/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_normal_file-34.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 06:07:07,227 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 06:07:07,288 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 06:07:07,293 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 06:07:07,293 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 06:07:07,320 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 06:07:07,320 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 06:07:07,320 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 06:07:07,321 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 06:07:07,323 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 06:07:07,324 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 06:07:07,324 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 06:07:07,325 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 06:07:07,325 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 06:07:07,326 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 06:07:07,326 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 06:07:07,326 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 06:07:07,326 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 06:07:07,326 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 06:07:07,326 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 06:07:07,327 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 06:07:07,328 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 06:07:07,328 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 06:07:07,328 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 06:07:07,328 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 06:07:07,328 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 06:07:07,328 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 06:07:07,329 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 06:07:07,329 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 06:07:07,329 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 06:07:07,330 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 06:07:07,330 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 06:07:07,330 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 06:07:07,330 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 06:07:07,330 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 06:07:07,330 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 06:07:07,330 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 06:07:07,331 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 06:07:07,331 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 06:07:07,331 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 06:07:07,331 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 06:07:07,331 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 06:07:07,331 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 06:07:07,331 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 06:07:07,533 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 06:07:07,552 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 06:07:07,554 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 06:07:07,554 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 06:07:07,555 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 06:07:07,556 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_normal_file-34.i [2023-12-19 06:07:08,669 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 06:07:08,834 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 06:07:08,834 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_normal_file-34.i [2023-12-19 06:07:08,849 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/739efe808/0dfce584e0364c8ca3850a0bd5063665/FLAG067f383fa [2023-12-19 06:07:08,861 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/739efe808/0dfce584e0364c8ca3850a0bd5063665 [2023-12-19 06:07:08,863 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 06:07:08,864 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 06:07:08,865 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 06:07:08,865 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 06:07:08,869 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 06:07:08,870 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 06:07:08" (1/1) ... [2023-12-19 06:07:08,871 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ed33046 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:07:08, skipping insertion in model container [2023-12-19 06:07:08,871 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 06:07:08" (1/1) ... [2023-12-19 06:07:08,894 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 06:07:08,993 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_normal_file-34.i[913,926] [2023-12-19 06:07:09,034 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 06:07:09,043 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 06:07:09,051 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_normal_file-34.i[913,926] [2023-12-19 06:07:09,080 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 06:07:09,125 INFO L206 MainTranslator]: Completed translation [2023-12-19 06:07:09,126 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:07:09 WrapperNode [2023-12-19 06:07:09,126 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 06:07:09,126 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 06:07:09,127 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 06:07:09,127 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 06:07:09,131 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:07:09" (1/1) ... [2023-12-19 06:07:09,139 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:07:09" (1/1) ... [2023-12-19 06:07:09,181 INFO L138 Inliner]: procedures = 26, calls = 26, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 176 [2023-12-19 06:07:09,181 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 06:07:09,182 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 06:07:09,182 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 06:07:09,182 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 06:07:09,195 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:07:09" (1/1) ... [2023-12-19 06:07:09,196 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:07:09" (1/1) ... [2023-12-19 06:07:09,198 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:07:09" (1/1) ... [2023-12-19 06:07:09,217 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-19 06:07:09,217 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:07:09" (1/1) ... [2023-12-19 06:07:09,217 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:07:09" (1/1) ... [2023-12-19 06:07:09,228 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:07:09" (1/1) ... [2023-12-19 06:07:09,230 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:07:09" (1/1) ... [2023-12-19 06:07:09,232 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:07:09" (1/1) ... [2023-12-19 06:07:09,234 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:07:09" (1/1) ... [2023-12-19 06:07:09,245 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 06:07:09,246 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 06:07:09,246 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 06:07:09,246 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 06:07:09,247 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:07:09" (1/1) ... [2023-12-19 06:07:09,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 06:07:09,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:07:09,302 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 06:07:09,320 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 06:07:09,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 06:07:09,326 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 06:07:09,326 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 06:07:09,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 06:07:09,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 06:07:09,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 06:07:09,390 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 06:07:09,392 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 06:07:09,869 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 06:07:09,901 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 06:07:09,901 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 06:07:09,902 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 06:07:09 BoogieIcfgContainer [2023-12-19 06:07:09,902 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 06:07:09,903 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 06:07:09,903 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 06:07:09,906 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 06:07:09,906 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 06:07:08" (1/3) ... [2023-12-19 06:07:09,906 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72f7ee18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 06:07:09, skipping insertion in model container [2023-12-19 06:07:09,906 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:07:09" (2/3) ... [2023-12-19 06:07:09,907 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72f7ee18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 06:07:09, skipping insertion in model container [2023-12-19 06:07:09,907 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 06:07:09" (3/3) ... [2023-12-19 06:07:09,907 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_normal_file-34.i [2023-12-19 06:07:09,919 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 06:07:09,919 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 06:07:09,952 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 06:07:09,957 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;@62b9315a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 06:07:09,958 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 06:07:09,961 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 45 states have (on average 1.6) internal successors, (72), 46 states have internal predecessors, (72), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-19 06:07:09,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-19 06:07:09,979 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:07:09,979 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:07:09,980 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:07:09,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:07:09,983 INFO L85 PathProgramCache]: Analyzing trace with hash -891774575, now seen corresponding path program 1 times [2023-12-19 06:07:09,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:07:09,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381480352] [2023-12-19 06:07:09,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:07:09,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:07:10,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:07:10,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:07:10,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381480352] [2023-12-19 06:07:10,223 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 06:07:10,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289257934] [2023-12-19 06:07:10,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:07:10,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:07:10,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:07:10,233 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 06:07:10,234 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 06:07:10,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:07:10,325 INFO L262 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 06:07:10,330 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:07:10,352 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-12-19 06:07:10,352 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:07:10,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289257934] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:07:10,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:07:10,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 06:07:10,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921288220] [2023-12-19 06:07:10,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:07:10,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 06:07:10,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:07:10,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 06:07:10,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 06:07:10,375 INFO L87 Difference]: Start difference. First operand has 61 states, 45 states have (on average 1.6) internal successors, (72), 46 states have internal predecessors, (72), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 06:07:10,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:07:10,399 INFO L93 Difference]: Finished difference Result 119 states and 207 transitions. [2023-12-19 06:07:10,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 06:07:10,401 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 90 [2023-12-19 06:07:10,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:07:10,407 INFO L225 Difference]: With dead ends: 119 [2023-12-19 06:07:10,407 INFO L226 Difference]: Without dead ends: 59 [2023-12-19 06:07:10,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 89 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 06:07:10,412 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 06:07:10,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 90 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 06:07:10,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-12-19 06:07:10,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2023-12-19 06:07:10,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 44 states have (on average 1.5227272727272727) internal successors, (67), 44 states have internal predecessors, (67), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-19 06:07:10,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 93 transitions. [2023-12-19 06:07:10,449 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 93 transitions. Word has length 90 [2023-12-19 06:07:10,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:07:10,450 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 93 transitions. [2023-12-19 06:07:10,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 06:07:10,450 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 93 transitions. [2023-12-19 06:07:10,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-19 06:07:10,452 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:07:10,452 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:07:10,459 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-19 06:07:10,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-19 06:07:10,659 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:07:10,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:07:10,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1865726257, now seen corresponding path program 1 times [2023-12-19 06:07:10,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:07:10,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954405155] [2023-12-19 06:07:10,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:07:10,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:07:10,709 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:07:10,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1539172027] [2023-12-19 06:07:10,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:07:10,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:07:10,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:07:10,730 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:07:10,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 06:07:10,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:07:10,811 INFO L262 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 06:07:10,820 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:07:11,012 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 06:07:11,012 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:07:11,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:07:11,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954405155] [2023-12-19 06:07:11,013 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:07:11,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539172027] [2023-12-19 06:07:11,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539172027] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:07:11,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:07:11,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 06:07:11,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616653363] [2023-12-19 06:07:11,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:07:11,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 06:07:11,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:07:11,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 06:07:11,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 06:07:11,016 INFO L87 Difference]: Start difference. First operand 59 states and 93 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 06:07:11,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:07:11,238 INFO L93 Difference]: Finished difference Result 176 states and 276 transitions. [2023-12-19 06:07:11,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 06:07:11,239 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 90 [2023-12-19 06:07:11,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:07:11,241 INFO L225 Difference]: With dead ends: 176 [2023-12-19 06:07:11,241 INFO L226 Difference]: Without dead ends: 118 [2023-12-19 06:07:11,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 86 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 06:07:11,243 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 117 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 06:07:11,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 325 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 06:07:11,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2023-12-19 06:07:11,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 61. [2023-12-19 06:07:11,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 46 states have (on average 1.5) internal successors, (69), 46 states have internal predecessors, (69), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-19 06:07:11,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 95 transitions. [2023-12-19 06:07:11,255 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 95 transitions. Word has length 90 [2023-12-19 06:07:11,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:07:11,257 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 95 transitions. [2023-12-19 06:07:11,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 06:07:11,257 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 95 transitions. [2023-12-19 06:07:11,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-19 06:07:11,258 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:07:11,258 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:07:11,280 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 06:07:11,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-19 06:07:11,483 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:07:11,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:07:11,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1740875413, now seen corresponding path program 1 times [2023-12-19 06:07:11,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:07:11,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296214089] [2023-12-19 06:07:11,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:07:11,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:07:11,507 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:07:11,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [371108857] [2023-12-19 06:07:11,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:07:11,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:07:11,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:07:11,509 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:07:11,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 06:07:11,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:07:11,585 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-19 06:07:11,587 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:07:11,728 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 06:07:11,729 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:07:11,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:07:11,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296214089] [2023-12-19 06:07:11,729 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:07:11,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371108857] [2023-12-19 06:07:11,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371108857] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:07:11,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:07:11,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 06:07:11,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145308552] [2023-12-19 06:07:11,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:07:11,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 06:07:11,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:07:11,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 06:07:11,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 06:07:11,731 INFO L87 Difference]: Start difference. First operand 61 states and 95 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 06:07:11,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:07:11,794 INFO L93 Difference]: Finished difference Result 210 states and 327 transitions. [2023-12-19 06:07:11,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 06:07:11,795 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 91 [2023-12-19 06:07:11,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:07:11,796 INFO L225 Difference]: With dead ends: 210 [2023-12-19 06:07:11,796 INFO L226 Difference]: Without dead ends: 150 [2023-12-19 06:07:11,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 88 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 06:07:11,798 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 113 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 06:07:11,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 295 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 06:07:11,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2023-12-19 06:07:11,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 121. [2023-12-19 06:07:11,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 92 states have (on average 1.4891304347826086) internal successors, (137), 92 states have internal predecessors, (137), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-19 06:07:11,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 189 transitions. [2023-12-19 06:07:11,812 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 189 transitions. Word has length 91 [2023-12-19 06:07:11,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:07:11,813 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 189 transitions. [2023-12-19 06:07:11,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 06:07:11,813 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 189 transitions. [2023-12-19 06:07:11,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-19 06:07:11,814 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:07:11,814 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:07:11,820 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 06:07:12,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:07:12,021 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:07:12,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:07:12,021 INFO L85 PathProgramCache]: Analyzing trace with hash 926432231, now seen corresponding path program 1 times [2023-12-19 06:07:12,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:07:12,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720679239] [2023-12-19 06:07:12,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:07:12,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:07:12,059 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:07:12,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [636835182] [2023-12-19 06:07:12,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:07:12,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:07:12,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:07:12,077 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:07:12,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 06:07:12,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:07:12,628 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-19 06:07:12,632 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:07:16,084 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 213 proven. 45 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-12-19 06:07:16,085 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:07:22,404 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 06:07:22,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:07:22,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720679239] [2023-12-19 06:07:22,405 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:07:22,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636835182] [2023-12-19 06:07:22,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636835182] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 06:07:22,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 06:07:22,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [19] total 26 [2023-12-19 06:07:22,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611772177] [2023-12-19 06:07:22,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:07:22,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 06:07:22,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:07:22,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 06:07:22,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=521, Unknown=0, NotChecked=0, Total=650 [2023-12-19 06:07:22,409 INFO L87 Difference]: Start difference. First operand 121 states and 189 transitions. Second operand has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 06:07:35,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:07:35,380 INFO L93 Difference]: Finished difference Result 367 states and 559 transitions. [2023-12-19 06:07:35,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-19 06:07:35,381 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 92 [2023-12-19 06:07:35,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:07:35,383 INFO L225 Difference]: With dead ends: 367 [2023-12-19 06:07:35,383 INFO L226 Difference]: Without dead ends: 247 [2023-12-19 06:07:35,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=203, Invalid=919, Unknown=0, NotChecked=0, Total=1122 [2023-12-19 06:07:35,385 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 298 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-12-19 06:07:35,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 404 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-12-19 06:07:35,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2023-12-19 06:07:35,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 162. [2023-12-19 06:07:35,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 126 states have (on average 1.4523809523809523) internal successors, (183), 127 states have internal predecessors, (183), 31 states have call successors, (31), 4 states have call predecessors, (31), 4 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2023-12-19 06:07:35,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 245 transitions. [2023-12-19 06:07:35,398 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 245 transitions. Word has length 92 [2023-12-19 06:07:35,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:07:35,399 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 245 transitions. [2023-12-19 06:07:35,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 06:07:35,399 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 245 transitions. [2023-12-19 06:07:35,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-19 06:07:35,400 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:07:35,400 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:07:35,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 06:07:35,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:07:35,602 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:07:35,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:07:35,602 INFO L85 PathProgramCache]: Analyzing trace with hash 983690533, now seen corresponding path program 1 times [2023-12-19 06:07:35,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:07:35,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022782073] [2023-12-19 06:07:35,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:07:35,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:07:35,633 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:07:35,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [851008266] [2023-12-19 06:07:35,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:07:35,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:07:35,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:07:35,637 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:07:35,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 06:07:35,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:07:35,719 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-19 06:07:35,724 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:07:40,055 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 06:07:40,056 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:07:40,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:07:40,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022782073] [2023-12-19 06:07:40,056 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:07:40,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851008266] [2023-12-19 06:07:40,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851008266] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:07:40,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:07:40,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 06:07:40,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569550653] [2023-12-19 06:07:40,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:07:40,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 06:07:40,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:07:40,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 06:07:40,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-12-19 06:07:40,058 INFO L87 Difference]: Start difference. First operand 162 states and 245 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 06:07:45,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:07:45,725 INFO L93 Difference]: Finished difference Result 504 states and 755 transitions. [2023-12-19 06:07:45,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-19 06:07:45,726 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 92 [2023-12-19 06:07:45,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:07:45,729 INFO L225 Difference]: With dead ends: 504 [2023-12-19 06:07:45,729 INFO L226 Difference]: Without dead ends: 427 [2023-12-19 06:07:45,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2023-12-19 06:07:45,731 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 407 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-19 06:07:45,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 687 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 642 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-19 06:07:45,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2023-12-19 06:07:45,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 373. [2023-12-19 06:07:45,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 292 states have (on average 1.4349315068493151) internal successors, (419), 293 states have internal predecessors, (419), 70 states have call successors, (70), 10 states have call predecessors, (70), 10 states have return successors, (70), 69 states have call predecessors, (70), 70 states have call successors, (70) [2023-12-19 06:07:45,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 559 transitions. [2023-12-19 06:07:45,766 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 559 transitions. Word has length 92 [2023-12-19 06:07:45,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:07:45,766 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 559 transitions. [2023-12-19 06:07:45,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 06:07:45,766 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 559 transitions. [2023-12-19 06:07:45,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-19 06:07:45,768 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:07:45,768 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:07:45,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 06:07:45,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:07:45,973 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:07:45,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:07:45,974 INFO L85 PathProgramCache]: Analyzing trace with hash 117085605, now seen corresponding path program 1 times [2023-12-19 06:07:45,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:07:45,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234680413] [2023-12-19 06:07:45,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:07:45,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:07:45,996 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:07:45,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1223650498] [2023-12-19 06:07:45,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:07:45,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:07:45,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:07:46,017 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:07:46,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 06:07:46,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:07:46,516 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-19 06:07:46,518 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:07:47,470 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 96 proven. 30 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2023-12-19 06:07:47,470 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:08:16,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:08:16,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234680413] [2023-12-19 06:08:16,172 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:08:16,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223650498] [2023-12-19 06:08:16,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223650498] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 06:08:16,172 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-19 06:08:16,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2023-12-19 06:08:16,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390669074] [2023-12-19 06:08:16,173 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-19 06:08:16,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-19 06:08:16,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:08:16,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-19 06:08:16,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2023-12-19 06:08:16,177 INFO L87 Difference]: Start difference. First operand 373 states and 559 transitions. Second operand has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 12 states have internal predecessors, (36), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 06:08:18,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:08:18,213 INFO L93 Difference]: Finished difference Result 1051 states and 1567 transitions. [2023-12-19 06:08:18,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-19 06:08:18,213 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 12 states have internal predecessors, (36), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 92 [2023-12-19 06:08:18,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:08:18,217 INFO L225 Difference]: With dead ends: 1051 [2023-12-19 06:08:18,217 INFO L226 Difference]: Without dead ends: 686 [2023-12-19 06:08:18,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=233, Invalid=957, Unknown=0, NotChecked=0, Total=1190 [2023-12-19 06:08:18,219 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 276 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 680 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 06:08:18,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 479 Invalid, 722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 680 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 06:08:18,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2023-12-19 06:08:18,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 542. [2023-12-19 06:08:18,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 451 states have (on average 1.4368070953436807) internal successors, (648), 451 states have internal predecessors, (648), 78 states have call successors, (78), 12 states have call predecessors, (78), 12 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2023-12-19 06:08:18,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 804 transitions. [2023-12-19 06:08:18,249 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 804 transitions. Word has length 92 [2023-12-19 06:08:18,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:08:18,249 INFO L495 AbstractCegarLoop]: Abstraction has 542 states and 804 transitions. [2023-12-19 06:08:18,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 12 states have internal predecessors, (36), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 06:08:18,249 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 804 transitions. [2023-12-19 06:08:18,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-19 06:08:18,251 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:08:18,251 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:08:18,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 06:08:18,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:08:18,456 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:08:18,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:08:18,457 INFO L85 PathProgramCache]: Analyzing trace with hash 174343907, now seen corresponding path program 1 times [2023-12-19 06:08:18,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:08:18,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890662992] [2023-12-19 06:08:18,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:08:18,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:08:18,470 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:08:18,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2086155242] [2023-12-19 06:08:18,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:08:18,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:08:18,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:08:18,472 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:08:18,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 06:08:18,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:08:18,547 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-19 06:08:18,551 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:08:22,787 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 06:08:22,788 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:08:22,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:08:22,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890662992] [2023-12-19 06:08:22,788 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:08:22,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086155242] [2023-12-19 06:08:22,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086155242] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:08:22,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:08:22,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 06:08:22,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531930983] [2023-12-19 06:08:22,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:08:22,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 06:08:22,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:08:22,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 06:08:22,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-12-19 06:08:22,791 INFO L87 Difference]: Start difference. First operand 542 states and 804 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 06:08:27,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:08:27,098 INFO L93 Difference]: Finished difference Result 831 states and 1237 transitions. [2023-12-19 06:08:27,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-19 06:08:27,099 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 92 [2023-12-19 06:08:27,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:08:27,101 INFO L225 Difference]: With dead ends: 831 [2023-12-19 06:08:27,102 INFO L226 Difference]: Without dead ends: 613 [2023-12-19 06:08:27,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2023-12-19 06:08:27,103 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 321 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-19 06:08:27,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 570 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-19 06:08:27,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2023-12-19 06:08:27,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 544. [2023-12-19 06:08:27,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 453 states have (on average 1.434878587196468) internal successors, (650), 453 states have internal predecessors, (650), 78 states have call successors, (78), 12 states have call predecessors, (78), 12 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2023-12-19 06:08:27,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 806 transitions. [2023-12-19 06:08:27,136 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 806 transitions. Word has length 92 [2023-12-19 06:08:27,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:08:27,137 INFO L495 AbstractCegarLoop]: Abstraction has 544 states and 806 transitions. [2023-12-19 06:08:27,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 06:08:27,137 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 806 transitions. [2023-12-19 06:08:27,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-19 06:08:27,139 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:08:27,139 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:08:27,148 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-19 06:08:27,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:08:27,344 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:08:27,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:08:27,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1746939114, now seen corresponding path program 1 times [2023-12-19 06:08:27,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:08:27,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337711570] [2023-12-19 06:08:27,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:08:27,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:08:27,365 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:08:27,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1906871489] [2023-12-19 06:08:27,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:08:27,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:08:27,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:08:27,367 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:08:27,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 06:08:27,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:08:27,688 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-19 06:08:27,690 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:08:28,200 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 198 proven. 39 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-12-19 06:08:28,201 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:08:36,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:08:36,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337711570] [2023-12-19 06:08:36,104 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:08:36,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906871489] [2023-12-19 06:08:36,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906871489] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 06:08:36,104 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-19 06:08:36,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2023-12-19 06:08:36,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316209777] [2023-12-19 06:08:36,104 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-19 06:08:36,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-19 06:08:36,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:08:36,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-19 06:08:36,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=336, Unknown=1, NotChecked=0, Total=420 [2023-12-19 06:08:36,106 INFO L87 Difference]: Start difference. First operand 544 states and 806 transitions. Second operand has 14 states, 14 states have (on average 3.0) internal successors, (42), 13 states have internal predecessors, (42), 3 states have call successors, (13), 3 states have call predecessors, (13), 5 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-19 06:08:36,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:08:36,985 INFO L93 Difference]: Finished difference Result 1326 states and 1939 transitions. [2023-12-19 06:08:36,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-19 06:08:36,987 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 13 states have internal predecessors, (42), 3 states have call successors, (13), 3 states have call predecessors, (13), 5 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 92 [2023-12-19 06:08:36,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:08:36,991 INFO L225 Difference]: With dead ends: 1326 [2023-12-19 06:08:36,991 INFO L226 Difference]: Without dead ends: 808 [2023-12-19 06:08:36,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=269, Invalid=990, Unknown=1, NotChecked=0, Total=1260 [2023-12-19 06:08:36,994 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 258 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 06:08:36,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 471 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 605 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 06:08:36,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2023-12-19 06:08:37,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 677. [2023-12-19 06:08:37,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 585 states have (on average 1.4273504273504274) internal successors, (835), 585 states have internal predecessors, (835), 78 states have call successors, (78), 13 states have call predecessors, (78), 13 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2023-12-19 06:08:37,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 991 transitions. [2023-12-19 06:08:37,029 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 991 transitions. Word has length 92 [2023-12-19 06:08:37,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:08:37,029 INFO L495 AbstractCegarLoop]: Abstraction has 677 states and 991 transitions. [2023-12-19 06:08:37,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 13 states have internal predecessors, (42), 3 states have call successors, (13), 3 states have call predecessors, (13), 5 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-19 06:08:37,029 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 991 transitions. [2023-12-19 06:08:37,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-19 06:08:37,030 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:08:37,030 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:08:37,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-19 06:08:37,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-19 06:08:37,236 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:08:37,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:08:37,237 INFO L85 PathProgramCache]: Analyzing trace with hash 339626217, now seen corresponding path program 1 times [2023-12-19 06:08:37,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:08:37,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047813728] [2023-12-19 06:08:37,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:08:37,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:08:37,248 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:08:37,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [654469205] [2023-12-19 06:08:37,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:08:37,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:08:37,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:08:37,249 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:08:37,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 06:08:37,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:08:37,773 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-19 06:08:37,775 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:08:37,836 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 06:08:37,837 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:08:37,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:08:37,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047813728] [2023-12-19 06:08:37,837 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:08:37,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654469205] [2023-12-19 06:08:37,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654469205] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:08:37,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:08:37,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 06:08:37,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264839814] [2023-12-19 06:08:37,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:08:37,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 06:08:37,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:08:37,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 06:08:37,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 06:08:37,844 INFO L87 Difference]: Start difference. First operand 677 states and 991 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 06:08:38,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:08:38,026 INFO L93 Difference]: Finished difference Result 1140 states and 1672 transitions. [2023-12-19 06:08:38,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 06:08:38,027 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 92 [2023-12-19 06:08:38,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:08:38,029 INFO L225 Difference]: With dead ends: 1140 [2023-12-19 06:08:38,029 INFO L226 Difference]: Without dead ends: 647 [2023-12-19 06:08:38,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 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 06:08:38,030 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 63 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 06:08:38,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 256 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 06:08:38,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2023-12-19 06:08:38,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 611. [2023-12-19 06:08:38,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 519 states have (on average 1.4007707129094413) internal successors, (727), 519 states have internal predecessors, (727), 78 states have call successors, (78), 13 states have call predecessors, (78), 13 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2023-12-19 06:08:38,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 883 transitions. [2023-12-19 06:08:38,055 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 883 transitions. Word has length 92 [2023-12-19 06:08:38,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:08:38,055 INFO L495 AbstractCegarLoop]: Abstraction has 611 states and 883 transitions. [2023-12-19 06:08:38,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 06:08:38,055 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 883 transitions. [2023-12-19 06:08:38,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-19 06:08:38,056 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:08:38,056 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:08:38,062 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-19 06:08:38,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:08:38,262 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:08:38,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:08:38,263 INFO L85 PathProgramCache]: Analyzing trace with hash -2031413085, now seen corresponding path program 1 times [2023-12-19 06:08:38,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:08:38,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208274434] [2023-12-19 06:08:38,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:08:38,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:08:38,280 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:08:38,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [610314684] [2023-12-19 06:08:38,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:08:38,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:08:38,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:08:38,282 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:08:38,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-19 06:08:38,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:08:38,356 INFO L262 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-19 06:08:38,358 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:08:42,486 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 06:08:42,486 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:08:42,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:08:42,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208274434] [2023-12-19 06:08:42,486 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:08:42,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610314684] [2023-12-19 06:08:42,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610314684] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:08:42,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:08:42,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 06:08:42,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183803382] [2023-12-19 06:08:42,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:08:42,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 06:08:42,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:08:42,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 06:08:42,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-12-19 06:08:42,488 INFO L87 Difference]: Start difference. First operand 611 states and 883 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 06:08:46,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:08:46,863 INFO L93 Difference]: Finished difference Result 1100 states and 1614 transitions. [2023-12-19 06:08:46,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-19 06:08:46,864 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 92 [2023-12-19 06:08:46,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:08:46,866 INFO L225 Difference]: With dead ends: 1100 [2023-12-19 06:08:46,866 INFO L226 Difference]: Without dead ends: 733 [2023-12-19 06:08:46,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2023-12-19 06:08:46,868 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 284 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-19 06:08:46,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 525 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-19 06:08:46,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2023-12-19 06:08:46,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 609. [2023-12-19 06:08:46,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 609 states, 517 states have (on average 1.3984526112185687) internal successors, (723), 517 states have internal predecessors, (723), 78 states have call successors, (78), 13 states have call predecessors, (78), 13 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2023-12-19 06:08:46,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 879 transitions. [2023-12-19 06:08:46,892 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 879 transitions. Word has length 92 [2023-12-19 06:08:46,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:08:46,893 INFO L495 AbstractCegarLoop]: Abstraction has 609 states and 879 transitions. [2023-12-19 06:08:46,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 06:08:46,893 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 879 transitions. [2023-12-19 06:08:46,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-19 06:08:46,894 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:08:46,894 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:08:46,912 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-19 06:08:47,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-19 06:08:47,100 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:08:47,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:08:47,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1454207585, now seen corresponding path program 1 times [2023-12-19 06:08:47,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:08:47,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146816943] [2023-12-19 06:08:47,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:08:47,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:08:47,123 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:08:47,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [215553237] [2023-12-19 06:08:47,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:08:47,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:08:47,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:08:47,126 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:08:47,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-19 06:08:47,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:08:47,185 INFO L262 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-19 06:08:47,187 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:08:52,472 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 06:08:52,472 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:08:52,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:08:52,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146816943] [2023-12-19 06:08:52,472 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:08:52,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215553237] [2023-12-19 06:08:52,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215553237] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:08:52,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:08:52,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 06:08:52,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463629390] [2023-12-19 06:08:52,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:08:52,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 06:08:52,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:08:52,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 06:08:52,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-12-19 06:08:52,474 INFO L87 Difference]: Start difference. First operand 609 states and 879 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 06:08:58,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:08:58,412 INFO L93 Difference]: Finished difference Result 1096 states and 1606 transitions. [2023-12-19 06:08:58,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-19 06:08:58,412 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 92 [2023-12-19 06:08:58,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:08:58,414 INFO L225 Difference]: With dead ends: 1096 [2023-12-19 06:08:58,414 INFO L226 Difference]: Without dead ends: 707 [2023-12-19 06:08:58,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2023-12-19 06:08:58,416 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 212 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-19 06:08:58,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 687 Invalid, 677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 670 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-19 06:08:58,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2023-12-19 06:08:58,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 605. [2023-12-19 06:08:58,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 513 states have (on average 1.3976608187134503) internal successors, (717), 513 states have internal predecessors, (717), 78 states have call successors, (78), 13 states have call predecessors, (78), 13 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2023-12-19 06:08:58,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 873 transitions. [2023-12-19 06:08:58,440 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 873 transitions. Word has length 92 [2023-12-19 06:08:58,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:08:58,440 INFO L495 AbstractCegarLoop]: Abstraction has 605 states and 873 transitions. [2023-12-19 06:08:58,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 06:08:58,440 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 873 transitions. [2023-12-19 06:08:58,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-19 06:08:58,441 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:08:58,441 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:08:58,446 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-19 06:08:58,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-19 06:08:58,646 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:08:58,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:08:58,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1540699464, now seen corresponding path program 1 times [2023-12-19 06:08:58,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:08:58,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470854554] [2023-12-19 06:08:58,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:08:58,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:08:58,657 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:08:58,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [619958721] [2023-12-19 06:08:58,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:08:58,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:08:58,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:08:58,659 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:08:58,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-19 06:08:59,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:08:59,111 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-19 06:08:59,113 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:08:59,877 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 06:08:59,877 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:08:59,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:08:59,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470854554] [2023-12-19 06:08:59,877 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:08:59,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619958721] [2023-12-19 06:08:59,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619958721] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:08:59,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:08:59,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 06:08:59,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768920077] [2023-12-19 06:08:59,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:08:59,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 06:08:59,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:08:59,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 06:08:59,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-12-19 06:08:59,879 INFO L87 Difference]: Start difference. First operand 605 states and 873 transitions. Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 06:09:00,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:09:00,509 INFO L93 Difference]: Finished difference Result 884 states and 1288 transitions. [2023-12-19 06:09:00,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 06:09:00,510 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 93 [2023-12-19 06:09:00,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:09:00,512 INFO L225 Difference]: With dead ends: 884 [2023-12-19 06:09:00,512 INFO L226 Difference]: Without dead ends: 807 [2023-12-19 06:09:00,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-12-19 06:09:00,513 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 187 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 06:09:00,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 535 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 06:09:00,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2023-12-19 06:09:00,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 715. [2023-12-19 06:09:00,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 715 states, 608 states have (on average 1.4095394736842106) internal successors, (857), 608 states have internal predecessors, (857), 91 states have call successors, (91), 15 states have call predecessors, (91), 15 states have return successors, (91), 91 states have call predecessors, (91), 91 states have call successors, (91) [2023-12-19 06:09:00,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 1039 transitions. [2023-12-19 06:09:00,540 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 1039 transitions. Word has length 93 [2023-12-19 06:09:00,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:09:00,540 INFO L495 AbstractCegarLoop]: Abstraction has 715 states and 1039 transitions. [2023-12-19 06:09:00,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 06:09:00,540 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 1039 transitions. [2023-12-19 06:09:00,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-19 06:09:00,541 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:09:00,541 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:09:00,562 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-19 06:09:00,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-19 06:09:00,760 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:09:00,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:09:00,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1597957766, now seen corresponding path program 1 times [2023-12-19 06:09:00,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:09:00,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22108790] [2023-12-19 06:09:00,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:09:00,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:09:00,787 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:09:00,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1818407753] [2023-12-19 06:09:00,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:09:00,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:09:00,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:09:00,800 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:09:00,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-19 06:09:00,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:09:00,856 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 06:09:00,858 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:09:01,906 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 06:09:01,906 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:09:01,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:09:01,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22108790] [2023-12-19 06:09:01,906 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:09:01,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818407753] [2023-12-19 06:09:01,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818407753] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:09:01,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:09:01,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 06:09:01,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904233652] [2023-12-19 06:09:01,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:09:01,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 06:09:01,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:09:01,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 06:09:01,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-19 06:09:01,909 INFO L87 Difference]: Start difference. First operand 715 states and 1039 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 06:09:03,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:09:03,288 INFO L93 Difference]: Finished difference Result 1213 states and 1780 transitions. [2023-12-19 06:09:03,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-19 06:09:03,288 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 93 [2023-12-19 06:09:03,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:09:03,291 INFO L225 Difference]: With dead ends: 1213 [2023-12-19 06:09:03,291 INFO L226 Difference]: Without dead ends: 1035 [2023-12-19 06:09:03,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=217, Invalid=713, Unknown=0, NotChecked=0, Total=930 [2023-12-19 06:09:03,292 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 493 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 817 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 06:09:03,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [493 Valid, 817 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 737 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 06:09:03,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1035 states. [2023-12-19 06:09:03,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1035 to 880. [2023-12-19 06:09:03,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 880 states, 743 states have (on average 1.4104979811574698) internal successors, (1048), 743 states have internal predecessors, (1048), 117 states have call successors, (117), 19 states have call predecessors, (117), 19 states have return successors, (117), 117 states have call predecessors, (117), 117 states have call successors, (117) [2023-12-19 06:09:03,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1282 transitions. [2023-12-19 06:09:03,327 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1282 transitions. Word has length 93 [2023-12-19 06:09:03,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:09:03,327 INFO L495 AbstractCegarLoop]: Abstraction has 880 states and 1282 transitions. [2023-12-19 06:09:03,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 06:09:03,328 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1282 transitions. [2023-12-19 06:09:03,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-19 06:09:03,328 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:09:03,328 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:09:03,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-19 06:09:03,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-19 06:09:03,534 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:09:03,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:09:03,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1733199478, now seen corresponding path program 1 times [2023-12-19 06:09:03,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:09:03,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764413023] [2023-12-19 06:09:03,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:09:03,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:09:03,544 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:09:03,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1526659017] [2023-12-19 06:09:03,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:09:03,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:09:03,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:09:03,545 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:09:03,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-19 06:09:03,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:09:03,606 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 06:09:03,608 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:09:03,636 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 78 proven. 3 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-12-19 06:09:03,636 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:09:03,710 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 33 proven. 3 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-12-19 06:09:03,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:09:03,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764413023] [2023-12-19 06:09:03,711 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:09:03,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526659017] [2023-12-19 06:09:03,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526659017] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 06:09:03,711 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 06:09:03,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2023-12-19 06:09:03,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072211750] [2023-12-19 06:09:03,711 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 06:09:03,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 06:09:03,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:09:03,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 06:09:03,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-19 06:09:03,712 INFO L87 Difference]: Start difference. First operand 880 states and 1282 transitions. Second operand has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 2 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-19 06:09:03,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:09:03,922 INFO L93 Difference]: Finished difference Result 1168 states and 1681 transitions. [2023-12-19 06:09:03,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 06:09:03,922 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 2 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 93 [2023-12-19 06:09:03,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:09:03,924 INFO L225 Difference]: With dead ends: 1168 [2023-12-19 06:09:03,924 INFO L226 Difference]: Without dead ends: 645 [2023-12-19 06:09:03,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 177 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2023-12-19 06:09:03,925 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 267 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 06:09:03,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 415 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 06:09:03,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2023-12-19 06:09:03,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 616. [2023-12-19 06:09:03,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 518 states have (on average 1.3803088803088803) internal successors, (715), 518 states have internal predecessors, (715), 78 states have call successors, (78), 19 states have call predecessors, (78), 19 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2023-12-19 06:09:03,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 871 transitions. [2023-12-19 06:09:03,950 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 871 transitions. Word has length 93 [2023-12-19 06:09:03,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:09:03,950 INFO L495 AbstractCegarLoop]: Abstraction has 616 states and 871 transitions. [2023-12-19 06:09:03,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 2 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-19 06:09:03,951 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 871 transitions. [2023-12-19 06:09:03,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-19 06:09:03,951 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:09:03,951 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:09:03,974 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-19 06:09:04,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:09:04,172 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:09:04,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:09:04,173 INFO L85 PathProgramCache]: Analyzing trace with hash 973419916, now seen corresponding path program 1 times [2023-12-19 06:09:04,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:09:04,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213129749] [2023-12-19 06:09:04,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:09:04,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:09:04,183 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:09:04,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [742461574] [2023-12-19 06:09:04,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:09:04,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:09:04,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:09:04,184 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:09:04,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-19 06:09:04,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:09:04,680 INFO L262 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-19 06:09:04,682 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:09:05,429 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 06:09:05,429 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:09:05,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:09:05,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213129749] [2023-12-19 06:09:05,430 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:09:05,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742461574] [2023-12-19 06:09:05,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742461574] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:09:05,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:09:05,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 06:09:05,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685904700] [2023-12-19 06:09:05,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:09:05,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 06:09:05,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:09:05,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 06:09:05,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-12-19 06:09:05,431 INFO L87 Difference]: Start difference. First operand 616 states and 871 transitions. Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 06:09:06,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:09:06,044 INFO L93 Difference]: Finished difference Result 870 states and 1239 transitions. [2023-12-19 06:09:06,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 06:09:06,044 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 93 [2023-12-19 06:09:06,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:09:06,046 INFO L225 Difference]: With dead ends: 870 [2023-12-19 06:09:06,046 INFO L226 Difference]: Without dead ends: 708 [2023-12-19 06:09:06,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-12-19 06:09:06,048 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 169 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 06:09:06,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 427 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 06:09:06,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2023-12-19 06:09:06,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 616. [2023-12-19 06:09:06,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 518 states have (on average 1.3803088803088803) internal successors, (715), 518 states have internal predecessors, (715), 78 states have call successors, (78), 19 states have call predecessors, (78), 19 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2023-12-19 06:09:06,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 871 transitions. [2023-12-19 06:09:06,092 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 871 transitions. Word has length 93 [2023-12-19 06:09:06,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:09:06,092 INFO L495 AbstractCegarLoop]: Abstraction has 616 states and 871 transitions. [2023-12-19 06:09:06,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 06:09:06,092 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 871 transitions. [2023-12-19 06:09:06,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-19 06:09:06,093 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:09:06,093 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:09:06,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-19 06:09:06,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-19 06:09:06,312 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:09:06,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:09:06,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1030678218, now seen corresponding path program 1 times [2023-12-19 06:09:06,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:09:06,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300567106] [2023-12-19 06:09:06,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:09:06,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:09:06,326 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:09:06,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2145702771] [2023-12-19 06:09:06,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:09:06,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:09:06,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:09:06,342 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:09:06,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-19 06:09:06,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:09:06,403 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 06:09:06,406 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:09:07,450 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 06:09:07,450 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:09:07,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:09:07,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300567106] [2023-12-19 06:09:07,451 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:09:07,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145702771] [2023-12-19 06:09:07,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2145702771] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:09:07,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:09:07,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 06:09:07,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142223440] [2023-12-19 06:09:07,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:09:07,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 06:09:07,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:09:07,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 06:09:07,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-19 06:09:07,453 INFO L87 Difference]: Start difference. First operand 616 states and 871 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 06:09:08,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:09:08,679 INFO L93 Difference]: Finished difference Result 1140 states and 1630 transitions. [2023-12-19 06:09:08,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-19 06:09:08,680 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 93 [2023-12-19 06:09:08,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:09:08,682 INFO L225 Difference]: With dead ends: 1140 [2023-12-19 06:09:08,682 INFO L226 Difference]: Without dead ends: 952 [2023-12-19 06:09:08,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=217, Invalid=713, Unknown=0, NotChecked=0, Total=930 [2023-12-19 06:09:08,684 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 447 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 06:09:08,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [447 Valid, 675 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 510 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 06:09:08,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2023-12-19 06:09:08,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 718. [2023-12-19 06:09:08,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 718 states, 604 states have (on average 1.3791390728476822) internal successors, (833), 604 states have internal predecessors, (833), 91 states have call successors, (91), 22 states have call predecessors, (91), 22 states have return successors, (91), 91 states have call predecessors, (91), 91 states have call successors, (91) [2023-12-19 06:09:08,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 1015 transitions. [2023-12-19 06:09:08,716 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 1015 transitions. Word has length 93 [2023-12-19 06:09:08,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:09:08,716 INFO L495 AbstractCegarLoop]: Abstraction has 718 states and 1015 transitions. [2023-12-19 06:09:08,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 06:09:08,716 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 1015 transitions. [2023-12-19 06:09:08,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-19 06:09:08,717 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:09:08,717 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:09:08,740 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-19 06:09:08,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-19 06:09:08,923 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:09:08,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:09:08,923 INFO L85 PathProgramCache]: Analyzing trace with hash 23148666, now seen corresponding path program 1 times [2023-12-19 06:09:08,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:09:08,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227833717] [2023-12-19 06:09:08,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:09:08,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:09:08,938 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:09:08,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1954960222] [2023-12-19 06:09:08,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:09:08,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:09:08,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:09:08,940 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:09:08,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-19 06:09:08,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:09:09,000 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-19 06:09:09,001 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:09:09,151 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 138 proven. 9 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2023-12-19 06:09:09,151 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:09:09,296 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 27 proven. 9 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-12-19 06:09:09,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:09:09,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227833717] [2023-12-19 06:09:09,296 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:09:09,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954960222] [2023-12-19 06:09:09,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954960222] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 06:09:09,296 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 06:09:09,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2023-12-19 06:09:09,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710181548] [2023-12-19 06:09:09,297 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 06:09:09,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-19 06:09:09,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:09:09,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-19 06:09:09,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2023-12-19 06:09:09,298 INFO L87 Difference]: Start difference. First operand 718 states and 1015 transitions. Second operand has 18 states, 18 states have (on average 3.611111111111111) internal successors, (65), 18 states have internal predecessors, (65), 4 states have call successors, (26), 3 states have call predecessors, (26), 5 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2023-12-19 06:09:10,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:09:10,957 INFO L93 Difference]: Finished difference Result 2446 states and 3413 transitions. [2023-12-19 06:09:10,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-12-19 06:09:10,957 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.611111111111111) internal successors, (65), 18 states have internal predecessors, (65), 4 states have call successors, (26), 3 states have call predecessors, (26), 5 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) Word has length 94 [2023-12-19 06:09:10,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:09:10,963 INFO L225 Difference]: With dead ends: 2446 [2023-12-19 06:09:10,964 INFO L226 Difference]: Without dead ends: 2060 [2023-12-19 06:09:10,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1299 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=879, Invalid=3281, Unknown=0, NotChecked=0, Total=4160 [2023-12-19 06:09:10,966 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 1473 mSDsluCounter, 1341 mSDsCounter, 0 mSdLazyCounter, 891 mSolverCounterSat, 590 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1478 SdHoareTripleChecker+Valid, 1480 SdHoareTripleChecker+Invalid, 1481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 590 IncrementalHoareTripleChecker+Valid, 891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 06:09:10,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1478 Valid, 1480 Invalid, 1481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [590 Valid, 891 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 06:09:10,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2060 states. [2023-12-19 06:09:11,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2060 to 1156. [2023-12-19 06:09:11,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1156 states, 943 states have (on average 1.354188759278897) internal successors, (1277), 947 states have internal predecessors, (1277), 161 states have call successors, (161), 51 states have call predecessors, (161), 51 states have return successors, (161), 157 states have call predecessors, (161), 161 states have call successors, (161) [2023-12-19 06:09:11,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1156 states to 1156 states and 1599 transitions. [2023-12-19 06:09:11,043 INFO L78 Accepts]: Start accepts. Automaton has 1156 states and 1599 transitions. Word has length 94 [2023-12-19 06:09:11,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:09:11,043 INFO L495 AbstractCegarLoop]: Abstraction has 1156 states and 1599 transitions. [2023-12-19 06:09:11,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.611111111111111) internal successors, (65), 18 states have internal predecessors, (65), 4 states have call successors, (26), 3 states have call predecessors, (26), 5 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2023-12-19 06:09:11,044 INFO L276 IsEmpty]: Start isEmpty. Operand 1156 states and 1599 transitions. [2023-12-19 06:09:11,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-19 06:09:11,044 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:09:11,045 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:09:11,072 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-12-19 06:09:11,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-19 06:09:11,251 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:09:11,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:09:11,251 INFO L85 PathProgramCache]: Analyzing trace with hash 709226041, now seen corresponding path program 1 times [2023-12-19 06:09:11,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:09:11,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979727550] [2023-12-19 06:09:11,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:09:11,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:09:11,263 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:09:11,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [568653378] [2023-12-19 06:09:11,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:09:11,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:09:11,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:09:11,264 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:09:11,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-19 06:09:11,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:09:11,342 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-19 06:09:11,346 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:09:14,817 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 06:09:14,817 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:09:14,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:09:14,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979727550] [2023-12-19 06:09:14,817 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:09:14,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568653378] [2023-12-19 06:09:14,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568653378] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:09:14,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:09:14,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 06:09:14,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603583950] [2023-12-19 06:09:14,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:09:14,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 06:09:14,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:09:14,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 06:09:14,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-19 06:09:14,819 INFO L87 Difference]: Start difference. First operand 1156 states and 1599 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 states have internal predecessors, (32), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 06:09:22,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:09:22,582 INFO L93 Difference]: Finished difference Result 1833 states and 2556 transitions. [2023-12-19 06:09:22,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-19 06:09:22,582 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 states have internal predecessors, (32), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 94 [2023-12-19 06:09:22,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:09:22,586 INFO L225 Difference]: With dead ends: 1833 [2023-12-19 06:09:22,586 INFO L226 Difference]: Without dead ends: 1462 [2023-12-19 06:09:22,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=380, Invalid=1102, Unknown=0, NotChecked=0, Total=1482 [2023-12-19 06:09:22,587 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 499 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 836 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-19 06:09:22,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [499 Valid, 836 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 633 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-19 06:09:22,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1462 states. [2023-12-19 06:09:22,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1462 to 1165. [2023-12-19 06:09:22,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1165 states, 952 states have (on average 1.35609243697479) internal successors, (1291), 956 states have internal predecessors, (1291), 161 states have call successors, (161), 51 states have call predecessors, (161), 51 states have return successors, (161), 157 states have call predecessors, (161), 161 states have call successors, (161) [2023-12-19 06:09:22,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1165 states to 1165 states and 1613 transitions. [2023-12-19 06:09:22,648 INFO L78 Accepts]: Start accepts. Automaton has 1165 states and 1613 transitions. Word has length 94 [2023-12-19 06:09:22,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:09:22,648 INFO L495 AbstractCegarLoop]: Abstraction has 1165 states and 1613 transitions. [2023-12-19 06:09:22,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 states have internal predecessors, (32), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 06:09:22,649 INFO L276 IsEmpty]: Start isEmpty. Operand 1165 states and 1613 transitions. [2023-12-19 06:09:22,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-19 06:09:22,649 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:09:22,649 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:09:22,670 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-19 06:09:22,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-19 06:09:22,858 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:09:22,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:09:22,858 INFO L85 PathProgramCache]: Analyzing trace with hash -157378887, now seen corresponding path program 1 times [2023-12-19 06:09:22,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:09:22,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110150484] [2023-12-19 06:09:22,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:09:22,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:09:22,869 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:09:22,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1811047012] [2023-12-19 06:09:22,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:09:22,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:09:22,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:09:22,873 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:09:22,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-19 06:09:23,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:09:23,278 INFO L262 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-19 06:09:23,280 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:09:23,555 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 156 proven. 12 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-19 06:09:23,555 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:09:24,487 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 24 proven. 12 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-12-19 06:09:24,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:09:24,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110150484] [2023-12-19 06:09:24,487 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:09:24,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811047012] [2023-12-19 06:09:24,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1811047012] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 06:09:24,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 06:09:24,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 21 [2023-12-19 06:09:24,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773442510] [2023-12-19 06:09:24,488 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 06:09:24,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-19 06:09:24,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:09:24,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-19 06:09:24,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2023-12-19 06:09:24,490 INFO L87 Difference]: Start difference. First operand 1165 states and 1613 transitions. Second operand has 21 states, 21 states have (on average 3.0) internal successors, (63), 21 states have internal predecessors, (63), 4 states have call successors, (26), 3 states have call predecessors, (26), 5 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2023-12-19 06:09:27,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:09:27,815 INFO L93 Difference]: Finished difference Result 4032 states and 5619 transitions. [2023-12-19 06:09:27,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-12-19 06:09:27,815 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.0) internal successors, (63), 21 states have internal predecessors, (63), 4 states have call successors, (26), 3 states have call predecessors, (26), 5 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) Word has length 94 [2023-12-19 06:09:27,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:09:27,823 INFO L225 Difference]: With dead ends: 4032 [2023-12-19 06:09:27,823 INFO L226 Difference]: Without dead ends: 3230 [2023-12-19 06:09:27,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1032 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=785, Invalid=2875, Unknown=0, NotChecked=0, Total=3660 [2023-12-19 06:09:27,826 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 1068 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 1262 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1081 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 1468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 1262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-19 06:09:27,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1081 Valid, 784 Invalid, 1468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 1262 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-19 06:09:27,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3230 states. [2023-12-19 06:09:28,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3230 to 2191. [2023-12-19 06:09:28,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2191 states, 1739 states have (on average 1.335250143760782) internal successors, (2322), 1753 states have internal predecessors, (2322), 335 states have call successors, (335), 116 states have call predecessors, (335), 116 states have return successors, (335), 321 states have call predecessors, (335), 335 states have call successors, (335) [2023-12-19 06:09:28,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2191 states to 2191 states and 2992 transitions. [2023-12-19 06:09:28,015 INFO L78 Accepts]: Start accepts. Automaton has 2191 states and 2992 transitions. Word has length 94 [2023-12-19 06:09:28,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:09:28,015 INFO L495 AbstractCegarLoop]: Abstraction has 2191 states and 2992 transitions. [2023-12-19 06:09:28,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.0) internal successors, (63), 21 states have internal predecessors, (63), 4 states have call successors, (26), 3 states have call predecessors, (26), 5 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2023-12-19 06:09:28,015 INFO L276 IsEmpty]: Start isEmpty. Operand 2191 states and 2992 transitions. [2023-12-19 06:09:28,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-19 06:09:28,017 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:09:28,017 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:09:28,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-19 06:09:28,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:09:28,223 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:09:28,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:09:28,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1052409747, now seen corresponding path program 1 times [2023-12-19 06:09:28,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:09:28,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222761000] [2023-12-19 06:09:28,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:09:28,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:09:28,236 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:09:28,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1060790544] [2023-12-19 06:09:28,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:09:28,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:09:28,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:09:28,237 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:09:28,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-19 06:09:28,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:09:28,302 INFO L262 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-19 06:09:28,306 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:10:02,594 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 06:10:02,594 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:10:02,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:10:02,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222761000] [2023-12-19 06:10:02,594 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:10:02,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060790544] [2023-12-19 06:10:02,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1060790544] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:10:02,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:10:02,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-12-19 06:10:02,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13144301] [2023-12-19 06:10:02,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:10:02,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-19 06:10:02,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:10:02,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-19 06:10:02,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-12-19 06:10:02,596 INFO L87 Difference]: Start difference. First operand 2191 states and 2992 transitions. Second operand has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 13 states have internal predecessors, (33), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 06:10:03,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:10:03,452 INFO L93 Difference]: Finished difference Result 4564 states and 6211 transitions. [2023-12-19 06:10:03,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-19 06:10:03,453 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 13 states have internal predecessors, (33), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 95 [2023-12-19 06:10:03,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:10:03,459 INFO L225 Difference]: With dead ends: 4564 [2023-12-19 06:10:03,459 INFO L226 Difference]: Without dead ends: 2429 [2023-12-19 06:10:03,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=141, Invalid=509, Unknown=0, NotChecked=0, Total=650 [2023-12-19 06:10:03,462 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 232 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 06:10:03,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 648 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 06:10:03,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2429 states. [2023-12-19 06:10:03,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2429 to 2237. [2023-12-19 06:10:03,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2237 states, 1785 states have (on average 1.3327731092436974) internal successors, (2379), 1799 states have internal predecessors, (2379), 335 states have call successors, (335), 116 states have call predecessors, (335), 116 states have return successors, (335), 321 states have call predecessors, (335), 335 states have call successors, (335) [2023-12-19 06:10:03,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2237 states to 2237 states and 3049 transitions. [2023-12-19 06:10:03,632 INFO L78 Accepts]: Start accepts. Automaton has 2237 states and 3049 transitions. Word has length 95 [2023-12-19 06:10:03,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:10:03,632 INFO L495 AbstractCegarLoop]: Abstraction has 2237 states and 3049 transitions. [2023-12-19 06:10:03,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 13 states have internal predecessors, (33), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 06:10:03,632 INFO L276 IsEmpty]: Start isEmpty. Operand 2237 states and 3049 transitions. [2023-12-19 06:10:03,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-19 06:10:03,633 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:10:03,633 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:10:03,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-19 06:10:03,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:10:03,839 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:10:03,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:10:03,839 INFO L85 PathProgramCache]: Analyzing trace with hash -747208783, now seen corresponding path program 1 times [2023-12-19 06:10:03,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:10:03,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080317888] [2023-12-19 06:10:03,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:10:03,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:10:03,853 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:10:03,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1631912076] [2023-12-19 06:10:03,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:10:03,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:10:03,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:10:03,854 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:10:03,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-19 06:10:03,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:10:03,936 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-19 06:10:03,939 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:13:32,796 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 06:13:32,796 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:13:32,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:13:32,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080317888] [2023-12-19 06:13:32,797 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:13:32,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631912076] [2023-12-19 06:13:32,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631912076] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:13:32,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:13:32,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-19 06:13:32,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369449834] [2023-12-19 06:13:32,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:13:32,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-19 06:13:32,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:13:32,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-19 06:13:32,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-12-19 06:13:32,798 INFO L87 Difference]: Start difference. First operand 2237 states and 3049 transitions. Second operand has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 12 states have internal predecessors, (33), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 06:13:33,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:13:33,551 INFO L93 Difference]: Finished difference Result 2437 states and 3293 transitions. [2023-12-19 06:13:33,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-19 06:13:33,552 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 12 states have internal predecessors, (33), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 95 [2023-12-19 06:13:33,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:13:33,559 INFO L225 Difference]: With dead ends: 2437 [2023-12-19 06:13:33,559 INFO L226 Difference]: Without dead ends: 2435 [2023-12-19 06:13:33,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=129, Invalid=471, Unknown=0, NotChecked=0, Total=600 [2023-12-19 06:13:33,560 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 205 mSDsluCounter, 656 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 06:13:33,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 748 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 06:13:33,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2435 states. [2023-12-19 06:13:33,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2435 to 2279. [2023-12-19 06:13:33,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2279 states, 1827 states have (on average 1.3300492610837438) internal successors, (2430), 1841 states have internal predecessors, (2430), 335 states have call successors, (335), 116 states have call predecessors, (335), 116 states have return successors, (335), 321 states have call predecessors, (335), 335 states have call successors, (335) [2023-12-19 06:13:33,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2279 states to 2279 states and 3100 transitions. [2023-12-19 06:13:33,769 INFO L78 Accepts]: Start accepts. Automaton has 2279 states and 3100 transitions. Word has length 95 [2023-12-19 06:13:33,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:13:33,770 INFO L495 AbstractCegarLoop]: Abstraction has 2279 states and 3100 transitions. [2023-12-19 06:13:33,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 12 states have internal predecessors, (33), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 06:13:33,771 INFO L276 IsEmpty]: Start isEmpty. Operand 2279 states and 3100 transitions. [2023-12-19 06:13:33,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-19 06:13:33,772 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:13:33,772 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:13:33,778 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-12-19 06:13:33,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:13:33,979 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:13:33,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:13:33,979 INFO L85 PathProgramCache]: Analyzing trace with hash 2022047596, now seen corresponding path program 1 times [2023-12-19 06:13:33,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:13:33,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634720256] [2023-12-19 06:13:33,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:13:33,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:13:33,988 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:13:33,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [788831011] [2023-12-19 06:13:33,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:13:33,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:13:33,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:13:33,989 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:13:34,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-19 06:13:34,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:13:34,081 INFO L262 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-19 06:13:34,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-19 06:21:40,207 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 06:21:40,207 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 06:21:40,263 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-19 06:21:40,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-12-19 06:21:40,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:21:40,469 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 97 with TraceHistMax 13,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-43-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-2-2-2-2-2-2-2-1 context. [2023-12-19 06:21:40,474 INFO L445 BasicCegarLoop]: Path program histogram: [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 06:21:40,475 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 06:21:40,477 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 06:21:40 BoogieIcfgContainer [2023-12-19 06:21:40,477 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 06:21:40,477 INFO L158 Benchmark]: Toolchain (without parser) took 871613.17ms. Allocated memory was 228.6MB in the beginning and 1.7GB in the end (delta: 1.4GB). Free memory was 178.0MB in the beginning and 1.2GB in the end (delta: -1.0GB). Peak memory consumption was 1.0GB. Max. memory is 8.0GB. [2023-12-19 06:21:40,477 INFO L158 Benchmark]: CDTParser took 0.44ms. Allocated memory is still 168.8MB. Free memory was 118.2MB in the beginning and 118.1MB in the end (delta: 89.7kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 06:21:40,477 INFO L158 Benchmark]: CACSL2BoogieTranslator took 260.59ms. Allocated memory is still 228.6MB. Free memory was 178.0MB in the beginning and 164.4MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-19 06:21:40,477 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.08ms. Allocated memory is still 228.6MB. Free memory was 164.4MB in the beginning and 160.7MB in the end (delta: 3.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-19 06:21:40,478 INFO L158 Benchmark]: Boogie Preprocessor took 63.11ms. Allocated memory is still 228.6MB. Free memory was 160.7MB in the beginning and 155.5MB in the end (delta: 5.2MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-19 06:21:40,478 INFO L158 Benchmark]: RCFGBuilder took 655.97ms. Allocated memory is still 228.6MB. Free memory was 155.5MB in the beginning and 130.3MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. [2023-12-19 06:21:40,478 INFO L158 Benchmark]: TraceAbstraction took 870573.35ms. Allocated memory was 228.6MB in the beginning and 1.7GB in the end (delta: 1.4GB). Free memory was 129.3MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 985.4MB. Max. memory is 8.0GB. [2023-12-19 06:21:40,479 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44ms. Allocated memory is still 168.8MB. Free memory was 118.2MB in the beginning and 118.1MB in the end (delta: 89.7kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 260.59ms. Allocated memory is still 228.6MB. Free memory was 178.0MB in the beginning and 164.4MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 55.08ms. Allocated memory is still 228.6MB. Free memory was 164.4MB in the beginning and 160.7MB in the end (delta: 3.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 63.11ms. Allocated memory is still 228.6MB. Free memory was 160.7MB in the beginning and 155.5MB in the end (delta: 5.2MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 655.97ms. Allocated memory is still 228.6MB. Free memory was 155.5MB in the beginning and 130.3MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. * TraceAbstraction took 870573.35ms. Allocated memory was 228.6MB in the beginning and 1.7GB in the end (delta: 1.4GB). Free memory was 129.3MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 985.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 97 with TraceHistMax 13,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-43-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-2-2-2-2-2-2-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 61 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 870.5s, OverallIterations: 22, TraceHistogramMax: 13, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 55.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7419 SdHoareTripleChecker+Valid, 25.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7389 mSDsluCounter, 12154 SdHoareTripleChecker+Invalid, 24.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9790 mSDsCounter, 1289 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9597 IncrementalHoareTripleChecker+Invalid, 10886 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1289 mSolverCounterUnsat, 2364 mSDtfsCounter, 9597 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2644 GetRequests, 2140 SyntacticMatches, 1 SemanticMatches, 503 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4405 ImplicationChecksByTransitivity, 47.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2279occurred in iteration=21, InterpolantAutomatonStates: 398, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 21 MinimizatonAttempts, 4021 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 3.6s SatisfiabilityAnalysisTime, 318.2s InterpolantComputationTime, 2034 NumberOfCodeBlocks, 2034 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 2292 ConstructedInterpolants, 7 QuantifiedInterpolants, 23541 SizeOfPredicates, 273 NumberOfNonLiveVariables, 5487 ConjunctsInSsa, 386 ConjunctsInUnsatCore, 25 InterpolantComputations, 16 PerfectInterpolantSequences, 7638/7800 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown