:14:11,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-20 20:14:11,691 INFO L87 Difference]: Start difference. First operand 838 states and 1368 transitions. Second operand has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 2 states have call successors, (115), 2 states have call predecessors, (115), 4 states have return successors, (116), 2 states have call predecessors, (116), 2 states have call successors, (116) [2023-12-20 20:14:12,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:14:12,174 INFO L93 Difference]: Finished difference Result 1695 states and 2753 transitions. [2023-12-20 20:14:12,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 20:14:12,175 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 2 states have call successors, (115), 2 states have call predecessors, (115), 4 states have return successors, (116), 2 states have call predecessors, (116), 2 states have call successors, (116) Word has length 637 [2023-12-20 20:14:12,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:14:12,179 INFO L225 Difference]: With dead ends: 1695 [2023-12-20 20:14:12,179 INFO L226 Difference]: Without dead ends: 858 [2023-12-20 20:14:12,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1276 GetRequests, 1266 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-20 20:14:12,182 INFO L413 NwaCegarLoop]: 379 mSDtfsCounter, 497 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 937 SdHoareTripleChecker+Invalid, 679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 20:14:12,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [576 Valid, 937 Invalid, 679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 20:14:12,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2023-12-20 20:14:12,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 846. [2023-12-20 20:14:12,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 846 states, 564 states have (on average 1.4822695035460993) internal successors, (836), 567 states have internal predecessors, (836), 267 states have call successors, (267), 14 states have call predecessors, (267), 14 states have return successors, (267), 264 states have call predecessors, (267), 267 states have call successors, (267) [2023-12-20 20:14:12,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 1370 transitions. [2023-12-20 20:14:12,225 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 1370 transitions. Word has length 637 [2023-12-20 20:14:12,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:14:12,225 INFO L495 AbstractCegarLoop]: Abstraction has 846 states and 1370 transitions. [2023-12-20 20:14:12,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 2 states have call successors, (115), 2 states have call predecessors, (115), 4 states have return successors, (116), 2 states have call predecessors, (116), 2 states have call successors, (116) [2023-12-20 20:14:12,226 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 1370 transitions. [2023-12-20 20:14:12,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2023-12-20 20:14:12,230 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:14:12,230 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:14:12,239 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-20 20:14:12,439 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 [2023-12-20 20:14:12,440 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:14:12,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:14:12,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1751112893, now seen corresponding path program 1 times [2023-12-20 20:14:12,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:14:12,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654433523] [2023-12-20 20:14:12,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:14:12,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:14:12,488 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:14:12,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1153436467] [2023-12-20 20:14:12,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:14:12,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:14:12,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:14:12,490 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) [2023-12-20 20:14:12,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-20 20:14:12,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:14:12,800 INFO L262 TraceCheckSpWp]: Trace formula consists of 1455 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-20 20:14:12,809 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:14:13,421 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2023-12-20 20:14:13,421 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 20:14:13,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:14:13,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654433523] [2023-12-20 20:14:13,422 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:14:13,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153436467] [2023-12-20 20:14:13,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1153436467] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 20:14:13,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 20:14:13,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 20:14:13,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754514929] [2023-12-20 20:14:13,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 20:14:13,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 20:14:13,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:14:13,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 20:14:13,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-20 20:14:13,425 INFO L87 Difference]: Start difference. First operand 846 states and 1370 transitions. Second operand has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 6 states have internal predecessors, (150), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-20 20:14:14,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:14:14,811 INFO L93 Difference]: Finished difference Result 4302 states and 6938 transitions. [2023-12-20 20:14:14,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 20:14:14,812 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 6 states have internal predecessors, (150), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 637 [2023-12-20 20:14:14,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:14:14,824 INFO L225 Difference]: With dead ends: 4302 [2023-12-20 20:14:14,824 INFO L226 Difference]: Without dead ends: 3457 [2023-12-20 20:14:14,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 645 GetRequests, 631 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2023-12-20 20:14:14,828 INFO L413 NwaCegarLoop]: 904 mSDtfsCounter, 2301 mSDsluCounter, 3600 mSDsCounter, 0 mSdLazyCounter, 718 mSolverCounterSat, 1118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2301 SdHoareTripleChecker+Valid, 4504 SdHoareTripleChecker+Invalid, 1836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1118 IncrementalHoareTripleChecker+Valid, 718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-20 20:14:14,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2301 Valid, 4504 Invalid, 1836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1118 Valid, 718 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-20 20:14:14,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3457 states. [2023-12-20 20:14:15,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3457 to 3383. [2023-12-20 20:14:15,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3383 states, 2254 states have (on average 1.4649511978704526) internal successors, (3302), 2266 states have internal predecessors, (3302), 1068 states have call successors, (1068), 60 states have call predecessors, (1068), 60 states have return successors, (1068), 1056 states have call predecessors, (1068), 1068 states have call successors, (1068) [2023-12-20 20:14:15,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3383 states to 3383 states and 5438 transitions. [2023-12-20 20:14:15,034 INFO L78 Accepts]: Start accepts. Automaton has 3383 states and 5438 transitions. Word has length 637 [2023-12-20 20:14:15,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:14:15,035 INFO L495 AbstractCegarLoop]: Abstraction has 3383 states and 5438 transitions. [2023-12-20 20:14:15,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 6 states have internal predecessors, (150), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-20 20:14:15,035 INFO L276 IsEmpty]: Start isEmpty. Operand 3383 states and 5438 transitions. [2023-12-20 20:14:15,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2023-12-20 20:14:15,040 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:14:15,040 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:14:15,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-20 20:14:15,247 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 [2023-12-20 20:14:15,247 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:14:15,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:14:15,248 INFO L85 PathProgramCache]: Analyzing trace with hash -62169151, now seen corresponding path program 1 times [2023-12-20 20:14:15,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:14:15,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885843149] [2023-12-20 20:14:15,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:14:15,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:14:15,316 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:14:15,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1542232065] [2023-12-20 20:14:15,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:14:15,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:14:15,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:14:15,318 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) [2023-12-20 20:14:15,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-20 20:14:15,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:14:15,639 INFO L262 TraceCheckSpWp]: Trace formula consists of 1456 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 20:14:15,646 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:14:16,966 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 13112 proven. 480 refuted. 0 times theorem prover too weak. 5420 trivial. 0 not checked. [2023-12-20 20:14:16,966 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 20:14:17,583 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 375 proven. 489 refuted. 0 times theorem prover too weak. 18148 trivial. 0 not checked. [2023-12-20 20:14:17,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:14:17,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885843149] [2023-12-20 20:14:17,584 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:14:17,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542232065] [2023-12-20 20:14:17,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1542232065] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 20:14:17,584 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 20:14:17,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2023-12-20 20:14:17,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079663115] [2023-12-20 20:14:17,585 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 20:14:17,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-20 20:14:17,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:14:17,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-20 20:14:17,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=510, Unknown=0, NotChecked=0, Total=650 [2023-12-20 20:14:17,587 INFO L87 Difference]: Start difference. First operand 3383 states and 5438 transitions. Second operand has 26 states, 26 states have (on average 9.692307692307692) internal successors, (252), 26 states have internal predecessors, (252), 7 states have call successors, (165), 4 states have call predecessors, (165), 10 states have return successors, (166), 7 states have call predecessors, (166), 7 states have call successors, (166) [2023-12-20 20:14:20,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:14:20,645 INFO L93 Difference]: Finished difference Result 16663 states and 26780 transitions. [2023-12-20 20:14:20,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-12-20 20:14:20,646 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 9.692307692307692) internal successors, (252), 26 states have internal predecessors, (252), 7 states have call successors, (165), 4 states have call predecessors, (165), 10 states have return successors, (166), 7 states have call predecessors, (166), 7 states have call successors, (166) Word has length 637 [2023-12-20 20:14:20,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:14:20,689 INFO L225 Difference]: With dead ends: 16663 [2023-12-20 20:14:20,689 INFO L226 Difference]: Without dead ends: 13281 [2023-12-20 20:14:20,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1308 GetRequests, 1253 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 626 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=966, Invalid=2226, Unknown=0, NotChecked=0, Total=3192 [2023-12-20 20:14:20,699 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 4898 mSDsluCounter, 2403 mSDsCounter, 0 mSdLazyCounter, 2836 mSolverCounterSat, 795 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4927 SdHoareTripleChecker+Valid, 2781 SdHoareTripleChecker+Invalid, 3631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 795 IncrementalHoareTripleChecker+Valid, 2836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-20 20:14:20,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4927 Valid, 2781 Invalid, 3631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [795 Valid, 2836 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-20 20:14:20,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13281 states. [2023-12-20 20:14:21,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13281 to 7619. [2023-12-20 20:14:21,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7619 states, 5626 states have (on average 1.518307856381088) internal successors, (8542), 5670 states have internal predecessors, (8542), 1836 states have call successors, (1836), 156 states have call predecessors, (1836), 156 states have return successors, (1836), 1792 states have call predecessors, (1836), 1836 states have call successors, (1836) [2023-12-20 20:14:21,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7619 states to 7619 states and 12214 transitions. [2023-12-20 20:14:21,259 INFO L78 Accepts]: Start accepts. Automaton has 7619 states and 12214 transitions. Word has length 637 [2023-12-20 20:14:21,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:14:21,259 INFO L495 AbstractCegarLoop]: Abstraction has 7619 states and 12214 transitions. [2023-12-20 20:14:21,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 9.692307692307692) internal successors, (252), 26 states have internal predecessors, (252), 7 states have call successors, (165), 4 states have call predecessors, (165), 10 states have return successors, (166), 7 states have call predecessors, (166), 7 states have call successors, (166) [2023-12-20 20:14:21,260 INFO L276 IsEmpty]: Start isEmpty. Operand 7619 states and 12214 transitions. [2023-12-20 20:14:21,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2023-12-20 20:14:21,266 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:14:21,266 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:14:21,273 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-20 20:14:21,473 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 [2023-12-20 20:14:21,474 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:14:21,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:14:21,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1324616259, now seen corresponding path program 1 times [2023-12-20 20:14:21,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:14:21,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702971183] [2023-12-20 20:14:21,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:14:21,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:14:21,522 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:14:21,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1364446282] [2023-12-20 20:14:21,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:14:21,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:14:21,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:14:21,524 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) [2023-12-20 20:14:21,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-20 20:14:21,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:14:21,907 INFO L262 TraceCheckSpWp]: Trace formula consists of 1453 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-20 20:14:21,916 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:14:23,130 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 13286 proven. 498 refuted. 0 times theorem prover too weak. 5228 trivial. 0 not checked. [2023-12-20 20:14:23,130 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 20:14:23,658 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 357 proven. 507 refuted. 0 times theorem prover too weak. 18148 trivial. 0 not checked. [2023-12-20 20:14:23,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:14:23,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702971183] [2023-12-20 20:14:23,659 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:14:23,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364446282] [2023-12-20 20:14:23,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364446282] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 20:14:23,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 20:14:23,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-12-20 20:14:23,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498250730] [2023-12-20 20:14:23,659 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 20:14:23,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-20 20:14:23,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:14:23,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-20 20:14:23,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=419, Unknown=0, NotChecked=0, Total=552 [2023-12-20 20:14:23,661 INFO L87 Difference]: Start difference. First operand 7619 states and 12214 transitions. Second operand has 24 states, 24 states have (on average 10.458333333333334) internal successors, (251), 24 states have internal predecessors, (251), 7 states have call successors, (169), 4 states have call predecessors, (169), 10 states have return successors, (170), 7 states have call predecessors, (170), 7 states have call successors, (170) [2023-12-20 20:14:27,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:14:27,110 INFO L93 Difference]: Finished difference Result 28285 states and 45413 transitions. [2023-12-20 20:14:27,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-12-20 20:14:27,111 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 10.458333333333334) internal successors, (251), 24 states have internal predecessors, (251), 7 states have call successors, (169), 4 states have call predecessors, (169), 10 states have return successors, (170), 7 states have call predecessors, (170), 7 states have call successors, (170) Word has length 637 [2023-12-20 20:14:27,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:14:27,155 INFO L225 Difference]: With dead ends: 28285 [2023-12-20 20:14:27,155 INFO L226 Difference]: Without dead ends: 20667 [2023-12-20 20:14:27,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1313 GetRequests, 1256 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 722 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1054, Invalid=2368, Unknown=0, NotChecked=0, Total=3422 [2023-12-20 20:14:27,172 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 4663 mSDsluCounter, 2909 mSDsCounter, 0 mSdLazyCounter, 2587 mSolverCounterSat, 1020 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4688 SdHoareTripleChecker+Valid, 3282 SdHoareTripleChecker+Invalid, 3607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1020 IncrementalHoareTripleChecker+Valid, 2587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-20 20:14:27,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4688 Valid, 3282 Invalid, 3607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1020 Valid, 2587 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-20 20:14:27,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20667 states. [2023-12-20 20:14:27,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20667 to 10531. [2023-12-20 20:14:27,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10531 states, 8090 states have (on average 1.5389369592089) internal successors, (12450), 8150 states have internal predecessors, (12450), 2220 states have call successors, (2220), 220 states have call predecessors, (2220), 220 states have return successors, (2220), 2160 states have call predecessors, (2220), 2220 states have call successors, (2220) [2023-12-20 20:14:27,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10531 states to 10531 states and 16890 transitions. [2023-12-20 20:14:27,931 INFO L78 Accepts]: Start accepts. Automaton has 10531 states and 16890 transitions. Word has length 637 [2023-12-20 20:14:27,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:14:27,932 INFO L495 AbstractCegarLoop]: Abstraction has 10531 states and 16890 transitions. [2023-12-20 20:14:27,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 10.458333333333334) internal successors, (251), 24 states have internal predecessors, (251), 7 states have call successors, (169), 4 states have call predecessors, (169), 10 states have return successors, (170), 7 states have call predecessors, (170), 7 states have call successors, (170) [2023-12-20 20:14:27,932 INFO L276 IsEmpty]: Start isEmpty. Operand 10531 states and 16890 transitions. [2023-12-20 20:14:27,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2023-12-20 20:14:27,940 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:14:27,940 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:14:27,947 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-20 20:14:28,147 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 [2023-12-20 20:14:28,148 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:14:28,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:14:28,148 INFO L85 PathProgramCache]: Analyzing trace with hash 371559935, now seen corresponding path program 1 times [2023-12-20 20:14:28,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:14:28,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187697733] [2023-12-20 20:14:28,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:14:28,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:14:28,180 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:14:28,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [390637029] [2023-12-20 20:14:28,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:14:28,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:14:28,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:14:28,182 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) [2023-12-20 20:14:28,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-20 20:14:28,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:14:28,514 INFO L262 TraceCheckSpWp]: Trace formula consists of 1454 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-20 20:14:28,521 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:14:30,093 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 9949 proven. 597 refuted. 0 times theorem prover too weak. 8466 trivial. 0 not checked. [2023-12-20 20:14:30,093 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 20:14:30,656 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 258 proven. 606 refuted. 0 times theorem prover too weak. 18148 trivial. 0 not checked. [2023-12-20 20:14:30,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:14:30,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187697733] [2023-12-20 20:14:30,657 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:14:30,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390637029] [2023-12-20 20:14:30,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390637029] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 20:14:30,657 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 20:14:30,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-12-20 20:14:30,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240412330] [2023-12-20 20:14:30,657 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 20:14:30,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-20 20:14:30,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:14:30,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-20 20:14:30,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=425, Unknown=0, NotChecked=0, Total=552 [2023-12-20 20:14:30,659 INFO L87 Difference]: Start difference. First operand 10531 states and 16890 transitions. Second operand has 24 states, 24 states have (on average 10.625) internal successors, (255), 24 states have internal predecessors, (255), 7 states have call successors, (172), 4 states have call predecessors, (172), 10 states have return successors, (173), 7 states have call predecessors, (173), 7 states have call successors, (173) [2023-12-20 20:14:33,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:14:33,298 INFO L93 Difference]: Finished difference Result 27481 states and 43313 transitions. [2023-12-20 20:14:33,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-12-20 20:14:33,299 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 10.625) internal successors, (255), 24 states have internal predecessors, (255), 7 states have call successors, (172), 4 states have call predecessors, (172), 10 states have return successors, (173), 7 states have call predecessors, (173), 7 states have call successors, (173) Word has length 637 [2023-12-20 20:14:33,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:14:33,342 INFO L225 Difference]: With dead ends: 27481 [2023-12-20 20:14:33,343 INFO L226 Difference]: Without dead ends: 16951 [2023-12-20 20:14:33,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1306 GetRequests, 1252 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 740 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=841, Invalid=2239, Unknown=0, NotChecked=0, Total=3080 [2023-12-20 20:14:33,360 INFO L413 NwaCegarLoop]: 381 mSDtfsCounter, 3736 mSDsluCounter, 1567 mSDsCounter, 0 mSdLazyCounter, 1869 mSolverCounterSat, 494 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3759 SdHoareTripleChecker+Valid, 1948 SdHoareTripleChecker+Invalid, 2363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 494 IncrementalHoareTripleChecker+Valid, 1869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-20 20:14:33,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3759 Valid, 1948 Invalid, 2363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [494 Valid, 1869 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-20 20:14:33,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16951 states. [2023-12-20 20:14:33,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16951 to 5659. [2023-12-20 20:14:33,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5659 states, 4210 states have (on average 1.4855106888361045) internal successors, (6254), 4230 states have internal predecessors, (6254), 1252 states have call successors, (1252), 196 states have call predecessors, (1252), 196 states have return successors, (1252), 1232 states have call predecessors, (1252), 1252 states have call successors, (1252) [2023-12-20 20:14:33,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5659 states to 5659 states and 8758 transitions. [2023-12-20 20:14:33,941 INFO L78 Accepts]: Start accepts. Automaton has 5659 states and 8758 transitions. Word has length 637 [2023-12-20 20:14:33,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:14:33,942 INFO L495 AbstractCegarLoop]: Abstraction has 5659 states and 8758 transitions. [2023-12-20 20:14:33,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 10.625) internal successors, (255), 24 states have internal predecessors, (255), 7 states have call successors, (172), 4 states have call predecessors, (172), 10 states have return successors, (173), 7 states have call predecessors, (173), 7 states have call successors, (173) [2023-12-20 20:14:33,942 INFO L276 IsEmpty]: Start isEmpty. Operand 5659 states and 8758 transitions. [2023-12-20 20:14:33,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2023-12-20 20:14:33,948 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:14:33,949 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:14:33,956 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-20 20:14:34,156 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 [2023-12-20 20:14:34,157 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:14:34,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:14:34,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1758345345, now seen corresponding path program 1 times [2023-12-20 20:14:34,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:14:34,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537403644] [2023-12-20 20:14:34,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:14:34,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:14:34,198 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:14:34,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1758387986] [2023-12-20 20:14:34,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:14:34,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:14:34,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:14:34,200 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) [2023-12-20 20:14:34,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-20 20:14:34,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:14:34,593 INFO L262 TraceCheckSpWp]: Trace formula consists of 1451 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-20 20:14:34,602 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:14:35,844 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 12566 proven. 285 refuted. 0 times theorem prover too weak. 6161 trivial. 0 not checked. [2023-12-20 20:14:35,845 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 20:14:36,333 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 291 proven. 288 refuted. 0 times theorem prover too weak. 18433 trivial. 0 not checked. [2023-12-20 20:14:36,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:14:36,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537403644] [2023-12-20 20:14:36,333 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:14:36,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758387986] [2023-12-20 20:14:36,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758387986] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 20:14:36,334 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 20:14:36,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 20 [2023-12-20 20:14:36,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080942944] [2023-12-20 20:14:36,334 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 20:14:36,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-20 20:14:36,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:14:36,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-20 20:14:36,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2023-12-20 20:14:36,336 INFO L87 Difference]: Start difference. First operand 5659 states and 8758 transitions. Second operand has 20 states, 20 states have (on average 12.75) internal successors, (255), 20 states have internal predecessors, (255), 6 states have call successors, (196), 4 states have call predecessors, (196), 8 states have return successors, (196), 6 states have call predecessors, (196), 6 states have call successors, (196) [2023-12-20 20:14:47,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:14:47,063 INFO L93 Difference]: Finished difference Result 92953 states and 149899 transitions. [2023-12-20 20:14:47,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2023-12-20 20:14:47,063 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 12.75) internal successors, (255), 20 states have internal predecessors, (255), 6 states have call successors, (196), 4 states have call predecessors, (196), 8 states have return successors, (196), 6 states have call predecessors, (196), 6 states have call successors, (196) Word has length 637 [2023-12-20 20:14:47,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:14:47,220 INFO L225 Difference]: With dead ends: 92953 [2023-12-20 20:14:47,220 INFO L226 Difference]: Without dead ends: 87295 [2023-12-20 20:14:47,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1357 GetRequests, 1277 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2681 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1890, Invalid=4752, Unknown=0, NotChecked=0, Total=6642 [2023-12-20 20:14:47,250 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 13142 mSDsluCounter, 4540 mSDsCounter, 0 mSdLazyCounter, 3888 mSolverCounterSat, 2645 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13258 SdHoareTripleChecker+Valid, 4864 SdHoareTripleChecker+Invalid, 6533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2645 IncrementalHoareTripleChecker+Valid, 3888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-20 20:14:47,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13258 Valid, 4864 Invalid, 6533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2645 Valid, 3888 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-20 20:14:47,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87295 states. [2023-12-20 20:14:50,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87295 to 31991. [2023-12-20 20:14:50,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31991 states, 25806 states have (on average 1.5583197705959855) internal successors, (40214), 25954 states have internal predecessors, (40214), 5492 states have call successors, (5492), 692 states have call predecessors, (5492), 692 states have return successors, (5492), 5344 states have call predecessors, (5492), 5492 states have call successors, (5492) [2023-12-20 20:14:50,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31991 states to 31991 states and 51198 transitions. [2023-12-20 20:14:50,544 INFO L78 Accepts]: Start accepts. Automaton has 31991 states and 51198 transitions. Word has length 637 [2023-12-20 20:14:50,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:14:50,544 INFO L495 AbstractCegarLoop]: Abstraction has 31991 states and 51198 transitions. [2023-12-20 20:14:50,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 12.75) internal successors, (255), 20 states have internal predecessors, (255), 6 states have call successors, (196), 4 states have call predecessors, (196), 8 states have return successors, (196), 6 states have call predecessors, (196), 6 states have call successors, (196) [2023-12-20 20:14:50,545 INFO L276 IsEmpty]: Start isEmpty. Operand 31991 states and 51198 transitions. [2023-12-20 20:14:50,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2023-12-20 20:14:50,555 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:14:50,555 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:14:50,563 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-20 20:14:50,762 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 [2023-12-20 20:14:50,763 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:14:50,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:14:50,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1703952447, now seen corresponding path program 1 times [2023-12-20 20:14:50,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:14:50,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911906809] [2023-12-20 20:14:50,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:14:50,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:14:50,804 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:14:50,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1344626723] [2023-12-20 20:14:50,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:14:50,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:14:50,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:14:50,806 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) [2023-12-20 20:14:50,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-20 20:14:51,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:14:51,205 INFO L262 TraceCheckSpWp]: Trace formula consists of 1451 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-20 20:14:51,211 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:14:52,583 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 12135 proven. 513 refuted. 0 times theorem prover too weak. 6364 trivial. 0 not checked. [2023-12-20 20:14:52,583 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 20:14:52,921 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 162 proven. 129 refuted. 0 times theorem prover too weak. 18721 trivial. 0 not checked. [2023-12-20 20:14:52,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:14:52,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911906809] [2023-12-20 20:14:52,921 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:14:52,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344626723] [2023-12-20 20:14:52,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344626723] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 20:14:52,924 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 20:14:52,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6] total 16 [2023-12-20 20:14:52,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834096604] [2023-12-20 20:14:52,924 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 20:14:52,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-20 20:14:52,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:14:52,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-20 20:14:52,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2023-12-20 20:14:52,927 INFO L87 Difference]: Start difference. First operand 31991 states and 51198 transitions. Second operand has 16 states, 16 states have (on average 16.1875) internal successors, (259), 15 states have internal predecessors, (259), 5 states have call successors, (164), 4 states have call predecessors, (164), 7 states have return successors, (165), 5 states have call predecessors, (165), 5 states have call successors, (165) [2023-12-20 20:14:57,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:14:57,283 INFO L93 Difference]: Finished difference Result 65491 states and 103613 transitions. [2023-12-20 20:14:57,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-20 20:14:57,283 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 16.1875) internal successors, (259), 15 states have internal predecessors, (259), 5 states have call successors, (164), 4 states have call predecessors, (164), 7 states have return successors, (165), 5 states have call predecessors, (165), 5 states have call successors, (165) Word has length 637 [2023-12-20 20:14:57,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:14:57,347 INFO L225 Difference]: With dead ends: 65491 [2023-12-20 20:14:57,347 INFO L226 Difference]: Without dead ends: 33501 [2023-12-20 20:14:57,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1300 GetRequests, 1259 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 421 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=497, Invalid=1309, Unknown=0, NotChecked=0, Total=1806 [2023-12-20 20:14:57,378 INFO L413 NwaCegarLoop]: 437 mSDtfsCounter, 614 mSDsluCounter, 1395 mSDsCounter, 0 mSdLazyCounter, 1835 mSolverCounterSat, 484 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 615 SdHoareTripleChecker+Valid, 1832 SdHoareTripleChecker+Invalid, 2319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 484 IncrementalHoareTripleChecker+Valid, 1835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-20 20:14:57,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [615 Valid, 1832 Invalid, 2319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [484 Valid, 1835 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-20 20:14:57,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33501 states. [2023-12-20 20:15:00,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33501 to 26518. [2023-12-20 20:15:00,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26518 states, 21201 states have (on average 1.5165794066317626) internal successors, (32153), 21302 states have internal predecessors, (32153), 4538 states have call successors, (4538), 778 states have call predecessors, (4538), 778 states have return successors, (4538), 4437 states have call predecessors, (4538), 4538 states have call successors, (4538) [2023-12-20 20:15:00,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26518 states to 26518 states and 41229 transitions. [2023-12-20 20:15:00,184 INFO L78 Accepts]: Start accepts. Automaton has 26518 states and 41229 transitions. Word has length 637 [2023-12-20 20:15:00,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:15:00,184 INFO L495 AbstractCegarLoop]: Abstraction has 26518 states and 41229 transitions. [2023-12-20 20:15:00,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 16.1875) internal successors, (259), 15 states have internal predecessors, (259), 5 states have call successors, (164), 4 states have call predecessors, (164), 7 states have return successors, (165), 5 states have call predecessors, (165), 5 states have call successors, (165) [2023-12-20 20:15:00,185 INFO L276 IsEmpty]: Start isEmpty. Operand 26518 states and 41229 transitions. [2023-12-20 20:15:00,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 640 [2023-12-20 20:15:00,193 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:15:00,193 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:15:00,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-20 20:15:00,400 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 [2023-12-20 20:15:00,401 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:15:00,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:15:00,401 INFO L85 PathProgramCache]: Analyzing trace with hash 102693871, now seen corresponding path program 1 times [2023-12-20 20:15:00,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:15:00,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985269928] [2023-12-20 20:15:00,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:15:00,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:15:00,434 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:15:00,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [258830416] [2023-12-20 20:15:00,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:15:00,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:15:00,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:15:00,435 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) [2023-12-20 20:15:00,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-20 20:15:00,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:15:00,809 INFO L262 TraceCheckSpWp]: Trace formula consists of 1455 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-20 20:15:00,816 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:15:02,164 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 9750 proven. 528 refuted. 0 times theorem prover too weak. 8734 trivial. 0 not checked. [2023-12-20 20:15:02,164 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 20:15:02,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:15:02,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985269928] [2023-12-20 20:15:02,528 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:15:02,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258830416] [2023-12-20 20:15:02,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [258830416] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 20:15:02,528 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-20 20:15:02,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2023-12-20 20:15:02,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553962100] [2023-12-20 20:15:02,529 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-20 20:15:02,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-20 20:15:02,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:15:02,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-20 20:15:02,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2023-12-20 20:15:02,530 INFO L87 Difference]: Start difference. First operand 26518 states and 41229 transitions. Second operand has 15 states, 15 states have (on average 11.133333333333333) internal successors, (167), 13 states have internal predecessors, (167), 5 states have call successors, (98), 5 states have call predecessors, (98), 6 states have return successors, (98), 5 states have call predecessors, (98), 5 states have call successors, (98) [2023-12-20 20:15:09,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:15:09,515 INFO L93 Difference]: Finished difference Result 80012 states and 122477 transitions. [2023-12-20 20:15:09,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-20 20:15:09,515 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 11.133333333333333) internal successors, (167), 13 states have internal predecessors, (167), 5 states have call successors, (98), 5 states have call predecessors, (98), 6 states have return successors, (98), 5 states have call predecessors, (98), 5 states have call successors, (98) Word has length 639 [2023-12-20 20:15:09,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:15:09,611 INFO L225 Difference]: With dead ends: 80012 [2023-12-20 20:15:09,611 INFO L226 Difference]: Without dead ends: 53634 [2023-12-20 20:15:09,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 755 GetRequests, 718 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=375, Invalid=1107, Unknown=0, NotChecked=0, Total=1482 [2023-12-20 20:15:09,641 INFO L413 NwaCegarLoop]: 531 mSDtfsCounter, 1191 mSDsluCounter, 2031 mSDsCounter, 0 mSdLazyCounter, 2368 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1242 SdHoareTripleChecker+Valid, 2562 SdHoareTripleChecker+Invalid, 2690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 2368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-20 20:15:09,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1242 Valid, 2562 Invalid, 2690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 2368 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-20 20:15:09,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53634 states. [2023-12-20 20:15:12,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53634 to 29752. [2023-12-20 20:15:12,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29752 states, 24343 states have (on average 1.5103725917101425) internal successors, (36767), 24444 states have internal predecessors, (36767), 4534 states have call successors, (4534), 874 states have call predecessors, (4534), 874 states have return successors, (4534), 4433 states have call predecessors, (4534), 4534 states have call successors, (4534) [2023-12-20 20:15:12,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29752 states to 29752 states and 45835 transitions. [2023-12-20 20:15:12,906 INFO L78 Accepts]: Start accepts. Automaton has 29752 states and 45835 transitions. Word has length 639 [2023-12-20 20:15:12,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:15:12,907 INFO L495 AbstractCegarLoop]: Abstraction has 29752 states and 45835 transitions. [2023-12-20 20:15:12,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 11.133333333333333) internal successors, (167), 13 states have internal predecessors, (167), 5 states have call successors, (98), 5 states have call predecessors, (98), 6 states have return successors, (98), 5 states have call predecessors, (98), 5 states have call successors, (98) [2023-12-20 20:15:12,907 INFO L276 IsEmpty]: Start isEmpty. Operand 29752 states and 45835 transitions. [2023-12-20 20:15:12,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 640 [2023-12-20 20:15:12,916 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:15:12,916 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:15:12,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-20 20:15:13,116 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 [2023-12-20 20:15:13,117 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:15:13,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:15:13,117 INFO L85 PathProgramCache]: Analyzing trace with hash 750234411, now seen corresponding path program 1 times [2023-12-20 20:15:13,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:15:13,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008839031] [2023-12-20 20:15:13,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:15:13,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:15:13,160 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:15:13,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1248340606] [2023-12-20 20:15:13,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:15:13,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:15:13,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:15:13,162 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) [2023-12-20 20:15:13,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-20 20:15:13,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:15:13,550 INFO L262 TraceCheckSpWp]: Trace formula consists of 1458 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-20 20:15:13,557 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:15:15,798 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 9931 proven. 591 refuted. 0 times theorem prover too weak. 8490 trivial. 0 not checked. [2023-12-20 20:15:15,798 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 20:16:36,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:16:36,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008839031] [2023-12-20 20:16:36,488 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:16:36,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248340606] [2023-12-20 20:16:36,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248340606] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 20:16:36,488 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-20 20:16:36,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2023-12-20 20:16:36,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577996312] [2023-12-20 20:16:36,489 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-20 20:16:36,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-20 20:16:36,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:16:36,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-20 20:16:36,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=520, Unknown=8, NotChecked=0, Total=650 [2023-12-20 20:16:36,490 INFO L87 Difference]: Start difference. First operand 29752 states and 45835 transitions. Second operand has 17 states, 17 states have (on average 10.0) internal successors, (170), 17 states have internal predecessors, (170), 4 states have call successors, (98), 4 states have call predecessors, (98), 7 states have return successors, (98), 4 states have call predecessors, (98), 4 states have call successors, (98) [2023-12-20 20:17:10,944 WARN L293 SmtUtils]: Spent 11.65s on a formula simplification that was a NOOP. DAG size: 57 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-20 20:17:13,117 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 20:17:18,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.71s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 20:17:33,750 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 20:17:37,355 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 20:17:42,973 WARN L293 SmtUtils]: Spent 5.06s on a formula simplification that was a NOOP. DAG size: 60 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-20 20:18:10,496 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 20:18:15,153 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 20:18:18,321 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.78s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 20:18:23,658 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 20:18:25,916 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 20:18:36,557 WARN L293 SmtUtils]: Spent 8.61s on a formula simplification that was a NOOP. DAG size: 60 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-20 20:18:56,432 WARN L293 SmtUtils]: Spent 8.63s on a formula simplification that was a NOOP. DAG size: 54 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-20 20:19:00,248 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 20:19:04,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 20:19:09,069 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 20:19:13,851 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 20:19:17,392 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.19s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 20:19:19,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 20:19:22,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 20:19:27,104 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.79s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 20:19:32,677 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 20:19:35,948 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 20:19:41,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 20:19:45,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 20:19:51,970 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 20:19:53,143 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 20:19:58,173 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 20:20:06,154 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 20:20:18,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:20:18,038 INFO L93 Difference]: Finished difference Result 132906 states and 207927 transitions. [2023-12-20 20:20:18,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-12-20 20:20:18,039 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 10.0) internal successors, (170), 17 states have internal predecessors, (170), 4 states have call successors, (98), 4 states have call predecessors, (98), 7 states have return successors, (98), 4 states have call predecessors, (98), 4 states have call successors, (98) Word has length 639 [2023-12-20 20:20:18,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:20:18,236 INFO L225 Difference]: With dead ends: 132906 [2023-12-20 20:20:18,236 INFO L226 Difference]: Without dead ends: 103288 [2023-12-20 20:20:18,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1123 GetRequests, 1054 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1309 ImplicationChecksByTransitivity, 121.7s TimeCoverageRelationStatistics Valid=1121, Invalid=3841, Unknown=8, NotChecked=0, Total=4970 [2023-12-20 20:20:18,278 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 3822 mSDsluCounter, 2193 mSDsCounter, 0 mSdLazyCounter, 2879 mSolverCounterSat, 808 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 119.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3876 SdHoareTripleChecker+Valid, 2558 SdHoareTripleChecker+Invalid, 3691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 808 IncrementalHoareTripleChecker+Valid, 2879 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 121.5s IncrementalHoareTripleChecker+Time [2023-12-20 20:20:18,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3876 Valid, 2558 Invalid, 3691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [808 Valid, 2879 Invalid, 4 Unknown, 0 Unchecked, 121.5s Time] [2023-12-20 20:20:18,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103288 states. [2023-12-20 20:20:23,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103288 to 34968. [2023-12-20 20:20:23,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34968 states, 28759 states have (on average 1.5193504642025104) internal successors, (43695), 28892 states have internal predecessors, (43695), 5270 states have call successors, (5270), 938 states have call predecessors, (5270), 938 states have return successors, (5270), 5137 states have call predecessors, (5270), 5270 states have call successors, (5270) [2023-12-20 20:20:23,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34968 states to 34968 states and 54235 transitions. [2023-12-20 20:20:23,930 INFO L78 Accepts]: Start accepts. Automaton has 34968 states and 54235 transitions. Word has length 639 [2023-12-20 20:20:23,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:20:23,931 INFO L495 AbstractCegarLoop]: Abstraction has 34968 states and 54235 transitions. [2023-12-20 20:20:23,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 10.0) internal successors, (170), 17 states have internal predecessors, (170), 4 states have call successors, (98), 4 states have call predecessors, (98), 7 states have return successors, (98), 4 states have call predecessors, (98), 4 states have call successors, (98) [2023-12-20 20:20:23,931 INFO L276 IsEmpty]: Start isEmpty. Operand 34968 states and 54235 transitions. [2023-12-20 20:20:23,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 640 [2023-12-20 20:20:23,942 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:20:23,942 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:20:23,952 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-20 20:20:24,152 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 [2023-12-20 20:20:24,153 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:20:24,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:20:24,154 INFO L85 PathProgramCache]: Analyzing trace with hash 2011151661, now seen corresponding path program 1 times [2023-12-20 20:20:24,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:20:24,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073302538] [2023-12-20 20:20:24,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:20:24,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:20:24,185 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:20:24,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [774468263] [2023-12-20 20:20:24,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:20:24,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:20:24,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:20:24,187 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) [2023-12-20 20:20:24,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-20 20:20:24,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:20:24,608 INFO L262 TraceCheckSpWp]: Trace formula consists of 1455 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-20 20:20:24,614 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:20:27,190 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 12526 proven. 267 refuted. 0 times theorem prover too weak. 6219 trivial. 0 not checked. [2023-12-20 20:20:27,190 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 20:20:28,146 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 216 proven. 75 refuted. 0 times theorem prover too weak. 18721 trivial. 0 not checked. [2023-12-20 20:20:28,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:20:28,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073302538] [2023-12-20 20:20:28,146 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:20:28,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774468263] [2023-12-20 20:20:28,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774468263] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 20:20:28,146 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 20:20:28,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 17 [2023-12-20 20:20:28,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557340739] [2023-12-20 20:20:28,147 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 20:20:28,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-20 20:20:28,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:20:28,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-20 20:20:28,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2023-12-20 20:20:28,148 INFO L87 Difference]: Start difference. First operand 34968 states and 54235 transitions. Second operand has 17 states, 17 states have (on average 14.764705882352942) internal successors, (251), 17 states have internal predecessors, (251), 4 states have call successors, (163), 3 states have call predecessors, (163), 6 states have return successors, (164), 4 states have call predecessors, (164), 4 states have call successors, (164) [2023-12-20 20:21:03,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:21:03,603 INFO L93 Difference]: Finished difference Result 174116 states and 263460 transitions. [2023-12-20 20:21:03,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2023-12-20 20:21:03,604 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 14.764705882352942) internal successors, (251), 17 states have internal predecessors, (251), 4 states have call successors, (163), 3 states have call predecessors, (163), 6 states have return successors, (164), 4 states have call predecessors, (164), 4 states have call successors, (164) Word has length 639 [2023-12-20 20:21:03,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:21:03,864 INFO L225 Difference]: With dead ends: 174116 [2023-12-20 20:21:03,864 INFO L226 Difference]: Without dead ends: 139282 [2023-12-20 20:21:03,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1336 GetRequests, 1267 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1712 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1318, Invalid=3652, Unknown=0, NotChecked=0, Total=4970 [2023-12-20 20:21:03,918 INFO L413 NwaCegarLoop]: 349 mSDtfsCounter, 3718 mSDsluCounter, 2398 mSDsCounter, 0 mSdLazyCounter, 2502 mSolverCounterSat, 1759 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3753 SdHoareTripleChecker+Valid, 2747 SdHoareTripleChecker+Invalid, 4261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1759 IncrementalHoareTripleChecker+Valid, 2502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2023-12-20 20:21:03,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3753 Valid, 2747 Invalid, 4261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1759 Valid, 2502 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2023-12-20 20:21:04,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139282 states. [2023-12-20 20:21:10,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139282 to 40032. [2023-12-20 20:21:10,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40032 states, 33775 states have (on average 1.534241302738712) internal successors, (51819), 33908 states have internal predecessors, (51819), 5270 states have call successors, (5270), 986 states have call predecessors, (5270), 986 states have return successors, (5270), 5137 states have call predecessors, (5270), 5270 states have call successors, (5270) [2023-12-20 20:21:10,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40032 states to 40032 states and 62359 transitions. [2023-12-20 20:21:10,741 INFO L78 Accepts]: Start accepts. Automaton has 40032 states and 62359 transitions. Word has length 639 [2023-12-20 20:21:10,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:21:10,742 INFO L495 AbstractCegarLoop]: Abstraction has 40032 states and 62359 transitions. [2023-12-20 20:21:10,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 14.764705882352942) internal successors, (251), 17 states have internal predecessors, (251), 4 states have call successors, (163), 3 states have call predecessors, (163), 6 states have return successors, (164), 4 states have call predecessors, (164), 4 states have call successors, (164) [2023-12-20 20:21:10,742 INFO L276 IsEmpty]: Start isEmpty. Operand 40032 states and 62359 transitions. [2023-12-20 20:21:10,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 641 [2023-12-20 20:21:10,754 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:21:10,755 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:21:10,764 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-20 20:21:10,955 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 [2023-12-20 20:21:10,956 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:21:10,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:21:10,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1243510253, now seen corresponding path program 1 times [2023-12-20 20:21:10,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:21:10,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698067010] [2023-12-20 20:21:10,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:21:10,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:21:11,030 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:21:11,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1314881109] [2023-12-20 20:21:11,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:21:11,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:21:11,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:21:11,032 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) [2023-12-20 20:21:11,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-20 20:21:11,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:21:11,420 INFO L262 TraceCheckSpWp]: Trace formula consists of 1455 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-20 20:21:11,426 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:21:17,153 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 11769 proven. 972 refuted. 0 times theorem prover too weak. 6271 trivial. 0 not checked. [2023-12-20 20:21:17,153 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 20:21:18,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:21:18,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698067010] [2023-12-20 20:21:18,894 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:21:18,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314881109] [2023-12-20 20:21:18,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314881109] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 20:21:18,894 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-20 20:21:18,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2023-12-20 20:21:18,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377758484] [2023-12-20 20:21:18,895 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-20 20:21:18,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-20 20:21:18,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:21:18,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-20 20:21:18,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2023-12-20 20:21:18,896 INFO L87 Difference]: Start difference. First operand 40032 states and 62359 transitions. Second operand has 19 states, 19 states have (on average 9.157894736842104) internal successors, (174), 17 states have internal predecessors, (174), 6 states have call successors, (98), 6 states have call predecessors, (98), 8 states have return successors, (98), 6 states have call predecessors, (98), 6 states have call successors, (98) [2023-12-20 20:21:35,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:21:35,174 INFO L93 Difference]: Finished difference Result 109572 states and 169884 transitions. [2023-12-20 20:21:35,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-20 20:21:35,176 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 9.157894736842104) internal successors, (174), 17 states have internal predecessors, (174), 6 states have call successors, (98), 6 states have call predecessors, (98), 8 states have return successors, (98), 6 states have call predecessors, (98), 6 states have call successors, (98) Word has length 640 [2023-12-20 20:21:35,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:21:35,292 INFO L225 Difference]: With dead ends: 109572 [2023-12-20 20:21:35,293 INFO L226 Difference]: Without dead ends: 69674 [2023-12-20 20:21:35,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 751 GetRequests, 715 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=374, Invalid=1032, Unknown=0, NotChecked=0, Total=1406 [2023-12-20 20:21:35,333 INFO L413 NwaCegarLoop]: 406 mSDtfsCounter, 2196 mSDsluCounter, 1364 mSDsCounter, 0 mSdLazyCounter, 1751 mSolverCounterSat, 381 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2227 SdHoareTripleChecker+Valid, 1770 SdHoareTripleChecker+Invalid, 2132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 381 IncrementalHoareTripleChecker+Valid, 1751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-20 20:21:35,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2227 Valid, 1770 Invalid, 2132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [381 Valid, 1751 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-20 20:21:35,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69674 states. [2023-12-20 20:21:41,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69674 to 40096. [2023-12-20 20:21:41,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40096 states, 33839 states have (on average 1.53701350512722) internal successors, (52011), 33972 states have internal predecessors, (52011), 5270 states have call successors, (5270), 986 states have call predecessors, (5270), 986 states have return successors, (5270), 5137 states have call predecessors, (5270), 5270 states have call successors, (5270) [2023-12-20 20:21:41,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40096 states to 40096 states and 62551 transitions. [2023-12-20 20:21:41,528 INFO L78 Accepts]: Start accepts. Automaton has 40096 states and 62551 transitions. Word has length 640 [2023-12-20 20:21:41,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:21:41,529 INFO L495 AbstractCegarLoop]: Abstraction has 40096 states and 62551 transitions. [2023-12-20 20:21:41,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 9.157894736842104) internal successors, (174), 17 states have internal predecessors, (174), 6 states have call successors, (98), 6 states have call predecessors, (98), 8 states have return successors, (98), 6 states have call predecessors, (98), 6 states have call successors, (98) [2023-12-20 20:21:41,529 INFO L276 IsEmpty]: Start isEmpty. Operand 40096 states and 62551 transitions. [2023-12-20 20:21:41,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 641 [2023-12-20 20:21:41,542 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:21:41,542 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:21:41,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-20 20:21:41,742 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 [2023-12-20 20:21:41,742 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:21:41,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:21:41,743 INFO L85 PathProgramCache]: Analyzing trace with hash -786575257, now seen corresponding path program 1 times [2023-12-20 20:21:41,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:21:41,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737837969] [2023-12-20 20:21:41,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:21:41,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:21:41,808 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:21:41,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1098024551] [2023-12-20 20:21:41,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:21:41,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:21:41,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:21:41,813 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) [2023-12-20 20:21:41,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-20 20:21:42,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:21:42,222 INFO L262 TraceCheckSpWp]: Trace formula consists of 1456 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-20 20:21:42,228 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:21:56,471 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 9796 proven. 795 refuted. 0 times theorem prover too weak. 8421 trivial. 0 not checked. [2023-12-20 20:21:56,471 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 20:22:22,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:22:22,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737837969] [2023-12-20 20:22:22,789 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:22:22,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098024551] [2023-12-20 20:22:22,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1098024551] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 20:22:22,789 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-20 20:22:22,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2023-12-20 20:22:22,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806532819] [2023-12-20 20:22:22,790 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-20 20:22:22,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-20 20:22:22,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:22:22,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-20 20:22:22,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=433, Unknown=0, NotChecked=0, Total=552 [2023-12-20 20:22:22,791 INFO L87 Difference]: Start difference. First operand 40096 states and 62551 transitions. Second operand has 18 states, 18 states have (on average 9.833333333333334) internal successors, (177), 18 states have internal predecessors, (177), 5 states have call successors, (98), 5 states have call predecessors, (98), 9 states have return successors, (98), 5 states have call predecessors, (98), 5 states have call successors, (98) [2023-12-20 20:22:32,552 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 20:22:36,593 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 20:22:40,655 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 20:22:44,719 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 20:22:48,821 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 20:22:48,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 139 [2023-12-20 20:22:48,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1082 GetRequests, 1053 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=206, Invalid=724, Unknown=0, NotChecked=0, Total=930 [2023-12-20 20:22:48,993 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 69 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 1308 mSolverCounterSat, 102 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 1416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1308 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.5s IncrementalHoareTripleChecker+Time [2023-12-20 20:22:48,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 488 Invalid, 1416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1308 Invalid, 5 Unknown, 0 Unchecked, 25.5s Time] [2023-12-20 20:22:49,000 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-12-20 20:22:49,197 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 [2023-12-20 20:22:49,198 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:337) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:177) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:138) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertPostcondition(IncrementalHoareTripleChecker.java:665) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:269) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:284) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.releaseLock(ChainingHoareTripleChecker.java:449) at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1655) at java.base/java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:658) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.releaseLock(ChainingHoareTripleChecker.java:98) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:159) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.computeAutomataDifference(NwaCegarLoop.java:365) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.refineAbstraction(NwaCegarLoop.java:325) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:487) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:416) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Stream closed at java.base/java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:442) at java.base/java.io.OutputStream.write(OutputStream.java:157) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:251) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:175) ... 36 more [2023-12-20 20:22:49,201 INFO L158 Benchmark]: Toolchain (without parser) took 527977.48ms. Allocated memory was 197.1MB in the beginning and 3.4GB in the end (delta: 3.2GB). Free memory was 153.8MB in the beginning and 1.5GB in the end (delta: -1.3GB). Peak memory consumption was 1.9GB. Max. memory is 8.0GB. [2023-12-20 20:22:49,201 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 197.1MB. Free memory is still 145.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-20 20:22:49,202 INFO L158 Benchmark]: CACSL2BoogieTranslator took 366.43ms. Allocated memory is still 197.1MB. Free memory was 153.5MB in the beginning and 120.3MB in the end (delta: 33.2MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. [2023-12-20 20:22:49,202 INFO L158 Benchmark]: Boogie Procedure Inliner took 121.99ms. Allocated memory is still 197.1MB. Free memory was 120.3MB in the beginning and 158.1MB in the end (delta: -37.8MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. [2023-12-20 20:22:49,202 INFO L158 Benchmark]: Boogie Preprocessor took 139.23ms. Allocated memory is still 197.1MB. Free memory was 158.1MB in the beginning and 138.2MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-12-20 20:22:49,202 INFO L158 Benchmark]: RCFGBuilder took 854.77ms. Allocated memory was 197.1MB in the beginning and 277.9MB in the end (delta: 80.7MB). Free memory was 138.2MB in the beginning and 219.9MB in the end (delta: -81.8MB). Peak memory consumption was 84.9MB. Max. memory is 8.0GB. [2023-12-20 20:22:49,202 INFO L158 Benchmark]: TraceAbstraction took 526490.99ms. Allocated memory was 277.9MB in the beginning and 3.4GB in the end (delta: 3.1GB). Free memory was 219.5MB in the beginning and 1.5GB in the end (delta: -1.3GB). Peak memory consumption was 1.9GB. Max. memory is 8.0GB. [2023-12-20 20:22:49,203 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 197.1MB. Free memory is still 145.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 366.43ms. Allocated memory is still 197.1MB. Free memory was 153.5MB in the beginning and 120.3MB in the end (delta: 33.2MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 121.99ms. Allocated memory is still 197.1MB. Free memory was 120.3MB in the beginning and 158.1MB in the end (delta: -37.8MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 139.23ms. Allocated memory is still 197.1MB. Free memory was 158.1MB in the beginning and 138.2MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * RCFGBuilder took 854.77ms. Allocated memory was 197.1MB in the beginning and 277.9MB in the end (delta: 80.7MB). Free memory was 138.2MB in the beginning and 219.9MB in the end (delta: -81.8MB). Peak memory consumption was 84.9MB. Max. memory is 8.0GB. * TraceAbstraction took 526490.99ms. Allocated memory was 277.9MB in the beginning and 3.4GB in the end (delta: 3.1GB). Free memory was 219.5MB in the beginning and 1.5GB in the end (delta: -1.3GB). Peak memory consumption was 1.9GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:337) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...