/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-14.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 15:43:31,067 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 15:43:31,133 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 15:43:31,138 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 15:43:31,139 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 15:43:31,161 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 15:43:31,161 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 15:43:31,162 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 15:43:31,162 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 15:43:31,165 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 15:43:31,165 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 15:43:31,166 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 15:43:31,166 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 15:43:31,167 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 15:43:31,167 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 15:43:31,168 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 15:43:31,168 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 15:43:31,168 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 15:43:31,168 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 15:43:31,169 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 15:43:31,169 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 15:43:31,169 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 15:43:31,169 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 15:43:31,170 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 15:43:31,170 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 15:43:31,170 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 15:43:31,170 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 15:43:31,170 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 15:43:31,171 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 15:43:31,171 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 15:43:31,171 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 15:43:31,172 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 15:43:31,172 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 15:43:31,172 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 15:43:31,172 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 15:43:31,172 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 15:43:31,172 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 15:43:31,172 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 15:43:31,172 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 15:43:31,172 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 15:43:31,173 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 15:43:31,173 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 15:43:31,173 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 15:43:31,173 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 15:43:31,369 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 15:43:31,392 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 15:43:31,393 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 15:43:31,394 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 15:43:31,399 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 15:43:31,399 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-14.i [2023-12-19 15:43:32,477 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 15:43:32,647 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 15:43:32,648 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-14.i [2023-12-19 15:43:32,655 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50999adf4/10c45dad2c57433f98cc75fdcd88d031/FLAG157a90771 [2023-12-19 15:43:32,668 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50999adf4/10c45dad2c57433f98cc75fdcd88d031 [2023-12-19 15:43:32,670 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 15:43:32,671 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 15:43:32,673 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 15:43:32,673 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 15:43:32,676 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 15:43:32,677 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 03:43:32" (1/1) ... [2023-12-19 15:43:32,677 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ac90b6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:43:32, skipping insertion in model container [2023-12-19 15:43:32,678 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 03:43:32" (1/1) ... [2023-12-19 15:43:32,705 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 15:43:32,827 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-14.i[916,929] [2023-12-19 15:43:32,882 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 15:43:32,890 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 15:43:32,898 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-14.i[916,929] [2023-12-19 15:43:32,924 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 15:43:32,938 INFO L206 MainTranslator]: Completed translation [2023-12-19 15:43:32,938 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:43:32 WrapperNode [2023-12-19 15:43:32,938 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 15:43:32,939 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 15:43:32,939 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 15:43:32,939 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 15:43:32,943 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:43:32" (1/1) ... [2023-12-19 15:43:32,954 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:43:32" (1/1) ... [2023-12-19 15:43:32,991 INFO L138 Inliner]: procedures = 29, calls = 183, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 559 [2023-12-19 15:43:32,992 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 15:43:32,993 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 15:43:32,993 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 15:43:32,993 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 15:43:33,003 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:43:32" (1/1) ... [2023-12-19 15:43:33,003 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:43:32" (1/1) ... [2023-12-19 15:43:33,009 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:43:32" (1/1) ... [2023-12-19 15:43:33,039 INFO L175 MemorySlicer]: Split 150 memory accesses to 2 slices as follows [2, 148]. 99 percent of accesses are in the largest equivalence class. The 18 initializations are split as follows [2, 16]. The 20 writes are split as follows [0, 20]. [2023-12-19 15:43:33,040 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:43:32" (1/1) ... [2023-12-19 15:43:33,040 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:43:32" (1/1) ... [2023-12-19 15:43:33,059 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:43:32" (1/1) ... [2023-12-19 15:43:33,063 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:43:32" (1/1) ... [2023-12-19 15:43:33,081 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:43:32" (1/1) ... [2023-12-19 15:43:33,084 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:43:32" (1/1) ... [2023-12-19 15:43:33,089 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 15:43:33,090 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 15:43:33,090 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 15:43:33,090 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 15:43:33,091 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:43:32" (1/1) ... [2023-12-19 15:43:33,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 15:43:33,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:43:33,160 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-19 15:43:33,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-19 15:43:33,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 15:43:33,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2023-12-19 15:43:33,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2023-12-19 15:43:33,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-19 15:43:33,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-19 15:43:33,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2023-12-19 15:43:33,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2023-12-19 15:43:33,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-19 15:43:33,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-19 15:43:33,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2023-12-19 15:43:33,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2023-12-19 15:43:33,195 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 15:43:33,195 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 15:43:33,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 15:43:33,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-19 15:43:33,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 15:43:33,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 15:43:33,285 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 15:43:33,290 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 15:43:33,732 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 15:43:33,755 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 15:43:33,755 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 15:43:33,755 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 03:43:33 BoogieIcfgContainer [2023-12-19 15:43:33,756 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 15:43:33,757 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 15:43:33,757 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 15:43:33,762 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 15:43:33,763 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 03:43:32" (1/3) ... [2023-12-19 15:43:33,765 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cfbfa7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 03:43:33, skipping insertion in model container [2023-12-19 15:43:33,765 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:43:32" (2/3) ... [2023-12-19 15:43:33,765 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cfbfa7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 03:43:33, skipping insertion in model container [2023-12-19 15:43:33,765 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 03:43:33" (3/3) ... [2023-12-19 15:43:33,766 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-s_file-14.i [2023-12-19 15:43:33,781 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 15:43:33,781 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 15:43:33,812 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 15:43:33,816 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;@4f2f26b6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 15:43:33,816 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 15:43:33,820 INFO L276 IsEmpty]: Start isEmpty. Operand has 121 states, 97 states have (on average 1.4536082474226804) internal successors, (141), 98 states have internal predecessors, (141), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-12-19 15:43:33,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-19 15:43:33,839 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:43:33,839 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 15:43:33,839 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:43:33,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:43:33,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1045265753, now seen corresponding path program 1 times [2023-12-19 15:43:33,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:43:33,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702466220] [2023-12-19 15:43:33,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:43:33,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:43:33,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:34,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:43:34,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:34,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:43:34,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:34,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:43:34,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:34,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:43:34,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:34,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:43:34,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:34,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:43:34,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:34,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:43:34,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:34,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:43:34,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:34,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:43:34,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:34,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:43:34,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:34,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:43:34,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:34,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:43:34,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:34,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:43:34,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:34,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:43:34,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:34,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-19 15:43:34,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:34,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:43:34,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:34,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:43:34,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:34,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-19 15:43:34,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:34,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-12-19 15:43:34,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:34,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-19 15:43:34,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:34,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-19 15:43:34,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:34,188 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2023-12-19 15:43:34,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:43:34,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702466220] [2023-12-19 15:43:34,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702466220] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:43:34,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:43:34,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 15:43:34,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547387219] [2023-12-19 15:43:34,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:43:34,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 15:43:34,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:43:34,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 15:43:34,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 15:43:34,224 INFO L87 Difference]: Start difference. First operand has 121 states, 97 states have (on average 1.4536082474226804) internal successors, (141), 98 states have internal predecessors, (141), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 2 states, 2 states have (on average 30.5) internal successors, (61), 2 states have internal predecessors, (61), 2 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-19 15:43:34,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:43:34,280 INFO L93 Difference]: Finished difference Result 239 states and 385 transitions. [2023-12-19 15:43:34,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 15:43:34,282 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 30.5) internal successors, (61), 2 states have internal predecessors, (61), 2 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 2 states have call successors, (21) Word has length 163 [2023-12-19 15:43:34,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:43:34,290 INFO L225 Difference]: With dead ends: 239 [2023-12-19 15:43:34,290 INFO L226 Difference]: Without dead ends: 119 [2023-12-19 15:43:34,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 15:43:34,296 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 15:43:34,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 174 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 15:43:34,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2023-12-19 15:43:34,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2023-12-19 15:43:34,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 96 states have (on average 1.4166666666666667) internal successors, (136), 96 states have internal predecessors, (136), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-12-19 15:43:34,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 178 transitions. [2023-12-19 15:43:34,341 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 178 transitions. Word has length 163 [2023-12-19 15:43:34,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:43:34,341 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 178 transitions. [2023-12-19 15:43:34,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 30.5) internal successors, (61), 2 states have internal predecessors, (61), 2 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-19 15:43:34,342 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 178 transitions. [2023-12-19 15:43:34,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-19 15:43:34,346 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:43:34,346 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 15:43:34,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 15:43:34,347 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:43:34,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:43:34,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1512887547, now seen corresponding path program 1 times [2023-12-19 15:43:34,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:43:34,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477699558] [2023-12-19 15:43:34,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:43:34,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:43:34,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:34,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:43:34,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:34,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:43:34,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:34,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:43:34,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:34,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:43:34,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:34,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:43:34,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:34,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:43:34,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:34,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:43:34,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:34,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:43:34,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:34,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:43:34,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:34,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:43:34,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:34,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:43:34,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:34,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:43:34,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:34,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:43:34,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:34,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:43:34,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:34,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-19 15:43:34,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:34,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:43:34,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:34,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:43:34,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:34,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-19 15:43:34,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:34,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-12-19 15:43:34,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:34,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-19 15:43:34,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:34,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-19 15:43:34,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:34,619 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2023-12-19 15:43:34,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:43:34,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477699558] [2023-12-19 15:43:34,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477699558] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:43:34,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:43:34,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 15:43:34,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687815617] [2023-12-19 15:43:34,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:43:34,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 15:43:34,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:43:34,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 15:43:34,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 15:43:34,622 INFO L87 Difference]: Start difference. First operand 119 states and 178 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-19 15:43:34,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:43:34,679 INFO L93 Difference]: Finished difference Result 241 states and 362 transitions. [2023-12-19 15:43:34,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 15:43:34,680 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 163 [2023-12-19 15:43:34,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:43:34,681 INFO L225 Difference]: With dead ends: 241 [2023-12-19 15:43:34,682 INFO L226 Difference]: Without dead ends: 123 [2023-12-19 15:43:34,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 15:43:34,683 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 3 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 15:43:34,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 506 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 15:43:34,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2023-12-19 15:43:34,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 122. [2023-12-19 15:43:34,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 99 states have (on average 1.404040404040404) internal successors, (139), 99 states have internal predecessors, (139), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-12-19 15:43:34,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 181 transitions. [2023-12-19 15:43:34,695 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 181 transitions. Word has length 163 [2023-12-19 15:43:34,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:43:34,696 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 181 transitions. [2023-12-19 15:43:34,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-19 15:43:34,696 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 181 transitions. [2023-12-19 15:43:34,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-19 15:43:34,698 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:43:34,698 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 15:43:34,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 15:43:34,699 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:43:34,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:43:34,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1093136007, now seen corresponding path program 1 times [2023-12-19 15:43:34,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:43:34,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330294009] [2023-12-19 15:43:34,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:43:34,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:43:34,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:34,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:43:34,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:34,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:43:34,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:34,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:43:34,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:34,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:43:34,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:34,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:43:34,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:34,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:43:34,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:34,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:43:34,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:34,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:43:34,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:34,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:43:34,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:34,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:43:34,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:34,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:43:34,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:34,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:43:34,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:34,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:43:34,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:34,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:43:34,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:35,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-19 15:43:35,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:35,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:43:35,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:35,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:43:35,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:35,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-19 15:43:35,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:35,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-12-19 15:43:35,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:35,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-19 15:43:35,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:35,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-19 15:43:35,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:35,064 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2023-12-19 15:43:35,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:43:35,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330294009] [2023-12-19 15:43:35,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330294009] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:43:35,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:43:35,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 15:43:35,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54855462] [2023-12-19 15:43:35,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:43:35,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 15:43:35,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:43:35,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 15:43:35,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 15:43:35,071 INFO L87 Difference]: Start difference. First operand 122 states and 181 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-19 15:43:35,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:43:35,354 INFO L93 Difference]: Finished difference Result 365 states and 542 transitions. [2023-12-19 15:43:35,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 15:43:35,356 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 163 [2023-12-19 15:43:35,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:43:35,364 INFO L225 Difference]: With dead ends: 365 [2023-12-19 15:43:35,365 INFO L226 Difference]: Without dead ends: 244 [2023-12-19 15:43:35,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 15:43:35,368 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 163 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 15:43:35,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 387 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 15:43:35,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2023-12-19 15:43:35,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 217. [2023-12-19 15:43:35,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 172 states have (on average 1.3837209302325582) internal successors, (238), 172 states have internal predecessors, (238), 42 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-19 15:43:35,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 322 transitions. [2023-12-19 15:43:35,400 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 322 transitions. Word has length 163 [2023-12-19 15:43:35,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:43:35,401 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 322 transitions. [2023-12-19 15:43:35,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-19 15:43:35,402 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 322 transitions. [2023-12-19 15:43:35,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-19 15:43:35,408 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:43:35,408 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 15:43:35,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 15:43:35,408 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:43:35,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:43:35,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1396392955, now seen corresponding path program 1 times [2023-12-19 15:43:35,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:43:35,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377587387] [2023-12-19 15:43:35,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:43:35,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:43:35,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:35,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:43:35,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:35,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:43:35,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:35,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:43:35,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:35,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:43:35,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:35,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:43:35,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:35,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:43:35,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:35,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:43:35,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:35,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:43:35,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:35,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:43:35,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:35,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:43:35,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:35,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:43:35,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:35,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:43:35,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:35,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:43:35,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:35,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:43:35,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:35,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-19 15:43:35,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:35,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:43:35,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:35,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:43:35,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:35,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-19 15:43:35,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:35,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-12-19 15:43:35,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:35,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-19 15:43:35,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:35,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-19 15:43:35,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:35,944 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2023-12-19 15:43:35,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:43:35,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377587387] [2023-12-19 15:43:35,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377587387] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:43:35,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:43:35,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 15:43:35,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933883447] [2023-12-19 15:43:35,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:43:35,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 15:43:35,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:43:35,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 15:43:35,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 15:43:35,947 INFO L87 Difference]: Start difference. First operand 217 states and 322 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-19 15:43:36,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:43:36,248 INFO L93 Difference]: Finished difference Result 348 states and 517 transitions. [2023-12-19 15:43:36,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 15:43:36,248 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 163 [2023-12-19 15:43:36,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:43:36,251 INFO L225 Difference]: With dead ends: 348 [2023-12-19 15:43:36,251 INFO L226 Difference]: Without dead ends: 221 [2023-12-19 15:43:36,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 15:43:36,262 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 159 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 15:43:36,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 240 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 15:43:36,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2023-12-19 15:43:36,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 219. [2023-12-19 15:43:36,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 174 states have (on average 1.3793103448275863) internal successors, (240), 174 states have internal predecessors, (240), 42 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-19 15:43:36,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 324 transitions. [2023-12-19 15:43:36,293 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 324 transitions. Word has length 163 [2023-12-19 15:43:36,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:43:36,293 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 324 transitions. [2023-12-19 15:43:36,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-19 15:43:36,294 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 324 transitions. [2023-12-19 15:43:36,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-19 15:43:36,295 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:43:36,295 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 15:43:36,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 15:43:36,296 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:43:36,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:43:36,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1983198969, now seen corresponding path program 1 times [2023-12-19 15:43:36,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:43:36,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499437994] [2023-12-19 15:43:36,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:43:36,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:43:36,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:36,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:43:36,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:36,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:43:36,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:36,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:43:36,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:36,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:43:36,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:36,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:43:36,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:36,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:43:36,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:36,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:43:36,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:36,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:43:36,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:36,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:43:36,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:36,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:43:36,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:36,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:43:36,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:36,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:43:36,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:36,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:43:36,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:36,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:43:36,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:36,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-19 15:43:36,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:36,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:43:36,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:36,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:43:36,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:36,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-19 15:43:36,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:36,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-12-19 15:43:36,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:36,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-19 15:43:36,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:36,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-19 15:43:36,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:36,578 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2023-12-19 15:43:36,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:43:36,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499437994] [2023-12-19 15:43:36,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499437994] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:43:36,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:43:36,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 15:43:36,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210453512] [2023-12-19 15:43:36,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:43:36,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 15:43:36,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:43:36,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 15:43:36,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 15:43:36,581 INFO L87 Difference]: Start difference. First operand 219 states and 324 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-19 15:43:36,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:43:36,815 INFO L93 Difference]: Finished difference Result 475 states and 704 transitions. [2023-12-19 15:43:36,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 15:43:36,815 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 163 [2023-12-19 15:43:36,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:43:36,818 INFO L225 Difference]: With dead ends: 475 [2023-12-19 15:43:36,818 INFO L226 Difference]: Without dead ends: 353 [2023-12-19 15:43:36,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-19 15:43:36,819 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 208 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 845 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 15:43:36,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 845 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 15:43:36,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2023-12-19 15:43:36,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 229. [2023-12-19 15:43:36,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 184 states have (on average 1.3804347826086956) internal successors, (254), 184 states have internal predecessors, (254), 42 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-19 15:43:36,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 338 transitions. [2023-12-19 15:43:36,841 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 338 transitions. Word has length 163 [2023-12-19 15:43:36,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:43:36,842 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 338 transitions. [2023-12-19 15:43:36,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-19 15:43:36,842 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 338 transitions. [2023-12-19 15:43:36,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-19 15:43:36,843 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:43:36,843 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 15:43:36,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 15:43:36,844 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:43:36,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:43:36,844 INFO L85 PathProgramCache]: Analyzing trace with hash 385275705, now seen corresponding path program 1 times [2023-12-19 15:43:36,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:43:36,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805497456] [2023-12-19 15:43:36,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:43:36,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:43:36,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:37,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:43:37,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:37,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:43:37,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:37,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:43:37,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:37,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:43:37,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:37,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:43:37,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:37,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:43:37,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:37,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:43:37,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:37,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:43:37,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:37,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:43:37,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:37,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:43:37,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:37,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:43:37,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:37,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:43:37,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:37,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:43:37,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:37,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:43:37,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:37,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-19 15:43:37,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:37,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:43:37,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:37,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:43:37,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:37,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-19 15:43:37,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:37,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-12-19 15:43:37,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:37,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-19 15:43:37,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:37,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-19 15:43:37,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:37,363 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2023-12-19 15:43:37,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:43:37,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805497456] [2023-12-19 15:43:37,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805497456] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:43:37,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:43:37,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 15:43:37,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226014513] [2023-12-19 15:43:37,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:43:37,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 15:43:37,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:43:37,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 15:43:37,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-19 15:43:37,365 INFO L87 Difference]: Start difference. First operand 229 states and 338 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-19 15:43:37,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:43:37,757 INFO L93 Difference]: Finished difference Result 513 states and 756 transitions. [2023-12-19 15:43:37,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 15:43:37,758 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 163 [2023-12-19 15:43:37,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:43:37,760 INFO L225 Difference]: With dead ends: 513 [2023-12-19 15:43:37,760 INFO L226 Difference]: Without dead ends: 379 [2023-12-19 15:43:37,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-19 15:43:37,760 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 340 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 15:43:37,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 364 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 15:43:37,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2023-12-19 15:43:37,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 225. [2023-12-19 15:43:37,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 180 states have (on average 1.3555555555555556) internal successors, (244), 180 states have internal predecessors, (244), 42 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-19 15:43:37,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 328 transitions. [2023-12-19 15:43:37,773 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 328 transitions. Word has length 163 [2023-12-19 15:43:37,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:43:37,773 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 328 transitions. [2023-12-19 15:43:37,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-19 15:43:37,773 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 328 transitions. [2023-12-19 15:43:37,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-12-19 15:43:37,774 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:43:37,774 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 15:43:37,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 15:43:37,775 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:43:37,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:43:37,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1081671008, now seen corresponding path program 1 times [2023-12-19 15:43:37,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:43:37,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726726493] [2023-12-19 15:43:37,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:43:37,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:43:37,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:38,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:43:38,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:38,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:43:38,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:38,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:43:38,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:38,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:43:38,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:38,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:43:38,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:38,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:43:38,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:38,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:43:38,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:38,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:43:38,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:38,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:43:38,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:38,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:43:38,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:38,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:43:38,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:38,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:43:38,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:38,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:43:38,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:38,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:43:38,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:38,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-19 15:43:38,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:38,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:43:38,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:38,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:43:38,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:38,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-19 15:43:38,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:38,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-12-19 15:43:38,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:38,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-19 15:43:38,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:38,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-19 15:43:38,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:38,695 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 30 proven. 30 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2023-12-19 15:43:38,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:43:38,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726726493] [2023-12-19 15:43:38,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726726493] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 15:43:38,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108786049] [2023-12-19 15:43:38,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:43:38,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:43:38,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:43:38,698 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:43:38,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 15:43:38,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:43:38,943 INFO L262 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-19 15:43:38,953 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:43:39,008 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:43:39,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 13 [2023-12-19 15:43:39,168 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-12-19 15:43:39,208 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-12-19 15:43:39,247 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-12-19 15:43:39,295 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-12-19 15:43:39,324 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-12-19 15:43:39,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-12-19 15:43:39,400 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 101 [2023-12-19 15:43:39,405 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:43:39,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 101 treesize of output 123 [2023-12-19 15:43:39,453 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 80 [2023-12-19 15:43:39,512 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:43:39,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 147 treesize of output 92 [2023-12-19 15:43:39,625 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 186 treesize of output 146 [2023-12-19 15:43:39,630 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:43:39,630 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 146 treesize of output 162 [2023-12-19 15:43:39,693 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 440 proven. 30 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2023-12-19 15:43:39,693 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 15:43:40,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 17 [2023-12-19 15:43:40,068 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 30 proven. 30 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2023-12-19 15:43:40,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2108786049] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 15:43:40,068 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 15:43:40,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 9] total 21 [2023-12-19 15:43:40,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97479777] [2023-12-19 15:43:40,069 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 15:43:40,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-19 15:43:40,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:43:40,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-19 15:43:40,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2023-12-19 15:43:40,071 INFO L87 Difference]: Start difference. First operand 225 states and 328 transitions. Second operand has 21 states, 18 states have (on average 8.277777777777779) internal successors, (149), 21 states have internal predecessors, (149), 8 states have call successors, (53), 3 states have call predecessors, (53), 6 states have return successors, (53), 5 states have call predecessors, (53), 8 states have call successors, (53) [2023-12-19 15:43:42,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:43:42,116 INFO L93 Difference]: Finished difference Result 720 states and 1016 transitions. [2023-12-19 15:43:42,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-19 15:43:42,116 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 8.277777777777779) internal successors, (149), 21 states have internal predecessors, (149), 8 states have call successors, (53), 3 states have call predecessors, (53), 6 states have return successors, (53), 5 states have call predecessors, (53), 8 states have call successors, (53) Word has length 165 [2023-12-19 15:43:42,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:43:42,119 INFO L225 Difference]: With dead ends: 720 [2023-12-19 15:43:42,119 INFO L226 Difference]: Without dead ends: 585 [2023-12-19 15:43:42,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 365 SyntacticMatches, 3 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 752 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=587, Invalid=2275, Unknown=0, NotChecked=0, Total=2862 [2023-12-19 15:43:42,121 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 775 mSDsluCounter, 740 mSDsCounter, 0 mSdLazyCounter, 1906 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 792 SdHoareTripleChecker+Valid, 817 SdHoareTripleChecker+Invalid, 2204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 1906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-19 15:43:42,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [792 Valid, 817 Invalid, 2204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 1906 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-19 15:43:42,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2023-12-19 15:43:42,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 469. [2023-12-19 15:43:42,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 384 states have (on average 1.3255208333333333) internal successors, (509), 387 states have internal predecessors, (509), 75 states have call successors, (75), 9 states have call predecessors, (75), 9 states have return successors, (75), 72 states have call predecessors, (75), 75 states have call successors, (75) [2023-12-19 15:43:42,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 659 transitions. [2023-12-19 15:43:42,156 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 659 transitions. Word has length 165 [2023-12-19 15:43:42,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:43:42,156 INFO L495 AbstractCegarLoop]: Abstraction has 469 states and 659 transitions. [2023-12-19 15:43:42,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 8.277777777777779) internal successors, (149), 21 states have internal predecessors, (149), 8 states have call successors, (53), 3 states have call predecessors, (53), 6 states have return successors, (53), 5 states have call predecessors, (53), 8 states have call successors, (53) [2023-12-19 15:43:42,156 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 659 transitions. [2023-12-19 15:43:42,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-12-19 15:43:42,158 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:43:42,158 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 15:43:42,167 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 15:43:42,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:43:42,364 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:43:42,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:43:42,365 INFO L85 PathProgramCache]: Analyzing trace with hash 583723680, now seen corresponding path program 1 times [2023-12-19 15:43:42,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:43:42,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67193430] [2023-12-19 15:43:42,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:43:42,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:43:42,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat