/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-12.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 04:27:35,149 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 04:27:35,185 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 04:27:35,188 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 04:27:35,189 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 04:27:35,202 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 04:27:35,202 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 04:27:35,203 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 04:27:35,203 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 04:27:35,203 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 04:27:35,204 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 04:27:35,204 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 04:27:35,204 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 04:27:35,205 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 04:27:35,205 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 04:27:35,205 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 04:27:35,205 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 04:27:35,206 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 04:27:35,206 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 04:27:35,206 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 04:27:35,207 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 04:27:35,207 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 04:27:35,207 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 04:27:35,208 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 04:27:35,208 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 04:27:35,208 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 04:27:35,208 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 04:27:35,209 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 04:27:35,209 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 04:27:35,209 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 04:27:35,209 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 04:27:35,210 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 04:27:35,210 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 04:27:35,210 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 04:27:35,210 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 04:27:35,211 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 04:27:35,211 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 04:27:35,211 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 04:27:35,211 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 04:27:35,211 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 04:27:35,212 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 04:27:35,212 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 04:27:35,212 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 04:27:35,212 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 04:27:35,417 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 04:27:35,439 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 04:27:35,441 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 04:27:35,442 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 04:27:35,443 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 04:27:35,444 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-12.i [2023-12-16 04:27:36,541 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 04:27:36,715 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 04:27:36,716 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-12.i [2023-12-16 04:27:36,723 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/776d796f7/0dacf3e8c2cb4400abbf93ad22362017/FLAGea74e9de0 [2023-12-16 04:27:36,736 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/776d796f7/0dacf3e8c2cb4400abbf93ad22362017 [2023-12-16 04:27:36,738 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 04:27:36,740 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 04:27:36,741 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 04:27:36,741 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 04:27:36,745 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 04:27:36,746 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:27:36" (1/1) ... [2023-12-16 04:27:36,747 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@604c6b86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:27:36, skipping insertion in model container [2023-12-16 04:27:36,747 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:27:36" (1/1) ... [2023-12-16 04:27:36,772 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 04:27:36,892 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-12.i[916,929] [2023-12-16 04:27:36,941 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 04:27:36,949 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 04:27:36,959 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-12.i[916,929] [2023-12-16 04:27:36,987 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 04:27:37,004 INFO L206 MainTranslator]: Completed translation [2023-12-16 04:27:37,004 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:27:37 WrapperNode [2023-12-16 04:27:37,005 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 04:27:37,005 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 04:27:37,005 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 04:27:37,006 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 04:27:37,011 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:27:37" (1/1) ... [2023-12-16 04:27:37,025 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:27:37" (1/1) ... [2023-12-16 04:27:37,066 INFO L138 Inliner]: procedures = 26, calls = 151, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 443 [2023-12-16 04:27:37,066 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 04:27:37,067 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 04:27:37,067 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 04:27:37,067 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 04:27:37,091 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:27:37" (1/1) ... [2023-12-16 04:27:37,091 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:27:37" (1/1) ... [2023-12-16 04:27:37,096 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:27:37" (1/1) ... [2023-12-16 04:27:37,122 INFO L175 MemorySlicer]: Split 123 memory accesses to 2 slices as follows [2, 121]. 98 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 11]. The 14 writes are split as follows [0, 14]. [2023-12-16 04:27:37,122 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:27:37" (1/1) ... [2023-12-16 04:27:37,122 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:27:37" (1/1) ... [2023-12-16 04:27:37,137 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:27:37" (1/1) ... [2023-12-16 04:27:37,141 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:27:37" (1/1) ... [2023-12-16 04:27:37,147 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:27:37" (1/1) ... [2023-12-16 04:27:37,150 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:27:37" (1/1) ... [2023-12-16 04:27:37,155 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 04:27:37,156 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 04:27:37,156 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 04:27:37,156 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 04:27:37,157 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:27:37" (1/1) ... [2023-12-16 04:27:37,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 04:27:37,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:27:37,227 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 04:27:37,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 04:27:37,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 04:27:37,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-16 04:27:37,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-16 04:27:37,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-16 04:27:37,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-16 04:27:37,272 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 04:27:37,273 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 04:27:37,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 04:27:37,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-16 04:27:37,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 04:27:37,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 04:27:37,381 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 04:27:37,383 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 04:27:38,077 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 04:27:38,129 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 04:27:38,129 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 04:27:38,129 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:27:38 BoogieIcfgContainer [2023-12-16 04:27:38,129 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 04:27:38,145 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 04:27:38,145 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 04:27:38,148 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 04:27:38,148 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 04:27:36" (1/3) ... [2023-12-16 04:27:38,149 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c7fd6aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:27:38, skipping insertion in model container [2023-12-16 04:27:38,149 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:27:37" (2/3) ... [2023-12-16 04:27:38,150 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c7fd6aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:27:38, skipping insertion in model container [2023-12-16 04:27:38,150 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:27:38" (3/3) ... [2023-12-16 04:27:38,151 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-s_file-12.i [2023-12-16 04:27:38,165 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 04:27:38,173 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 04:27:38,250 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 04:27:38,255 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;@a8edd59, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 04:27:38,255 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 04:27:38,269 INFO L276 IsEmpty]: Start isEmpty. Operand has 91 states, 72 states have (on average 1.4305555555555556) internal successors, (103), 73 states have internal predecessors, (103), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-16 04:27:38,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-16 04:27:38,313 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:27:38,314 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:27:38,314 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:27:38,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:27:38,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1024814149, now seen corresponding path program 1 times [2023-12-16 04:27:38,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:27:38,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543075445] [2023-12-16 04:27:38,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:27:38,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:27:38,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:27:38,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:27:38,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543075445] [2023-12-16 04:27:38,643 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-16 04:27:38,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086916003] [2023-12-16 04:27:38,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:27:38,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:27:38,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:27:38,659 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:27:38,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 04:27:38,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:27:38,813 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 04:27:38,819 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:27:38,842 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2023-12-16 04:27:38,843 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:27:38,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086916003] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:27:38,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:27:38,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 04:27:38,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965120365] [2023-12-16 04:27:38,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:27:38,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 04:27:38,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:27:38,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 04:27:38,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 04:27:38,886 INFO L87 Difference]: Start difference. First operand has 91 states, 72 states have (on average 1.4305555555555556) internal successors, (103), 73 states have internal predecessors, (103), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-16 04:27:38,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:27:38,942 INFO L93 Difference]: Finished difference Result 173 states and 274 transitions. [2023-12-16 04:27:38,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 04:27:38,945 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 112 [2023-12-16 04:27:38,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:27:38,951 INFO L225 Difference]: With dead ends: 173 [2023-12-16 04:27:38,951 INFO L226 Difference]: Without dead ends: 83 [2023-12-16 04:27:38,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 04:27:38,959 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:27:38,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 114 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:27:38,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-12-16 04:27:39,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2023-12-16 04:27:39,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 65 states have (on average 1.323076923076923) internal successors, (86), 65 states have internal predecessors, (86), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-16 04:27:39,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 118 transitions. [2023-12-16 04:27:39,011 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 118 transitions. Word has length 112 [2023-12-16 04:27:39,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:27:39,011 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 118 transitions. [2023-12-16 04:27:39,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-16 04:27:39,012 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 118 transitions. [2023-12-16 04:27:39,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-16 04:27:39,018 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:27:39,019 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:27:39,032 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-16 04:27:39,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-16 04:27:39,225 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:27:39,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:27:39,226 INFO L85 PathProgramCache]: Analyzing trace with hash -679294053, now seen corresponding path program 1 times [2023-12-16 04:27:39,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:27:39,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735044347] [2023-12-16 04:27:39,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:27:39,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:27:39,268 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:27:39,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [284873500] [2023-12-16 04:27:39,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:27:39,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:27:39,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:27:39,278 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:27:39,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 04:27:39,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:27:39,439 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 04:27:39,481 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:27:39,529 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 04:27:39,529 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:27:39,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:27:39,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735044347] [2023-12-16 04:27:39,529 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:27:39,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284873500] [2023-12-16 04:27:39,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284873500] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:27:39,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:27:39,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 04:27:39,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732476738] [2023-12-16 04:27:39,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:27:39,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 04:27:39,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:27:39,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 04:27:39,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 04:27:39,532 INFO L87 Difference]: Start difference. First operand 83 states and 118 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:27:39,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:27:39,580 INFO L93 Difference]: Finished difference Result 165 states and 235 transitions. [2023-12-16 04:27:39,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 04:27:39,581 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 112 [2023-12-16 04:27:39,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:27:39,583 INFO L225 Difference]: With dead ends: 165 [2023-12-16 04:27:39,583 INFO L226 Difference]: Without dead ends: 83 [2023-12-16 04:27:39,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:27:39,587 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 45 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:27:39,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 286 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:27:39,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-12-16 04:27:39,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2023-12-16 04:27:39,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 65 states have (on average 1.3076923076923077) internal successors, (85), 65 states have internal predecessors, (85), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-16 04:27:39,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 117 transitions. [2023-12-16 04:27:39,598 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 117 transitions. Word has length 112 [2023-12-16 04:27:39,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:27:39,599 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 117 transitions. [2023-12-16 04:27:39,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:27:39,599 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 117 transitions. [2023-12-16 04:27:39,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-16 04:27:39,601 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:27:39,601 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:27:39,614 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-16 04:27:39,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-16 04:27:39,828 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:27:39,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:27:39,829 INFO L85 PathProgramCache]: Analyzing trace with hash -462281763, now seen corresponding path program 1 times [2023-12-16 04:27:39,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:27:39,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668714523] [2023-12-16 04:27:39,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:27:39,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:27:39,917 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:27:39,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1869344257] [2023-12-16 04:27:39,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:27:39,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:27:39,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:27:39,921 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:27:39,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 04:27:40,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:27:40,085 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 04:27:40,107 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:27:40,154 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 04:27:40,154 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:27:40,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:27:40,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668714523] [2023-12-16 04:27:40,155 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:27:40,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869344257] [2023-12-16 04:27:40,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869344257] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:27:40,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:27:40,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 04:27:40,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672526465] [2023-12-16 04:27:40,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:27:40,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 04:27:40,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:27:40,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 04:27:40,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:27:40,158 INFO L87 Difference]: Start difference. First operand 83 states and 117 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:27:40,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:27:40,228 INFO L93 Difference]: Finished difference Result 177 states and 250 transitions. [2023-12-16 04:27:40,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 04:27:40,229 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 114 [2023-12-16 04:27:40,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:27:40,246 INFO L225 Difference]: With dead ends: 177 [2023-12-16 04:27:40,246 INFO L226 Difference]: Without dead ends: 95 [2023-12-16 04:27:40,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:27:40,249 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 65 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:27:40,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 410 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:27:40,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-12-16 04:27:40,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 86. [2023-12-16 04:27:40,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 68 states have (on average 1.2941176470588236) internal successors, (88), 68 states have internal predecessors, (88), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-16 04:27:40,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 120 transitions. [2023-12-16 04:27:40,267 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 120 transitions. Word has length 114 [2023-12-16 04:27:40,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:27:40,268 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 120 transitions. [2023-12-16 04:27:40,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:27:40,268 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 120 transitions. [2023-12-16 04:27:40,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-16 04:27:40,270 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:27:40,270 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:27:40,278 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-16 04:27:40,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:27:40,481 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:27:40,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:27:40,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1501942713, now seen corresponding path program 1 times [2023-12-16 04:27:40,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:27:40,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267863079] [2023-12-16 04:27:40,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:27:40,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:27:40,532 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:27:40,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [825385402] [2023-12-16 04:27:40,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:27:40,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:27:40,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:27:40,539 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:27:40,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-16 04:27:40,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:27:40,671 INFO L262 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-16 04:27:40,677 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:27:40,700 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:27:40,701 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 7 [2023-12-16 04:27:40,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 19 [2023-12-16 04:27:40,766 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:27:40,767 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 28 [2023-12-16 04:27:40,791 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 04:27:40,792 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:27:40,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:27:40,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267863079] [2023-12-16 04:27:40,792 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:27:40,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825385402] [2023-12-16 04:27:40,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825385402] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:27:40,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:27:40,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 04:27:40,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101574790] [2023-12-16 04:27:40,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:27:40,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 04:27:40,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:27:40,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 04:27:40,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-16 04:27:40,794 INFO L87 Difference]: Start difference. First operand 86 states and 120 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:27:41,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:27:41,097 INFO L93 Difference]: Finished difference Result 158 states and 215 transitions. [2023-12-16 04:27:41,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 04:27:41,098 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 116 [2023-12-16 04:27:41,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:27:41,099 INFO L225 Difference]: With dead ends: 158 [2023-12-16 04:27:41,099 INFO L226 Difference]: Without dead ends: 156 [2023-12-16 04:27:41,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-12-16 04:27:41,100 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 116 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 04:27:41,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 623 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 04:27:41,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2023-12-16 04:27:41,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 152. [2023-12-16 04:27:41,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 119 states have (on average 1.2605042016806722) internal successors, (150), 120 states have internal predecessors, (150), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-16 04:27:41,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 210 transitions. [2023-12-16 04:27:41,108 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 210 transitions. Word has length 116 [2023-12-16 04:27:41,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:27:41,108 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 210 transitions. [2023-12-16 04:27:41,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:27:41,108 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 210 transitions. [2023-12-16 04:27:41,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-16 04:27:41,110 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:27:41,110 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:27:41,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-16 04:27:41,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:27:41,315 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:27:41,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:27:41,316 INFO L85 PathProgramCache]: Analyzing trace with hash 656669104, now seen corresponding path program 1 times [2023-12-16 04:27:41,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:27:41,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282403212] [2023-12-16 04:27:41,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:27:41,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:27:41,338 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:27:41,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1213424844] [2023-12-16 04:27:41,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:27:41,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:27:41,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:27:41,366 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:27:41,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-16 04:27:41,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:27:41,507 INFO L262 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 63 conjunts are in the unsatisfiable core [2023-12-16 04:27:41,511 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:27:41,515 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:27:41,515 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 7 [2023-12-16 04:27:41,591 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-12-16 04:27:41,619 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-12-16 04:27:41,674 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-12-16 04:27:41,698 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-12-16 04:27:41,896 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:27:41,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 38 [2023-12-16 04:27:42,055 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:27:42,055 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 70 treesize of output 34 [2023-12-16 04:27:42,100 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 312 proven. 36 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-12-16 04:27:42,100 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:27:42,740 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 114 proven. 48 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2023-12-16 04:27:42,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:27:42,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282403212] [2023-12-16 04:27:42,740 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:27:42,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213424844] [2023-12-16 04:27:42,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213424844] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:27:42,740 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:27:42,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 43 [2023-12-16 04:27:42,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915477645] [2023-12-16 04:27:42,741 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:27:42,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-12-16 04:27:42,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:27:42,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-12-16 04:27:42,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=332, Invalid=1474, Unknown=0, NotChecked=0, Total=1806 [2023-12-16 04:27:42,743 INFO L87 Difference]: Start difference. First operand 152 states and 210 transitions. Second operand has 43 states, 35 states have (on average 2.5714285714285716) internal successors, (90), 40 states have internal predecessors, (90), 10 states have call successors, (26), 4 states have call predecessors, (26), 10 states have return successors, (26), 7 states have call predecessors, (26), 10 states have call successors, (26) [2023-12-16 04:27:44,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:27:44,931 INFO L93 Difference]: Finished difference Result 279 states and 349 transitions. [2023-12-16 04:27:44,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-12-16 04:27:44,932 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 35 states have (on average 2.5714285714285716) internal successors, (90), 40 states have internal predecessors, (90), 10 states have call successors, (26), 4 states have call predecessors, (26), 10 states have return successors, (26), 7 states have call predecessors, (26), 10 states have call successors, (26) Word has length 117 [2023-12-16 04:27:44,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:27:44,934 INFO L225 Difference]: With dead ends: 279 [2023-12-16 04:27:44,935 INFO L226 Difference]: Without dead ends: 277 [2023-12-16 04:27:44,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 192 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1855 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1358, Invalid=5782, Unknown=0, NotChecked=0, Total=7140 [2023-12-16 04:27:44,937 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 884 mSDsluCounter, 855 mSDsCounter, 0 mSdLazyCounter, 2540 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 900 SdHoareTripleChecker+Valid, 938 SdHoareTripleChecker+Invalid, 2767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 2540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-16 04:27:44,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [900 Valid, 938 Invalid, 2767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 2540 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-16 04:27:44,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2023-12-16 04:27:44,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 180. [2023-12-16 04:27:44,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 140 states have (on average 1.2214285714285715) internal successors, (171), 141 states have internal predecessors, (171), 30 states have call successors, (30), 9 states have call predecessors, (30), 9 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-16 04:27:44,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 231 transitions. [2023-12-16 04:27:44,949 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 231 transitions. Word has length 117 [2023-12-16 04:27:44,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:27:44,949 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 231 transitions. [2023-12-16 04:27:44,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 35 states have (on average 2.5714285714285716) internal successors, (90), 40 states have internal predecessors, (90), 10 states have call successors, (26), 4 states have call predecessors, (26), 10 states have return successors, (26), 7 states have call predecessors, (26), 10 states have call successors, (26) [2023-12-16 04:27:44,949 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 231 transitions. [2023-12-16 04:27:44,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-16 04:27:44,950 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:27:44,950 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:27:44,956 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-16 04:27:45,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:27:45,159 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:27:45,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:27:45,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1083558308, now seen corresponding path program 1 times [2023-12-16 04:27:45,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:27:45,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259285157] [2023-12-16 04:27:45,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:27:45,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:27:45,179 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:27:45,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [14298804] [2023-12-16 04:27:45,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:27:45,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:27:45,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:27:45,180 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:27:45,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-16 04:27:45,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:27:45,310 INFO L262 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 67 conjunts are in the unsatisfiable core [2023-12-16 04:27:45,315 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:27:45,324 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:27:45,324 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 7 [2023-12-16 04:27:45,398 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-12-16 04:27:45,461 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-12-16 04:27:45,484 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-12-16 04:27:45,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-12-16 04:27:45,686 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:27:45,686 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 38 [2023-12-16 04:27:45,860 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 312 proven. 36 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-12-16 04:27:45,860 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:27:46,469 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 114 proven. 48 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2023-12-16 04:27:46,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:27:46,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259285157] [2023-12-16 04:27:46,470 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:27:46,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14298804] [2023-12-16 04:27:46,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14298804] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:27:46,470 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:27:46,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 45 [2023-12-16 04:27:46,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101580714] [2023-12-16 04:27:46,470 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:27:46,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-12-16 04:27:46,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:27:46,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-12-16 04:27:46,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=337, Invalid=1643, Unknown=0, NotChecked=0, Total=1980 [2023-12-16 04:27:46,473 INFO L87 Difference]: Start difference. First operand 180 states and 231 transitions. Second operand has 45 states, 37 states have (on average 2.4864864864864864) internal successors, (92), 42 states have internal predecessors, (92), 10 states have call successors, (26), 4 states have call predecessors, (26), 10 states have return successors, (26), 7 states have call predecessors, (26), 10 states have call successors, (26) [2023-12-16 04:27:48,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:27:48,306 INFO L93 Difference]: Finished difference Result 257 states and 323 transitions. [2023-12-16 04:27:48,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-12-16 04:27:48,306 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 37 states have (on average 2.4864864864864864) internal successors, (92), 42 states have internal predecessors, (92), 10 states have call successors, (26), 4 states have call predecessors, (26), 10 states have return successors, (26), 7 states have call predecessors, (26), 10 states have call successors, (26) Word has length 118 [2023-12-16 04:27:48,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:27:48,308 INFO L225 Difference]: With dead ends: 257 [2023-12-16 04:27:48,308 INFO L226 Difference]: Without dead ends: 255 [2023-12-16 04:27:48,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 191 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1420 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1218, Invalid=4788, Unknown=0, NotChecked=0, Total=6006 [2023-12-16 04:27:48,310 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 1477 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 1788 mSolverCounterSat, 277 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1493 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 2065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 277 IncrementalHoareTripleChecker+Valid, 1788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:27:48,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1493 Valid, 599 Invalid, 2065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [277 Valid, 1788 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-16 04:27:48,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2023-12-16 04:27:48,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 181. [2023-12-16 04:27:48,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 141 states have (on average 1.2198581560283688) internal successors, (172), 142 states have internal predecessors, (172), 30 states have call successors, (30), 9 states have call predecessors, (30), 9 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-16 04:27:48,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 232 transitions. [2023-12-16 04:27:48,323 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 232 transitions. Word has length 118 [2023-12-16 04:27:48,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:27:48,324 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 232 transitions. [2023-12-16 04:27:48,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 37 states have (on average 2.4864864864864864) internal successors, (92), 42 states have internal predecessors, (92), 10 states have call successors, (26), 4 states have call predecessors, (26), 10 states have return successors, (26), 7 states have call predecessors, (26), 10 states have call successors, (26) [2023-12-16 04:27:48,324 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 232 transitions. [2023-12-16 04:27:48,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-16 04:27:48,326 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:27:48,326 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:27:48,341 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-16 04:27:48,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:27:48,533 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:27:48,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:27:48,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1707641387, now seen corresponding path program 1 times [2023-12-16 04:27:48,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:27:48,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172178503] [2023-12-16 04:27:48,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:27:48,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:27:48,550 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:27:48,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [588065700] [2023-12-16 04:27:48,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:27:48,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:27:48,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:27:48,558 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:27:48,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-16 04:27:48,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:27:48,703 INFO L262 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-16 04:27:48,706 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:27:48,712 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:27:48,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 10 [2023-12-16 04:27:48,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-12-16 04:27:48,757 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-12-16 04:27:48,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-12-16 04:27:48,797 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-12-16 04:27:48,813 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-12-16 04:27:48,837 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 23 [2023-12-16 04:27:48,845 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 225 proven. 30 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2023-12-16 04:27:48,845 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:27:48,982 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-12-16 04:27:48,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:27:48,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172178503] [2023-12-16 04:27:48,983 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:27:48,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588065700] [2023-12-16 04:27:48,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588065700] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:27:48,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:27:48,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2023-12-16 04:27:48,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783352279] [2023-12-16 04:27:48,983 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:27:48,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 04:27:48,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:27:48,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 04:27:48,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-12-16 04:27:48,984 INFO L87 Difference]: Start difference. First operand 181 states and 232 transitions. Second operand has 10 states, 8 states have (on average 6.5) internal successors, (52), 10 states have internal predecessors, (52), 4 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (27), 2 states have call predecessors, (27), 4 states have call successors, (27) [2023-12-16 04:27:49,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:27:49,253 INFO L93 Difference]: Finished difference Result 377 states and 477 transitions. [2023-12-16 04:27:49,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 04:27:49,257 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 6.5) internal successors, (52), 10 states have internal predecessors, (52), 4 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (27), 2 states have call predecessors, (27), 4 states have call successors, (27) Word has length 119 [2023-12-16 04:27:49,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:27:49,258 INFO L225 Difference]: With dead ends: 377 [2023-12-16 04:27:49,258 INFO L226 Difference]: Without dead ends: 197 [2023-12-16 04:27:49,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 222 SyntacticMatches, 6 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2023-12-16 04:27:49,259 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 187 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 04:27:49,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 166 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 04:27:49,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2023-12-16 04:27:49,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 189. [2023-12-16 04:27:49,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 147 states have (on average 1.2040816326530612) internal successors, (177), 148 states have internal predecessors, (177), 30 states have call successors, (30), 11 states have call predecessors, (30), 11 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-16 04:27:49,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 237 transitions. [2023-12-16 04:27:49,272 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 237 transitions. Word has length 119 [2023-12-16 04:27:49,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:27:49,272 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 237 transitions. [2023-12-16 04:27:49,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 6.5) internal successors, (52), 10 states have internal predecessors, (52), 4 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (27), 2 states have call predecessors, (27), 4 states have call successors, (27) [2023-12-16 04:27:49,272 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 237 transitions. [2023-12-16 04:27:49,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-16 04:27:49,274 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:27:49,274 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:27:49,282 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-16 04:27:49,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:27:49,480 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:27:49,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:27:49,481 INFO L85 PathProgramCache]: Analyzing trace with hash -939628005, now seen corresponding path program 1 times [2023-12-16 04:27:49,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:27:49,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969943277] [2023-12-16 04:27:49,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:27:49,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:27:49,497 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:27:49,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [190178346] [2023-12-16 04:27:49,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:27:49,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:27:49,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:27:49,521 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:27:49,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-16 04:27:49,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:27:49,633 INFO L262 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-16 04:27:49,635 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:27:49,664 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:27:49,664 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 14 [2023-12-16 04:27:49,669 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 04:27:49,669 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:27:49,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:27:49,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969943277] [2023-12-16 04:27:49,669 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:27:49,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190178346] [2023-12-16 04:27:49,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190178346] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:27:49,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:27:49,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 04:27:49,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397402066] [2023-12-16 04:27:49,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:27:49,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 04:27:49,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:27:49,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 04:27:49,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:27:49,671 INFO L87 Difference]: Start difference. First operand 189 states and 237 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:27:49,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:27:49,938 INFO L93 Difference]: Finished difference Result 586 states and 737 transitions. [2023-12-16 04:27:49,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 04:27:49,938 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 119 [2023-12-16 04:27:49,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:27:49,940 INFO L225 Difference]: With dead ends: 586 [2023-12-16 04:27:49,940 INFO L226 Difference]: Without dead ends: 398 [2023-12-16 04:27:49,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 04:27:49,941 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 180 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 04:27:49,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 324 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 04:27:49,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2023-12-16 04:27:49,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 313. [2023-12-16 04:27:49,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 241 states have (on average 1.1908713692946058) internal successors, (287), 244 states have internal predecessors, (287), 50 states have call successors, (50), 21 states have call predecessors, (50), 21 states have return successors, (50), 47 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-16 04:27:49,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 387 transitions. [2023-12-16 04:27:49,958 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 387 transitions. Word has length 119 [2023-12-16 04:27:49,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:27:49,958 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 387 transitions. [2023-12-16 04:27:49,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:27:49,958 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 387 transitions. [2023-12-16 04:27:49,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-16 04:27:49,959 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:27:49,959 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:27:49,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-16 04:27:50,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-16 04:27:50,165 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:27:50,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:27:50,165 INFO L85 PathProgramCache]: Analyzing trace with hash -259569635, now seen corresponding path program 1 times [2023-12-16 04:27:50,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:27:50,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554587134] [2023-12-16 04:27:50,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:27:50,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:27:50,197 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:27:50,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [355387305] [2023-12-16 04:27:50,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:27:50,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:27:50,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:27:50,202 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:27:50,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-16 04:27:50,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:27:50,336 INFO L262 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-16 04:27:50,340 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:27:50,359 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:27:50,360 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 22 [2023-12-16 04:27:50,369 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:27:50,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 10 [2023-12-16 04:27:50,373 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 04:27:50,373 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:27:50,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:27:50,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554587134] [2023-12-16 04:27:50,373 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:27:50,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355387305] [2023-12-16 04:27:50,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355387305] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:27:50,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:27:50,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 04:27:50,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296694055] [2023-12-16 04:27:50,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:27:50,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 04:27:50,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:27:50,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 04:27:50,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:27:50,377 INFO L87 Difference]: Start difference. First operand 313 states and 387 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:27:50,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:27:50,508 INFO L93 Difference]: Finished difference Result 703 states and 873 transitions. [2023-12-16 04:27:50,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 04:27:50,508 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 119 [2023-12-16 04:27:50,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:27:50,512 INFO L225 Difference]: With dead ends: 703 [2023-12-16 04:27:50,512 INFO L226 Difference]: Without dead ends: 391 [2023-12-16 04:27:50,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 04:27:50,515 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 59 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:27:50,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 305 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:27:50,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2023-12-16 04:27:50,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 334. [2023-12-16 04:27:50,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 262 states have (on average 1.1870229007633588) internal successors, (311), 265 states have internal predecessors, (311), 50 states have call successors, (50), 21 states have call predecessors, (50), 21 states have return successors, (50), 47 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-16 04:27:50,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 411 transitions. [2023-12-16 04:27:50,548 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 411 transitions. Word has length 119 [2023-12-16 04:27:50,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:27:50,549 INFO L495 AbstractCegarLoop]: Abstraction has 334 states and 411 transitions. [2023-12-16 04:27:50,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:27:50,549 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 411 transitions. [2023-12-16 04:27:50,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-16 04:27:50,550 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:27:50,550 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:27:50,558 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-16 04:27:50,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:27:50,756 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:27:50,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:27:50,757 INFO L85 PathProgramCache]: Analyzing trace with hash -919254103, now seen corresponding path program 1 times [2023-12-16 04:27:50,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:27:50,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528815090] [2023-12-16 04:27:50,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:27:50,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:27:50,778 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:27:50,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1550720943] [2023-12-16 04:27:50,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:27:50,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:27:50,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:27:50,779 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:27:50,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-16 04:27:50,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:27:50,913 INFO L262 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-16 04:27:50,917 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:27:50,920 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:27:50,920 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 10 [2023-12-16 04:27:50,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-12-16 04:27:50,957 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-12-16 04:27:50,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-12-16 04:27:50,992 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-12-16 04:27:51,009 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-12-16 04:27:51,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-12-16 04:27:51,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 23 [2023-12-16 04:27:51,070 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 225 proven. 30 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2023-12-16 04:27:51,071 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:27:51,230 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-12-16 04:27:51,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:27:51,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528815090] [2023-12-16 04:27:51,230 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:27:51,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550720943] [2023-12-16 04:27:51,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550720943] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:27:51,230 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:27:51,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2023-12-16 04:27:51,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065129176] [2023-12-16 04:27:51,231 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:27:51,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 04:27:51,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:27:51,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 04:27:51,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-12-16 04:27:51,232 INFO L87 Difference]: Start difference. First operand 334 states and 411 transitions. Second operand has 10 states, 8 states have (on average 6.625) internal successors, (53), 10 states have internal predecessors, (53), 4 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (27), 2 states have call predecessors, (27), 4 states have call successors, (27) [2023-12-16 04:27:51,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:27:51,497 INFO L93 Difference]: Finished difference Result 679 states and 833 transitions. [2023-12-16 04:27:51,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 04:27:51,497 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 6.625) internal successors, (53), 10 states have internal predecessors, (53), 4 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (27), 2 states have call predecessors, (27), 4 states have call successors, (27) Word has length 120 [2023-12-16 04:27:51,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:27:51,499 INFO L225 Difference]: With dead ends: 679 [2023-12-16 04:27:51,499 INFO L226 Difference]: Without dead ends: 346 [2023-12-16 04:27:51,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 223 SyntacticMatches, 7 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2023-12-16 04:27:51,500 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 201 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 04:27:51,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 160 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 04:27:51,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2023-12-16 04:27:51,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 334. [2023-12-16 04:27:51,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 262 states have (on average 1.1717557251908397) internal successors, (307), 265 states have internal predecessors, (307), 50 states have call successors, (50), 21 states have call predecessors, (50), 21 states have return successors, (50), 47 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-16 04:27:51,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 407 transitions. [2023-12-16 04:27:51,516 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 407 transitions. Word has length 120 [2023-12-16 04:27:51,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:27:51,535 INFO L495 AbstractCegarLoop]: Abstraction has 334 states and 407 transitions. [2023-12-16 04:27:51,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 6.625) internal successors, (53), 10 states have internal predecessors, (53), 4 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (27), 2 states have call predecessors, (27), 4 states have call successors, (27) [2023-12-16 04:27:51,536 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 407 transitions. [2023-12-16 04:27:51,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-16 04:27:51,536 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:27:51,536 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:27:51,542 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-16 04:27:51,742 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 [2023-12-16 04:27:51,742 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:27:51,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:27:51,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1252203653, now seen corresponding path program 1 times [2023-12-16 04:27:51,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:27:51,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055204586] [2023-12-16 04:27:51,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:27:51,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:27:51,757 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:27:51,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1664217185] [2023-12-16 04:27:51,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:27:51,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:27:51,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:27:51,769 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) [2023-12-16 04:27:51,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-16 04:27:52,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:27:52,005 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 74 conjunts are in the unsatisfiable core [2023-12-16 04:27:52,009 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:27:52,078 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:27:52,079 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 103 treesize of output 102 [2023-12-16 04:27:52,339 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:27:52,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 92 treesize of output 88 [2023-12-16 04:27:52,492 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:27:52,492 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 83 treesize of output 76 [2023-12-16 04:27:52,616 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:27:52,617 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 74 treesize of output 64 [2023-12-16 04:27:52,721 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:27:52,722 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 65 treesize of output 52 [2023-12-16 04:27:52,804 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:27:52,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 56 treesize of output 40 [2023-12-16 04:27:52,866 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:27:52,866 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 28 [2023-12-16 04:27:52,912 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 16 [2023-12-16 04:27:53,162 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:27:53,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 65 treesize of output 67 [2023-12-16 04:27:53,230 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:27:53,230 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 88 treesize of output 34 [2023-12-16 04:27:53,252 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 1 proven. 451 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-16 04:27:53,253 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:27:53,452 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 04:27:53,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:27:53,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055204586] [2023-12-16 04:27:53,452 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:27:53,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664217185] [2023-12-16 04:27:53,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664217185] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 04:27:53,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 04:27:53,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [19] total 23 [2023-12-16 04:27:53,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804873599] [2023-12-16 04:27:53,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:27:53,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 04:27:53,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:27:53,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 04:27:53,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=396, Unknown=0, NotChecked=0, Total=506 [2023-12-16 04:27:53,454 INFO L87 Difference]: Start difference. First operand 334 states and 407 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:27:54,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:27:54,211 INFO L93 Difference]: Finished difference Result 871 states and 1047 transitions. [2023-12-16 04:27:54,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 04:27:54,211 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 121 [2023-12-16 04:27:54,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:27:54,213 INFO L225 Difference]: With dead ends: 871 [2023-12-16 04:27:54,213 INFO L226 Difference]: Without dead ends: 538 [2023-12-16 04:27:54,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2023-12-16 04:27:54,216 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 68 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 04:27:54,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 392 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 04:27:54,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2023-12-16 04:27:54,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 310. [2023-12-16 04:27:54,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 252 states have (on average 1.1785714285714286) internal successors, (297), 254 states have internal predecessors, (297), 40 states have call successors, (40), 17 states have call predecessors, (40), 17 states have return successors, (40), 38 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-16 04:27:54,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 377 transitions. [2023-12-16 04:27:54,249 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 377 transitions. Word has length 121 [2023-12-16 04:27:54,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:27:54,250 INFO L495 AbstractCegarLoop]: Abstraction has 310 states and 377 transitions. [2023-12-16 04:27:54,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:27:54,250 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 377 transitions. [2023-12-16 04:27:54,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-16 04:27:54,251 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:27:54,251 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:27:54,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-16 04:27:54,458 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 [2023-12-16 04:27:54,458 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:27:54,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:27:54,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1150741393, now seen corresponding path program 1 times [2023-12-16 04:27:54,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:27:54,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400616524] [2023-12-16 04:27:54,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:27:54,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:27:54,474 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:27:54,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [99158362] [2023-12-16 04:27:54,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:27:54,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:27:54,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:27:54,505 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) [2023-12-16 04:27:54,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-16 04:27:54,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:27:54,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 47 conjunts are in the unsatisfiable core [2023-12-16 04:27:54,713 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:27:54,721 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:27:54,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 64 treesize of output 22 [2023-12-16 04:27:54,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-16 04:27:54,756 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-16 04:27:54,785 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:27:54,786 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 43 [2023-12-16 04:27:55,185 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:27:55,186 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 70 treesize of output 28 [2023-12-16 04:27:55,196 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 04:27:55,197 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:27:55,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:27:55,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400616524] [2023-12-16 04:27:55,197 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:27:55,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99158362] [2023-12-16 04:27:55,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [99158362] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:27:55,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:27:55,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 04:27:55,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117852809] [2023-12-16 04:27:55,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:27:55,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 04:27:55,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:27:55,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 04:27:55,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:27:55,198 INFO L87 Difference]: Start difference. First operand 310 states and 377 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:27:56,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:27:56,134 INFO L93 Difference]: Finished difference Result 705 states and 846 transitions. [2023-12-16 04:27:56,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 04:27:56,134 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 122 [2023-12-16 04:27:56,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:27:56,136 INFO L225 Difference]: With dead ends: 705 [2023-12-16 04:27:56,136 INFO L226 Difference]: Without dead ends: 396 [2023-12-16 04:27:56,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 04:27:56,137 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 52 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 04:27:56,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 273 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 04:27:56,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2023-12-16 04:27:56,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 252. [2023-12-16 04:27:56,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 208 states have (on average 1.1826923076923077) internal successors, (246), 209 states have internal predecessors, (246), 30 states have call successors, (30), 13 states have call predecessors, (30), 13 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-16 04:27:56,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 306 transitions. [2023-12-16 04:27:56,157 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 306 transitions. Word has length 122 [2023-12-16 04:27:56,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:27:56,157 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 306 transitions. [2023-12-16 04:27:56,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:27:56,157 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 306 transitions. [2023-12-16 04:27:56,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-16 04:27:56,158 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:27:56,159 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:27:56,165 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-16 04:27:56,366 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 [2023-12-16 04:27:56,366 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:27:56,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:27:56,366 INFO L85 PathProgramCache]: Analyzing trace with hash 48754918, now seen corresponding path program 1 times [2023-12-16 04:27:56,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:27:56,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750650524] [2023-12-16 04:27:56,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:27:56,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:27:56,391 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:27:56,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [8957330] [2023-12-16 04:27:56,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:27:56,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:27:56,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:27:56,402 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) [2023-12-16 04:27:56,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-16 04:27:56,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:27:56,738 INFO L262 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 53 conjunts are in the unsatisfiable core [2023-12-16 04:27:56,743 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:27:56,762 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:27:56,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 56 treesize of output 49 [2023-12-16 04:27:56,835 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:27:56,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 56 treesize of output 49 [2023-12-16 04:27:56,904 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:27:56,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 56 treesize of output 49 [2023-12-16 04:27:56,973 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:27:56,973 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 56 treesize of output 40 [2023-12-16 04:27:57,031 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:27:57,032 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 37 [2023-12-16 04:27:57,090 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:27:57,090 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 28 [2023-12-16 04:27:57,130 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:27:57,130 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 25 [2023-12-16 04:27:57,166 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:27:57,166 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 16 [2023-12-16 04:27:57,211 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 368 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-16 04:27:57,211 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:27:57,623 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 04:27:57,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:27:57,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750650524] [2023-12-16 04:27:57,624 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:27:57,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8957330] [2023-12-16 04:27:57,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [8957330] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 04:27:57,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 04:27:57,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2023-12-16 04:27:57,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334803032] [2023-12-16 04:27:57,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:27:57,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 04:27:57,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:27:57,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 04:27:57,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-12-16 04:27:57,626 INFO L87 Difference]: Start difference. First operand 252 states and 306 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:28:00,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:28:00,915 INFO L93 Difference]: Finished difference Result 556 states and 669 transitions. [2023-12-16 04:28:00,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 04:28:00,915 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 123 [2023-12-16 04:28:00,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:28:00,916 INFO L225 Difference]: With dead ends: 556 [2023-12-16 04:28:00,916 INFO L226 Difference]: Without dead ends: 305 [2023-12-16 04:28:00,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-12-16 04:28:00,917 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 72 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-16 04:28:00,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 461 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-16 04:28:00,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2023-12-16 04:28:00,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 300. [2023-12-16 04:28:00,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 238 states have (on average 1.1554621848739495) internal successors, (275), 240 states have internal predecessors, (275), 42 states have call successors, (42), 19 states have call predecessors, (42), 19 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-16 04:28:00,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 359 transitions. [2023-12-16 04:28:00,935 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 359 transitions. Word has length 123 [2023-12-16 04:28:00,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:28:00,936 INFO L495 AbstractCegarLoop]: Abstraction has 300 states and 359 transitions. [2023-12-16 04:28:00,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:28:00,936 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 359 transitions. [2023-12-16 04:28:00,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-16 04:28:00,936 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:28:00,937 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:28:00,947 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-16 04:28:01,144 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 [2023-12-16 04:28:01,144 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:28:01,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:28:01,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1422219994, now seen corresponding path program 1 times [2023-12-16 04:28:01,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:28:01,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161828115] [2023-12-16 04:28:01,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:28:01,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:28:01,159 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:28:01,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [815332083] [2023-12-16 04:28:01,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:28:01,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:28:01,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:28:01,175 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) [2023-12-16 04:28:01,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-16 04:28:01,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:28:01,471 INFO L262 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-16 04:28:01,478 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:28:01,485 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:28:01,485 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 10 [2023-12-16 04:28:01,523 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:28:01,524 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 52 [2023-12-16 04:28:01,636 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:28:01,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 85 treesize of output 31 [2023-12-16 04:28:01,918 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 04:28:01,918 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:28:01,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:28:01,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161828115] [2023-12-16 04:28:01,918 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:28:01,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815332083] [2023-12-16 04:28:01,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815332083] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:28:01,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:28:01,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 04:28:01,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679069928] [2023-12-16 04:28:01,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:28:01,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 04:28:01,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:28:01,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 04:28:01,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 04:28:01,920 INFO L87 Difference]: Start difference. First operand 300 states and 359 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:28:03,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:28:03,798 INFO L93 Difference]: Finished difference Result 578 states and 692 transitions. [2023-12-16 04:28:03,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 04:28:03,799 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 123 [2023-12-16 04:28:03,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:28:03,800 INFO L225 Difference]: With dead ends: 578 [2023-12-16 04:28:03,800 INFO L226 Difference]: Without dead ends: 323 [2023-12-16 04:28:03,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-16 04:28:03,801 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 51 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-16 04:28:03,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 394 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-16 04:28:03,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2023-12-16 04:28:03,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 294. [2023-12-16 04:28:03,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 232 states have (on average 1.1508620689655173) internal successors, (267), 234 states have internal predecessors, (267), 42 states have call successors, (42), 19 states have call predecessors, (42), 19 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-16 04:28:03,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 351 transitions. [2023-12-16 04:28:03,819 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 351 transitions. Word has length 123 [2023-12-16 04:28:03,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:28:03,820 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 351 transitions. [2023-12-16 04:28:03,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:28:03,820 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 351 transitions. [2023-12-16 04:28:03,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-16 04:28:03,820 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:28:03,820 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:28:03,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-16 04:28:04,028 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 [2023-12-16 04:28:04,029 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:28:04,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:28:04,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1404100338, now seen corresponding path program 1 times [2023-12-16 04:28:04,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:28:04,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603088876] [2023-12-16 04:28:04,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:28:04,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:28:04,054 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:28:04,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1542394698] [2023-12-16 04:28:04,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:28:04,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:28:04,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:28:04,056 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) [2023-12-16 04:28:04,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-16 04:28:04,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:28:04,197 INFO L262 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-16 04:28:04,201 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:28:04,221 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:28:04,221 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 28 [2023-12-16 04:28:04,228 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:28:04,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 28 [2023-12-16 04:28:04,254 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:28:04,254 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 16 [2023-12-16 04:28:04,261 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 04:28:04,261 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:28:04,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:28:04,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603088876] [2023-12-16 04:28:04,261 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:28:04,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542394698] [2023-12-16 04:28:04,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1542394698] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:28:04,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:28:04,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 04:28:04,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894725851] [2023-12-16 04:28:04,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:28:04,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 04:28:04,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:28:04,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 04:28:04,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:28:04,264 INFO L87 Difference]: Start difference. First operand 294 states and 351 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:28:04,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:28:04,665 INFO L93 Difference]: Finished difference Result 773 states and 924 transitions. [2023-12-16 04:28:04,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 04:28:04,666 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2023-12-16 04:28:04,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:28:04,667 INFO L225 Difference]: With dead ends: 773 [2023-12-16 04:28:04,668 INFO L226 Difference]: Without dead ends: 524 [2023-12-16 04:28:04,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:28:04,670 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 138 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 04:28:04,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 426 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 04:28:04,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2023-12-16 04:28:04,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 331. [2023-12-16 04:28:04,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 269 states have (on average 1.1635687732342008) internal successors, (313), 271 states have internal predecessors, (313), 42 states have call successors, (42), 19 states have call predecessors, (42), 19 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-16 04:28:04,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 397 transitions. [2023-12-16 04:28:04,692 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 397 transitions. Word has length 124 [2023-12-16 04:28:04,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:28:04,693 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 397 transitions. [2023-12-16 04:28:04,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:28:04,693 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 397 transitions. [2023-12-16 04:28:04,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-16 04:28:04,694 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:28:04,694 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:28:04,717 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-16 04:28:04,901 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 [2023-12-16 04:28:04,901 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:28:04,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:28:04,902 INFO L85 PathProgramCache]: Analyzing trace with hash 22977390, now seen corresponding path program 1 times [2023-12-16 04:28:04,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:28:04,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142309197] [2023-12-16 04:28:04,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:28:04,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:28:04,929 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:28:04,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1855379278] [2023-12-16 04:28:04,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:28:04,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:28:04,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:28:04,949 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) [2023-12-16 04:28:04,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-16 04:28:05,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:28:05,160 INFO L262 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-16 04:28:05,162 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:28:05,188 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:28:05,188 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-12-16 04:28:05,194 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:28:05,195 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-12-16 04:28:05,218 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:28:05,219 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 16 [2023-12-16 04:28:05,228 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 04:28:05,228 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:28:05,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:28:05,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142309197] [2023-12-16 04:28:05,229 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:28:05,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855379278] [2023-12-16 04:28:05,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855379278] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:28:05,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:28:05,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 04:28:05,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961388028] [2023-12-16 04:28:05,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:28:05,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 04:28:05,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:28:05,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 04:28:05,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:28:05,231 INFO L87 Difference]: Start difference. First operand 331 states and 397 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:28:05,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:28:05,969 INFO L93 Difference]: Finished difference Result 811 states and 966 transitions. [2023-12-16 04:28:05,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 04:28:05,970 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2023-12-16 04:28:05,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:28:05,974 INFO L225 Difference]: With dead ends: 811 [2023-12-16 04:28:05,974 INFO L226 Difference]: Without dead ends: 525 [2023-12-16 04:28:05,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-16 04:28:05,975 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 127 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 04:28:05,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 474 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 04:28:05,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2023-12-16 04:28:05,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 366. [2023-12-16 04:28:05,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 304 states have (on average 1.1644736842105263) internal successors, (354), 306 states have internal predecessors, (354), 42 states have call successors, (42), 19 states have call predecessors, (42), 19 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-16 04:28:06,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 438 transitions. [2023-12-16 04:28:06,001 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 438 transitions. Word has length 124 [2023-12-16 04:28:06,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:28:06,001 INFO L495 AbstractCegarLoop]: Abstraction has 366 states and 438 transitions. [2023-12-16 04:28:06,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:28:06,002 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 438 transitions. [2023-12-16 04:28:06,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-16 04:28:06,003 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:28:06,003 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:28:06,022 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-16 04:28:06,210 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 [2023-12-16 04:28:06,211 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:28:06,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:28:06,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1967525989, now seen corresponding path program 1 times [2023-12-16 04:28:06,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:28:06,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157450999] [2023-12-16 04:28:06,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:28:06,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:28:06,228 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:28:06,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1153733563] [2023-12-16 04:28:06,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:28:06,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:28:06,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:28:06,253 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) [2023-12-16 04:28:06,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-16 04:28:06,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:28:06,472 INFO L262 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 50 conjunts are in the unsatisfiable core [2023-12-16 04:28:06,475 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:28:06,478 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:28:06,478 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 13 [2023-12-16 04:28:06,499 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:28:06,499 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 34 [2023-12-16 04:28:06,511 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:28:06,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 37 [2023-12-16 04:28:06,583 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:28:06,584 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 21 [2023-12-16 04:28:06,646 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 04:28:06,647 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:28:06,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:28:06,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157450999] [2023-12-16 04:28:06,647 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:28:06,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153733563] [2023-12-16 04:28:06,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1153733563] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:28:06,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:28:06,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-12-16 04:28:06,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770948027] [2023-12-16 04:28:06,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:28:06,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-16 04:28:06,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:28:06,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-16 04:28:06,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2023-12-16 04:28:06,648 INFO L87 Difference]: Start difference. First operand 366 states and 438 transitions. Second operand has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:28:07,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:28:07,915 INFO L93 Difference]: Finished difference Result 976 states and 1163 transitions. [2023-12-16 04:28:07,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-16 04:28:07,915 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2023-12-16 04:28:07,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:28:07,917 INFO L225 Difference]: With dead ends: 976 [2023-12-16 04:28:07,917 INFO L226 Difference]: Without dead ends: 655 [2023-12-16 04:28:07,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=202, Invalid=728, Unknown=0, NotChecked=0, Total=930 [2023-12-16 04:28:07,918 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 334 mSDsluCounter, 1028 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 1161 SdHoareTripleChecker+Invalid, 1011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-16 04:28:07,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 1161 Invalid, 1011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1000 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-16 04:28:07,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2023-12-16 04:28:07,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 450. [2023-12-16 04:28:07,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 388 states have (on average 1.190721649484536) internal successors, (462), 390 states have internal predecessors, (462), 42 states have call successors, (42), 19 states have call predecessors, (42), 19 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-16 04:28:07,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 546 transitions. [2023-12-16 04:28:07,942 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 546 transitions. Word has length 124 [2023-12-16 04:28:07,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:28:07,942 INFO L495 AbstractCegarLoop]: Abstraction has 450 states and 546 transitions. [2023-12-16 04:28:07,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:28:07,942 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 546 transitions. [2023-12-16 04:28:07,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-16 04:28:07,943 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:28:07,943 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:28:07,964 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-16 04:28:08,150 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 [2023-12-16 04:28:08,150 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:28:08,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:28:08,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1647382937, now seen corresponding path program 1 times [2023-12-16 04:28:08,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:28:08,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929399581] [2023-12-16 04:28:08,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:28:08,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:28:08,165 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:28:08,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [137391622] [2023-12-16 04:28:08,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:28:08,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:28:08,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:28:08,167 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) [2023-12-16 04:28:08,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-16 04:28:08,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:28:08,368 INFO L262 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-16 04:28:08,370 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:28:08,386 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:28:08,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 16 [2023-12-16 04:28:08,391 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 04:28:08,391 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:28:08,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:28:08,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929399581] [2023-12-16 04:28:08,392 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:28:08,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137391622] [2023-12-16 04:28:08,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137391622] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:28:08,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:28:08,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 04:28:08,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254507141] [2023-12-16 04:28:08,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:28:08,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 04:28:08,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:28:08,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 04:28:08,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:28:08,393 INFO L87 Difference]: Start difference. First operand 450 states and 546 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:28:08,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:28:08,942 INFO L93 Difference]: Finished difference Result 1082 states and 1297 transitions. [2023-12-16 04:28:08,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 04:28:08,943 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2023-12-16 04:28:08,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:28:08,945 INFO L225 Difference]: With dead ends: 1082 [2023-12-16 04:28:08,945 INFO L226 Difference]: Without dead ends: 677 [2023-12-16 04:28:08,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 04:28:08,946 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 173 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 04:28:08,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 404 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 04:28:08,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2023-12-16 04:28:08,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 456. [2023-12-16 04:28:08,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 394 states have (on average 1.1878172588832487) internal successors, (468), 396 states have internal predecessors, (468), 42 states have call successors, (42), 19 states have call predecessors, (42), 19 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-16 04:28:08,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 552 transitions. [2023-12-16 04:28:08,971 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 552 transitions. Word has length 124 [2023-12-16 04:28:08,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:28:08,972 INFO L495 AbstractCegarLoop]: Abstraction has 456 states and 552 transitions. [2023-12-16 04:28:08,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:28:08,972 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 552 transitions. [2023-12-16 04:28:08,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-16 04:28:08,973 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:28:08,973 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:28:08,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-16 04:28:09,179 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 [2023-12-16 04:28:09,180 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:28:09,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:28:09,180 INFO L85 PathProgramCache]: Analyzing trace with hash 162087655, now seen corresponding path program 1 times [2023-12-16 04:28:09,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:28:09,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639548843] [2023-12-16 04:28:09,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:28:09,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:28:09,205 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:28:09,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1317275067] [2023-12-16 04:28:09,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:28:09,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:28:09,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:28:09,221 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) [2023-12-16 04:28:09,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-16 04:28:09,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:28:09,385 INFO L262 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-16 04:28:09,390 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:28:09,406 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:28:09,406 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 16 [2023-12-16 04:28:09,412 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 04:28:09,412 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:28:09,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:28:09,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639548843] [2023-12-16 04:28:09,412 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:28:09,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317275067] [2023-12-16 04:28:09,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317275067] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:28:09,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:28:09,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 04:28:09,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304965150] [2023-12-16 04:28:09,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:28:09,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 04:28:09,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:28:09,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 04:28:09,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:28:09,413 INFO L87 Difference]: Start difference. First operand 456 states and 552 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:28:09,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:28:09,720 INFO L93 Difference]: Finished difference Result 981 states and 1181 transitions. [2023-12-16 04:28:09,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 04:28:09,720 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2023-12-16 04:28:09,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:28:09,722 INFO L225 Difference]: With dead ends: 981 [2023-12-16 04:28:09,722 INFO L226 Difference]: Without dead ends: 570 [2023-12-16 04:28:09,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 04:28:09,723 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 100 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 04:28:09,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 399 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 04:28:09,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2023-12-16 04:28:09,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 420. [2023-12-16 04:28:09,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 358 states have (on average 1.187150837988827) internal successors, (425), 360 states have internal predecessors, (425), 42 states have call successors, (42), 19 states have call predecessors, (42), 19 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-16 04:28:09,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 509 transitions. [2023-12-16 04:28:09,756 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 509 transitions. Word has length 124 [2023-12-16 04:28:09,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:28:09,756 INFO L495 AbstractCegarLoop]: Abstraction has 420 states and 509 transitions. [2023-12-16 04:28:09,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:28:09,756 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 509 transitions. [2023-12-16 04:28:09,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-16 04:28:09,758 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:28:09,759 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:28:09,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-16 04:28:09,965 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 [2023-12-16 04:28:09,965 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:28:09,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:28:09,965 INFO L85 PathProgramCache]: Analyzing trace with hash -824270153, now seen corresponding path program 1 times [2023-12-16 04:28:09,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:28:09,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137531045] [2023-12-16 04:28:09,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:28:09,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:28:09,987 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:28:09,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [617029566] [2023-12-16 04:28:09,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:28:09,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:28:09,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:28:10,002 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) [2023-12-16 04:28:10,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-16 04:28:10,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:28:10,185 INFO L262 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 51 conjunts are in the unsatisfiable core [2023-12-16 04:28:10,188 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:28:10,210 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:28:10,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 34 [2023-12-16 04:28:10,233 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:28:10,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 37 [2023-12-16 04:28:10,339 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:28:10,339 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 21 [2023-12-16 04:28:10,403 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 04:28:10,403 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:28:10,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:28:10,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137531045] [2023-12-16 04:28:10,403 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:28:10,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617029566] [2023-12-16 04:28:10,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617029566] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:28:10,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:28:10,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-12-16 04:28:10,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763051570] [2023-12-16 04:28:10,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:28:10,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-16 04:28:10,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:28:10,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-16 04:28:10,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2023-12-16 04:28:10,405 INFO L87 Difference]: Start difference. First operand 420 states and 509 transitions. Second operand has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:28:11,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:28:11,849 INFO L93 Difference]: Finished difference Result 1093 states and 1314 transitions. [2023-12-16 04:28:11,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-16 04:28:11,850 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2023-12-16 04:28:11,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:28:11,852 INFO L225 Difference]: With dead ends: 1093 [2023-12-16 04:28:11,853 INFO L226 Difference]: Without dead ends: 718 [2023-12-16 04:28:11,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=202, Invalid=728, Unknown=0, NotChecked=0, Total=930 [2023-12-16 04:28:11,856 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 279 mSDsluCounter, 1148 mSDsCounter, 0 mSdLazyCounter, 1162 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 1286 SdHoareTripleChecker+Invalid, 1172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:28:11,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 1286 Invalid, 1172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1162 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-16 04:28:11,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2023-12-16 04:28:11,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 495. [2023-12-16 04:28:11,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 433 states have (on average 1.2032332563510393) internal successors, (521), 435 states have internal predecessors, (521), 42 states have call successors, (42), 19 states have call predecessors, (42), 19 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-16 04:28:11,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 605 transitions. [2023-12-16 04:28:11,885 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 605 transitions. Word has length 124 [2023-12-16 04:28:11,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:28:11,885 INFO L495 AbstractCegarLoop]: Abstraction has 495 states and 605 transitions. [2023-12-16 04:28:11,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:28:11,885 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 605 transitions. [2023-12-16 04:28:11,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-16 04:28:11,886 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:28:11,886 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:28:11,894 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-16 04:28:12,092 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 [2023-12-16 04:28:12,092 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:28:12,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:28:12,092 INFO L85 PathProgramCache]: Analyzing trace with hash -144211783, now seen corresponding path program 1 times [2023-12-16 04:28:12,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:28:12,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669081415] [2023-12-16 04:28:12,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:28:12,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:28:12,107 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:28:12,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1615524158] [2023-12-16 04:28:12,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:28:12,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:28:12,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:28:12,116 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) [2023-12-16 04:28:12,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-16 04:28:12,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:28:12,282 INFO L262 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-16 04:28:12,284 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:28:12,299 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:28:12,299 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 16 [2023-12-16 04:28:12,305 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 04:28:12,305 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:28:12,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:28:12,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669081415] [2023-12-16 04:28:12,305 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:28:12,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615524158] [2023-12-16 04:28:12,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615524158] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:28:12,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:28:12,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 04:28:12,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928623887] [2023-12-16 04:28:12,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:28:12,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 04:28:12,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:28:12,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 04:28:12,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:28:12,307 INFO L87 Difference]: Start difference. First operand 495 states and 605 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:28:12,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:28:12,657 INFO L93 Difference]: Finished difference Result 1147 states and 1380 transitions. [2023-12-16 04:28:12,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 04:28:12,657 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2023-12-16 04:28:12,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:28:12,684 INFO L225 Difference]: With dead ends: 1147 [2023-12-16 04:28:12,684 INFO L226 Difference]: Without dead ends: 697 [2023-12-16 04:28:12,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:28:12,685 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 120 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 04:28:12,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 404 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 04:28:12,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2023-12-16 04:28:12,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 495. [2023-12-16 04:28:12,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 433 states have (on average 1.1893764434180139) internal successors, (515), 435 states have internal predecessors, (515), 42 states have call successors, (42), 19 states have call predecessors, (42), 19 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-16 04:28:12,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 599 transitions. [2023-12-16 04:28:12,721 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 599 transitions. Word has length 124 [2023-12-16 04:28:12,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:28:12,721 INFO L495 AbstractCegarLoop]: Abstraction has 495 states and 599 transitions. [2023-12-16 04:28:12,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:28:12,721 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 599 transitions. [2023-12-16 04:28:12,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-16 04:28:12,722 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:28:12,722 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:28:12,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-12-16 04:28:12,936 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 [2023-12-16 04:28:12,937 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:28:12,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:28:12,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1120278446, now seen corresponding path program 1 times [2023-12-16 04:28:12,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:28:12,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656696933] [2023-12-16 04:28:12,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:28:12,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:28:12,967 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:28:12,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [501078198] [2023-12-16 04:28:12,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:28:12,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:28:12,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:28:12,968 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) [2023-12-16 04:28:12,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-16 04:28:13,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:28:13,173 INFO L262 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-16 04:28:13,175 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:28:13,199 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:28:13,200 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 28 [2023-12-16 04:28:13,205 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:28:13,205 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 28 [2023-12-16 04:28:13,227 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:28:13,227 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 18 [2023-12-16 04:28:13,237 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 04:28:13,237 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:28:13,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:28:13,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656696933] [2023-12-16 04:28:13,237 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:28:13,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501078198] [2023-12-16 04:28:13,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501078198] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:28:13,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:28:13,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 04:28:13,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364264814] [2023-12-16 04:28:13,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:28:13,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 04:28:13,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:28:13,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 04:28:13,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:28:13,238 INFO L87 Difference]: Start difference. First operand 495 states and 599 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:28:13,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:28:13,715 INFO L93 Difference]: Finished difference Result 1100 states and 1321 transitions. [2023-12-16 04:28:13,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 04:28:13,716 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2023-12-16 04:28:13,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:28:13,717 INFO L225 Difference]: With dead ends: 1100 [2023-12-16 04:28:13,717 INFO L226 Difference]: Without dead ends: 650 [2023-12-16 04:28:13,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-16 04:28:13,718 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 112 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 04:28:13,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 493 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 04:28:13,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2023-12-16 04:28:13,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 501. [2023-12-16 04:28:13,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 439 states have (on average 1.1867881548974943) internal successors, (521), 441 states have internal predecessors, (521), 42 states have call successors, (42), 19 states have call predecessors, (42), 19 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-16 04:28:13,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 605 transitions. [2023-12-16 04:28:13,743 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 605 transitions. Word has length 124 [2023-12-16 04:28:13,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:28:13,743 INFO L495 AbstractCegarLoop]: Abstraction has 501 states and 605 transitions. [2023-12-16 04:28:13,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:28:13,743 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 605 transitions. [2023-12-16 04:28:13,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-16 04:28:13,744 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:28:13,744 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:28:13,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-12-16 04:28:13,950 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 [2023-12-16 04:28:13,950 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:28:13,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:28:13,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1665258809, now seen corresponding path program 1 times [2023-12-16 04:28:13,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:28:13,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82400885] [2023-12-16 04:28:13,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:28:13,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:28:13,965 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:28:13,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1699217519] [2023-12-16 04:28:13,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:28:13,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:28:13,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:28:13,982 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:28:14,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-16 04:28:14,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:28:14,135 INFO L262 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-16 04:28:14,137 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:28:14,153 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:28:14,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 16 [2023-12-16 04:28:14,159 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 04:28:14,159 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:28:14,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:28:14,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82400885] [2023-12-16 04:28:14,159 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:28:14,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699217519] [2023-12-16 04:28:14,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1699217519] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:28:14,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:28:14,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 04:28:14,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281138877] [2023-12-16 04:28:14,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:28:14,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 04:28:14,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:28:14,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 04:28:14,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:28:14,161 INFO L87 Difference]: Start difference. First operand 501 states and 605 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:28:14,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:28:14,467 INFO L93 Difference]: Finished difference Result 1048 states and 1254 transitions. [2023-12-16 04:28:14,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 04:28:14,468 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2023-12-16 04:28:14,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:28:14,469 INFO L225 Difference]: With dead ends: 1048 [2023-12-16 04:28:14,469 INFO L226 Difference]: Without dead ends: 592 [2023-12-16 04:28:14,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 04:28:14,470 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 96 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 04:28:14,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 407 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 04:28:14,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2023-12-16 04:28:14,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 465. [2023-12-16 04:28:14,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 403 states have (on average 1.186104218362283) internal successors, (478), 405 states have internal predecessors, (478), 42 states have call successors, (42), 19 states have call predecessors, (42), 19 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-16 04:28:14,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 562 transitions. [2023-12-16 04:28:14,496 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 562 transitions. Word has length 124 [2023-12-16 04:28:14,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:28:14,497 INFO L495 AbstractCegarLoop]: Abstraction has 465 states and 562 transitions. [2023-12-16 04:28:14,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:28:14,497 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 562 transitions. [2023-12-16 04:28:14,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-16 04:28:14,498 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:28:14,498 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:28:14,506 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-12-16 04:28:14,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:28:14,704 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:28:14,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:28:14,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1544648948, now seen corresponding path program 1 times [2023-12-16 04:28:14,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:28:14,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35985960] [2023-12-16 04:28:14,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:28:14,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:28:14,721 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:28:14,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1918947734] [2023-12-16 04:28:14,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:28:14,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:28:14,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:28:14,736 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:28:14,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-16 04:28:14,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:28:14,906 INFO L262 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-16 04:28:14,908 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:28:14,922 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:28:14,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 14 [2023-12-16 04:28:14,928 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 04:28:14,928 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:28:14,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:28:14,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35985960] [2023-12-16 04:28:14,928 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:28:14,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918947734] [2023-12-16 04:28:14,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918947734] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:28:14,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:28:14,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 04:28:14,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483652499] [2023-12-16 04:28:14,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:28:14,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 04:28:14,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:28:14,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 04:28:14,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:28:14,929 INFO L87 Difference]: Start difference. First operand 465 states and 562 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:28:15,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:28:15,217 INFO L93 Difference]: Finished difference Result 965 states and 1145 transitions. [2023-12-16 04:28:15,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 04:28:15,218 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2023-12-16 04:28:15,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:28:15,219 INFO L225 Difference]: With dead ends: 965 [2023-12-16 04:28:15,219 INFO L226 Difference]: Without dead ends: 545 [2023-12-16 04:28:15,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:28:15,221 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 93 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 04:28:15,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 329 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 04:28:15,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2023-12-16 04:28:15,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 423. [2023-12-16 04:28:15,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 361 states have (on average 1.1551246537396123) internal successors, (417), 363 states have internal predecessors, (417), 42 states have call successors, (42), 19 states have call predecessors, (42), 19 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-16 04:28:15,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 501 transitions. [2023-12-16 04:28:15,246 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 501 transitions. Word has length 124 [2023-12-16 04:28:15,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:28:15,246 INFO L495 AbstractCegarLoop]: Abstraction has 423 states and 501 transitions. [2023-12-16 04:28:15,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:28:15,247 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 501 transitions. [2023-12-16 04:28:15,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-16 04:28:15,247 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:28:15,247 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:28:15,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-12-16 04:28:15,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:28:15,453 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:28:15,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:28:15,453 INFO L85 PathProgramCache]: Analyzing trace with hash -260789386, now seen corresponding path program 1 times [2023-12-16 04:28:15,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:28:15,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526073662] [2023-12-16 04:28:15,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:28:15,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:28:15,471 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:28:15,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1373021656] [2023-12-16 04:28:15,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:28:15,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:28:15,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:28:15,477 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:28:15,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-16 04:28:15,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:28:15,647 INFO L262 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-16 04:28:15,649 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:28:15,677 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:28:15,677 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-12-16 04:28:15,684 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:28:15,684 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-12-16 04:28:15,706 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:28:15,706 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 16 [2023-12-16 04:28:15,743 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 04:28:15,743 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:28:15,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:28:15,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526073662] [2023-12-16 04:28:15,744 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:28:15,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373021656] [2023-12-16 04:28:15,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373021656] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:28:15,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:28:15,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 04:28:15,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138081792] [2023-12-16 04:28:15,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:28:15,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 04:28:15,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:28:15,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 04:28:15,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:28:15,745 INFO L87 Difference]: Start difference. First operand 423 states and 501 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:28:16,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:28:16,316 INFO L93 Difference]: Finished difference Result 1047 states and 1236 transitions. [2023-12-16 04:28:16,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 04:28:16,316 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2023-12-16 04:28:16,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:28:16,318 INFO L225 Difference]: With dead ends: 1047 [2023-12-16 04:28:16,318 INFO L226 Difference]: Without dead ends: 669 [2023-12-16 04:28:16,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-16 04:28:16,319 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 126 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 04:28:16,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 528 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 04:28:16,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2023-12-16 04:28:16,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 458. [2023-12-16 04:28:16,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 396 states have (on average 1.1641414141414141) internal successors, (461), 398 states have internal predecessors, (461), 42 states have call successors, (42), 19 states have call predecessors, (42), 19 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-16 04:28:16,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 545 transitions. [2023-12-16 04:28:16,350 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 545 transitions. Word has length 124 [2023-12-16 04:28:16,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:28:16,351 INFO L495 AbstractCegarLoop]: Abstraction has 458 states and 545 transitions. [2023-12-16 04:28:16,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:28:16,352 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 545 transitions. [2023-12-16 04:28:16,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-16 04:28:16,353 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:28:16,353 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:28:16,359 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-12-16 04:28:16,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-12-16 04:28:16,559 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:28:16,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:28:16,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1003700843, now seen corresponding path program 1 times [2023-12-16 04:28:16,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:28:16,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903469487] [2023-12-16 04:28:16,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:28:16,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:28:16,590 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:28:16,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1547144935] [2023-12-16 04:28:16,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:28:16,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:28:16,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:28:16,604 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:28:16,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-16 04:28:16,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:28:16,842 INFO L262 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-16 04:28:16,844 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:28:16,859 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:28:16,859 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 14 [2023-12-16 04:28:16,878 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 04:28:16,878 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:28:16,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:28:16,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903469487] [2023-12-16 04:28:16,878 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:28:16,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547144935] [2023-12-16 04:28:16,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547144935] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:28:16,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:28:16,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 04:28:16,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828458609] [2023-12-16 04:28:16,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:28:16,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 04:28:16,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:28:16,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 04:28:16,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:28:16,880 INFO L87 Difference]: Start difference. First operand 458 states and 545 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:28:17,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:28:17,402 INFO L93 Difference]: Finished difference Result 1046 states and 1233 transitions. [2023-12-16 04:28:17,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 04:28:17,403 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2023-12-16 04:28:17,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:28:17,407 INFO L225 Difference]: With dead ends: 1046 [2023-12-16 04:28:17,407 INFO L226 Difference]: Without dead ends: 633 [2023-12-16 04:28:17,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:28:17,408 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 117 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 04:28:17,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 326 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 04:28:17,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2023-12-16 04:28:17,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 458. [2023-12-16 04:28:17,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 396 states have (on average 1.1565656565656566) internal successors, (458), 398 states have internal predecessors, (458), 42 states have call successors, (42), 19 states have call predecessors, (42), 19 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-16 04:28:17,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 542 transitions. [2023-12-16 04:28:17,437 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 542 transitions. Word has length 124 [2023-12-16 04:28:17,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:28:17,437 INFO L495 AbstractCegarLoop]: Abstraction has 458 states and 542 transitions. [2023-12-16 04:28:17,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:28:17,438 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 542 transitions. [2023-12-16 04:28:17,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-16 04:28:17,438 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:28:17,438 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:28:17,444 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-12-16 04:28:17,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-16 04:28:17,644 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:28:17,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:28:17,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1683759213, now seen corresponding path program 1 times [2023-12-16 04:28:17,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:28:17,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035091439] [2023-12-16 04:28:17,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:28:17,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:28:17,661 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:28:17,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [902753826] [2023-12-16 04:28:17,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:28:17,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:28:17,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:28:17,663 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:28:17,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-12-16 04:28:17,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:28:17,862 INFO L262 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 43 conjunts are in the unsatisfiable core [2023-12-16 04:28:17,865 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:28:17,888 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:28:17,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 34 [2023-12-16 04:28:17,905 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:28:17,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 37 [2023-12-16 04:28:18,002 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:28:18,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 21 [2023-12-16 04:28:18,076 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 04:28:18,076 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:28:18,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:28:18,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035091439] [2023-12-16 04:28:18,076 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:28:18,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902753826] [2023-12-16 04:28:18,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [902753826] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:28:18,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:28:18,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-12-16 04:28:18,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091231564] [2023-12-16 04:28:18,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:28:18,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-16 04:28:18,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:28:18,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-16 04:28:18,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2023-12-16 04:28:18,078 INFO L87 Difference]: Start difference. First operand 458 states and 542 transitions. Second operand has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:28:19,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:28:19,651 INFO L93 Difference]: Finished difference Result 1096 states and 1283 transitions. [2023-12-16 04:28:19,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-16 04:28:19,664 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2023-12-16 04:28:19,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:28:19,666 INFO L225 Difference]: With dead ends: 1096 [2023-12-16 04:28:19,666 INFO L226 Difference]: Without dead ends: 683 [2023-12-16 04:28:19,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=202, Invalid=728, Unknown=0, NotChecked=0, Total=930 [2023-12-16 04:28:19,667 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 273 mSDsluCounter, 1135 mSDsCounter, 0 mSdLazyCounter, 1170 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 1275 SdHoareTripleChecker+Invalid, 1180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-16 04:28:19,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 1275 Invalid, 1180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1170 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-16 04:28:19,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2023-12-16 04:28:19,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 461. [2023-12-16 04:28:19,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 399 states have (on average 1.155388471177945) internal successors, (461), 401 states have internal predecessors, (461), 42 states have call successors, (42), 19 states have call predecessors, (42), 19 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-16 04:28:19,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 545 transitions. [2023-12-16 04:28:19,698 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 545 transitions. Word has length 124 [2023-12-16 04:28:19,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:28:19,698 INFO L495 AbstractCegarLoop]: Abstraction has 461 states and 545 transitions. [2023-12-16 04:28:19,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:28:19,698 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 545 transitions. [2023-12-16 04:28:19,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-16 04:28:19,699 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:28:19,699 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:28:19,718 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-12-16 04:28:19,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-16 04:28:19,907 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:28:19,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:28:19,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1641912334, now seen corresponding path program 1 times [2023-12-16 04:28:19,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:28:19,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058113569] [2023-12-16 04:28:19,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:28:19,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:28:19,922 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:28:19,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1259311696] [2023-12-16 04:28:19,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:28:19,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:28:19,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:28:19,932 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:28:19,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-12-16 04:28:20,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:28:20,095 INFO L262 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-16 04:28:20,097 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:28:20,117 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:28:20,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-12-16 04:28:20,123 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:28:20,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-12-16 04:28:20,136 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:28:20,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 14 [2023-12-16 04:28:20,142 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 04:28:20,142 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:28:20,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:28:20,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058113569] [2023-12-16 04:28:20,143 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:28:20,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259311696] [2023-12-16 04:28:20,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259311696] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:28:20,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:28:20,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 04:28:20,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310357814] [2023-12-16 04:28:20,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:28:20,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 04:28:20,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:28:20,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 04:28:20,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:28:20,144 INFO L87 Difference]: Start difference. First operand 461 states and 545 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:28:20,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:28:20,500 INFO L93 Difference]: Finished difference Result 1007 states and 1174 transitions. [2023-12-16 04:28:20,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 04:28:20,500 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2023-12-16 04:28:20,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:28:20,502 INFO L225 Difference]: With dead ends: 1007 [2023-12-16 04:28:20,502 INFO L226 Difference]: Without dead ends: 591 [2023-12-16 04:28:20,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:28:20,503 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 101 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 04:28:20,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 338 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 04:28:20,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2023-12-16 04:28:20,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 416. [2023-12-16 04:28:20,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 354 states have (on average 1.115819209039548) internal successors, (395), 356 states have internal predecessors, (395), 42 states have call successors, (42), 19 states have call predecessors, (42), 19 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-16 04:28:20,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 479 transitions. [2023-12-16 04:28:20,531 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 479 transitions. Word has length 124 [2023-12-16 04:28:20,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:28:20,531 INFO L495 AbstractCegarLoop]: Abstraction has 416 states and 479 transitions. [2023-12-16 04:28:20,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:28:20,532 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 479 transitions. [2023-12-16 04:28:20,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-16 04:28:20,532 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:28:20,532 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:28:20,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-12-16 04:28:20,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-16 04:28:20,738 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:28:20,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:28:20,738 INFO L85 PathProgramCache]: Analyzing trace with hash 697401405, now seen corresponding path program 1 times [2023-12-16 04:28:20,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:28:20,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830921186] [2023-12-16 04:28:20,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:28:20,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:28:20,757 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:28:20,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [376747765] [2023-12-16 04:28:20,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:28:20,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:28:20,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:28:20,758 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:28:20,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-12-16 04:28:20,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:28:20,927 INFO L262 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-16 04:28:20,929 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:28:20,944 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:28:20,945 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 14 [2023-12-16 04:28:20,950 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 04:28:20,951 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:28:20,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:28:20,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830921186] [2023-12-16 04:28:20,951 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:28:20,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376747765] [2023-12-16 04:28:20,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [376747765] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:28:20,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:28:20,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 04:28:20,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145346267] [2023-12-16 04:28:20,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:28:20,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 04:28:20,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:28:20,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 04:28:20,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:28:20,952 INFO L87 Difference]: Start difference. First operand 416 states and 479 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:28:21,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:28:21,308 INFO L93 Difference]: Finished difference Result 905 states and 1035 transitions. [2023-12-16 04:28:21,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 04:28:21,308 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2023-12-16 04:28:21,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:28:21,310 INFO L225 Difference]: With dead ends: 905 [2023-12-16 04:28:21,310 INFO L226 Difference]: Without dead ends: 534 [2023-12-16 04:28:21,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:28:21,311 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 89 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 04:28:21,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 329 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 04:28:21,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2023-12-16 04:28:21,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 416. [2023-12-16 04:28:21,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 354 states have (on average 1.112994350282486) internal successors, (394), 356 states have internal predecessors, (394), 42 states have call successors, (42), 19 states have call predecessors, (42), 19 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-16 04:28:21,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 478 transitions. [2023-12-16 04:28:21,343 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 478 transitions. Word has length 124 [2023-12-16 04:28:21,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:28:21,343 INFO L495 AbstractCegarLoop]: Abstraction has 416 states and 478 transitions. [2023-12-16 04:28:21,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:28:21,344 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 478 transitions. [2023-12-16 04:28:21,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-16 04:28:21,344 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:28:21,344 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:28:21,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-12-16 04:28:21,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-16 04:28:21,551 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:28:21,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:28:21,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1108036929, now seen corresponding path program 1 times [2023-12-16 04:28:21,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:28:21,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390462768] [2023-12-16 04:28:21,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:28:21,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:28:21,590 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:28:21,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1092950568] [2023-12-16 04:28:21,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:28:21,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:28:21,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:28:21,591 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:28:21,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-12-16 04:28:21,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:28:21,780 INFO L262 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 57 conjunts are in the unsatisfiable core [2023-12-16 04:28:21,784 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:28:21,787 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-16 04:28:21,789 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-16 04:28:21,792 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-16 04:28:21,817 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:28:21,817 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 34 [2023-12-16 04:28:21,830 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:28:21,830 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 37 [2023-12-16 04:28:21,921 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:28:21,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 21 [2023-12-16 04:28:21,991 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 04:28:21,991 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:28:21,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:28:21,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390462768] [2023-12-16 04:28:21,992 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:28:21,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092950568] [2023-12-16 04:28:21,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092950568] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:28:21,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:28:21,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-12-16 04:28:21,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820413599] [2023-12-16 04:28:21,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:28:21,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-16 04:28:21,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:28:21,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-16 04:28:21,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2023-12-16 04:28:21,993 INFO L87 Difference]: Start difference. First operand 416 states and 478 transitions. Second operand has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:28:22,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:28:22,962 INFO L93 Difference]: Finished difference Result 949 states and 1081 transitions. [2023-12-16 04:28:22,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-16 04:28:22,962 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2023-12-16 04:28:22,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:28:22,964 INFO L225 Difference]: With dead ends: 949 [2023-12-16 04:28:22,964 INFO L226 Difference]: Without dead ends: 578 [2023-12-16 04:28:22,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=179, Invalid=633, Unknown=0, NotChecked=0, Total=812 [2023-12-16 04:28:22,965 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 270 mSDsluCounter, 908 mSDsCounter, 0 mSdLazyCounter, 805 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 1049 SdHoareTripleChecker+Invalid, 815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 04:28:22,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 1049 Invalid, 815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 805 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 04:28:22,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2023-12-16 04:28:23,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 413. [2023-12-16 04:28:23,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 351 states have (on average 1.1139601139601139) internal successors, (391), 353 states have internal predecessors, (391), 42 states have call successors, (42), 19 states have call predecessors, (42), 19 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-16 04:28:23,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 475 transitions. [2023-12-16 04:28:23,044 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 475 transitions. Word has length 124 [2023-12-16 04:28:23,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:28:23,045 INFO L495 AbstractCegarLoop]: Abstraction has 413 states and 475 transitions. [2023-12-16 04:28:23,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:28:23,045 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 475 transitions. [2023-12-16 04:28:23,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-16 04:28:23,046 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:28:23,046 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:28:23,052 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-12-16 04:28:23,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:28:23,246 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:28:23,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:28:23,247 INFO L85 PathProgramCache]: Analyzing trace with hash 836511670, now seen corresponding path program 1 times [2023-12-16 04:28:23,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:28:23,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355416749] [2023-12-16 04:28:23,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:28:23,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:28:23,261 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:28:23,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1453580369] [2023-12-16 04:28:23,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:28:23,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:28:23,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:28:23,274 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:28:23,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-12-16 04:28:23,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:28:23,470 INFO L262 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-16 04:28:23,472 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:28:23,539 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:28:23,540 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 28 [2023-12-16 04:28:23,546 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:28:23,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 28 [2023-12-16 04:28:23,577 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:28:23,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 18 [2023-12-16 04:28:23,596 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 04:28:23,596 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:28:23,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:28:23,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355416749] [2023-12-16 04:28:23,597 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:28:23,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453580369] [2023-12-16 04:28:23,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453580369] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:28:23,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:28:23,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 04:28:23,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550286320] [2023-12-16 04:28:23,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:28:23,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 04:28:23,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:28:23,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 04:28:23,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:28:23,598 INFO L87 Difference]: Start difference. First operand 413 states and 475 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:28:24,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:28:24,039 INFO L93 Difference]: Finished difference Result 887 states and 1010 transitions. [2023-12-16 04:28:24,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 04:28:24,040 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2023-12-16 04:28:24,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:28:24,041 INFO L225 Difference]: With dead ends: 887 [2023-12-16 04:28:24,041 INFO L226 Difference]: Without dead ends: 519 [2023-12-16 04:28:24,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-16 04:28:24,053 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 101 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 04:28:24,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 505 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 04:28:24,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2023-12-16 04:28:24,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 393. [2023-12-16 04:28:24,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 331 states have (on average 1.0996978851963746) internal successors, (364), 333 states have internal predecessors, (364), 42 states have call successors, (42), 19 states have call predecessors, (42), 19 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-16 04:28:24,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 448 transitions. [2023-12-16 04:28:24,129 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 448 transitions. Word has length 124 [2023-12-16 04:28:24,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:28:24,129 INFO L495 AbstractCegarLoop]: Abstraction has 393 states and 448 transitions. [2023-12-16 04:28:24,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:28:24,129 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 448 transitions. [2023-12-16 04:28:24,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-16 04:28:24,130 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:28:24,130 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:28:24,139 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-12-16 04:28:24,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:28:24,337 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:28:24,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:28:24,337 INFO L85 PathProgramCache]: Analyzing trace with hash 770820785, now seen corresponding path program 1 times [2023-12-16 04:28:24,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:28:24,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796305969] [2023-12-16 04:28:24,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:28:24,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:28:24,351 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:28:24,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1486870120] [2023-12-16 04:28:24,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:28:24,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:28:24,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:28:24,354 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:28:24,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-12-16 04:28:24,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:28:24,538 INFO L262 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-16 04:28:24,556 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:28:24,559 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:28:24,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 7 [2023-12-16 04:28:24,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 27 [2023-12-16 04:28:24,776 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:28:24,776 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 41 [2023-12-16 04:28:24,852 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 04:28:24,852 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:28:24,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:28:24,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796305969] [2023-12-16 04:28:24,852 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:28:24,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486870120] [2023-12-16 04:28:24,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486870120] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:28:24,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:28:24,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-16 04:28:24,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281713862] [2023-12-16 04:28:24,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:28:24,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-16 04:28:24,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:28:24,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-16 04:28:24,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-12-16 04:28:24,855 INFO L87 Difference]: Start difference. First operand 393 states and 448 transitions. Second operand has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:28:25,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:28:25,746 INFO L93 Difference]: Finished difference Result 535 states and 602 transitions. [2023-12-16 04:28:25,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-16 04:28:25,746 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 127 [2023-12-16 04:28:25,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:28:25,748 INFO L225 Difference]: With dead ends: 535 [2023-12-16 04:28:25,748 INFO L226 Difference]: Without dead ends: 533 [2023-12-16 04:28:25,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=441, Unknown=0, NotChecked=0, Total=552 [2023-12-16 04:28:25,750 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 131 mSDsluCounter, 790 mSDsCounter, 0 mSdLazyCounter, 875 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 888 SdHoareTripleChecker+Invalid, 884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 04:28:25,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 888 Invalid, 884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 875 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 04:28:25,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2023-12-16 04:28:25,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 477. [2023-12-16 04:28:25,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 414 states have (on average 1.0942028985507246) internal successors, (453), 416 states have internal predecessors, (453), 42 states have call successors, (42), 20 states have call predecessors, (42), 20 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-16 04:28:25,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 537 transitions. [2023-12-16 04:28:25,791 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 537 transitions. Word has length 127 [2023-12-16 04:28:25,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:28:25,791 INFO L495 AbstractCegarLoop]: Abstraction has 477 states and 537 transitions. [2023-12-16 04:28:25,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:28:25,791 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 537 transitions. [2023-12-16 04:28:25,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-16 04:28:25,792 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:28:25,792 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:28:25,808 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-12-16 04:28:25,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:28:25,998 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:28:25,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:28:25,999 INFO L85 PathProgramCache]: Analyzing trace with hash -38525841, now seen corresponding path program 1 times [2023-12-16 04:28:25,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:28:25,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404200452] [2023-12-16 04:28:25,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:28:25,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:28:26,011 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:28:26,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [11332053] [2023-12-16 04:28:26,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:28:26,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:28:26,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:28:26,026 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:28:26,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-12-16 04:28:26,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:28:26,205 INFO L262 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-16 04:28:26,208 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:28:26,210 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:28:26,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 7 [2023-12-16 04:28:26,229 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2023-12-16 04:28:26,249 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 04:28:26,249 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:28:26,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:28:26,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404200452] [2023-12-16 04:28:26,249 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:28:26,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11332053] [2023-12-16 04:28:26,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11332053] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:28:26,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:28:26,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 04:28:26,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140735843] [2023-12-16 04:28:26,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:28:26,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 04:28:26,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:28:26,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 04:28:26,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:28:26,254 INFO L87 Difference]: Start difference. First operand 477 states and 537 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:28:26,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:28:26,480 INFO L93 Difference]: Finished difference Result 968 states and 1091 transitions. [2023-12-16 04:28:26,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 04:28:26,480 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 127 [2023-12-16 04:28:26,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:28:26,481 INFO L225 Difference]: With dead ends: 968 [2023-12-16 04:28:26,481 INFO L226 Difference]: Without dead ends: 492 [2023-12-16 04:28:26,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 04:28:26,482 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 41 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 04:28:26,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 332 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 04:28:26,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2023-12-16 04:28:26,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 471. [2023-12-16 04:28:26,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 408 states have (on average 1.0906862745098038) internal successors, (445), 410 states have internal predecessors, (445), 42 states have call successors, (42), 20 states have call predecessors, (42), 20 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-16 04:28:26,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 529 transitions. [2023-12-16 04:28:26,521 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 529 transitions. Word has length 127 [2023-12-16 04:28:26,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:28:26,521 INFO L495 AbstractCegarLoop]: Abstraction has 471 states and 529 transitions. [2023-12-16 04:28:26,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:28:26,521 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 529 transitions. [2023-12-16 04:28:26,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-16 04:28:26,522 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:28:26,522 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:28:26,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2023-12-16 04:28:26,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-12-16 04:28:26,728 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:28:26,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:28:26,729 INFO L85 PathProgramCache]: Analyzing trace with hash 636807279, now seen corresponding path program 1 times [2023-12-16 04:28:26,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:28:26,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34440316] [2023-12-16 04:28:26,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:28:26,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:28:26,743 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:28:26,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [941542614] [2023-12-16 04:28:26,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:28:26,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:28:26,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:28:26,744 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:28:26,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-12-16 04:28:26,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:28:26,923 INFO L262 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-16 04:28:26,925 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:28:26,928 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:28:26,928 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 7 [2023-12-16 04:28:26,950 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-12-16 04:28:26,971 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 04:28:26,971 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:28:26,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:28:26,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34440316] [2023-12-16 04:28:26,971 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:28:26,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941542614] [2023-12-16 04:28:26,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941542614] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:28:26,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:28:26,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 04:28:26,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592078583] [2023-12-16 04:28:26,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:28:26,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 04:28:26,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:28:26,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 04:28:26,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:28:26,973 INFO L87 Difference]: Start difference. First operand 471 states and 529 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:28:27,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:28:27,225 INFO L93 Difference]: Finished difference Result 941 states and 1057 transitions. [2023-12-16 04:28:27,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 04:28:27,225 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 127 [2023-12-16 04:28:27,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:28:27,226 INFO L225 Difference]: With dead ends: 941 [2023-12-16 04:28:27,226 INFO L226 Difference]: Without dead ends: 471 [2023-12-16 04:28:27,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:28:27,227 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 48 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 04:28:27,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 391 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 04:28:27,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2023-12-16 04:28:27,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 471. [2023-12-16 04:28:27,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 408 states have (on average 1.088235294117647) internal successors, (444), 410 states have internal predecessors, (444), 42 states have call successors, (42), 20 states have call predecessors, (42), 20 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-16 04:28:27,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 528 transitions. [2023-12-16 04:28:27,283 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 528 transitions. Word has length 127 [2023-12-16 04:28:27,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:28:27,283 INFO L495 AbstractCegarLoop]: Abstraction has 471 states and 528 transitions. [2023-12-16 04:28:27,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:28:27,283 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 528 transitions. [2023-12-16 04:28:27,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-16 04:28:27,284 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:28:27,284 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:28:27,302 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2023-12-16 04:28:27,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:28:27,491 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:28:27,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:28:27,492 INFO L85 PathProgramCache]: Analyzing trace with hash -172539347, now seen corresponding path program 1 times [2023-12-16 04:28:27,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:28:27,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125624337] [2023-12-16 04:28:27,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:28:27,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:28:27,505 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:28:27,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [882781122] [2023-12-16 04:28:27,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:28:27,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:28:27,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:28:27,508 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:28:27,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-12-16 04:28:27,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:28:27,689 INFO L262 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-16 04:28:27,692 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:28:27,700 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-16 04:28:27,767 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 04:28:27,768 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:28:27,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:28:27,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125624337] [2023-12-16 04:28:27,768 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:28:27,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882781122] [2023-12-16 04:28:27,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882781122] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:28:27,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:28:27,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-16 04:28:27,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951580054] [2023-12-16 04:28:27,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:28:27,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-16 04:28:27,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:28:27,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-16 04:28:27,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-12-16 04:28:27,771 INFO L87 Difference]: Start difference. First operand 471 states and 528 transitions. Second operand has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:28:28,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:28:28,509 INFO L93 Difference]: Finished difference Result 545 states and 621 transitions. [2023-12-16 04:28:28,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 04:28:28,510 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 127 [2023-12-16 04:28:28,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:28:28,510 INFO L225 Difference]: With dead ends: 545 [2023-12-16 04:28:28,511 INFO L226 Difference]: Without dead ends: 0 [2023-12-16 04:28:28,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2023-12-16 04:28:28,512 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 107 mSDsluCounter, 1270 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 1428 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 04:28:28,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 1428 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 653 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 04:28:28,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-16 04:28:28,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-16 04:28:28,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:28:28,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-16 04:28:28,512 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 127 [2023-12-16 04:28:28,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:28:28,512 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-16 04:28:28,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:28:28,513 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-16 04:28:28,513 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-16 04:28:28,515 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 04:28:28,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2023-12-16 04:28:28,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-12-16 04:28:28,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. Received shutdown request... [2023-12-16 04:28:51,994 WARN L619 AbstractCegarLoop]: Verification canceled: while PolyPacSimplificationTermWalker was simplifying a ∨-27-5-24-5-22-5-21-5-20-5-19-5-18-5-17-5-16-5-15-5-14-5-13-5-12-5-11-5-10-5-9-5-8-5-7-5-6-5-5-5-3-4-2-4-2-4-1 term,while PolyPacSimplificationTermWalker was simplifying 5 xjuncts wrt. a ∧-72-6-24-6-22-6-21-6-20-6-19-5-18-5-17-5-16-5-15-5-14-5-13-5-12-5-11-5-10-5-9-5-8-5-7-5-6-5-5-5-3-4-2-4-2-4-1 context. [2023-12-16 04:28:51,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-16 04:28:52,026 INFO L257 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2023-12-16 04:28:52,028 INFO L158 Benchmark]: Toolchain (without parser) took 75288.29ms. Allocated memory was 327.2MB in the beginning and 565.2MB in the end (delta: 238.0MB). Free memory was 274.7MB in the beginning and 412.8MB in the end (delta: -138.0MB). Peak memory consumption was 101.1MB. Max. memory is 8.0GB. [2023-12-16 04:28:52,028 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 184.5MB. Free memory is still 134.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 04:28:52,028 INFO L158 Benchmark]: CACSL2BoogieTranslator took 264.02ms. Allocated memory is still 327.2MB. Free memory was 274.2MB in the beginning and 258.5MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-16 04:28:52,028 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.87ms. Allocated memory is still 327.2MB. Free memory was 258.5MB in the beginning and 253.8MB in the end (delta: 4.7MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-16 04:28:52,028 INFO L158 Benchmark]: Boogie Preprocessor took 88.64ms. Allocated memory is still 327.2MB. Free memory was 253.8MB in the beginning and 249.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-16 04:28:52,028 INFO L158 Benchmark]: RCFGBuilder took 973.50ms. Allocated memory is still 327.2MB. Free memory was 249.1MB in the beginning and 217.1MB in the end (delta: 32.0MB). Peak memory consumption was 32.5MB. Max. memory is 8.0GB. [2023-12-16 04:28:52,029 INFO L158 Benchmark]: TraceAbstraction took 73882.52ms. Allocated memory was 327.2MB in the beginning and 565.2MB in the end (delta: 238.0MB). Free memory was 216.0MB in the beginning and 412.8MB in the end (delta: -196.7MB). Peak memory consumption was 42.3MB. Max. memory is 8.0GB. [2023-12-16 04:28:52,029 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 184.5MB. Free memory is still 134.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 264.02ms. Allocated memory is still 327.2MB. Free memory was 274.2MB in the beginning and 258.5MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 60.87ms. Allocated memory is still 327.2MB. Free memory was 258.5MB in the beginning and 253.8MB in the end (delta: 4.7MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 88.64ms. Allocated memory is still 327.2MB. Free memory was 253.8MB in the beginning and 249.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 973.50ms. Allocated memory is still 327.2MB. Free memory was 249.1MB in the beginning and 217.1MB in the end (delta: 32.0MB). Peak memory consumption was 32.5MB. Max. memory is 8.0GB. * TraceAbstraction took 73882.52ms. Allocated memory was 327.2MB in the beginning and 565.2MB in the end (delta: 238.0MB). Free memory was 216.0MB in the beginning and 412.8MB in the end (delta: -196.7MB). Peak memory consumption was 42.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while PolyPacSimplificationTermWalker was simplifying a ∨-27-5-24-5-22-5-21-5-20-5-19-5-18-5-17-5-16-5-15-5-14-5-13-5-12-5-11-5-10-5-9-5-8-5-7-5-6-5-5-5-3-4-2-4-2-4-1 term,while PolyPacSimplificationTermWalker was simplifying 5 xjuncts wrt. a ∧-50-5-24-5-22-5-21-5-20-5-19-5-18-5-17-5-16-5-15-5-14-5-13-5-12-5-11-5-10-5-9-5-8-5-7-5-6-5-5-5-3-4-2-4-2-4-1 context. [2023-12-16 04:28:52,032 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown