/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-62.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 16:15:40,086 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 16:15:40,168 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 16:15:40,172 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 16:15:40,172 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 16:15:40,196 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 16:15:40,196 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 16:15:40,197 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 16:15:40,197 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 16:15:40,197 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 16:15:40,198 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 16:15:40,198 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 16:15:40,198 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 16:15:40,201 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 16:15:40,201 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 16:15:40,201 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 16:15:40,202 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 16:15:40,202 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 16:15:40,203 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 16:15:40,203 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 16:15:40,203 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 16:15:40,204 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 16:15:40,204 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 16:15:40,204 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 16:15:40,204 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 16:15:40,204 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 16:15:40,204 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 16:15:40,205 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 16:15:40,205 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 16:15:40,205 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 16:15:40,206 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 16:15:40,206 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 16:15:40,206 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 16:15:40,207 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 16:15:40,207 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 16:15:40,207 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 16:15:40,207 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 16:15:40,207 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 16:15:40,207 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 16:15:40,207 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 16:15:40,208 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 16:15:40,208 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 16:15:40,208 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 16:15:40,208 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 16:15:40,421 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 16:15:40,441 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 16:15:40,442 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 16:15:40,443 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 16:15:40,443 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 16:15:40,444 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-62.i [2023-12-19 16:15:41,434 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 16:15:41,665 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 16:15:41,666 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-62.i [2023-12-19 16:15:41,675 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54664cdff/fef93e524b264c5fae0bffbcb249d6db/FLAGfedfcc7dc [2023-12-19 16:15:41,691 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54664cdff/fef93e524b264c5fae0bffbcb249d6db [2023-12-19 16:15:41,693 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 16:15:41,694 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 16:15:41,696 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 16:15:41,696 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 16:15:41,699 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 16:15:41,700 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 04:15:41" (1/1) ... [2023-12-19 16:15:41,700 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2917faa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:15:41, skipping insertion in model container [2023-12-19 16:15:41,700 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 04:15:41" (1/1) ... [2023-12-19 16:15:41,726 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 16:15:41,851 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-sp_file-62.i[917,930] [2023-12-19 16:15:41,902 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 16:15:41,915 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 16:15:41,924 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-sp_file-62.i[917,930] [2023-12-19 16:15:41,946 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 16:15:41,961 INFO L206 MainTranslator]: Completed translation [2023-12-19 16:15:41,961 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:15:41 WrapperNode [2023-12-19 16:15:41,961 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 16:15:41,962 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 16:15:41,962 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 16:15:41,962 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 16:15:41,968 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:15:41" (1/1) ... [2023-12-19 16:15:41,976 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:15:41" (1/1) ... [2023-12-19 16:15:42,002 INFO L138 Inliner]: procedures = 26, calls = 107, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 332 [2023-12-19 16:15:42,003 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 16:15:42,003 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 16:15:42,003 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 16:15:42,003 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 16:15:42,017 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:15:41" (1/1) ... [2023-12-19 16:15:42,017 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:15:41" (1/1) ... [2023-12-19 16:15:42,021 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:15:41" (1/1) ... [2023-12-19 16:15:42,045 INFO L175 MemorySlicer]: Split 87 memory accesses to 2 slices as follows [2, 85]. 98 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 10]. The 14 writes are split as follows [0, 14]. [2023-12-19 16:15:42,045 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:15:41" (1/1) ... [2023-12-19 16:15:42,045 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:15:41" (1/1) ... [2023-12-19 16:15:42,052 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:15:41" (1/1) ... [2023-12-19 16:15:42,072 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:15:41" (1/1) ... [2023-12-19 16:15:42,073 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:15:41" (1/1) ... [2023-12-19 16:15:42,075 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:15:41" (1/1) ... [2023-12-19 16:15:42,077 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 16:15:42,078 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 16:15:42,078 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 16:15:42,078 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 16:15:42,079 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:15:41" (1/1) ... [2023-12-19 16:15:42,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 16:15:42,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 16:15:42,126 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-19 16:15:42,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-19 16:15:42,155 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 16:15:42,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-19 16:15:42,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-19 16:15:42,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-19 16:15:42,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-19 16:15:42,156 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 16:15:42,157 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 16:15:42,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 16:15:42,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-19 16:15:42,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 16:15:42,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 16:15:42,264 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 16:15:42,266 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 16:15:42,614 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 16:15:42,640 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 16:15:42,640 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 16:15:42,641 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 04:15:42 BoogieIcfgContainer [2023-12-19 16:15:42,641 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 16:15:42,642 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 16:15:42,642 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 16:15:42,644 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 16:15:42,645 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 04:15:41" (1/3) ... [2023-12-19 16:15:42,645 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43acdd58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 04:15:42, skipping insertion in model container [2023-12-19 16:15:42,645 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:15:41" (2/3) ... [2023-12-19 16:15:42,646 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43acdd58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 04:15:42, skipping insertion in model container [2023-12-19 16:15:42,646 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 04:15:42" (3/3) ... [2023-12-19 16:15:42,647 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-sp_file-62.i [2023-12-19 16:15:42,658 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 16:15:42,659 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 16:15:42,695 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 16:15:42,699 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;@5104f8f6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 16:15:42,699 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 16:15:42,702 INFO L276 IsEmpty]: Start isEmpty. Operand has 66 states, 55 states have (on average 1.4727272727272727) internal successors, (81), 56 states have internal predecessors, (81), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-19 16:15:42,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-19 16:15:42,709 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 16:15:42,710 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 16:15:42,710 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 16:15:42,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 16:15:42,714 INFO L85 PathProgramCache]: Analyzing trace with hash -324092677, now seen corresponding path program 1 times [2023-12-19 16:15:42,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 16:15:42,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673581706] [2023-12-19 16:15:42,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 16:15:42,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 16:15:42,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:42,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 16:15:42,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:42,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 16:15:42,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:42,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 16:15:42,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:42,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 16:15:42,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:42,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 16:15:42,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:42,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 16:15:42,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:42,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 16:15:42,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:42,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 16:15:42,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:42,934 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-19 16:15:42,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 16:15:42,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673581706] [2023-12-19 16:15:42,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673581706] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 16:15:42,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 16:15:42,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 16:15:42,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237128142] [2023-12-19 16:15:42,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 16:15:42,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 16:15:42,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 16:15:42,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 16:15:42,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 16:15:42,964 INFO L87 Difference]: Start difference. First operand has 66 states, 55 states have (on average 1.4727272727272727) internal successors, (81), 56 states have internal predecessors, (81), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-19 16:15:43,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 16:15:43,003 INFO L93 Difference]: Finished difference Result 129 states and 200 transitions. [2023-12-19 16:15:43,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 16:15:43,005 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) Word has length 68 [2023-12-19 16:15:43,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 16:15:43,011 INFO L225 Difference]: With dead ends: 129 [2023-12-19 16:15:43,011 INFO L226 Difference]: Without dead ends: 64 [2023-12-19 16:15:43,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 16:15:43,019 INFO L413 NwaCegarLoop]: 88 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, 88 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 16:15:43,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 88 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 16:15:43,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-12-19 16:15:43,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2023-12-19 16:15:43,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 54 states have (on average 1.4074074074074074) internal successors, (76), 54 states have internal predecessors, (76), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-19 16:15:43,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 92 transitions. [2023-12-19 16:15:43,052 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 92 transitions. Word has length 68 [2023-12-19 16:15:43,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 16:15:43,052 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 92 transitions. [2023-12-19 16:15:43,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-19 16:15:43,052 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 92 transitions. [2023-12-19 16:15:43,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-19 16:15:43,054 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 16:15:43,054 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 16:15:43,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 16:15:43,055 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 16:15:43,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 16:15:43,055 INFO L85 PathProgramCache]: Analyzing trace with hash -384552725, now seen corresponding path program 1 times [2023-12-19 16:15:43,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 16:15:43,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222734829] [2023-12-19 16:15:43,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 16:15:43,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 16:15:43,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:43,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 16:15:43,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:43,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 16:15:43,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:43,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 16:15:43,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:43,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 16:15:43,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:43,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 16:15:43,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:43,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 16:15:43,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:43,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 16:15:43,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:43,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 16:15:43,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:43,223 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-19 16:15:43,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 16:15:43,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222734829] [2023-12-19 16:15:43,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222734829] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 16:15:43,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 16:15:43,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 16:15:43,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338487099] [2023-12-19 16:15:43,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 16:15:43,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 16:15:43,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 16:15:43,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 16:15:43,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 16:15:43,226 INFO L87 Difference]: Start difference. First operand 64 states and 92 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-19 16:15:43,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 16:15:43,261 INFO L93 Difference]: Finished difference Result 135 states and 194 transitions. [2023-12-19 16:15:43,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 16:15:43,262 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 68 [2023-12-19 16:15:43,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 16:15:43,263 INFO L225 Difference]: With dead ends: 135 [2023-12-19 16:15:43,263 INFO L226 Difference]: Without dead ends: 72 [2023-12-19 16:15:43,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 16:15:43,264 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 12 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 16:15:43,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 252 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 16:15:43,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-12-19 16:15:43,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 66. [2023-12-19 16:15:43,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 56 states have (on average 1.3928571428571428) internal successors, (78), 56 states have internal predecessors, (78), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-19 16:15:43,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 94 transitions. [2023-12-19 16:15:43,270 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 94 transitions. Word has length 68 [2023-12-19 16:15:43,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 16:15:43,271 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 94 transitions. [2023-12-19 16:15:43,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-19 16:15:43,271 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 94 transitions. [2023-12-19 16:15:43,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-19 16:15:43,272 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 16:15:43,272 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 16:15:43,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 16:15:43,272 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 16:15:43,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 16:15:43,273 INFO L85 PathProgramCache]: Analyzing trace with hash -327294423, now seen corresponding path program 1 times [2023-12-19 16:15:43,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 16:15:43,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833129970] [2023-12-19 16:15:43,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 16:15:43,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 16:15:43,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:43,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 16:15:43,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:43,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 16:15:43,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:43,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 16:15:43,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:43,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 16:15:43,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:43,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 16:15:43,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:43,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 16:15:43,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:43,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 16:15:43,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:43,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 16:15:43,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:43,382 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-19 16:15:43,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 16:15:43,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833129970] [2023-12-19 16:15:43,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833129970] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 16:15:43,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 16:15:43,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 16:15:43,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253323447] [2023-12-19 16:15:43,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 16:15:43,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 16:15:43,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 16:15:43,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 16:15:43,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 16:15:43,384 INFO L87 Difference]: Start difference. First operand 66 states and 94 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-19 16:15:43,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 16:15:43,409 INFO L93 Difference]: Finished difference Result 135 states and 192 transitions. [2023-12-19 16:15:43,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 16:15:43,410 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 68 [2023-12-19 16:15:43,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 16:15:43,411 INFO L225 Difference]: With dead ends: 135 [2023-12-19 16:15:43,411 INFO L226 Difference]: Without dead ends: 70 [2023-12-19 16:15:43,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 16:15:43,412 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 3 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 16:15:43,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 253 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 16:15:43,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-12-19 16:15:43,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2023-12-19 16:15:43,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 58 states have (on average 1.3793103448275863) internal successors, (80), 58 states have internal predecessors, (80), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-19 16:15:43,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 96 transitions. [2023-12-19 16:15:43,417 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 96 transitions. Word has length 68 [2023-12-19 16:15:43,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 16:15:43,417 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 96 transitions. [2023-12-19 16:15:43,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-19 16:15:43,417 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 96 transitions. [2023-12-19 16:15:43,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-19 16:15:43,418 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 16:15:43,418 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 16:15:43,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 16:15:43,418 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 16:15:43,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 16:15:43,419 INFO L85 PathProgramCache]: Analyzing trace with hash -327234841, now seen corresponding path program 1 times [2023-12-19 16:15:43,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 16:15:43,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099513041] [2023-12-19 16:15:43,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 16:15:43,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 16:15:43,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:44,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 16:15:44,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:44,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 16:15:44,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:44,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 16:15:44,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:44,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 16:15:44,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:44,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 16:15:44,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:44,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 16:15:44,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:44,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 16:15:44,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:44,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 16:15:44,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:44,120 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-19 16:15:44,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 16:15:44,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099513041] [2023-12-19 16:15:44,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099513041] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 16:15:44,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 16:15:44,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 16:15:44,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557812566] [2023-12-19 16:15:44,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 16:15:44,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 16:15:44,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 16:15:44,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 16:15:44,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-19 16:15:44,124 INFO L87 Difference]: Start difference. First operand 68 states and 96 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-19 16:15:44,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 16:15:44,346 INFO L93 Difference]: Finished difference Result 171 states and 240 transitions. [2023-12-19 16:15:44,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 16:15:44,346 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 68 [2023-12-19 16:15:44,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 16:15:44,347 INFO L225 Difference]: With dead ends: 171 [2023-12-19 16:15:44,347 INFO L226 Difference]: Without dead ends: 104 [2023-12-19 16:15:44,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-19 16:15:44,348 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 174 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 16:15:44,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 168 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 16:15:44,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-12-19 16:15:44,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 70. [2023-12-19 16:15:44,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 60 states have (on average 1.3666666666666667) internal successors, (82), 60 states have internal predecessors, (82), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-19 16:15:44,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 98 transitions. [2023-12-19 16:15:44,355 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 98 transitions. Word has length 68 [2023-12-19 16:15:44,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 16:15:44,355 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 98 transitions. [2023-12-19 16:15:44,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-19 16:15:44,355 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 98 transitions. [2023-12-19 16:15:44,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-19 16:15:44,356 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 16:15:44,356 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 16:15:44,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 16:15:44,356 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 16:15:44,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 16:15:44,357 INFO L85 PathProgramCache]: Analyzing trace with hash 948488268, now seen corresponding path program 1 times [2023-12-19 16:15:44,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 16:15:44,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188782792] [2023-12-19 16:15:44,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 16:15:44,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 16:15:44,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:44,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 16:15:44,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:44,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 16:15:44,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:44,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 16:15:44,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:44,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 16:15:44,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:44,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 16:15:44,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:44,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 16:15:44,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:44,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 16:15:44,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:44,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 16:15:44,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:44,600 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-19 16:15:44,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 16:15:44,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188782792] [2023-12-19 16:15:44,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188782792] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 16:15:44,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 16:15:44,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 16:15:44,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789373979] [2023-12-19 16:15:44,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 16:15:44,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 16:15:44,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 16:15:44,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 16:15:44,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-19 16:15:44,604 INFO L87 Difference]: Start difference. First operand 70 states and 98 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-19 16:15:44,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 16:15:44,855 INFO L93 Difference]: Finished difference Result 205 states and 286 transitions. [2023-12-19 16:15:44,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 16:15:44,855 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 70 [2023-12-19 16:15:44,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 16:15:44,856 INFO L225 Difference]: With dead ends: 205 [2023-12-19 16:15:44,856 INFO L226 Difference]: Without dead ends: 136 [2023-12-19 16:15:44,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2023-12-19 16:15:44,858 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 339 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 16:15:44,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 369 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 16:15:44,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2023-12-19 16:15:44,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 80. [2023-12-19 16:15:44,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 70 states have (on average 1.3714285714285714) internal successors, (96), 70 states have internal predecessors, (96), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-19 16:15:44,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 112 transitions. [2023-12-19 16:15:44,866 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 112 transitions. Word has length 70 [2023-12-19 16:15:44,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 16:15:44,867 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 112 transitions. [2023-12-19 16:15:44,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-19 16:15:44,867 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 112 transitions. [2023-12-19 16:15:44,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-19 16:15:44,868 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 16:15:44,868 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 16:15:44,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 16:15:44,868 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 16:15:44,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 16:15:44,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1383606130, now seen corresponding path program 1 times [2023-12-19 16:15:44,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 16:15:44,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758528246] [2023-12-19 16:15:44,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 16:15:44,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 16:15:44,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:45,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 16:15:45,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:45,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 16:15:45,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:45,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 16:15:45,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:45,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 16:15:45,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:45,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 16:15:45,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:45,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 16:15:45,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:45,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 16:15:45,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:45,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 16:15:45,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:45,318 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-19 16:15:45,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 16:15:45,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758528246] [2023-12-19 16:15:45,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758528246] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 16:15:45,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 16:15:45,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 16:15:45,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635364839] [2023-12-19 16:15:45,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 16:15:45,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 16:15:45,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 16:15:45,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 16:15:45,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-19 16:15:45,320 INFO L87 Difference]: Start difference. First operand 80 states and 112 transitions. Second operand has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-19 16:15:45,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 16:15:45,498 INFO L93 Difference]: Finished difference Result 160 states and 224 transitions. [2023-12-19 16:15:45,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 16:15:45,499 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 70 [2023-12-19 16:15:45,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 16:15:45,500 INFO L225 Difference]: With dead ends: 160 [2023-12-19 16:15:45,500 INFO L226 Difference]: Without dead ends: 81 [2023-12-19 16:15:45,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2023-12-19 16:15:45,507 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 192 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 16:15:45,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 105 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 16:15:45,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-12-19 16:15:45,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 78. [2023-12-19 16:15:45,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 68 states have (on average 1.3676470588235294) internal successors, (93), 68 states have internal predecessors, (93), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-19 16:15:45,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 109 transitions. [2023-12-19 16:15:45,519 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 109 transitions. Word has length 70 [2023-12-19 16:15:45,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 16:15:45,520 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 109 transitions. [2023-12-19 16:15:45,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-19 16:15:45,520 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 109 transitions. [2023-12-19 16:15:45,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-19 16:15:45,520 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 16:15:45,521 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 16:15:45,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 16:15:45,521 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 16:15:45,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 16:15:45,521 INFO L85 PathProgramCache]: Analyzing trace with hash -628950047, now seen corresponding path program 1 times [2023-12-19 16:15:45,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 16:15:45,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955988783] [2023-12-19 16:15:45,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 16:15:45,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 16:15:45,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:45,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 16:15:45,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:45,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 16:15:45,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:45,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 16:15:45,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:45,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 16:15:45,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:45,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 16:15:45,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:45,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 16:15:45,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:45,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 16:15:45,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:45,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 16:15:45,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:45,620 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-19 16:15:45,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 16:15:45,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955988783] [2023-12-19 16:15:45,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955988783] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 16:15:45,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 16:15:45,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 16:15:45,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232896871] [2023-12-19 16:15:45,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 16:15:45,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 16:15:45,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 16:15:45,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 16:15:45,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 16:15:45,622 INFO L87 Difference]: Start difference. First operand 78 states and 109 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-19 16:15:45,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 16:15:45,659 INFO L93 Difference]: Finished difference Result 171 states and 239 transitions. [2023-12-19 16:15:45,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 16:15:45,660 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 72 [2023-12-19 16:15:45,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 16:15:45,661 INFO L225 Difference]: With dead ends: 171 [2023-12-19 16:15:45,661 INFO L226 Difference]: Without dead ends: 94 [2023-12-19 16:15:45,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 16:15:45,666 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 60 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 16:15:45,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 319 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 16:15:45,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-12-19 16:15:45,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 81. [2023-12-19 16:15:45,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 71 states have (on average 1.352112676056338) internal successors, (96), 71 states have internal predecessors, (96), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-19 16:15:45,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 112 transitions. [2023-12-19 16:15:45,677 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 112 transitions. Word has length 72 [2023-12-19 16:15:45,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 16:15:45,678 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 112 transitions. [2023-12-19 16:15:45,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-19 16:15:45,678 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 112 transitions. [2023-12-19 16:15:45,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-19 16:15:45,682 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 16:15:45,682 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 16:15:45,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-19 16:15:45,682 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 16:15:45,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 16:15:45,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1455457008, now seen corresponding path program 1 times [2023-12-19 16:15:45,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 16:15:45,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577985345] [2023-12-19 16:15:45,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 16:15:45,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 16:15:45,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:46,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 16:15:46,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:46,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 16:15:46,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:46,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 16:15:46,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:46,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 16:15:46,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:46,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 16:15:46,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:46,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 16:15:46,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:46,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 16:15:46,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:46,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 16:15:46,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:46,155 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-19 16:15:46,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 16:15:46,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577985345] [2023-12-19 16:15:46,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577985345] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 16:15:46,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 16:15:46,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 16:15:46,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559223234] [2023-12-19 16:15:46,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 16:15:46,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 16:15:46,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 16:15:46,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 16:15:46,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-19 16:15:46,156 INFO L87 Difference]: Start difference. First operand 81 states and 112 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-19 16:15:46,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 16:15:46,386 INFO L93 Difference]: Finished difference Result 221 states and 302 transitions. [2023-12-19 16:15:46,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 16:15:46,386 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 72 [2023-12-19 16:15:46,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 16:15:46,387 INFO L225 Difference]: With dead ends: 221 [2023-12-19 16:15:46,387 INFO L226 Difference]: Without dead ends: 141 [2023-12-19 16:15:46,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-12-19 16:15:46,388 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 413 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 16:15:46,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 197 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 16:15:46,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2023-12-19 16:15:46,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 81. [2023-12-19 16:15:46,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 71 states have (on average 1.3380281690140845) internal successors, (95), 71 states have internal predecessors, (95), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-19 16:15:46,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 111 transitions. [2023-12-19 16:15:46,394 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 111 transitions. Word has length 72 [2023-12-19 16:15:46,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 16:15:46,394 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 111 transitions. [2023-12-19 16:15:46,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-19 16:15:46,394 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 111 transitions. [2023-12-19 16:15:46,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-19 16:15:46,395 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 16:15:46,395 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 16:15:46,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-19 16:15:46,395 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 16:15:46,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 16:15:46,395 INFO L85 PathProgramCache]: Analyzing trace with hash 94187031, now seen corresponding path program 1 times [2023-12-19 16:15:46,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 16:15:46,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821145604] [2023-12-19 16:15:46,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 16:15:46,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 16:15:46,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:46,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 16:15:46,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:46,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 16:15:46,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:46,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 16:15:46,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:46,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 16:15:46,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:46,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 16:15:46,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:46,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 16:15:46,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:46,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 16:15:46,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:46,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 16:15:46,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:46,708 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-19 16:15:46,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 16:15:46,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821145604] [2023-12-19 16:15:46,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821145604] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 16:15:46,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 16:15:46,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-19 16:15:46,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838053785] [2023-12-19 16:15:46,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 16:15:46,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 16:15:46,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 16:15:46,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 16:15:46,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-12-19 16:15:46,710 INFO L87 Difference]: Start difference. First operand 81 states and 111 transitions. Second operand has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-19 16:15:47,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 16:15:47,069 INFO L93 Difference]: Finished difference Result 229 states and 311 transitions. [2023-12-19 16:15:47,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 16:15:47,070 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 72 [2023-12-19 16:15:47,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 16:15:47,071 INFO L225 Difference]: With dead ends: 229 [2023-12-19 16:15:47,071 INFO L226 Difference]: Without dead ends: 149 [2023-12-19 16:15:47,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2023-12-19 16:15:47,072 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 280 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 16:15:47,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 370 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 16:15:47,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2023-12-19 16:15:47,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 84. [2023-12-19 16:15:47,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 74 states have (on average 1.337837837837838) internal successors, (99), 74 states have internal predecessors, (99), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-19 16:15:47,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 115 transitions. [2023-12-19 16:15:47,078 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 115 transitions. Word has length 72 [2023-12-19 16:15:47,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 16:15:47,079 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 115 transitions. [2023-12-19 16:15:47,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-19 16:15:47,079 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 115 transitions. [2023-12-19 16:15:47,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-19 16:15:47,079 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 16:15:47,079 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 16:15:47,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-19 16:15:47,080 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 16:15:47,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 16:15:47,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1419567270, now seen corresponding path program 1 times [2023-12-19 16:15:47,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 16:15:47,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390580578] [2023-12-19 16:15:47,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 16:15:47,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 16:15:47,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:47,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 16:15:47,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:47,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 16:15:47,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:47,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 16:15:47,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:47,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 16:15:47,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:47,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 16:15:47,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:47,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 16:15:47,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:47,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 16:15:47,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:47,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 16:15:47,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:47,431 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-19 16:15:47,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 16:15:47,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390580578] [2023-12-19 16:15:47,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390580578] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 16:15:47,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 16:15:47,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 16:15:47,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976204842] [2023-12-19 16:15:47,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 16:15:47,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 16:15:47,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 16:15:47,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 16:15:47,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-19 16:15:47,432 INFO L87 Difference]: Start difference. First operand 84 states and 115 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-19 16:15:47,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 16:15:47,760 INFO L93 Difference]: Finished difference Result 235 states and 319 transitions. [2023-12-19 16:15:47,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 16:15:47,761 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 72 [2023-12-19 16:15:47,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 16:15:47,762 INFO L225 Difference]: With dead ends: 235 [2023-12-19 16:15:47,762 INFO L226 Difference]: Without dead ends: 152 [2023-12-19 16:15:47,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-12-19 16:15:47,763 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 159 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 16:15:47,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 347 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 16:15:47,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2023-12-19 16:15:47,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 87. [2023-12-19 16:15:47,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 77 states have (on average 1.3246753246753247) internal successors, (102), 77 states have internal predecessors, (102), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-19 16:15:47,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 118 transitions. [2023-12-19 16:15:47,777 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 118 transitions. Word has length 72 [2023-12-19 16:15:47,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 16:15:47,777 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 118 transitions. [2023-12-19 16:15:47,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-19 16:15:47,777 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 118 transitions. [2023-12-19 16:15:47,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-19 16:15:47,778 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 16:15:47,778 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 16:15:47,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-19 16:15:47,779 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 16:15:47,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 16:15:47,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1469107187, now seen corresponding path program 1 times [2023-12-19 16:15:47,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 16:15:47,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72989372] [2023-12-19 16:15:47,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 16:15:47,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 16:15:47,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:47,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 16:15:47,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:47,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 16:15:47,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:47,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 16:15:47,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:47,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 16:15:47,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:47,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 16:15:47,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:47,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 16:15:47,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:47,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 16:15:47,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:47,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 16:15:47,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:47,883 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-19 16:15:47,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 16:15:47,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72989372] [2023-12-19 16:15:47,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72989372] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 16:15:47,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 16:15:47,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 16:15:47,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105940755] [2023-12-19 16:15:47,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 16:15:47,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 16:15:47,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 16:15:47,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 16:15:47,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 16:15:47,885 INFO L87 Difference]: Start difference. First operand 87 states and 118 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-19 16:15:47,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 16:15:47,959 INFO L93 Difference]: Finished difference Result 203 states and 276 transitions. [2023-12-19 16:15:47,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 16:15:47,959 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 74 [2023-12-19 16:15:47,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 16:15:47,962 INFO L225 Difference]: With dead ends: 203 [2023-12-19 16:15:47,962 INFO L226 Difference]: Without dead ends: 117 [2023-12-19 16:15:47,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-19 16:15:47,963 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 80 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 16:15:47,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 410 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 16:15:47,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-12-19 16:15:47,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 88. [2023-12-19 16:15:47,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 78 states have (on average 1.3205128205128205) internal successors, (103), 78 states have internal predecessors, (103), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-19 16:15:47,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 119 transitions. [2023-12-19 16:15:47,976 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 119 transitions. Word has length 74 [2023-12-19 16:15:47,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 16:15:47,977 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 119 transitions. [2023-12-19 16:15:47,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-19 16:15:47,977 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 119 transitions. [2023-12-19 16:15:47,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-19 16:15:47,978 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 16:15:47,978 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 16:15:47,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-19 16:15:47,978 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 16:15:47,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 16:15:47,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1379444614, now seen corresponding path program 1 times [2023-12-19 16:15:47,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 16:15:47,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299001260] [2023-12-19 16:15:47,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 16:15:47,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 16:15:48,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:49,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 16:15:49,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:49,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 16:15:49,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:49,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 16:15:49,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:49,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 16:15:49,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:49,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 16:15:49,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:49,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 16:15:49,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:49,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 16:15:49,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:49,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 16:15:49,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:49,283 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-12-19 16:15:49,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 16:15:49,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299001260] [2023-12-19 16:15:49,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299001260] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 16:15:49,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082073884] [2023-12-19 16:15:49,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 16:15:49,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 16:15:49,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 16:15:49,290 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 16:15:49,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 16:15:49,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:15:49,488 INFO L262 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 73 conjunts are in the unsatisfiable core [2023-12-19 16:15:49,500 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 16:15:50,587 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 15 treesize of output 1 [2023-12-19 16:15:51,431 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 25 treesize of output 13 [2023-12-19 16:15:52,326 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 35 [2023-12-19 16:15:52,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 16:15:52,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 16:15:52,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 16:15:52,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 16:15:52,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 16:15:52,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 16:15:52,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 43 [2023-12-19 16:15:52,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 16:15:52,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 16:15:52,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 16:15:52,543 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 50 [2023-12-19 16:15:52,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 16:15:52,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 16:15:52,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 16:15:52,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 16:15:52,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 16:15:52,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 16:15:52,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 16:15:52,674 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 60 [2023-12-19 16:15:53,395 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 16 proven. 51 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-12-19 16:15:53,395 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 16:16:47,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082073884] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 16:16:47,113 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 16:16:47,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17] total 30 [2023-12-19 16:16:47,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730450167] [2023-12-19 16:16:47,113 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 16:16:47,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-19 16:16:47,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 16:16:47,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-19 16:16:47,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=1575, Unknown=6, NotChecked=0, Total=1722 [2023-12-19 16:16:47,115 INFO L87 Difference]: Start difference. First operand 88 states and 119 transitions. Second operand has 30 states, 27 states have (on average 2.888888888888889) internal successors, (78), 27 states have internal predecessors, (78), 7 states have call successors, (16), 4 states have call predecessors, (16), 6 states have return successors, (16), 6 states have call predecessors, (16), 7 states have call successors, (16) [2023-12-19 16:16:53,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 16:16:53,618 INFO L93 Difference]: Finished difference Result 730 states and 941 transitions. [2023-12-19 16:16:53,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-12-19 16:16:53,619 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 27 states have (on average 2.888888888888889) internal successors, (78), 27 states have internal predecessors, (78), 7 states have call successors, (16), 4 states have call predecessors, (16), 6 states have return successors, (16), 6 states have call predecessors, (16), 7 states have call successors, (16) Word has length 74 [2023-12-19 16:16:53,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 16:16:53,621 INFO L225 Difference]: With dead ends: 730 [2023-12-19 16:16:53,622 INFO L226 Difference]: Without dead ends: 643 [2023-12-19 16:16:53,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 90 SyntacticMatches, 2 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1489 ImplicationChecksByTransitivity, 59.1s TimeCoverageRelationStatistics Valid=969, Invalid=6165, Unknown=6, NotChecked=0, Total=7140 [2023-12-19 16:16:53,625 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 2710 mSDsluCounter, 1206 mSDsCounter, 0 mSdLazyCounter, 1706 mSolverCounterSat, 262 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2715 SdHoareTripleChecker+Valid, 1273 SdHoareTripleChecker+Invalid, 1968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 1706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-19 16:16:53,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2715 Valid, 1273 Invalid, 1968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [262 Valid, 1706 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-19 16:16:53,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2023-12-19 16:16:53,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 278. [2023-12-19 16:16:53,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 251 states have (on average 1.2868525896414342) internal successors, (323), 252 states have internal predecessors, (323), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-19 16:16:53,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 363 transitions. [2023-12-19 16:16:53,656 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 363 transitions. Word has length 74 [2023-12-19 16:16:53,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 16:16:53,656 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 363 transitions. [2023-12-19 16:16:53,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 27 states have (on average 2.888888888888889) internal successors, (78), 27 states have internal predecessors, (78), 7 states have call successors, (16), 4 states have call predecessors, (16), 6 states have return successors, (16), 6 states have call predecessors, (16), 7 states have call successors, (16) [2023-12-19 16:16:53,656 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 363 transitions. [2023-12-19 16:16:53,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-19 16:16:53,657 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 16:16:53,657 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 16:16:53,664 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-19 16:16:53,866 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,SelfDestructingSolverStorable11 [2023-12-19 16:16:53,866 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 16:16:53,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 16:16:53,867 INFO L85 PathProgramCache]: Analyzing trace with hash 810721787, now seen corresponding path program 1 times [2023-12-19 16:16:53,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 16:16:53,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201530968] [2023-12-19 16:16:53,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 16:16:53,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 16:16:53,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:16:54,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 16:16:54,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:16:54,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 16:16:54,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:16:54,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 16:16:54,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:16:54,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 16:16:54,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:16:54,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 16:16:54,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:16:54,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 16:16:54,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:16:54,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 16:16:54,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:16:54,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 16:16:54,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:16:54,143 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-19 16:16:54,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 16:16:54,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201530968] [2023-12-19 16:16:54,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201530968] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 16:16:54,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 16:16:54,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 16:16:54,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933177825] [2023-12-19 16:16:54,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 16:16:54,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 16:16:54,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 16:16:54,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 16:16:54,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-19 16:16:54,145 INFO L87 Difference]: Start difference. First operand 278 states and 363 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-19 16:16:54,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 16:16:54,468 INFO L93 Difference]: Finished difference Result 700 states and 910 transitions. [2023-12-19 16:16:54,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 16:16:54,469 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 74 [2023-12-19 16:16:54,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 16:16:54,472 INFO L225 Difference]: With dead ends: 700 [2023-12-19 16:16:54,472 INFO L226 Difference]: Without dead ends: 417 [2023-12-19 16:16:54,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-12-19 16:16:54,474 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 166 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 16:16:54,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 291 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 16:16:54,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2023-12-19 16:16:54,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 275. [2023-12-19 16:16:54,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 248 states have (on average 1.2701612903225807) internal successors, (315), 249 states have internal predecessors, (315), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-19 16:16:54,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 355 transitions. [2023-12-19 16:16:54,505 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 355 transitions. Word has length 74 [2023-12-19 16:16:54,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 16:16:54,506 INFO L495 AbstractCegarLoop]: Abstraction has 275 states and 355 transitions. [2023-12-19 16:16:54,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-19 16:16:54,506 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 355 transitions. [2023-12-19 16:16:54,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-19 16:16:54,507 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 16:16:54,507 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 16:16:54,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-19 16:16:54,507 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 16:16:54,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 16:16:54,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1104155446, now seen corresponding path program 1 times [2023-12-19 16:16:54,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 16:16:54,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203169012] [2023-12-19 16:16:54,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 16:16:54,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 16:16:54,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:16:54,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 16:16:54,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:16:54,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 16:16:54,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:16:54,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 16:16:54,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:16:54,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 16:16:54,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:16:54,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 16:16:54,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:16:54,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 16:16:54,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:16:54,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 16:16:54,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:16:54,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 16:16:54,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:16:54,860 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-19 16:16:54,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 16:16:54,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203169012] [2023-12-19 16:16:54,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203169012] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 16:16:54,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 16:16:54,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 16:16:54,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185632986] [2023-12-19 16:16:54,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 16:16:54,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 16:16:54,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 16:16:54,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 16:16:54,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-19 16:16:54,862 INFO L87 Difference]: Start difference. First operand 275 states and 355 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-19 16:16:55,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 16:16:55,237 INFO L93 Difference]: Finished difference Result 736 states and 954 transitions. [2023-12-19 16:16:55,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 16:16:55,238 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 74 [2023-12-19 16:16:55,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 16:16:55,239 INFO L225 Difference]: With dead ends: 736 [2023-12-19 16:16:55,239 INFO L226 Difference]: Without dead ends: 462 [2023-12-19 16:16:55,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2023-12-19 16:16:55,240 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 245 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 16:16:55,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 270 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 16:16:55,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2023-12-19 16:16:55,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 295. [2023-12-19 16:16:55,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 268 states have (on average 1.2649253731343284) internal successors, (339), 269 states have internal predecessors, (339), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-19 16:16:55,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 379 transitions. [2023-12-19 16:16:55,262 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 379 transitions. Word has length 74 [2023-12-19 16:16:55,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 16:16:55,262 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 379 transitions. [2023-12-19 16:16:55,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-19 16:16:55,262 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 379 transitions. [2023-12-19 16:16:55,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-19 16:16:55,263 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 16:16:55,263 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 16:16:55,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-19 16:16:55,263 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 16:16:55,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 16:16:55,263 INFO L85 PathProgramCache]: Analyzing trace with hash -93038196, now seen corresponding path program 1 times [2023-12-19 16:16:55,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 16:16:55,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824537793] [2023-12-19 16:16:55,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 16:16:55,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 16:16:55,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:16:56,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 16:16:56,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:16:56,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 16:16:56,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:16:56,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 16:16:56,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:16:56,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 16:16:56,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:16:56,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 16:16:56,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:16:56,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 16:16:56,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:16:56,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 16:16:56,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:16:56,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 16:16:56,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:16:56,462 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-12-19 16:16:56,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 16:16:56,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824537793] [2023-12-19 16:16:56,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824537793] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 16:16:56,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464044509] [2023-12-19 16:16:56,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 16:16:56,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 16:16:56,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 16:16:56,477 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 16:16:56,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 16:16:56,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:16:56,658 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 45 conjunts are in the unsatisfiable core [2023-12-19 16:16:56,667 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 16:16:57,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 16:16:57,389 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 73 treesize of output 49 [2023-12-19 16:16:57,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 16:16:57,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 16:16:57,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 16:16:57,494 INFO L349 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2023-12-19 16:16:57,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 73 treesize of output 62 [2023-12-19 16:16:57,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 16:16:57,850 INFO L349 Elim1Store]: treesize reduction 8, result has 89.0 percent of original size [2023-12-19 16:16:57,851 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 102 treesize of output 122 [2023-12-19 16:16:58,225 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-12-19 16:16:58,225 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 16:17:40,604 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 16:17:40,605 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 2393 treesize of output 1958 [2023-12-19 16:17:46,701 INFO L349 Elim1Store]: treesize reduction 57, result has 1.7 percent of original size [2023-12-19 16:17:46,701 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 1466 treesize of output 1 [2023-12-19 16:17:54,144 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-19 16:17:54,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464044509] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 16:17:54,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-19 16:17:54,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [13, 12] total 31 [2023-12-19 16:17:54,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033188322] [2023-12-19 16:17:54,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 16:17:54,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 16:17:54,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 16:17:54,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 16:17:54,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=836, Unknown=6, NotChecked=0, Total=930 [2023-12-19 16:17:54,146 INFO L87 Difference]: Start difference. First operand 295 states and 379 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-19 16:18:11,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 16:18:11,846 INFO L93 Difference]: Finished difference Result 677 states and 871 transitions. [2023-12-19 16:18:11,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 16:18:11,847 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 74 [2023-12-19 16:18:11,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 16:18:11,848 INFO L225 Difference]: With dead ends: 677 [2023-12-19 16:18:11,848 INFO L226 Difference]: Without dead ends: 383 [2023-12-19 16:18:11,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 143 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 64.2s TimeCoverageRelationStatistics Valid=177, Invalid=1375, Unknown=8, NotChecked=0, Total=1560 [2023-12-19 16:18:11,850 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 363 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-19 16:18:11,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 511 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-19 16:18:11,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2023-12-19 16:18:11,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 298. [2023-12-19 16:18:11,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 271 states have (on average 1.2619926199261993) internal successors, (342), 272 states have internal predecessors, (342), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-19 16:18:11,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 382 transitions. [2023-12-19 16:18:11,871 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 382 transitions. Word has length 74 [2023-12-19 16:18:11,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 16:18:11,871 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 382 transitions. [2023-12-19 16:18:11,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-19 16:18:11,871 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 382 transitions. [2023-12-19 16:18:11,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-19 16:18:11,871 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 16:18:11,872 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 16:18:11,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 16:18:12,083 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,SelfDestructingSolverStorable14 [2023-12-19 16:18:12,084 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 16:18:12,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 16:18:12,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1829541873, now seen corresponding path program 1 times [2023-12-19 16:18:12,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 16:18:12,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737828530] [2023-12-19 16:18:12,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 16:18:12,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 16:18:12,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:12,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 16:18:12,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:12,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 16:18:12,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:12,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 16:18:12,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:12,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 16:18:12,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:12,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 16:18:12,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:12,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 16:18:12,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:12,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 16:18:12,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:12,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 16:18:12,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:12,406 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-19 16:18:12,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 16:18:12,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737828530] [2023-12-19 16:18:12,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737828530] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 16:18:12,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 16:18:12,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 16:18:12,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113079714] [2023-12-19 16:18:12,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 16:18:12,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 16:18:12,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 16:18:12,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 16:18:12,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-19 16:18:12,408 INFO L87 Difference]: Start difference. First operand 298 states and 382 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-19 16:18:12,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 16:18:12,705 INFO L93 Difference]: Finished difference Result 545 states and 700 transitions. [2023-12-19 16:18:12,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 16:18:12,706 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 74 [2023-12-19 16:18:12,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 16:18:12,707 INFO L225 Difference]: With dead ends: 545 [2023-12-19 16:18:12,708 INFO L226 Difference]: Without dead ends: 375 [2023-12-19 16:18:12,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-19 16:18:12,709 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 178 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 16:18:12,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 216 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 16:18:12,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2023-12-19 16:18:12,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 291. [2023-12-19 16:18:12,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 264 states have (on average 1.25) internal successors, (330), 265 states have internal predecessors, (330), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-19 16:18:12,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 370 transitions. [2023-12-19 16:18:12,752 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 370 transitions. Word has length 74 [2023-12-19 16:18:12,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 16:18:12,754 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 370 transitions. [2023-12-19 16:18:12,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-19 16:18:12,754 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 370 transitions. [2023-12-19 16:18:12,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-19 16:18:12,757 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 16:18:12,757 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 16:18:12,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-19 16:18:12,757 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 16:18:12,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 16:18:12,757 INFO L85 PathProgramCache]: Analyzing trace with hash -681453620, now seen corresponding path program 1 times [2023-12-19 16:18:12,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 16:18:12,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578243904] [2023-12-19 16:18:12,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 16:18:12,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 16:18:12,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:13,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 16:18:13,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:13,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 16:18:13,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:13,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 16:18:13,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:13,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 16:18:13,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:13,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 16:18:13,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:14,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 16:18:14,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:14,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 16:18:14,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:14,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 16:18:14,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:14,060 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-12-19 16:18:14,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 16:18:14,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578243904] [2023-12-19 16:18:14,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578243904] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 16:18:14,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127803584] [2023-12-19 16:18:14,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 16:18:14,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 16:18:14,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 16:18:14,061 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 16:18:14,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 16:18:14,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:14,181 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-19 16:18:14,183 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 16:18:14,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 16:18:14,797 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 65 treesize of output 41 [2023-12-19 16:18:14,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 16:18:14,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 16:18:14,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 16:18:14,873 INFO L349 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2023-12-19 16:18:14,874 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 54 [2023-12-19 16:18:15,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 16:18:15,163 INFO L349 Elim1Store]: treesize reduction 8, result has 89.0 percent of original size [2023-12-19 16:18:15,164 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 92 treesize of output 112 [2023-12-19 16:18:15,440 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-12-19 16:18:15,441 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 16:18:32,845 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 16:18:32,846 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 2564 treesize of output 2201 [2023-12-19 16:18:33,604 INFO L349 Elim1Store]: treesize reduction 57, result has 1.7 percent of original size [2023-12-19 16:18:33,605 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 2510 treesize of output 1 [2023-12-19 16:18:33,838 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-19 16:18:33,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127803584] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 16:18:33,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-19 16:18:33,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [12, 12] total 29 [2023-12-19 16:18:33,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825183897] [2023-12-19 16:18:33,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 16:18:33,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-19 16:18:33,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 16:18:33,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-19 16:18:33,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=729, Unknown=3, NotChecked=0, Total=812 [2023-12-19 16:18:33,840 INFO L87 Difference]: Start difference. First operand 291 states and 370 transitions. Second operand has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-19 16:18:44,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 16:18:44,918 INFO L93 Difference]: Finished difference Result 735 states and 941 transitions. [2023-12-19 16:18:44,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 16:18:44,919 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 74 [2023-12-19 16:18:44,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 16:18:44,921 INFO L225 Difference]: With dead ends: 735 [2023-12-19 16:18:44,921 INFO L226 Difference]: Without dead ends: 445 [2023-12-19 16:18:44,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 146 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 27.5s TimeCoverageRelationStatistics Valid=182, Invalid=1375, Unknown=3, NotChecked=0, Total=1560 [2023-12-19 16:18:44,922 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 343 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-19 16:18:44,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 536 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-19 16:18:44,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2023-12-19 16:18:44,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 291. [2023-12-19 16:18:44,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 264 states have (on average 1.25) internal successors, (330), 265 states have internal predecessors, (330), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-19 16:18:44,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 370 transitions. [2023-12-19 16:18:44,943 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 370 transitions. Word has length 74 [2023-12-19 16:18:44,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 16:18:44,944 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 370 transitions. [2023-12-19 16:18:44,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-19 16:18:44,944 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 370 transitions. [2023-12-19 16:18:44,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-19 16:18:44,944 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 16:18:44,944 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 16:18:44,956 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 16:18:45,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 16:18:45,150 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 16:18:45,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 16:18:45,150 INFO L85 PathProgramCache]: Analyzing trace with hash 329663630, now seen corresponding path program 1 times [2023-12-19 16:18:45,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 16:18:45,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346212541] [2023-12-19 16:18:45,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 16:18:45,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 16:18:45,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:45,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 16:18:45,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:45,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 16:18:45,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:45,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 16:18:45,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:45,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 16:18:45,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:45,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 16:18:45,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:45,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 16:18:45,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:45,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 16:18:45,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:45,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 16:18:45,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:45,398 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-19 16:18:45,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 16:18:45,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346212541] [2023-12-19 16:18:45,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346212541] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 16:18:45,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 16:18:45,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 16:18:45,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472382738] [2023-12-19 16:18:45,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 16:18:45,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 16:18:45,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 16:18:45,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 16:18:45,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-19 16:18:45,401 INFO L87 Difference]: Start difference. First operand 291 states and 370 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-19 16:18:45,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 16:18:45,755 INFO L93 Difference]: Finished difference Result 656 states and 834 transitions. [2023-12-19 16:18:45,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 16:18:45,756 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 74 [2023-12-19 16:18:45,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 16:18:45,758 INFO L225 Difference]: With dead ends: 656 [2023-12-19 16:18:45,758 INFO L226 Difference]: Without dead ends: 366 [2023-12-19 16:18:45,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2023-12-19 16:18:45,759 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 152 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 16:18:45,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 308 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 16:18:45,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2023-12-19 16:18:45,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 279. [2023-12-19 16:18:45,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 252 states have (on average 1.2380952380952381) internal successors, (312), 253 states have internal predecessors, (312), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-19 16:18:45,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 352 transitions. [2023-12-19 16:18:45,782 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 352 transitions. Word has length 74 [2023-12-19 16:18:45,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 16:18:45,782 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 352 transitions. [2023-12-19 16:18:45,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-19 16:18:45,782 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 352 transitions. [2023-12-19 16:18:45,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-19 16:18:45,783 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 16:18:45,783 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 16:18:45,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-19 16:18:45,783 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 16:18:45,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 16:18:45,784 INFO L85 PathProgramCache]: Analyzing trace with hash 92809267, now seen corresponding path program 1 times [2023-12-19 16:18:45,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 16:18:45,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119864448] [2023-12-19 16:18:45,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 16:18:45,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 16:18:45,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:45,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 16:18:45,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:45,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 16:18:45,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:45,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 16:18:45,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:45,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 16:18:45,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:45,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 16:18:45,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:45,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 16:18:45,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:45,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 16:18:45,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:45,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 16:18:45,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:45,868 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-19 16:18:45,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 16:18:45,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119864448] [2023-12-19 16:18:45,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119864448] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 16:18:45,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 16:18:45,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 16:18:45,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678376122] [2023-12-19 16:18:45,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 16:18:45,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 16:18:45,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 16:18:45,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 16:18:45,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 16:18:45,870 INFO L87 Difference]: Start difference. First operand 279 states and 352 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-19 16:18:46,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 16:18:46,060 INFO L93 Difference]: Finished difference Result 673 states and 847 transitions. [2023-12-19 16:18:46,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 16:18:46,060 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 75 [2023-12-19 16:18:46,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 16:18:46,062 INFO L225 Difference]: With dead ends: 673 [2023-12-19 16:18:46,062 INFO L226 Difference]: Without dead ends: 395 [2023-12-19 16:18:46,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-19 16:18:46,063 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 67 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 16:18:46,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 305 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 16:18:46,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2023-12-19 16:18:46,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 295. [2023-12-19 16:18:46,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 268 states have (on average 1.2201492537313432) internal successors, (327), 269 states have internal predecessors, (327), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-19 16:18:46,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 367 transitions. [2023-12-19 16:18:46,085 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 367 transitions. Word has length 75 [2023-12-19 16:18:46,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 16:18:46,086 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 367 transitions. [2023-12-19 16:18:46,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-19 16:18:46,086 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 367 transitions. [2023-12-19 16:18:46,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-19 16:18:46,086 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 16:18:46,086 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 16:18:46,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-19 16:18:46,086 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 16:18:46,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 16:18:46,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1012118072, now seen corresponding path program 1 times [2023-12-19 16:18:46,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 16:18:46,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43231903] [2023-12-19 16:18:46,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 16:18:46,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 16:18:46,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:46,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 16:18:46,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:46,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 16:18:46,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:46,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 16:18:46,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:46,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 16:18:46,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:46,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 16:18:46,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:46,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 16:18:46,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:46,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 16:18:46,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:46,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 16:18:46,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:46,152 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-19 16:18:46,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 16:18:46,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43231903] [2023-12-19 16:18:46,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43231903] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 16:18:46,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 16:18:46,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 16:18:46,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124719372] [2023-12-19 16:18:46,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 16:18:46,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 16:18:46,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 16:18:46,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 16:18:46,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 16:18:46,154 INFO L87 Difference]: Start difference. First operand 295 states and 367 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-19 16:18:46,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 16:18:46,279 INFO L93 Difference]: Finished difference Result 625 states and 778 transitions. [2023-12-19 16:18:46,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 16:18:46,280 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 76 [2023-12-19 16:18:46,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 16:18:46,283 INFO L225 Difference]: With dead ends: 625 [2023-12-19 16:18:46,283 INFO L226 Difference]: Without dead ends: 331 [2023-12-19 16:18:46,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-19 16:18:46,284 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 65 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 16:18:46,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 228 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 16:18:46,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2023-12-19 16:18:46,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 279. [2023-12-19 16:18:46,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 252 states have (on average 1.1984126984126984) internal successors, (302), 253 states have internal predecessors, (302), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-19 16:18:46,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 342 transitions. [2023-12-19 16:18:46,311 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 342 transitions. Word has length 76 [2023-12-19 16:18:46,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 16:18:46,311 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 342 transitions. [2023-12-19 16:18:46,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-19 16:18:46,311 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 342 transitions. [2023-12-19 16:18:46,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-19 16:18:46,312 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 16:18:46,312 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 16:18:46,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-19 16:18:46,312 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 16:18:46,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 16:18:46,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1073054539, now seen corresponding path program 1 times [2023-12-19 16:18:46,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 16:18:46,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847989399] [2023-12-19 16:18:46,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 16:18:46,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 16:18:46,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:46,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 16:18:46,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:46,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 16:18:46,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:47,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 16:18:47,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:47,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 16:18:47,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:47,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 16:18:47,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:47,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 16:18:47,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:47,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 16:18:47,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:47,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 16:18:47,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:47,027 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-19 16:18:47,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 16:18:47,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847989399] [2023-12-19 16:18:47,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847989399] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 16:18:47,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 16:18:47,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 16:18:47,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998672527] [2023-12-19 16:18:47,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 16:18:47,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 16:18:47,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 16:18:47,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 16:18:47,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-19 16:18:47,028 INFO L87 Difference]: Start difference. First operand 279 states and 342 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-19 16:18:47,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 16:18:47,581 INFO L93 Difference]: Finished difference Result 745 states and 904 transitions. [2023-12-19 16:18:47,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 16:18:47,588 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 76 [2023-12-19 16:18:47,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 16:18:47,591 INFO L225 Difference]: With dead ends: 745 [2023-12-19 16:18:47,591 INFO L226 Difference]: Without dead ends: 436 [2023-12-19 16:18:47,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2023-12-19 16:18:47,593 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 277 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 16:18:47,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 238 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 16:18:47,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2023-12-19 16:18:47,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 378. [2023-12-19 16:18:47,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 351 states have (on average 1.188034188034188) internal successors, (417), 352 states have internal predecessors, (417), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-19 16:18:47,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 457 transitions. [2023-12-19 16:18:47,620 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 457 transitions. Word has length 76 [2023-12-19 16:18:47,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 16:18:47,621 INFO L495 AbstractCegarLoop]: Abstraction has 378 states and 457 transitions. [2023-12-19 16:18:47,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-19 16:18:47,621 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 457 transitions. [2023-12-19 16:18:47,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-19 16:18:47,621 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 16:18:47,621 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 16:18:47,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-19 16:18:47,622 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 16:18:47,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 16:18:47,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1800265925, now seen corresponding path program 1 times [2023-12-19 16:18:47,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 16:18:47,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070273648] [2023-12-19 16:18:47,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 16:18:47,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 16:18:47,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:47,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 16:18:47,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:47,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 16:18:47,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:47,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 16:18:47,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:47,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 16:18:47,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:47,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 16:18:47,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:47,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 16:18:47,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:47,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 16:18:47,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:47,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 16:18:47,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:47,915 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-19 16:18:47,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 16:18:47,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070273648] [2023-12-19 16:18:47,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070273648] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 16:18:47,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 16:18:47,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 16:18:47,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542595657] [2023-12-19 16:18:47,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 16:18:47,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 16:18:47,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 16:18:47,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 16:18:47,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-19 16:18:47,916 INFO L87 Difference]: Start difference. First operand 378 states and 457 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-19 16:18:48,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 16:18:48,148 INFO L93 Difference]: Finished difference Result 641 states and 778 transitions. [2023-12-19 16:18:48,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 16:18:48,149 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 76 [2023-12-19 16:18:48,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 16:18:48,150 INFO L225 Difference]: With dead ends: 641 [2023-12-19 16:18:48,151 INFO L226 Difference]: Without dead ends: 418 [2023-12-19 16:18:48,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-12-19 16:18:48,152 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 196 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 16:18:48,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 175 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 16:18:48,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2023-12-19 16:18:48,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 378. [2023-12-19 16:18:48,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 351 states have (on average 1.1851851851851851) internal successors, (416), 352 states have internal predecessors, (416), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-19 16:18:48,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 456 transitions. [2023-12-19 16:18:48,177 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 456 transitions. Word has length 76 [2023-12-19 16:18:48,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 16:18:48,177 INFO L495 AbstractCegarLoop]: Abstraction has 378 states and 456 transitions. [2023-12-19 16:18:48,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-19 16:18:48,177 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 456 transitions. [2023-12-19 16:18:48,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-19 16:18:48,178 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 16:18:48,178 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 16:18:48,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-19 16:18:48,178 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 16:18:48,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 16:18:48,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1491109967, now seen corresponding path program 1 times [2023-12-19 16:18:48,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 16:18:48,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916891761] [2023-12-19 16:18:48,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 16:18:48,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 16:18:48,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:48,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 16:18:48,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:48,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 16:18:48,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:48,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 16:18:48,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:48,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 16:18:48,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:48,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 16:18:48,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:48,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 16:18:48,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:48,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 16:18:48,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:48,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 16:18:48,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:48,279 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-19 16:18:48,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 16:18:48,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916891761] [2023-12-19 16:18:48,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916891761] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 16:18:48,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 16:18:48,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 16:18:48,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289992266] [2023-12-19 16:18:48,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 16:18:48,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 16:18:48,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 16:18:48,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 16:18:48,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 16:18:48,280 INFO L87 Difference]: Start difference. First operand 378 states and 456 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-19 16:18:48,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 16:18:48,461 INFO L93 Difference]: Finished difference Result 886 states and 1072 transitions. [2023-12-19 16:18:48,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 16:18:48,462 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 77 [2023-12-19 16:18:48,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 16:18:48,463 INFO L225 Difference]: With dead ends: 886 [2023-12-19 16:18:48,463 INFO L226 Difference]: Without dead ends: 509 [2023-12-19 16:18:48,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-19 16:18:48,465 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 62 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 16:18:48,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 257 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 16:18:48,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2023-12-19 16:18:48,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 410. [2023-12-19 16:18:48,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 383 states have (on average 1.1697127937336815) internal successors, (448), 384 states have internal predecessors, (448), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-19 16:18:48,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 488 transitions. [2023-12-19 16:18:48,490 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 488 transitions. Word has length 77 [2023-12-19 16:18:48,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 16:18:48,490 INFO L495 AbstractCegarLoop]: Abstraction has 410 states and 488 transitions. [2023-12-19 16:18:48,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-19 16:18:48,491 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 488 transitions. [2023-12-19 16:18:48,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-19 16:18:48,491 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 16:18:48,491 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 16:18:48,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-19 16:18:48,491 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 16:18:48,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 16:18:48,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1989332603, now seen corresponding path program 1 times [2023-12-19 16:18:48,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 16:18:48,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102413742] [2023-12-19 16:18:48,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 16:18:48,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 16:18:48,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:48,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 16:18:48,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:48,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 16:18:48,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:48,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 16:18:48,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:48,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 16:18:48,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:48,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 16:18:48,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:48,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 16:18:48,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:48,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 16:18:48,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:48,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 16:18:48,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:48,587 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-19 16:18:48,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 16:18:48,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102413742] [2023-12-19 16:18:48,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102413742] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 16:18:48,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 16:18:48,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 16:18:48,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562575490] [2023-12-19 16:18:48,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 16:18:48,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 16:18:48,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 16:18:48,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 16:18:48,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 16:18:48,588 INFO L87 Difference]: Start difference. First operand 410 states and 488 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-19 16:18:48,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 16:18:48,754 INFO L93 Difference]: Finished difference Result 915 states and 1091 transitions. [2023-12-19 16:18:48,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 16:18:48,755 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 77 [2023-12-19 16:18:48,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 16:18:48,756 INFO L225 Difference]: With dead ends: 915 [2023-12-19 16:18:48,756 INFO L226 Difference]: Without dead ends: 494 [2023-12-19 16:18:48,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-19 16:18:48,760 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 77 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 16:18:48,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 308 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 16:18:48,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2023-12-19 16:18:48,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 398. [2023-12-19 16:18:48,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 371 states have (on average 1.1644204851752022) internal successors, (432), 372 states have internal predecessors, (432), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-19 16:18:48,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 472 transitions. [2023-12-19 16:18:48,787 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 472 transitions. Word has length 77 [2023-12-19 16:18:48,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 16:18:48,788 INFO L495 AbstractCegarLoop]: Abstraction has 398 states and 472 transitions. [2023-12-19 16:18:48,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-19 16:18:48,788 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 472 transitions. [2023-12-19 16:18:48,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-19 16:18:48,788 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 16:18:48,788 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 16:18:48,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-19 16:18:48,789 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 16:18:48,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 16:18:48,789 INFO L85 PathProgramCache]: Analyzing trace with hash 2145573999, now seen corresponding path program 1 times [2023-12-19 16:18:48,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 16:18:48,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256639021] [2023-12-19 16:18:48,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 16:18:48,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 16:18:48,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:50,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 16:18:50,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:50,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 16:18:50,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:50,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 16:18:50,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:50,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 16:18:50,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:50,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 16:18:50,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:50,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 16:18:50,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:50,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 16:18:50,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:50,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 16:18:50,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:50,549 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 24 proven. 12 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-12-19 16:18:50,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 16:18:50,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256639021] [2023-12-19 16:18:50,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256639021] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 16:18:50,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472220175] [2023-12-19 16:18:50,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 16:18:50,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 16:18:50,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 16:18:50,551 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 16:18:50,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 16:18:50,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:18:50,689 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 82 conjunts are in the unsatisfiable core [2023-12-19 16:18:50,696 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 16:18:51,462 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 15 treesize of output 1 [2023-12-19 16:18:52,084 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 23 treesize of output 11 [2023-12-19 16:18:53,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23 [2023-12-19 16:18:53,808 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 45 [2023-12-19 16:18:53,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 16:18:53,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 16:18:53,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 16:18:53,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 16:18:53,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 16:18:53,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 15 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 53 [2023-12-19 16:18:53,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 16:18:53,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 16:18:53,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 16:18:53,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 16:18:53,995 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 60 [2023-12-19 16:18:54,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 16:18:54,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 16:18:54,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 16:18:54,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 16:18:54,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 16:18:54,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 16:18:54,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 16:18:54,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 16:18:54,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 16:18:54,121 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 65 [2023-12-19 16:18:54,269 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 42 proven. 51 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-19 16:18:54,269 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 16:19:07,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472220175] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 16:19:07,421 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 16:19:07,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16] total 28 [2023-12-19 16:19:07,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529418967] [2023-12-19 16:19:07,421 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 16:19:07,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-19 16:19:07,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 16:19:07,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-19 16:19:07,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1424, Unknown=3, NotChecked=0, Total=1560 [2023-12-19 16:19:07,422 INFO L87 Difference]: Start difference. First operand 398 states and 472 transitions. Second operand has 28 states, 23 states have (on average 3.217391304347826) internal successors, (74), 25 states have internal predecessors, (74), 11 states have call successors, (16), 5 states have call predecessors, (16), 7 states have return successors, (16), 8 states have call predecessors, (16), 11 states have call successors, (16) [2023-12-19 16:19:12,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 16:19:12,550 INFO L93 Difference]: Finished difference Result 954 states and 1136 transitions. [2023-12-19 16:19:12,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-12-19 16:19:12,554 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 23 states have (on average 3.217391304347826) internal successors, (74), 25 states have internal predecessors, (74), 11 states have call successors, (16), 5 states have call predecessors, (16), 7 states have return successors, (16), 8 states have call predecessors, (16), 11 states have call successors, (16) Word has length 77 [2023-12-19 16:19:12,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 16:19:12,556 INFO L225 Difference]: With dead ends: 954 [2023-12-19 16:19:12,556 INFO L226 Difference]: Without dead ends: 557 [2023-12-19 16:19:12,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 100 SyntacticMatches, 2 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1258 ImplicationChecksByTransitivity, 17.9s TimeCoverageRelationStatistics Valid=808, Invalid=5351, Unknown=3, NotChecked=0, Total=6162 [2023-12-19 16:19:12,558 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 1070 mSDsluCounter, 733 mSDsCounter, 0 mSdLazyCounter, 1362 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1070 SdHoareTripleChecker+Valid, 788 SdHoareTripleChecker+Invalid, 1552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 1362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-19 16:19:12,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1070 Valid, 788 Invalid, 1552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 1362 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-19 16:19:12,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2023-12-19 16:19:12,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 194. [2023-12-19 16:19:12,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 178 states have (on average 1.1685393258426966) internal successors, (208), 179 states have internal predecessors, (208), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-19 16:19:12,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 228 transitions. [2023-12-19 16:19:12,605 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 228 transitions. Word has length 77 [2023-12-19 16:19:12,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 16:19:12,605 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 228 transitions. [2023-12-19 16:19:12,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 23 states have (on average 3.217391304347826) internal successors, (74), 25 states have internal predecessors, (74), 11 states have call successors, (16), 5 states have call predecessors, (16), 7 states have return successors, (16), 8 states have call predecessors, (16), 11 states have call successors, (16) [2023-12-19 16:19:12,605 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 228 transitions. [2023-12-19 16:19:12,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-19 16:19:12,605 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 16:19:12,606 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 16:19:12,626 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-19 16:19:12,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 16:19:12,812 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 16:19:12,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 16:19:12,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1302768701, now seen corresponding path program 1 times [2023-12-19 16:19:12,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 16:19:12,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720651762] [2023-12-19 16:19:12,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 16:19:12,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 16:19:12,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:19:13,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 16:19:13,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:19:13,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 16:19:13,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:19:13,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 16:19:13,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:19:13,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 16:19:13,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:19:13,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 16:19:13,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:19:13,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 16:19:13,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:19:13,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 16:19:13,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:19:13,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 16:19:13,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:19:13,042 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-19 16:19:13,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 16:19:13,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720651762] [2023-12-19 16:19:13,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720651762] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 16:19:13,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 16:19:13,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 16:19:13,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720510461] [2023-12-19 16:19:13,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 16:19:13,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 16:19:13,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 16:19:13,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 16:19:13,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-19 16:19:13,044 INFO L87 Difference]: Start difference. First operand 194 states and 228 transitions. Second operand has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-19 16:19:13,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 16:19:13,443 INFO L93 Difference]: Finished difference Result 439 states and 523 transitions. [2023-12-19 16:19:13,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-19 16:19:13,456 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 78 [2023-12-19 16:19:13,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 16:19:13,457 INFO L225 Difference]: With dead ends: 439 [2023-12-19 16:19:13,457 INFO L226 Difference]: Without dead ends: 246 [2023-12-19 16:19:13,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=213, Invalid=489, Unknown=0, NotChecked=0, Total=702 [2023-12-19 16:19:13,458 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 332 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 16:19:13,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 415 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 16:19:13,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2023-12-19 16:19:13,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 190. [2023-12-19 16:19:13,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 174 states have (on average 1.1666666666666667) internal successors, (203), 175 states have internal predecessors, (203), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-19 16:19:13,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 223 transitions. [2023-12-19 16:19:13,497 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 223 transitions. Word has length 78 [2023-12-19 16:19:13,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 16:19:13,497 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 223 transitions. [2023-12-19 16:19:13,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-19 16:19:13,497 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 223 transitions. [2023-12-19 16:19:13,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-19 16:19:13,497 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 16:19:13,497 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 16:19:13,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-19 16:19:13,498 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 16:19:13,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 16:19:13,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1800991337, now seen corresponding path program 1 times [2023-12-19 16:19:13,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 16:19:13,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221411349] [2023-12-19 16:19:13,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 16:19:13,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 16:19:13,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:19:13,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 16:19:13,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:19:13,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 16:19:13,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:19:13,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 16:19:13,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:19:13,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 16:19:13,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:19:13,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 16:19:13,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:19:13,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 16:19:13,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:19:13,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 16:19:13,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:19:13,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 16:19:13,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:19:13,608 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-19 16:19:13,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 16:19:13,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221411349] [2023-12-19 16:19:13,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221411349] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 16:19:13,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 16:19:13,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 16:19:13,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660336966] [2023-12-19 16:19:13,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 16:19:13,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 16:19:13,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 16:19:13,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 16:19:13,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 16:19:13,609 INFO L87 Difference]: Start difference. First operand 190 states and 223 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-19 16:19:13,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 16:19:13,770 INFO L93 Difference]: Finished difference Result 406 states and 477 transitions. [2023-12-19 16:19:13,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 16:19:13,770 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 78 [2023-12-19 16:19:13,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 16:19:13,771 INFO L225 Difference]: With dead ends: 406 [2023-12-19 16:19:13,771 INFO L226 Difference]: Without dead ends: 217 [2023-12-19 16:19:13,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 16:19:13,772 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 111 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 16:19:13,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 193 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 16:19:13,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2023-12-19 16:19:13,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 190. [2023-12-19 16:19:13,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 174 states have (on average 1.1494252873563218) internal successors, (200), 175 states have internal predecessors, (200), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-19 16:19:13,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 220 transitions. [2023-12-19 16:19:13,792 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 220 transitions. Word has length 78 [2023-12-19 16:19:13,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 16:19:13,792 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 220 transitions. [2023-12-19 16:19:13,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-19 16:19:13,792 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 220 transitions. [2023-12-19 16:19:13,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-19 16:19:13,793 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 16:19:13,793 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 16:19:13,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-19 16:19:13,793 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 16:19:13,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 16:19:13,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1083913983, now seen corresponding path program 1 times [2023-12-19 16:19:13,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 16:19:13,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199627494] [2023-12-19 16:19:13,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 16:19:13,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 16:19:13,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:19:13,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 16:19:13,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:19:13,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 16:19:13,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:19:13,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 16:19:13,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:19:13,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 16:19:13,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:19:13,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 16:19:13,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:19:13,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 16:19:13,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:19:13,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 16:19:13,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:19:13,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 16:19:13,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:19:13,856 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-19 16:19:13,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 16:19:13,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199627494] [2023-12-19 16:19:13,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199627494] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 16:19:13,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 16:19:13,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 16:19:13,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551575193] [2023-12-19 16:19:13,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 16:19:13,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 16:19:13,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 16:19:13,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 16:19:13,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 16:19:13,857 INFO L87 Difference]: Start difference. First operand 190 states and 220 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-19 16:19:14,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 16:19:14,016 INFO L93 Difference]: Finished difference Result 412 states and 480 transitions. [2023-12-19 16:19:14,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 16:19:14,017 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 78 [2023-12-19 16:19:14,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 16:19:14,017 INFO L225 Difference]: With dead ends: 412 [2023-12-19 16:19:14,017 INFO L226 Difference]: Without dead ends: 223 [2023-12-19 16:19:14,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-19 16:19:14,018 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 47 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 16:19:14,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 320 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 16:19:14,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2023-12-19 16:19:14,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 178. [2023-12-19 16:19:14,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 162 states have (on average 1.1358024691358024) internal successors, (184), 163 states have internal predecessors, (184), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-19 16:19:14,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 204 transitions. [2023-12-19 16:19:14,037 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 204 transitions. Word has length 78 [2023-12-19 16:19:14,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 16:19:14,037 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 204 transitions. [2023-12-19 16:19:14,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-19 16:19:14,037 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 204 transitions. [2023-12-19 16:19:14,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-19 16:19:14,038 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 16:19:14,038 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 16:19:14,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-19 16:19:14,038 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 16:19:14,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 16:19:14,038 INFO L85 PathProgramCache]: Analyzing trace with hash -379109412, now seen corresponding path program 1 times [2023-12-19 16:19:14,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 16:19:14,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631120669] [2023-12-19 16:19:14,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 16:19:14,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 16:19:14,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:19:15,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 16:19:15,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:19:15,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 16:19:15,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:19:15,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 16:19:15,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:19:15,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 16:19:15,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:19:15,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 16:19:15,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:19:15,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 16:19:15,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:19:15,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 16:19:15,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:19:15,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 16:19:15,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:19:15,492 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-19 16:19:15,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 16:19:15,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631120669] [2023-12-19 16:19:15,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631120669] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 16:19:15,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 16:19:15,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 16:19:15,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563968340] [2023-12-19 16:19:15,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 16:19:15,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 16:19:15,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 16:19:15,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 16:19:15,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-19 16:19:15,494 INFO L87 Difference]: Start difference. First operand 178 states and 204 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-19 16:19:15,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 16:19:15,973 INFO L93 Difference]: Finished difference Result 187 states and 214 transitions. [2023-12-19 16:19:15,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 16:19:15,974 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 80 [2023-12-19 16:19:15,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 16:19:15,974 INFO L225 Difference]: With dead ends: 187 [2023-12-19 16:19:15,974 INFO L226 Difference]: Without dead ends: 185 [2023-12-19 16:19:15,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-12-19 16:19:15,975 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 154 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 16:19:15,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 128 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 16:19:15,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2023-12-19 16:19:16,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 182. [2023-12-19 16:19:16,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 166 states have (on average 1.1325301204819278) internal successors, (188), 167 states have internal predecessors, (188), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-19 16:19:16,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 208 transitions. [2023-12-19 16:19:16,003 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 208 transitions. Word has length 80 [2023-12-19 16:19:16,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 16:19:16,003 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 208 transitions. [2023-12-19 16:19:16,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-19 16:19:16,003 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 208 transitions. [2023-12-19 16:19:16,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-19 16:19:16,004 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 16:19:16,004 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 16:19:16,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-19 16:19:16,010 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 16:19:16,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 16:19:16,010 INFO L85 PathProgramCache]: Analyzing trace with hash -379049830, now seen corresponding path program 1 times [2023-12-19 16:19:16,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 16:19:16,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29941065] [2023-12-19 16:19:16,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 16:19:16,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 16:19:16,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:19:16,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 16:19:16,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:19:16,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 16:19:16,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:19:16,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 16:19:16,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:19:16,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 16:19:16,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:19:16,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 16:19:16,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:19:16,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 16:19:16,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:19:16,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 16:19:16,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:19:16,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 16:19:16,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:19:16,270 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-19 16:19:16,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 16:19:16,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29941065] [2023-12-19 16:19:16,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29941065] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 16:19:16,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 16:19:16,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 16:19:16,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277691839] [2023-12-19 16:19:16,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 16:19:16,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 16:19:16,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 16:19:16,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 16:19:16,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-19 16:19:16,271 INFO L87 Difference]: Start difference. First operand 182 states and 208 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-19 16:19:16,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 16:19:16,507 INFO L93 Difference]: Finished difference Result 364 states and 416 transitions. [2023-12-19 16:19:16,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 16:19:16,507 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 80 [2023-12-19 16:19:16,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 16:19:16,508 INFO L225 Difference]: With dead ends: 364 [2023-12-19 16:19:16,508 INFO L226 Difference]: Without dead ends: 183 [2023-12-19 16:19:16,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-19 16:19:16,509 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 120 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 16:19:16,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 153 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 16:19:16,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2023-12-19 16:19:16,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 182. [2023-12-19 16:19:16,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 166 states have (on average 1.1204819277108433) internal successors, (186), 167 states have internal predecessors, (186), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-19 16:19:16,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 206 transitions. [2023-12-19 16:19:16,549 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 206 transitions. Word has length 80 [2023-12-19 16:19:16,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 16:19:16,549 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 206 transitions. [2023-12-19 16:19:16,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-19 16:19:16,550 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 206 transitions. [2023-12-19 16:19:16,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-19 16:19:16,550 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 16:19:16,550 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 16:19:16,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-19 16:19:16,550 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 16:19:16,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 16:19:16,551 INFO L85 PathProgramCache]: Analyzing trace with hash -321791528, now seen corresponding path program 1 times [2023-12-19 16:19:16,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 16:19:16,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200026669] [2023-12-19 16:19:16,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 16:19:16,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 16:19:16,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:27:16,790 WARN L293 SmtUtils]: Spent 8.09s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 16:27:24,621 WARN L293 SmtUtils]: Spent 7.83s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 16:27:33,022 WARN L293 SmtUtils]: Spent 8.08s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 16:27:41,346 WARN L293 SmtUtils]: Spent 8.09s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 16:27:46,749 WARN L293 SmtUtils]: Spent 5.40s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 16:28:02,286 WARN L293 SmtUtils]: Spent 8.08s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 16:28:19,549 WARN L293 SmtUtils]: Spent 8.09s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 16:28:27,585 WARN L293 SmtUtils]: Spent 5.32s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 16:28:35,727 WARN L293 SmtUtils]: Spent 8.07s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 16:28:43,877 WARN L293 SmtUtils]: Spent 8.08s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 16:28:53,958 WARN L293 SmtUtils]: Spent 7.14s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 16:29:02,037 WARN L293 SmtUtils]: Spent 8.08s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 16:29:10,414 WARN L293 SmtUtils]: Spent 5.77s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 16:29:18,521 WARN L293 SmtUtils]: Spent 8.08s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 16:29:24,866 WARN L293 SmtUtils]: Spent 6.28s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 16:29:33,019 WARN L293 SmtUtils]: Spent 8.09s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 16:29:42,823 WARN L293 SmtUtils]: Spent 8.08s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 16:29:50,901 WARN L293 SmtUtils]: Spent 8.08s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) Received shutdown request... [2023-12-19 16:29:55,150 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 16:29:56,351 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-12-19 16:29:56,368 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137 [2023-12-19 16:29:56,370 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-19 16:29:56,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-19 16:29:56,370 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 81 with TraceHistMax 8,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while executing Executor. [2023-12-19 16:29:56,373 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 16:29:56,374 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 16:29:56,376 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 04:29:56 BoogieIcfgContainer [2023-12-19 16:29:56,376 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 16:29:56,376 INFO L158 Benchmark]: Toolchain (without parser) took 854682.51ms. Allocated memory was 189.8MB in the beginning and 2.4GB in the end (delta: 2.3GB). Free memory was 125.8MB in the beginning and 1.4GB in the end (delta: -1.2GB). Peak memory consumption was 1.7GB. Max. memory is 8.0GB. [2023-12-19 16:29:56,376 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 189.8MB. Free memory is still 139.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 16:29:56,376 INFO L158 Benchmark]: CACSL2BoogieTranslator took 265.89ms. Allocated memory is still 189.8MB. Free memory was 125.5MB in the beginning and 111.7MB in the end (delta: 13.8MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-19 16:29:56,376 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.58ms. Allocated memory is still 189.8MB. Free memory was 111.7MB in the beginning and 108.7MB in the end (delta: 2.9MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-19 16:29:56,376 INFO L158 Benchmark]: Boogie Preprocessor took 74.07ms. Allocated memory is still 189.8MB. Free memory was 108.7MB in the beginning and 105.4MB in the end (delta: 3.3MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-19 16:29:56,377 INFO L158 Benchmark]: RCFGBuilder took 562.81ms. Allocated memory was 189.8MB in the beginning and 248.5MB in the end (delta: 58.7MB). Free memory was 105.4MB in the beginning and 202.4MB in the end (delta: -97.0MB). Peak memory consumption was 18.3MB. Max. memory is 8.0GB. [2023-12-19 16:29:56,377 INFO L158 Benchmark]: TraceAbstraction took 853733.66ms. Allocated memory was 248.5MB in the beginning and 2.4GB in the end (delta: 2.2GB). Free memory was 201.3MB in the beginning and 1.4GB in the end (delta: -1.2GB). Peak memory consumption was 1.7GB. Max. memory is 8.0GB. [2023-12-19 16:29:56,377 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 189.8MB. Free memory is still 139.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 265.89ms. Allocated memory is still 189.8MB. Free memory was 125.5MB in the beginning and 111.7MB in the end (delta: 13.8MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 40.58ms. Allocated memory is still 189.8MB. Free memory was 111.7MB in the beginning and 108.7MB in the end (delta: 2.9MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 74.07ms. Allocated memory is still 189.8MB. Free memory was 108.7MB in the beginning and 105.4MB in the end (delta: 3.3MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 562.81ms. Allocated memory was 189.8MB in the beginning and 248.5MB in the end (delta: 58.7MB). Free memory was 105.4MB in the beginning and 202.4MB in the end (delta: -97.0MB). Peak memory consumption was 18.3MB. Max. memory is 8.0GB. * TraceAbstraction took 853733.66ms. Allocated memory was 248.5MB in the beginning and 2.4GB in the end (delta: 2.2GB). Free memory was 201.3MB in the beginning and 1.4GB in the end (delta: -1.2GB). Peak memory consumption was 1.7GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 81 with TraceHistMax 8,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 66 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 853.7s, OverallIterations: 31, TraceHistogramMax: 8, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 46.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8452 SdHoareTripleChecker+Valid, 12.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8447 mSDsluCounter, 9791 SdHoareTripleChecker+Invalid, 11.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7435 mSDsCounter, 575 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8854 IncrementalHoareTripleChecker+Invalid, 9429 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 575 mSolverCounterUnsat, 2356 mSDtfsCounter, 8854 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1415 GetRequests, 951 SyntacticMatches, 16 SemanticMatches, 448 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3575 ImplicationChecksByTransitivity, 171.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=410occurred in iteration=23, InterpolantAutomatonStates: 306, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 30 MinimizatonAttempts, 2357 StatesRemovedByMinimization, 29 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 164.0s InterpolantComputationTime, 2519 NumberOfCodeBlocks, 2519 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 2631 ConstructedInterpolants, 30 QuantifiedInterpolants, 35342 SizeOfPredicates, 86 NumberOfNonLiveVariables, 1204 ConjunctsInSsa, 241 ConjunctsInUnsatCore, 36 InterpolantComputations, 28 PerfectInterpolantSequences, 3867/4032 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown