/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 11:23:56,501 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 11:23:56,571 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 11:23:56,574 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 11:23:56,575 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 11:23:56,597 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 11:23:56,598 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 11:23:56,598 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 11:23:56,598 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 11:23:56,601 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 11:23:56,602 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 11:23:56,602 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 11:23:56,602 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 11:23:56,603 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 11:23:56,604 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 11:23:56,604 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 11:23:56,604 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 11:23:56,604 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 11:23:56,604 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 11:23:56,605 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 11:23:56,605 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 11:23:56,606 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 11:23:56,606 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 11:23:56,606 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 11:23:56,606 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 11:23:56,606 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 11:23:56,606 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 11:23:56,607 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 11:23:56,607 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 11:23:56,607 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 11:23:56,608 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 11:23:56,608 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 11:23:56,608 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 11:23:56,608 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 11:23:56,608 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 11:23:56,609 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 11:23:56,609 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 11:23:56,609 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 11:23:56,609 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 11:23:56,609 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 11:23:56,609 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 11:23:56,609 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 11:23:56,609 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 11:23:56,610 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 11:23:56,804 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 11:23:56,824 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 11:23:56,826 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 11:23:56,826 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 11:23:56,828 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 11:23:56,829 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.UNBOUNDED.pals.c [2023-12-21 11:23:57,926 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 11:23:58,132 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 11:23:58,132 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.UNBOUNDED.pals.c [2023-12-21 11:23:58,142 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/347d733a5/3d4cf3c7f5304e399bc5033f31516b6c/FLAG26c7efaa6 [2023-12-21 11:23:58,154 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/347d733a5/3d4cf3c7f5304e399bc5033f31516b6c [2023-12-21 11:23:58,156 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 11:23:58,157 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 11:23:58,158 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 11:23:58,158 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 11:23:58,161 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 11:23:58,162 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:23:58" (1/1) ... [2023-12-21 11:23:58,162 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76685c98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:23:58, skipping insertion in model container [2023-12-21 11:23:58,163 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:23:58" (1/1) ... [2023-12-21 11:23:58,194 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 11:23:58,350 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.UNBOUNDED.pals.c[14680,14693] [2023-12-21 11:23:58,353 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 11:23:58,361 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 11:23:58,408 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.UNBOUNDED.pals.c[14680,14693] [2023-12-21 11:23:58,408 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 11:23:58,432 INFO L206 MainTranslator]: Completed translation [2023-12-21 11:23:58,433 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:23:58 WrapperNode [2023-12-21 11:23:58,433 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 11:23:58,434 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 11:23:58,435 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 11:23:58,435 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 11:23:58,440 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:23:58" (1/1) ... [2023-12-21 11:23:58,454 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:23:58" (1/1) ... [2023-12-21 11:23:58,496 INFO L138 Inliner]: procedures = 32, calls = 48, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 497 [2023-12-21 11:23:58,496 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 11:23:58,497 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 11:23:58,497 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 11:23:58,497 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 11:23:58,509 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:23:58" (1/1) ... [2023-12-21 11:23:58,509 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:23:58" (1/1) ... [2023-12-21 11:23:58,522 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:23:58" (1/1) ... [2023-12-21 11:23:58,550 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-21 11:23:58,551 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:23:58" (1/1) ... [2023-12-21 11:23:58,551 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:23:58" (1/1) ... [2023-12-21 11:23:58,558 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:23:58" (1/1) ... [2023-12-21 11:23:58,572 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:23:58" (1/1) ... [2023-12-21 11:23:58,575 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:23:58" (1/1) ... [2023-12-21 11:23:58,576 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:23:58" (1/1) ... [2023-12-21 11:23:58,603 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 11:23:58,604 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 11:23:58,604 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 11:23:58,604 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 11:23:58,605 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:23:58" (1/1) ... [2023-12-21 11:23:58,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 11:23:58,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:23:58,629 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) [2023-12-21 11:23:58,688 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 [2023-12-21 11:23:58,694 INFO L130 BoogieDeclarations]: Found specification of procedure read_manual_selection_history [2023-12-21 11:23:58,694 INFO L138 BoogieDeclarations]: Found implementation of procedure read_manual_selection_history [2023-12-21 11:23:58,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 11:23:58,695 INFO L130 BoogieDeclarations]: Found specification of procedure read_side2_failed_history [2023-12-21 11:23:58,696 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side2_failed_history [2023-12-21 11:23:58,696 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-12-21 11:23:58,696 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-12-21 11:23:58,696 INFO L130 BoogieDeclarations]: Found specification of procedure flip_the_side [2023-12-21 11:23:58,696 INFO L138 BoogieDeclarations]: Found implementation of procedure flip_the_side [2023-12-21 11:23:58,696 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-21 11:23:58,696 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-21 11:23:58,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 11:23:58,697 INFO L130 BoogieDeclarations]: Found specification of procedure read_side1_failed_history [2023-12-21 11:23:58,697 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side1_failed_history [2023-12-21 11:23:58,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 11:23:58,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 11:23:58,697 INFO L130 BoogieDeclarations]: Found specification of procedure read_active_side_history [2023-12-21 11:23:58,697 INFO L138 BoogieDeclarations]: Found implementation of procedure read_active_side_history [2023-12-21 11:23:58,819 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 11:23:58,822 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 11:23:59,206 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 11:23:59,255 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 11:23:59,256 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-21 11:23:59,256 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:23:59 BoogieIcfgContainer [2023-12-21 11:23:59,256 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 11:23:59,258 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 11:23:59,258 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 11:23:59,261 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 11:23:59,263 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 11:23:58" (1/3) ... [2023-12-21 11:23:59,263 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c6dbb69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:23:59, skipping insertion in model container [2023-12-21 11:23:59,264 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:23:58" (2/3) ... [2023-12-21 11:23:59,264 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c6dbb69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:23:59, skipping insertion in model container [2023-12-21 11:23:59,264 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:23:59" (3/3) ... [2023-12-21 11:23:59,265 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.ufo.UNBOUNDED.pals.c [2023-12-21 11:23:59,278 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 11:23:59,278 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 11:23:59,325 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 11:23:59,329 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;@7ec5c869, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 11:23:59,330 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 11:23:59,333 INFO L276 IsEmpty]: Start isEmpty. Operand has 170 states, 130 states have (on average 1.6) internal successors, (208), 132 states have internal predecessors, (208), 31 states have call successors, (31), 7 states have call predecessors, (31), 7 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-12-21 11:23:59,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-21 11:23:59,341 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:23:59,342 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:23:59,342 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:23:59,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:23:59,346 INFO L85 PathProgramCache]: Analyzing trace with hash 975176766, now seen corresponding path program 1 times [2023-12-21 11:23:59,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:23:59,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172831335] [2023-12-21 11:23:59,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:23:59,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:23:59,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:59,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 11:23:59,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:59,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:23:59,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:23:59,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172831335] [2023-12-21 11:23:59,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172831335] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:23:59,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:23:59,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 11:23:59,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302876933] [2023-12-21 11:23:59,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:23:59,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 11:23:59,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:23:59,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 11:23:59,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 11:23:59,607 INFO L87 Difference]: Start difference. First operand has 170 states, 130 states have (on average 1.6) internal successors, (208), 132 states have internal predecessors, (208), 31 states have call successors, (31), 7 states have call predecessors, (31), 7 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-21 11:23:59,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:23:59,684 INFO L93 Difference]: Finished difference Result 323 states and 540 transitions. [2023-12-21 11:23:59,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 11:23:59,686 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2023-12-21 11:23:59,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:23:59,696 INFO L225 Difference]: With dead ends: 323 [2023-12-21 11:23:59,696 INFO L226 Difference]: Without dead ends: 168 [2023-12-21 11:23:59,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 11:23:59,706 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:23:59,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 260 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:23:59,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2023-12-21 11:23:59,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2023-12-21 11:23:59,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 129 states have (on average 1.573643410852713) internal successors, (203), 130 states have internal predecessors, (203), 31 states have call successors, (31), 7 states have call predecessors, (31), 7 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-12-21 11:23:59,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 265 transitions. [2023-12-21 11:23:59,749 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 265 transitions. Word has length 23 [2023-12-21 11:23:59,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:23:59,749 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 265 transitions. [2023-12-21 11:23:59,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-21 11:23:59,749 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 265 transitions. [2023-12-21 11:23:59,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-21 11:23:59,750 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:23:59,750 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:23:59,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 11:23:59,751 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:23:59,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:23:59,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1018967940, now seen corresponding path program 1 times [2023-12-21 11:23:59,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:23:59,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225491450] [2023-12-21 11:23:59,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:23:59,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:23:59,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:59,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 11:23:59,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:59,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:23:59,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:23:59,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225491450] [2023-12-21 11:23:59,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225491450] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:23:59,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:23:59,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 11:23:59,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049605064] [2023-12-21 11:23:59,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:23:59,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 11:23:59,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:23:59,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 11:23:59,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 11:23:59,892 INFO L87 Difference]: Start difference. First operand 168 states and 265 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-21 11:23:59,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:23:59,965 INFO L93 Difference]: Finished difference Result 323 states and 505 transitions. [2023-12-21 11:23:59,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 11:23:59,966 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2023-12-21 11:23:59,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:23:59,967 INFO L225 Difference]: With dead ends: 323 [2023-12-21 11:23:59,967 INFO L226 Difference]: Without dead ends: 168 [2023-12-21 11:23:59,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-21 11:23:59,969 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 131 mSDsluCounter, 852 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 1108 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:23:59,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 1108 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:23:59,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2023-12-21 11:23:59,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2023-12-21 11:23:59,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 129 states have (on average 1.4806201550387597) internal successors, (191), 130 states have internal predecessors, (191), 31 states have call successors, (31), 7 states have call predecessors, (31), 7 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-12-21 11:23:59,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 253 transitions. [2023-12-21 11:23:59,984 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 253 transitions. Word has length 23 [2023-12-21 11:23:59,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:23:59,985 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 253 transitions. [2023-12-21 11:23:59,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-21 11:23:59,985 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 253 transitions. [2023-12-21 11:23:59,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-21 11:23:59,986 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:23:59,986 INFO L195 NwaCegarLoop]: trace 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, 1, 1, 1] [2023-12-21 11:23:59,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 11:23:59,986 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:23:59,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:23:59,987 INFO L85 PathProgramCache]: Analyzing trace with hash 26280683, now seen corresponding path program 1 times [2023-12-21 11:23:59,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:23:59,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017550055] [2023-12-21 11:23:59,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:23:59,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:24:00,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:00,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:24:00,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:00,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:24:00,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:24:00,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017550055] [2023-12-21 11:24:00,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017550055] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:24:00,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:24:00,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:24:00,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367346274] [2023-12-21 11:24:00,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:24:00,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:24:00,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:24:00,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:24:00,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:24:00,164 INFO L87 Difference]: Start difference. First operand 168 states and 253 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-21 11:24:00,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:24:00,212 INFO L93 Difference]: Finished difference Result 324 states and 497 transitions. [2023-12-21 11:24:00,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 11:24:00,213 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2023-12-21 11:24:00,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:24:00,215 INFO L225 Difference]: With dead ends: 324 [2023-12-21 11:24:00,215 INFO L226 Difference]: Without dead ends: 172 [2023-12-21 11:24:00,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 11:24:00,218 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 5 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:24:00,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 716 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:24:00,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2023-12-21 11:24:00,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2023-12-21 11:24:00,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 132 states have (on average 1.4696969696969697) internal successors, (194), 133 states have internal predecessors, (194), 31 states have call successors, (31), 8 states have call predecessors, (31), 8 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-12-21 11:24:00,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 256 transitions. [2023-12-21 11:24:00,239 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 256 transitions. Word has length 34 [2023-12-21 11:24:00,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:24:00,239 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 256 transitions. [2023-12-21 11:24:00,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-21 11:24:00,240 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 256 transitions. [2023-12-21 11:24:00,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-12-21 11:24:00,241 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:24:00,241 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:24:00,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 11:24:00,241 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:24:00,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:24:00,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1285077620, now seen corresponding path program 1 times [2023-12-21 11:24:00,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:24:00,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446724363] [2023-12-21 11:24:00,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:00,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:24:00,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:00,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:24:00,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:00,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 11:24:00,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:00,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-21 11:24:00,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:00,329 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 11:24:00,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:24:00,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446724363] [2023-12-21 11:24:00,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446724363] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:24:00,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:24:00,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:24:00,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642586130] [2023-12-21 11:24:00,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:24:00,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:24:00,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:24:00,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:24:00,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:24:00,331 INFO L87 Difference]: Start difference. First operand 172 states and 256 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-21 11:24:00,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:24:00,378 INFO L93 Difference]: Finished difference Result 473 states and 714 transitions. [2023-12-21 11:24:00,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:24:00,379 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 48 [2023-12-21 11:24:00,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:24:00,381 INFO L225 Difference]: With dead ends: 473 [2023-12-21 11:24:00,381 INFO L226 Difference]: Without dead ends: 317 [2023-12-21 11:24:00,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:24:00,389 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 209 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:24:00,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 495 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:24:00,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2023-12-21 11:24:00,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 314. [2023-12-21 11:24:00,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 237 states have (on average 1.4852320675105486) internal successors, (352), 239 states have internal predecessors, (352), 60 states have call successors, (60), 16 states have call predecessors, (60), 16 states have return successors, (60), 59 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-21 11:24:00,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 472 transitions. [2023-12-21 11:24:00,418 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 472 transitions. Word has length 48 [2023-12-21 11:24:00,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:24:00,418 INFO L495 AbstractCegarLoop]: Abstraction has 314 states and 472 transitions. [2023-12-21 11:24:00,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-21 11:24:00,418 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 472 transitions. [2023-12-21 11:24:00,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-21 11:24:00,423 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:24:00,424 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:24:00,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 11:24:00,424 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:24:00,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:24:00,424 INFO L85 PathProgramCache]: Analyzing trace with hash -271052700, now seen corresponding path program 1 times [2023-12-21 11:24:00,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:24:00,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717781635] [2023-12-21 11:24:00,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:00,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:24:00,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:00,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:24:00,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:00,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 11:24:00,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:00,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-21 11:24:00,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:00,486 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 11:24:00,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:24:00,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717781635] [2023-12-21 11:24:00,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717781635] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:24:00,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:24:00,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:24:00,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92782631] [2023-12-21 11:24:00,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:24:00,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:24:00,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:24:00,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:24:00,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:24:00,489 INFO L87 Difference]: Start difference. First operand 314 states and 472 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-21 11:24:00,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:24:00,545 INFO L93 Difference]: Finished difference Result 886 states and 1342 transitions. [2023-12-21 11:24:00,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:24:00,546 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 49 [2023-12-21 11:24:00,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:24:00,552 INFO L225 Difference]: With dead ends: 886 [2023-12-21 11:24:00,552 INFO L226 Difference]: Without dead ends: 588 [2023-12-21 11:24:00,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:24:00,555 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 210 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:24:00,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 515 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:24:00,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2023-12-21 11:24:00,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 582. [2023-12-21 11:24:00,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 433 states have (on average 1.4942263279445727) internal successors, (647), 437 states have internal predecessors, (647), 117 states have call successors, (117), 31 states have call predecessors, (117), 31 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2023-12-21 11:24:00,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 881 transitions. [2023-12-21 11:24:00,607 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 881 transitions. Word has length 49 [2023-12-21 11:24:00,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:24:00,609 INFO L495 AbstractCegarLoop]: Abstraction has 582 states and 881 transitions. [2023-12-21 11:24:00,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-21 11:24:00,609 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 881 transitions. [2023-12-21 11:24:00,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-21 11:24:00,610 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:24:00,610 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:24:00,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-21 11:24:00,613 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:24:00,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:24:00,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1550916378, now seen corresponding path program 1 times [2023-12-21 11:24:00,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:24:00,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168417921] [2023-12-21 11:24:00,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:00,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:24:00,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:00,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:24:00,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:00,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 11:24:00,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:00,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-21 11:24:00,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:00,705 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 11:24:00,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:24:00,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168417921] [2023-12-21 11:24:00,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168417921] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:24:00,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:24:00,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 11:24:00,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769936768] [2023-12-21 11:24:00,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:24:00,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 11:24:00,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:24:00,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 11:24:00,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 11:24:00,707 INFO L87 Difference]: Start difference. First operand 582 states and 881 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-21 11:24:00,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:24:00,843 INFO L93 Difference]: Finished difference Result 1237 states and 1874 transitions. [2023-12-21 11:24:00,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 11:24:00,844 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), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 49 [2023-12-21 11:24:00,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:24:00,848 INFO L225 Difference]: With dead ends: 1237 [2023-12-21 11:24:00,849 INFO L226 Difference]: Without dead ends: 671 [2023-12-21 11:24:00,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:24:00,851 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 351 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:24:00,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 643 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:24:00,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2023-12-21 11:24:00,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 663. [2023-12-21 11:24:00,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 501 states have (on average 1.4810379241516967) internal successors, (742), 504 states have internal predecessors, (742), 124 states have call successors, (124), 37 states have call predecessors, (124), 37 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2023-12-21 11:24:00,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 990 transitions. [2023-12-21 11:24:00,932 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 990 transitions. Word has length 49 [2023-12-21 11:24:00,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:24:00,933 INFO L495 AbstractCegarLoop]: Abstraction has 663 states and 990 transitions. [2023-12-21 11:24:00,933 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), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-21 11:24:00,933 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 990 transitions. [2023-12-21 11:24:00,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-21 11:24:00,934 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:24:00,935 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:24:00,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 11:24:00,935 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:24:00,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:24:00,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1743107091, now seen corresponding path program 1 times [2023-12-21 11:24:00,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:24:00,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952941782] [2023-12-21 11:24:00,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:00,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:24:00,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:01,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:24:01,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:01,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 11:24:01,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:01,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 11:24:01,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:01,025 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 11:24:01,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:24:01,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952941782] [2023-12-21 11:24:01,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952941782] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:24:01,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:24:01,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 11:24:01,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959877472] [2023-12-21 11:24:01,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:24:01,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 11:24:01,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:24:01,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 11:24:01,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 11:24:01,027 INFO L87 Difference]: Start difference. First operand 663 states and 990 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-21 11:24:01,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:24:01,153 INFO L93 Difference]: Finished difference Result 1241 states and 1874 transitions. [2023-12-21 11:24:01,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 11:24:01,154 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), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 50 [2023-12-21 11:24:01,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:24:01,156 INFO L225 Difference]: With dead ends: 1241 [2023-12-21 11:24:01,157 INFO L226 Difference]: Without dead ends: 675 [2023-12-21 11:24:01,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:24:01,159 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 348 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:24:01,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [348 Valid, 645 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:24:01,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2023-12-21 11:24:01,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 671. [2023-12-21 11:24:01,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 509 states have (on average 1.4734774066797642) internal successors, (750), 512 states have internal predecessors, (750), 124 states have call successors, (124), 37 states have call predecessors, (124), 37 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2023-12-21 11:24:01,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 998 transitions. [2023-12-21 11:24:01,198 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 998 transitions. Word has length 50 [2023-12-21 11:24:01,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:24:01,200 INFO L495 AbstractCegarLoop]: Abstraction has 671 states and 998 transitions. [2023-12-21 11:24:01,200 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), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-21 11:24:01,200 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 998 transitions. [2023-12-21 11:24:01,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-21 11:24:01,201 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:24:01,201 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:24:01,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 11:24:01,201 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:24:01,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:24:01,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1020972895, now seen corresponding path program 1 times [2023-12-21 11:24:01,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:24:01,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308717329] [2023-12-21 11:24:01,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:01,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:24:01,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:01,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:24:01,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:01,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 11:24:01,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:01,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 11:24:01,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:01,297 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 11:24:01,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:24:01,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308717329] [2023-12-21 11:24:01,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308717329] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:24:01,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:24:01,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:24:01,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954654569] [2023-12-21 11:24:01,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:24:01,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:24:01,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:24:01,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:24:01,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:24:01,299 INFO L87 Difference]: Start difference. First operand 671 states and 998 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-21 11:24:01,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:24:01,419 INFO L93 Difference]: Finished difference Result 1241 states and 1866 transitions. [2023-12-21 11:24:01,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 11:24:01,419 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 52 [2023-12-21 11:24:01,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:24:01,422 INFO L225 Difference]: With dead ends: 1241 [2023-12-21 11:24:01,422 INFO L226 Difference]: Without dead ends: 675 [2023-12-21 11:24:01,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 11:24:01,424 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 61 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 638 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:24:01,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 638 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:24:01,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2023-12-21 11:24:01,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 671. [2023-12-21 11:24:01,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 509 states have (on average 1.4656188605108056) internal successors, (746), 512 states have internal predecessors, (746), 124 states have call successors, (124), 37 states have call predecessors, (124), 37 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2023-12-21 11:24:01,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 994 transitions. [2023-12-21 11:24:01,495 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 994 transitions. Word has length 52 [2023-12-21 11:24:01,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:24:01,495 INFO L495 AbstractCegarLoop]: Abstraction has 671 states and 994 transitions. [2023-12-21 11:24:01,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-21 11:24:01,496 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 994 transitions. [2023-12-21 11:24:01,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-21 11:24:01,496 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:24:01,496 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:24:01,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 11:24:01,497 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:24:01,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:24:01,497 INFO L85 PathProgramCache]: Analyzing trace with hash 70077876, now seen corresponding path program 1 times [2023-12-21 11:24:01,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:24:01,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984499161] [2023-12-21 11:24:01,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:01,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:24:01,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:01,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:24:01,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:01,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 11:24:01,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:01,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-21 11:24:01,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:01,639 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 11:24:01,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:24:01,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984499161] [2023-12-21 11:24:01,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984499161] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:24:01,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:24:01,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:24:01,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766455802] [2023-12-21 11:24:01,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:24:01,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:24:01,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:24:01,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:24:01,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:24:01,641 INFO L87 Difference]: Start difference. First operand 671 states and 994 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-21 11:24:01,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:24:01,715 INFO L93 Difference]: Finished difference Result 1257 states and 1886 transitions. [2023-12-21 11:24:01,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 11:24:01,715 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 53 [2023-12-21 11:24:01,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:24:01,718 INFO L225 Difference]: With dead ends: 1257 [2023-12-21 11:24:01,718 INFO L226 Difference]: Without dead ends: 691 [2023-12-21 11:24:01,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 11:24:01,720 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 6 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:24:01,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 728 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:24:01,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2023-12-21 11:24:01,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 691. [2023-12-21 11:24:01,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 525 states have (on average 1.4514285714285715) internal successors, (762), 528 states have internal predecessors, (762), 124 states have call successors, (124), 41 states have call predecessors, (124), 41 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2023-12-21 11:24:01,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1010 transitions. [2023-12-21 11:24:01,796 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1010 transitions. Word has length 53 [2023-12-21 11:24:01,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:24:01,796 INFO L495 AbstractCegarLoop]: Abstraction has 691 states and 1010 transitions. [2023-12-21 11:24:01,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-21 11:24:01,797 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1010 transitions. [2023-12-21 11:24:01,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-21 11:24:01,797 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:24:01,798 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:24:01,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 11:24:01,798 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:24:01,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:24:01,798 INFO L85 PathProgramCache]: Analyzing trace with hash 2022849498, now seen corresponding path program 1 times [2023-12-21 11:24:01,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:24:01,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596331296] [2023-12-21 11:24:01,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:01,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:24:01,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:01,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:24:01,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:01,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 11:24:01,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:01,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-21 11:24:01,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:01,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 11:24:01,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:01,933 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 11:24:01,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:24:01,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596331296] [2023-12-21 11:24:01,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596331296] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:24:01,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:24:01,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:24:01,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114080250] [2023-12-21 11:24:01,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:24:01,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:24:01,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:24:01,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:24:01,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:24:01,934 INFO L87 Difference]: Start difference. First operand 691 states and 1010 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-21 11:24:01,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:24:01,999 INFO L93 Difference]: Finished difference Result 1297 states and 1930 transitions. [2023-12-21 11:24:01,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 11:24:02,000 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 61 [2023-12-21 11:24:02,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:24:02,002 INFO L225 Difference]: With dead ends: 1297 [2023-12-21 11:24:02,002 INFO L226 Difference]: Without dead ends: 711 [2023-12-21 11:24:02,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 11:24:02,004 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 6 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:24:02,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 714 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:24:02,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2023-12-21 11:24:02,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 711. [2023-12-21 11:24:02,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 711 states, 541 states have (on average 1.4380776340110906) internal successors, (778), 544 states have internal predecessors, (778), 124 states have call successors, (124), 45 states have call predecessors, (124), 45 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2023-12-21 11:24:02,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 1026 transitions. [2023-12-21 11:24:02,039 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 1026 transitions. Word has length 61 [2023-12-21 11:24:02,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:24:02,040 INFO L495 AbstractCegarLoop]: Abstraction has 711 states and 1026 transitions. [2023-12-21 11:24:02,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-21 11:24:02,040 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 1026 transitions. [2023-12-21 11:24:02,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-21 11:24:02,041 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:24:02,041 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:24:02,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-21 11:24:02,042 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:24:02,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:24:02,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1319245148, now seen corresponding path program 1 times [2023-12-21 11:24:02,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:24:02,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583299405] [2023-12-21 11:24:02,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:02,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:24:02,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:02,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:24:02,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:02,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 11:24:02,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:02,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-21 11:24:02,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:02,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 11:24:02,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:02,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 11:24:02,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:02,146 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 11:24:02,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:24:02,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583299405] [2023-12-21 11:24:02,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583299405] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:24:02,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:24:02,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:24:02,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091853475] [2023-12-21 11:24:02,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:24:02,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:24:02,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:24:02,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:24:02,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:24:02,147 INFO L87 Difference]: Start difference. First operand 711 states and 1026 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-21 11:24:02,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:24:02,233 INFO L93 Difference]: Finished difference Result 1333 states and 1946 transitions. [2023-12-21 11:24:02,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 11:24:02,234 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 69 [2023-12-21 11:24:02,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:24:02,237 INFO L225 Difference]: With dead ends: 1333 [2023-12-21 11:24:02,237 INFO L226 Difference]: Without dead ends: 727 [2023-12-21 11:24:02,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 11:24:02,239 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 5 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:24:02,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 723 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:24:02,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2023-12-21 11:24:02,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 727. [2023-12-21 11:24:02,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 553 states have (on average 1.4285714285714286) internal successors, (790), 556 states have internal predecessors, (790), 124 states have call successors, (124), 49 states have call predecessors, (124), 49 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2023-12-21 11:24:02,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 1038 transitions. [2023-12-21 11:24:02,272 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 1038 transitions. Word has length 69 [2023-12-21 11:24:02,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:24:02,272 INFO L495 AbstractCegarLoop]: Abstraction has 727 states and 1038 transitions. [2023-12-21 11:24:02,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-21 11:24:02,272 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 1038 transitions. [2023-12-21 11:24:02,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-21 11:24:02,273 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:24:02,273 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:24:02,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 11:24:02,273 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:24:02,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:24:02,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1077214155, now seen corresponding path program 1 times [2023-12-21 11:24:02,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:24:02,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519438686] [2023-12-21 11:24:02,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:02,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:24:02,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:02,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:24:02,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:02,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 11:24:02,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:02,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-21 11:24:02,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:02,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 11:24:02,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:02,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 11:24:02,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:02,370 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 11:24:02,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:24:02,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519438686] [2023-12-21 11:24:02,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519438686] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:24:02,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:24:02,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:24:02,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831972039] [2023-12-21 11:24:02,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:24:02,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:24:02,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:24:02,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:24:02,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:24:02,372 INFO L87 Difference]: Start difference. First operand 727 states and 1038 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-21 11:24:02,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:24:02,435 INFO L93 Difference]: Finished difference Result 1369 states and 1986 transitions. [2023-12-21 11:24:02,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 11:24:02,436 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 69 [2023-12-21 11:24:02,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:24:02,439 INFO L225 Difference]: With dead ends: 1369 [2023-12-21 11:24:02,439 INFO L226 Difference]: Without dead ends: 747 [2023-12-21 11:24:02,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 11:24:02,441 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 6 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:24:02,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 714 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:24:02,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2023-12-21 11:24:02,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 747. [2023-12-21 11:24:02,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 747 states, 569 states have (on average 1.4165202108963093) internal successors, (806), 572 states have internal predecessors, (806), 124 states have call successors, (124), 53 states have call predecessors, (124), 53 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2023-12-21 11:24:02,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 1054 transitions. [2023-12-21 11:24:02,474 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 1054 transitions. Word has length 69 [2023-12-21 11:24:02,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:24:02,474 INFO L495 AbstractCegarLoop]: Abstraction has 747 states and 1054 transitions. [2023-12-21 11:24:02,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-21 11:24:02,474 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 1054 transitions. [2023-12-21 11:24:02,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-21 11:24:02,478 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:24:02,478 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:24:02,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 11:24:02,478 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:24:02,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:24:02,479 INFO L85 PathProgramCache]: Analyzing trace with hash 371503403, now seen corresponding path program 1 times [2023-12-21 11:24:02,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:24:02,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229873453] [2023-12-21 11:24:02,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:02,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:24:02,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:02,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:24:02,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:02,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 11:24:02,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:02,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-21 11:24:02,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:02,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 11:24:02,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:02,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 11:24:02,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:02,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-21 11:24:02,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:02,601 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-21 11:24:02,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:24:02,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229873453] [2023-12-21 11:24:02,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229873453] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:24:02,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:24:02,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:24:02,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303039746] [2023-12-21 11:24:02,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:24:02,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:24:02,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:24:02,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:24:02,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:24:02,603 INFO L87 Difference]: Start difference. First operand 747 states and 1054 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-21 11:24:02,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:24:02,661 INFO L93 Difference]: Finished difference Result 1413 states and 2014 transitions. [2023-12-21 11:24:02,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 11:24:02,661 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 77 [2023-12-21 11:24:02,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:24:02,665 INFO L225 Difference]: With dead ends: 1413 [2023-12-21 11:24:02,665 INFO L226 Difference]: Without dead ends: 771 [2023-12-21 11:24:02,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 11:24:02,668 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 7 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:24:02,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 725 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:24:02,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2023-12-21 11:24:02,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 771. [2023-12-21 11:24:02,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 771 states, 589 states have (on average 1.4023769100169778) internal successors, (826), 592 states have internal predecessors, (826), 124 states have call successors, (124), 57 states have call predecessors, (124), 57 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2023-12-21 11:24:02,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 1074 transitions. [2023-12-21 11:24:02,705 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 1074 transitions. Word has length 77 [2023-12-21 11:24:02,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:24:02,705 INFO L495 AbstractCegarLoop]: Abstraction has 771 states and 1074 transitions. [2023-12-21 11:24:02,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-21 11:24:02,706 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 1074 transitions. [2023-12-21 11:24:02,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-21 11:24:02,708 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:24:02,708 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:24:02,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 11:24:02,708 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:24:02,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:24:02,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1261624674, now seen corresponding path program 1 times [2023-12-21 11:24:02,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:24:02,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513781956] [2023-12-21 11:24:02,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:02,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:24:02,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:02,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:24:02,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:02,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 11:24:02,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:02,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-21 11:24:02,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:02,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 11:24:02,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:02,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 11:24:02,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:02,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-21 11:24:02,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:02,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 11:24:02,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:02,912 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-21 11:24:02,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:24:02,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513781956] [2023-12-21 11:24:02,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513781956] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:24:02,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:24:02,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:24:02,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464073935] [2023-12-21 11:24:02,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:24:02,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:24:02,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:24:02,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:24:02,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:24:02,913 INFO L87 Difference]: Start difference. First operand 771 states and 1074 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-21 11:24:03,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:24:03,128 INFO L93 Difference]: Finished difference Result 2143 states and 3005 transitions. [2023-12-21 11:24:03,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 11:24:03,129 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 80 [2023-12-21 11:24:03,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:24:03,134 INFO L225 Difference]: With dead ends: 2143 [2023-12-21 11:24:03,134 INFO L226 Difference]: Without dead ends: 1477 [2023-12-21 11:24:03,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-12-21 11:24:03,136 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 259 mSDsluCounter, 1134 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 1368 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:24:03,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 1368 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:24:03,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1477 states. [2023-12-21 11:24:03,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1477 to 1047. [2023-12-21 11:24:03,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1047 states, 792 states have (on average 1.3888888888888888) internal successors, (1100), 797 states have internal predecessors, (1100), 172 states have call successors, (172), 82 states have call predecessors, (172), 82 states have return successors, (172), 167 states have call predecessors, (172), 172 states have call successors, (172) [2023-12-21 11:24:03,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 1444 transitions. [2023-12-21 11:24:03,200 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 1444 transitions. Word has length 80 [2023-12-21 11:24:03,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:24:03,201 INFO L495 AbstractCegarLoop]: Abstraction has 1047 states and 1444 transitions. [2023-12-21 11:24:03,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-21 11:24:03,201 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 1444 transitions. [2023-12-21 11:24:03,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-21 11:24:03,202 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:24:03,202 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:24:03,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 11:24:03,202 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:24:03,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:24:03,202 INFO L85 PathProgramCache]: Analyzing trace with hash 203336820, now seen corresponding path program 1 times [2023-12-21 11:24:03,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:24:03,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698946122] [2023-12-21 11:24:03,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:03,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:24:03,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:03,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:24:03,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:03,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 11:24:03,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:03,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-21 11:24:03,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:03,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 11:24:03,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:03,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 11:24:03,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:03,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-21 11:24:03,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:03,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-21 11:24:03,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:03,291 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-21 11:24:03,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:24:03,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698946122] [2023-12-21 11:24:03,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698946122] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:24:03,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:24:03,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:24:03,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592142056] [2023-12-21 11:24:03,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:24:03,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:24:03,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:24:03,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:24:03,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:24:03,293 INFO L87 Difference]: Start difference. First operand 1047 states and 1444 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-21 11:24:03,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:24:03,364 INFO L93 Difference]: Finished difference Result 1953 states and 2714 transitions. [2023-12-21 11:24:03,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 11:24:03,364 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 84 [2023-12-21 11:24:03,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:24:03,368 INFO L225 Difference]: With dead ends: 1953 [2023-12-21 11:24:03,368 INFO L226 Difference]: Without dead ends: 1071 [2023-12-21 11:24:03,371 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 [2023-12-21 11:24:03,371 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 5 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:24:03,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 723 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:24:03,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1071 states. [2023-12-21 11:24:03,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1071 to 1071. [2023-12-21 11:24:03,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1071 states, 810 states have (on average 1.3802469135802469) internal successors, (1118), 815 states have internal predecessors, (1118), 172 states have call successors, (172), 88 states have call predecessors, (172), 88 states have return successors, (172), 167 states have call predecessors, (172), 172 states have call successors, (172) [2023-12-21 11:24:03,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 1462 transitions. [2023-12-21 11:24:03,456 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 1462 transitions. Word has length 84 [2023-12-21 11:24:03,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:24:03,457 INFO L495 AbstractCegarLoop]: Abstraction has 1071 states and 1462 transitions. [2023-12-21 11:24:03,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-21 11:24:03,457 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 1462 transitions. [2023-12-21 11:24:03,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-21 11:24:03,458 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:24:03,458 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:24:03,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 11:24:03,458 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:24:03,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:24:03,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1117244196, now seen corresponding path program 1 times [2023-12-21 11:24:03,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:24:03,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646734123] [2023-12-21 11:24:03,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:03,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:24:03,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:03,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:24:03,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:03,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 11:24:03,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:03,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-21 11:24:03,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:03,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 11:24:03,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:03,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 11:24:03,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:03,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-21 11:24:03,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:03,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 11:24:03,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:03,622 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-21 11:24:03,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:24:03,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646734123] [2023-12-21 11:24:03,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646734123] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:24:03,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:24:03,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 11:24:03,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018233375] [2023-12-21 11:24:03,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:24:03,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 11:24:03,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:24:03,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 11:24:03,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-21 11:24:03,624 INFO L87 Difference]: Start difference. First operand 1071 states and 1462 transitions. Second operand has 8 states, 6 states have (on average 9.833333333333334) internal successors, (59), 7 states have internal predecessors, (59), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 11:24:03,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:24:03,805 INFO L93 Difference]: Finished difference Result 1485 states and 2136 transitions. [2023-12-21 11:24:03,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 11:24:03,806 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 9.833333333333334) internal successors, (59), 7 states have internal predecessors, (59), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) Word has length 83 [2023-12-21 11:24:03,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:24:03,811 INFO L225 Difference]: With dead ends: 1485 [2023-12-21 11:24:03,811 INFO L226 Difference]: Without dead ends: 1483 [2023-12-21 11:24:03,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-12-21 11:24:03,812 INFO L413 NwaCegarLoop]: 424 mSDtfsCounter, 311 mSDsluCounter, 2006 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 2430 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:24:03,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 2430 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:24:03,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1483 states. [2023-12-21 11:24:03,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1483 to 1079. [2023-12-21 11:24:03,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1079 states, 814 states have (on average 1.3783783783783783) internal successors, (1122), 821 states have internal predecessors, (1122), 174 states have call successors, (174), 90 states have call predecessors, (174), 90 states have return successors, (174), 167 states have call predecessors, (174), 174 states have call successors, (174) [2023-12-21 11:24:03,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 1470 transitions. [2023-12-21 11:24:03,881 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 1470 transitions. Word has length 83 [2023-12-21 11:24:03,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:24:03,882 INFO L495 AbstractCegarLoop]: Abstraction has 1079 states and 1470 transitions. [2023-12-21 11:24:03,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 9.833333333333334) internal successors, (59), 7 states have internal predecessors, (59), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 11:24:03,883 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 1470 transitions. [2023-12-21 11:24:03,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-21 11:24:03,883 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:24:03,883 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:24:03,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-21 11:24:03,884 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:24:03,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:24:03,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1786856787, now seen corresponding path program 1 times [2023-12-21 11:24:03,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:24:03,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495301979] [2023-12-21 11:24:03,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:03,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:24:03,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:03,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:24:03,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:03,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 11:24:03,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:03,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-21 11:24:03,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:03,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 11:24:03,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:03,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 11:24:03,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:03,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-21 11:24:03,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:03,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 11:24:03,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:03,976 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-21 11:24:03,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:24:03,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495301979] [2023-12-21 11:24:03,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495301979] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:24:03,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:24:03,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:24:03,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106785026] [2023-12-21 11:24:03,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:24:03,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:24:03,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:24:03,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:24:03,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:24:03,978 INFO L87 Difference]: Start difference. First operand 1079 states and 1470 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 11:24:04,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:24:04,172 INFO L93 Difference]: Finished difference Result 1949 states and 2665 transitions. [2023-12-21 11:24:04,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 11:24:04,173 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 86 [2023-12-21 11:24:04,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:24:04,177 INFO L225 Difference]: With dead ends: 1949 [2023-12-21 11:24:04,177 INFO L226 Difference]: Without dead ends: 1117 [2023-12-21 11:24:04,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-12-21 11:24:04,179 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 247 mSDsluCounter, 1177 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 1425 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:24:04,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 1425 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:24:04,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1117 states. [2023-12-21 11:24:04,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1117 to 1071. [2023-12-21 11:24:04,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1071 states, 817 states have (on average 1.3733170134638923) internal successors, (1122), 829 states have internal predecessors, (1122), 162 states have call successors, (162), 91 states have call predecessors, (162), 91 states have return successors, (162), 150 states have call predecessors, (162), 162 states have call successors, (162) [2023-12-21 11:24:04,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 1446 transitions. [2023-12-21 11:24:04,249 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 1446 transitions. Word has length 86 [2023-12-21 11:24:04,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:24:04,250 INFO L495 AbstractCegarLoop]: Abstraction has 1071 states and 1446 transitions. [2023-12-21 11:24:04,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 11:24:04,250 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 1446 transitions. [2023-12-21 11:24:04,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-21 11:24:04,251 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:24:04,251 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:24:04,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-21 11:24:04,251 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:24:04,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:24:04,252 INFO L85 PathProgramCache]: Analyzing trace with hash 116448996, now seen corresponding path program 1 times [2023-12-21 11:24:04,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:24:04,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884145421] [2023-12-21 11:24:04,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:04,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:24:04,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:04,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:24:04,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:04,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 11:24:04,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:04,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-21 11:24:04,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:04,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 11:24:04,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:04,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 11:24:04,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:04,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-21 11:24:04,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:04,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 11:24:04,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:04,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 11:24:04,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:04,433 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-21 11:24:04,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:24:04,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884145421] [2023-12-21 11:24:04,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884145421] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:24:04,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:24:04,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:24:04,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994659495] [2023-12-21 11:24:04,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:24:04,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:24:04,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:24:04,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:24:04,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:24:04,435 INFO L87 Difference]: Start difference. First operand 1071 states and 1446 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-21 11:24:04,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:24:04,611 INFO L93 Difference]: Finished difference Result 2013 states and 2751 transitions. [2023-12-21 11:24:04,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 11:24:04,612 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 88 [2023-12-21 11:24:04,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:24:04,616 INFO L225 Difference]: With dead ends: 2013 [2023-12-21 11:24:04,616 INFO L226 Difference]: Without dead ends: 1169 [2023-12-21 11:24:04,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-12-21 11:24:04,619 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 197 mSDsluCounter, 1306 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 1588 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:24:04,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 1588 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:24:04,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1169 states. [2023-12-21 11:24:04,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1169 to 964. [2023-12-21 11:24:04,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 964 states, 737 states have (on average 1.3772048846675713) internal successors, (1015), 747 states have internal predecessors, (1015), 145 states have call successors, (145), 81 states have call predecessors, (145), 81 states have return successors, (145), 135 states have call predecessors, (145), 145 states have call successors, (145) [2023-12-21 11:24:04,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 964 states to 964 states and 1305 transitions. [2023-12-21 11:24:04,679 INFO L78 Accepts]: Start accepts. Automaton has 964 states and 1305 transitions. Word has length 88 [2023-12-21 11:24:04,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:24:04,679 INFO L495 AbstractCegarLoop]: Abstraction has 964 states and 1305 transitions. [2023-12-21 11:24:04,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-21 11:24:04,680 INFO L276 IsEmpty]: Start isEmpty. Operand 964 states and 1305 transitions. [2023-12-21 11:24:04,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-21 11:24:04,680 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:24:04,680 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:24:04,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-21 11:24:04,681 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:24:04,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:24:04,681 INFO L85 PathProgramCache]: Analyzing trace with hash -741171965, now seen corresponding path program 1 times [2023-12-21 11:24:04,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:24:04,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440375839] [2023-12-21 11:24:04,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:04,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:24:04,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:04,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:24:04,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:04,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 11:24:04,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:04,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-21 11:24:04,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:04,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 11:24:04,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:04,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 11:24:04,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:04,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-21 11:24:04,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:04,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-21 11:24:04,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:04,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-21 11:24:04,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:04,857 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-21 11:24:04,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:24:04,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440375839] [2023-12-21 11:24:04,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440375839] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:24:04,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:24:04,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 11:24:04,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48865821] [2023-12-21 11:24:04,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:24:04,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 11:24:04,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:24:04,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 11:24:04,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-21 11:24:04,859 INFO L87 Difference]: Start difference. First operand 964 states and 1305 transitions. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 states have internal predecessors, (66), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 11:24:05,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:24:05,307 INFO L93 Difference]: Finished difference Result 2071 states and 2845 transitions. [2023-12-21 11:24:05,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 11:24:05,308 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 states have internal predecessors, (66), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 89 [2023-12-21 11:24:05,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:24:05,312 INFO L225 Difference]: With dead ends: 2071 [2023-12-21 11:24:05,312 INFO L226 Difference]: Without dead ends: 1253 [2023-12-21 11:24:05,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2023-12-21 11:24:05,314 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 742 mSDsluCounter, 1087 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 748 SdHoareTripleChecker+Valid, 1412 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 11:24:05,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [748 Valid, 1412 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 11:24:05,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1253 states. [2023-12-21 11:24:05,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1253 to 980. [2023-12-21 11:24:05,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 980 states, 745 states have (on average 1.353020134228188) internal successors, (1008), 756 states have internal predecessors, (1008), 148 states have call successors, (148), 86 states have call predecessors, (148), 86 states have return successors, (148), 137 states have call predecessors, (148), 148 states have call successors, (148) [2023-12-21 11:24:05,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 980 states to 980 states and 1304 transitions. [2023-12-21 11:24:05,376 INFO L78 Accepts]: Start accepts. Automaton has 980 states and 1304 transitions. Word has length 89 [2023-12-21 11:24:05,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:24:05,377 INFO L495 AbstractCegarLoop]: Abstraction has 980 states and 1304 transitions. [2023-12-21 11:24:05,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 states have internal predecessors, (66), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 11:24:05,377 INFO L276 IsEmpty]: Start isEmpty. Operand 980 states and 1304 transitions. [2023-12-21 11:24:05,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-21 11:24:05,377 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:24:05,378 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:24:05,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-21 11:24:05,378 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:24:05,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:24:05,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1250316306, now seen corresponding path program 1 times [2023-12-21 11:24:05,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:24:05,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543421798] [2023-12-21 11:24:05,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:05,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:24:05,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:05,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:24:05,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:05,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:24:05,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:05,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-21 11:24:05,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:05,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-21 11:24:05,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:05,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-21 11:24:05,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:05,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 11:24:05,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:05,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 11:24:05,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:05,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 11:24:05,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:05,432 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 11:24:05,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:24:05,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543421798] [2023-12-21 11:24:05,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543421798] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:24:05,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:24:05,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:24:05,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698348820] [2023-12-21 11:24:05,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:24:05,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:24:05,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:24:05,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:24:05,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:24:05,433 INFO L87 Difference]: Start difference. First operand 980 states and 1304 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-21 11:24:05,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:24:05,570 INFO L93 Difference]: Finished difference Result 2597 states and 3474 transitions. [2023-12-21 11:24:05,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 11:24:05,570 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 90 [2023-12-21 11:24:05,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:24:05,576 INFO L225 Difference]: With dead ends: 2597 [2023-12-21 11:24:05,576 INFO L226 Difference]: Without dead ends: 1814 [2023-12-21 11:24:05,578 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 [2023-12-21 11:24:05,578 INFO L413 NwaCegarLoop]: 436 mSDtfsCounter, 198 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 1096 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:24:05,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 1096 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:24:05,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1814 states. [2023-12-21 11:24:05,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1814 to 1707. [2023-12-21 11:24:05,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1707 states, 1282 states have (on average 1.3424336973478939) internal successors, (1721), 1301 states have internal predecessors, (1721), 272 states have call successors, (272), 152 states have call predecessors, (272), 152 states have return successors, (272), 253 states have call predecessors, (272), 272 states have call successors, (272) [2023-12-21 11:24:05,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1707 states to 1707 states and 2265 transitions. [2023-12-21 11:24:05,720 INFO L78 Accepts]: Start accepts. Automaton has 1707 states and 2265 transitions. Word has length 90 [2023-12-21 11:24:05,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:24:05,721 INFO L495 AbstractCegarLoop]: Abstraction has 1707 states and 2265 transitions. [2023-12-21 11:24:05,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-21 11:24:05,721 INFO L276 IsEmpty]: Start isEmpty. Operand 1707 states and 2265 transitions. [2023-12-21 11:24:05,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-21 11:24:05,722 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:24:05,722 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:24:05,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-21 11:24:05,722 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:24:05,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:24:05,723 INFO L85 PathProgramCache]: Analyzing trace with hash -386379641, now seen corresponding path program 1 times [2023-12-21 11:24:05,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:24:05,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558617035] [2023-12-21 11:24:05,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:05,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:24:05,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:05,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:24:05,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:05,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:24:05,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:05,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-21 11:24:05,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:05,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-21 11:24:05,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:05,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-21 11:24:05,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:05,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 11:24:05,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:05,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 11:24:05,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:05,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 11:24:05,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:05,905 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-21 11:24:05,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:24:05,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558617035] [2023-12-21 11:24:05,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558617035] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:24:05,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:24:05,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:24:05,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978262004] [2023-12-21 11:24:05,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:24:05,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:24:05,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:24:05,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:24:05,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:24:05,906 INFO L87 Difference]: Start difference. First operand 1707 states and 2265 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-21 11:24:06,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:24:06,384 INFO L93 Difference]: Finished difference Result 3573 states and 4801 transitions. [2023-12-21 11:24:06,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 11:24:06,385 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 92 [2023-12-21 11:24:06,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:24:06,392 INFO L225 Difference]: With dead ends: 3573 [2023-12-21 11:24:06,393 INFO L226 Difference]: Without dead ends: 2139 [2023-12-21 11:24:06,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2023-12-21 11:24:06,396 INFO L413 NwaCegarLoop]: 359 mSDtfsCounter, 574 mSDsluCounter, 1231 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 577 SdHoareTripleChecker+Valid, 1590 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 11:24:06,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [577 Valid, 1590 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 11:24:06,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2139 states. [2023-12-21 11:24:06,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2139 to 1734. [2023-12-21 11:24:06,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1734 states, 1296 states have (on average 1.3356481481481481) internal successors, (1731), 1316 states have internal predecessors, (1731), 280 states have call successors, (280), 157 states have call predecessors, (280), 157 states have return successors, (280), 260 states have call predecessors, (280), 280 states have call successors, (280) [2023-12-21 11:24:06,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1734 states to 1734 states and 2291 transitions. [2023-12-21 11:24:06,590 INFO L78 Accepts]: Start accepts. Automaton has 1734 states and 2291 transitions. Word has length 92 [2023-12-21 11:24:06,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:24:06,590 INFO L495 AbstractCegarLoop]: Abstraction has 1734 states and 2291 transitions. [2023-12-21 11:24:06,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-21 11:24:06,590 INFO L276 IsEmpty]: Start isEmpty. Operand 1734 states and 2291 transitions. [2023-12-21 11:24:06,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-21 11:24:06,591 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:24:06,591 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:24:06,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-21 11:24:06,592 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:24:06,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:24:06,592 INFO L85 PathProgramCache]: Analyzing trace with hash 890629356, now seen corresponding path program 1 times [2023-12-21 11:24:06,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:24:06,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891620999] [2023-12-21 11:24:06,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:06,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:24:06,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:06,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:24:06,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:06,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-21 11:24:06,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:06,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-21 11:24:06,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:06,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-21 11:24:06,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:06,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 11:24:06,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:06,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-21 11:24:06,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:06,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 11:24:06,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:06,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 11:24:06,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:06,673 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 11:24:06,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:24:06,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891620999] [2023-12-21 11:24:06,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891620999] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:24:06,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:24:06,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:24:06,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325900809] [2023-12-21 11:24:06,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:24:06,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:24:06,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:24:06,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:24:06,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:24:06,675 INFO L87 Difference]: Start difference. First operand 1734 states and 2291 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-21 11:24:06,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:24:06,900 INFO L93 Difference]: Finished difference Result 4412 states and 5861 transitions. [2023-12-21 11:24:06,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 11:24:06,901 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 94 [2023-12-21 11:24:06,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:24:06,911 INFO L225 Difference]: With dead ends: 4412 [2023-12-21 11:24:06,911 INFO L226 Difference]: Without dead ends: 2994 [2023-12-21 11:24:06,915 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 [2023-12-21 11:24:06,916 INFO L413 NwaCegarLoop]: 452 mSDtfsCounter, 203 mSDsluCounter, 680 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 1132 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:24:06,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 1132 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:24:06,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2994 states. [2023-12-21 11:24:07,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2994 to 2745. [2023-12-21 11:24:07,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2745 states, 2032 states have (on average 1.3228346456692914) internal successors, (2688), 2063 states have internal predecessors, (2688), 460 states have call successors, (460), 252 states have call predecessors, (460), 252 states have return successors, (460), 429 states have call predecessors, (460), 460 states have call successors, (460) [2023-12-21 11:24:07,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2745 states to 2745 states and 3608 transitions. [2023-12-21 11:24:07,204 INFO L78 Accepts]: Start accepts. Automaton has 2745 states and 3608 transitions. Word has length 94 [2023-12-21 11:24:07,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:24:07,205 INFO L495 AbstractCegarLoop]: Abstraction has 2745 states and 3608 transitions. [2023-12-21 11:24:07,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-21 11:24:07,205 INFO L276 IsEmpty]: Start isEmpty. Operand 2745 states and 3608 transitions. [2023-12-21 11:24:07,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-21 11:24:07,207 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:24:07,208 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:24:07,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-21 11:24:07,208 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:24:07,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:24:07,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1142837102, now seen corresponding path program 1 times [2023-12-21 11:24:07,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:24:07,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357190165] [2023-12-21 11:24:07,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:07,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:24:07,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:07,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:24:07,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:07,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-21 11:24:07,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:07,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 11:24:07,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:07,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-21 11:24:07,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:07,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-21 11:24:07,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:07,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-21 11:24:07,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:07,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-21 11:24:07,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:07,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 11:24:07,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:07,309 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 11:24:07,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:24:07,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357190165] [2023-12-21 11:24:07,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357190165] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:24:07,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:24:07,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:24:07,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793711134] [2023-12-21 11:24:07,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:24:07,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:24:07,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:24:07,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:24:07,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:24:07,312 INFO L87 Difference]: Start difference. First operand 2745 states and 3608 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-21 11:24:07,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:24:07,644 INFO L93 Difference]: Finished difference Result 6428 states and 8486 transitions. [2023-12-21 11:24:07,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 11:24:07,645 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 94 [2023-12-21 11:24:07,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:24:07,670 INFO L225 Difference]: With dead ends: 6428 [2023-12-21 11:24:07,670 INFO L226 Difference]: Without dead ends: 4115 [2023-12-21 11:24:07,675 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 [2023-12-21 11:24:07,675 INFO L413 NwaCegarLoop]: 462 mSDtfsCounter, 197 mSDsluCounter, 684 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 1146 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:24:07,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 1146 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:24:07,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4115 states. [2023-12-21 11:24:07,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4115 to 3942. [2023-12-21 11:24:07,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3942 states, 2905 states have (on average 1.3180722891566266) internal successors, (3829), 2949 states have internal predecessors, (3829), 672 states have call successors, (672), 364 states have call predecessors, (672), 364 states have return successors, (672), 628 states have call predecessors, (672), 672 states have call successors, (672) [2023-12-21 11:24:07,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3942 states to 3942 states and 5173 transitions. [2023-12-21 11:24:07,944 INFO L78 Accepts]: Start accepts. Automaton has 3942 states and 5173 transitions. Word has length 94 [2023-12-21 11:24:07,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:24:07,944 INFO L495 AbstractCegarLoop]: Abstraction has 3942 states and 5173 transitions. [2023-12-21 11:24:07,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-21 11:24:07,944 INFO L276 IsEmpty]: Start isEmpty. Operand 3942 states and 5173 transitions. [2023-12-21 11:24:07,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-21 11:24:07,946 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:24:07,946 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:24:07,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-21 11:24:07,947 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:24:07,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:24:07,947 INFO L85 PathProgramCache]: Analyzing trace with hash -116500221, now seen corresponding path program 1 times [2023-12-21 11:24:07,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:24:07,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100530813] [2023-12-21 11:24:07,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:07,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:24:07,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:07,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:24:07,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:07,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 11:24:07,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:07,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-21 11:24:07,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:07,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 11:24:07,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:07,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-21 11:24:07,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:07,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-21 11:24:07,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:07,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-21 11:24:07,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:07,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-21 11:24:07,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:07,982 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 11:24:07,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:24:07,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100530813] [2023-12-21 11:24:07,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100530813] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:24:07,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:24:07,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:24:07,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124804454] [2023-12-21 11:24:07,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:24:07,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:24:07,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:24:07,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:24:07,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:24:07,985 INFO L87 Difference]: Start difference. First operand 3942 states and 5173 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-21 11:24:08,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:24:08,274 INFO L93 Difference]: Finished difference Result 7585 states and 9999 transitions. [2023-12-21 11:24:08,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:24:08,275 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 95 [2023-12-21 11:24:08,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:24:08,291 INFO L225 Difference]: With dead ends: 7585 [2023-12-21 11:24:08,291 INFO L226 Difference]: Without dead ends: 3975 [2023-12-21 11:24:08,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:24:08,297 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 7 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:24:08,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 466 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:24:08,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3975 states. [2023-12-21 11:24:08,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3975 to 3948. [2023-12-21 11:24:08,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3948 states, 2911 states have (on average 1.3174166952937134) internal successors, (3835), 2955 states have internal predecessors, (3835), 672 states have call successors, (672), 364 states have call predecessors, (672), 364 states have return successors, (672), 628 states have call predecessors, (672), 672 states have call successors, (672) [2023-12-21 11:24:08,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3948 states to 3948 states and 5179 transitions. [2023-12-21 11:24:08,574 INFO L78 Accepts]: Start accepts. Automaton has 3948 states and 5179 transitions. Word has length 95 [2023-12-21 11:24:08,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:24:08,574 INFO L495 AbstractCegarLoop]: Abstraction has 3948 states and 5179 transitions. [2023-12-21 11:24:08,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-21 11:24:08,575 INFO L276 IsEmpty]: Start isEmpty. Operand 3948 states and 5179 transitions. [2023-12-21 11:24:08,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-21 11:24:08,576 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:24:08,578 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:24:08,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-21 11:24:08,578 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:24:08,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:24:08,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1006279155, now seen corresponding path program 1 times [2023-12-21 11:24:08,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:24:08,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473553413] [2023-12-21 11:24:08,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:08,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:24:08,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:08,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:24:08,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:08,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-21 11:24:08,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:08,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 11:24:08,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:08,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-21 11:24:08,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:08,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-21 11:24:08,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:08,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-21 11:24:08,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:08,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-21 11:24:08,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:08,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 11:24:08,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:08,691 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 11:24:08,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:24:08,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473553413] [2023-12-21 11:24:08,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473553413] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:24:08,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:24:08,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:24:08,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984252587] [2023-12-21 11:24:08,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:24:08,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:24:08,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:24:08,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:24:08,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:24:08,693 INFO L87 Difference]: Start difference. First operand 3948 states and 5179 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-21 11:24:08,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:24:08,918 INFO L93 Difference]: Finished difference Result 7555 states and 9931 transitions. [2023-12-21 11:24:08,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 11:24:08,919 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 96 [2023-12-21 11:24:08,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:24:08,929 INFO L225 Difference]: With dead ends: 7555 [2023-12-21 11:24:08,929 INFO L226 Difference]: Without dead ends: 3673 [2023-12-21 11:24:08,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 11:24:08,936 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 84 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:24:08,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 710 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:24:08,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3673 states. [2023-12-21 11:24:09,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3673 to 3606. [2023-12-21 11:24:09,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3606 states, 2652 states have (on average 1.3273001508295625) internal successors, (3520), 2686 states have internal predecessors, (3520), 620 states have call successors, (620), 333 states have call predecessors, (620), 333 states have return successors, (620), 586 states have call predecessors, (620), 620 states have call successors, (620) [2023-12-21 11:24:09,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3606 states to 3606 states and 4760 transitions. [2023-12-21 11:24:09,224 INFO L78 Accepts]: Start accepts. Automaton has 3606 states and 4760 transitions. Word has length 96 [2023-12-21 11:24:09,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:24:09,224 INFO L495 AbstractCegarLoop]: Abstraction has 3606 states and 4760 transitions. [2023-12-21 11:24:09,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-21 11:24:09,224 INFO L276 IsEmpty]: Start isEmpty. Operand 3606 states and 4760 transitions. [2023-12-21 11:24:09,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-21 11:24:09,225 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:24:09,225 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:24:09,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-21 11:24:09,226 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:24:09,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:24:09,226 INFO L85 PathProgramCache]: Analyzing trace with hash 976654501, now seen corresponding path program 1 times [2023-12-21 11:24:09,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:24:09,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142839190] [2023-12-21 11:24:09,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:09,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:24:09,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:09,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:24:09,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:09,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 11:24:09,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:09,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-21 11:24:09,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:09,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 11:24:09,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:09,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-21 11:24:09,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:09,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-21 11:24:09,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:09,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-21 11:24:09,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:09,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-21 11:24:09,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:09,265 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 11:24:09,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:24:09,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142839190] [2023-12-21 11:24:09,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142839190] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:24:09,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:24:09,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:24:09,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521849990] [2023-12-21 11:24:09,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:24:09,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:24:09,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:24:09,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:24:09,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:24:09,267 INFO L87 Difference]: Start difference. First operand 3606 states and 4760 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-21 11:24:09,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:24:09,559 INFO L93 Difference]: Finished difference Result 7094 states and 9402 transitions. [2023-12-21 11:24:09,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:24:09,559 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 97 [2023-12-21 11:24:09,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:24:09,568 INFO L225 Difference]: With dead ends: 7094 [2023-12-21 11:24:09,568 INFO L226 Difference]: Without dead ends: 3657 [2023-12-21 11:24:09,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:24:09,574 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 7 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:24:09,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 464 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:24:09,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3657 states. [2023-12-21 11:24:09,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3657 to 3616. [2023-12-21 11:24:09,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3616 states, 2662 states have (on average 1.3260706235912847) internal successors, (3530), 2696 states have internal predecessors, (3530), 620 states have call successors, (620), 333 states have call predecessors, (620), 333 states have return successors, (620), 586 states have call predecessors, (620), 620 states have call successors, (620) [2023-12-21 11:24:09,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3616 states to 3616 states and 4770 transitions. [2023-12-21 11:24:09,781 INFO L78 Accepts]: Start accepts. Automaton has 3616 states and 4770 transitions. Word has length 97 [2023-12-21 11:24:09,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:24:09,781 INFO L495 AbstractCegarLoop]: Abstraction has 3616 states and 4770 transitions. [2023-12-21 11:24:09,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-21 11:24:09,781 INFO L276 IsEmpty]: Start isEmpty. Operand 3616 states and 4770 transitions. [2023-12-21 11:24:09,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-21 11:24:09,782 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:24:09,783 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:24:09,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-21 11:24:09,783 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:24:09,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:24:09,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1105968182, now seen corresponding path program 1 times [2023-12-21 11:24:09,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:24:09,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403941661] [2023-12-21 11:24:09,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:09,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:24:09,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:09,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:24:09,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:09,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 11:24:09,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:09,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-21 11:24:09,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:09,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 11:24:09,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:09,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-21 11:24:09,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:09,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-21 11:24:09,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:09,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-21 11:24:09,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:09,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-21 11:24:09,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:09,858 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 11:24:09,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:24:09,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403941661] [2023-12-21 11:24:09,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403941661] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:24:09,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:24:09,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:24:09,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254450101] [2023-12-21 11:24:09,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:24:09,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:24:09,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:24:09,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:24:09,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:24:09,859 INFO L87 Difference]: Start difference. First operand 3616 states and 4770 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-21 11:24:10,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:24:10,081 INFO L93 Difference]: Finished difference Result 7054 states and 9322 transitions. [2023-12-21 11:24:10,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 11:24:10,081 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 97 [2023-12-21 11:24:10,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:24:10,089 INFO L225 Difference]: With dead ends: 7054 [2023-12-21 11:24:10,090 INFO L226 Difference]: Without dead ends: 3547 [2023-12-21 11:24:10,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 11:24:10,096 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 66 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:24:10,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 715 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:24:10,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3547 states. [2023-12-21 11:24:10,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3547 to 2729. [2023-12-21 11:24:10,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2729 states, 2009 states have (on average 1.320059731209557) internal successors, (2652), 2028 states have internal predecessors, (2652), 469 states have call successors, (469), 250 states have call predecessors, (469), 250 states have return successors, (469), 450 states have call predecessors, (469), 469 states have call successors, (469) [2023-12-21 11:24:10,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2729 states to 2729 states and 3590 transitions. [2023-12-21 11:24:10,265 INFO L78 Accepts]: Start accepts. Automaton has 2729 states and 3590 transitions. Word has length 97 [2023-12-21 11:24:10,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:24:10,265 INFO L495 AbstractCegarLoop]: Abstraction has 2729 states and 3590 transitions. [2023-12-21 11:24:10,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-21 11:24:10,265 INFO L276 IsEmpty]: Start isEmpty. Operand 2729 states and 3590 transitions. [2023-12-21 11:24:10,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-21 11:24:10,268 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:24:10,268 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:24:10,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-21 11:24:10,268 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:24:10,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:24:10,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1294447064, now seen corresponding path program 1 times [2023-12-21 11:24:10,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:24:10,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382785436] [2023-12-21 11:24:10,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:10,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:24:10,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:10,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:24:10,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:10,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 11:24:10,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:10,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-21 11:24:10,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:10,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 11:24:10,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:10,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 11:24:10,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:10,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-21 11:24:10,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:10,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 11:24:10,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:10,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-21 11:24:10,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:10,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 11:24:10,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:10,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-21 11:24:10,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:10,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 11:24:10,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:10,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-21 11:24:10,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:10,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-21 11:24:10,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:10,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-21 11:24:10,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:10,443 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-21 11:24:10,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:24:10,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382785436] [2023-12-21 11:24:10,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382785436] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:24:10,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744890194] [2023-12-21 11:24:10,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:10,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:24:10,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:24:10,446 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) [2023-12-21 11:24:10,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-21 11:24:10,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:10,615 INFO L262 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-21 11:24:10,625 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:24:10,774 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 55 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-21 11:24:10,774 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:24:10,918 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 22 proven. 2 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-12-21 11:24:10,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744890194] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:24:10,919 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:24:10,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-12-21 11:24:10,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210626859] [2023-12-21 11:24:10,919 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:24:10,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 11:24:10,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:24:10,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 11:24:10,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-12-21 11:24:10,920 INFO L87 Difference]: Start difference. First operand 2729 states and 3590 transitions. Second operand has 13 states, 13 states have (on average 13.384615384615385) internal successors, (174), 12 states have internal predecessors, (174), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) [2023-12-21 11:24:12,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:24:12,027 INFO L93 Difference]: Finished difference Result 6512 states and 8703 transitions. [2023-12-21 11:24:12,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-21 11:24:12,027 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 13.384615384615385) internal successors, (174), 12 states have internal predecessors, (174), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) Word has length 140 [2023-12-21 11:24:12,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:24:12,036 INFO L225 Difference]: With dead ends: 6512 [2023-12-21 11:24:12,036 INFO L226 Difference]: Without dead ends: 4019 [2023-12-21 11:24:12,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 306 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=252, Invalid=938, Unknown=0, NotChecked=0, Total=1190 [2023-12-21 11:24:12,041 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 1831 mSDsluCounter, 1562 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 634 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1831 SdHoareTripleChecker+Valid, 1797 SdHoareTripleChecker+Invalid, 1071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 634 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 11:24:12,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1831 Valid, 1797 Invalid, 1071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [634 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 11:24:12,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4019 states. [2023-12-21 11:24:12,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4019 to 3462. [2023-12-21 11:24:12,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3462 states, 2553 states have (on average 1.3110066588327458) internal successors, (3347), 2577 states have internal predecessors, (3347), 585 states have call successors, (585), 323 states have call predecessors, (585), 323 states have return successors, (585), 561 states have call predecessors, (585), 585 states have call successors, (585) [2023-12-21 11:24:12,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3462 states to 3462 states and 4517 transitions. [2023-12-21 11:24:12,354 INFO L78 Accepts]: Start accepts. Automaton has 3462 states and 4517 transitions. Word has length 140 [2023-12-21 11:24:12,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:24:12,354 INFO L495 AbstractCegarLoop]: Abstraction has 3462 states and 4517 transitions. [2023-12-21 11:24:12,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 13.384615384615385) internal successors, (174), 12 states have internal predecessors, (174), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) [2023-12-21 11:24:12,355 INFO L276 IsEmpty]: Start isEmpty. Operand 3462 states and 4517 transitions. [2023-12-21 11:24:12,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-21 11:24:12,358 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:24:12,358 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:24:12,384 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-21 11:24:12,564 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,SelfDestructingSolverStorable27 [2023-12-21 11:24:12,564 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:24:12,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:24:12,565 INFO L85 PathProgramCache]: Analyzing trace with hash 348005833, now seen corresponding path program 1 times [2023-12-21 11:24:12,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:24:12,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081964579] [2023-12-21 11:24:12,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:12,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:24:12,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:12,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:24:12,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:12,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 11:24:12,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:12,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-21 11:24:12,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:12,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 11:24:12,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:12,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 11:24:12,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:12,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-21 11:24:12,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:12,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 11:24:12,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:12,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 11:24:12,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:12,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-21 11:24:12,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:12,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 11:24:12,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:12,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-21 11:24:12,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:12,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 11:24:12,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:12,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-12-21 11:24:12,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:12,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-12-21 11:24:12,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:12,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-21 11:24:12,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:12,685 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-12-21 11:24:12,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:24:12,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081964579] [2023-12-21 11:24:12,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081964579] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:24:12,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:24:12,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:24:12,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403628362] [2023-12-21 11:24:12,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:24:12,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:24:12,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:24:12,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:24:12,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:24:12,687 INFO L87 Difference]: Start difference. First operand 3462 states and 4517 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-21 11:24:13,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:24:13,475 INFO L93 Difference]: Finished difference Result 11208 states and 15187 transitions. [2023-12-21 11:24:13,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 11:24:13,475 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 149 [2023-12-21 11:24:13,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:24:13,500 INFO L225 Difference]: With dead ends: 11208 [2023-12-21 11:24:13,500 INFO L226 Difference]: Without dead ends: 8078 [2023-12-21 11:24:13,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-12-21 11:24:13,508 INFO L413 NwaCegarLoop]: 416 mSDtfsCounter, 306 mSDsluCounter, 1818 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 2234 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:24:13,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 2234 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:24:13,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8078 states. [2023-12-21 11:24:14,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8078 to 6186. [2023-12-21 11:24:14,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6186 states, 4509 states have (on average 1.309824794854735) internal successors, (5906), 4555 states have internal predecessors, (5906), 1095 states have call successors, (1095), 581 states have call predecessors, (1095), 581 states have return successors, (1095), 1049 states have call predecessors, (1095), 1095 states have call successors, (1095) [2023-12-21 11:24:14,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6186 states to 6186 states and 8096 transitions. [2023-12-21 11:24:14,247 INFO L78 Accepts]: Start accepts. Automaton has 6186 states and 8096 transitions. Word has length 149 [2023-12-21 11:24:14,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:24:14,247 INFO L495 AbstractCegarLoop]: Abstraction has 6186 states and 8096 transitions. [2023-12-21 11:24:14,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-21 11:24:14,247 INFO L276 IsEmpty]: Start isEmpty. Operand 6186 states and 8096 transitions. [2023-12-21 11:24:14,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-21 11:24:14,254 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:24:14,255 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:24:14,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-21 11:24:14,255 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:24:14,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:24:14,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1893082681, now seen corresponding path program 1 times [2023-12-21 11:24:14,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:24:14,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168026038] [2023-12-21 11:24:14,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:14,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:24:14,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:14,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:24:14,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:14,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:24:14,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:14,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-21 11:24:14,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:14,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-21 11:24:14,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:14,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-21 11:24:14,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:14,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 11:24:14,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:14,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 11:24:14,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:14,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 11:24:14,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:14,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-21 11:24:14,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:14,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 11:24:14,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:14,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-21 11:24:14,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:14,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 11:24:14,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:14,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-12-21 11:24:14,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:14,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-12-21 11:24:14,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:14,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-21 11:24:14,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:14,527 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 9 proven. 14 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-12-21 11:24:14,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:24:14,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168026038] [2023-12-21 11:24:14,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168026038] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:24:14,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190375709] [2023-12-21 11:24:14,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:14,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:24:14,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:24:14,529 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) [2023-12-21 11:24:14,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-21 11:24:14,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:14,668 INFO L262 TraceCheckSpWp]: Trace formula consists of 648 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 11:24:14,678 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:24:14,846 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 30 proven. 43 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-21 11:24:14,846 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:24:14,998 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-12-21 11:24:14,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190375709] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:24:14,998 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:24:14,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2023-12-21 11:24:14,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998261991] [2023-12-21 11:24:14,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:24:14,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-21 11:24:14,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:24:15,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-21 11:24:15,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2023-12-21 11:24:15,000 INFO L87 Difference]: Start difference. First operand 6186 states and 8096 transitions. Second operand has 16 states, 16 states have (on average 11.375) internal successors, (182), 14 states have internal predecessors, (182), 6 states have call successors, (43), 4 states have call predecessors, (43), 7 states have return successors, (42), 8 states have call predecessors, (42), 6 states have call successors, (42) [2023-12-21 11:24:20,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:24:20,630 INFO L93 Difference]: Finished difference Result 26356 states and 35399 transitions. [2023-12-21 11:24:20,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2023-12-21 11:24:20,630 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.375) internal successors, (182), 14 states have internal predecessors, (182), 6 states have call successors, (43), 4 states have call predecessors, (43), 7 states have return successors, (42), 8 states have call predecessors, (42), 6 states have call successors, (42) Word has length 149 [2023-12-21 11:24:20,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:24:20,680 INFO L225 Difference]: With dead ends: 26356 [2023-12-21 11:24:20,681 INFO L226 Difference]: Without dead ends: 20432 [2023-12-21 11:24:20,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 349 SyntacticMatches, 4 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4167 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1651, Invalid=10559, Unknown=0, NotChecked=0, Total=12210 [2023-12-21 11:24:20,694 INFO L413 NwaCegarLoop]: 981 mSDtfsCounter, 4875 mSDsluCounter, 7481 mSDsCounter, 0 mSdLazyCounter, 2316 mSolverCounterSat, 2190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4875 SdHoareTripleChecker+Valid, 8462 SdHoareTripleChecker+Invalid, 4506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2190 IncrementalHoareTripleChecker+Valid, 2316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-21 11:24:20,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4875 Valid, 8462 Invalid, 4506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2190 Valid, 2316 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-21 11:24:20,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20432 states. [2023-12-21 11:24:21,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20432 to 8225. [2023-12-21 11:24:21,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8225 states, 6032 states have (on average 1.3123342175066313) internal successors, (7916), 6090 states have internal predecessors, (7916), 1423 states have call successors, (1423), 769 states have call predecessors, (1423), 769 states have return successors, (1423), 1365 states have call predecessors, (1423), 1423 states have call successors, (1423) [2023-12-21 11:24:21,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8225 states to 8225 states and 10762 transitions. [2023-12-21 11:24:21,755 INFO L78 Accepts]: Start accepts. Automaton has 8225 states and 10762 transitions. Word has length 149 [2023-12-21 11:24:21,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:24:21,756 INFO L495 AbstractCegarLoop]: Abstraction has 8225 states and 10762 transitions. [2023-12-21 11:24:21,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.375) internal successors, (182), 14 states have internal predecessors, (182), 6 states have call successors, (43), 4 states have call predecessors, (43), 7 states have return successors, (42), 8 states have call predecessors, (42), 6 states have call successors, (42) [2023-12-21 11:24:21,756 INFO L276 IsEmpty]: Start isEmpty. Operand 8225 states and 10762 transitions. [2023-12-21 11:24:21,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-21 11:24:21,767 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:24:21,767 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:24:21,791 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-21 11:24:21,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:24:21,973 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:24:21,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:24:21,973 INFO L85 PathProgramCache]: Analyzing trace with hash 237766407, now seen corresponding path program 1 times [2023-12-21 11:24:21,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:24:21,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606241536] [2023-12-21 11:24:21,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:21,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:24:22,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:22,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:24:22,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:22,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:24:22,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:22,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-21 11:24:22,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:22,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-21 11:24:22,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:22,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 11:24:22,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:22,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 11:24:22,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:22,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 11:24:22,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:22,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 11:24:22,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:22,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 11:24:22,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:22,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-21 11:24:22,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:22,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-21 11:24:22,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:22,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-21 11:24:22,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:22,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-21 11:24:22,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:22,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-21 11:24:22,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:22,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-12-21 11:24:22,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:22,190 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 14 proven. 10 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-12-21 11:24:22,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:24:22,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606241536] [2023-12-21 11:24:22,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606241536] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:24:22,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793422328] [2023-12-21 11:24:22,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:22,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:24:22,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:24:22,192 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) [2023-12-21 11:24:22,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-21 11:24:22,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:22,361 INFO L262 TraceCheckSpWp]: Trace formula consists of 653 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 11:24:22,370 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:24:22,488 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 49 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 11:24:22,488 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:24:22,560 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-12-21 11:24:22,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793422328] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-21 11:24:22,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-21 11:24:22,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 7] total 13 [2023-12-21 11:24:22,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649741341] [2023-12-21 11:24:22,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:24:22,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 11:24:22,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:24:22,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 11:24:22,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-12-21 11:24:22,562 INFO L87 Difference]: Start difference. First operand 8225 states and 10762 transitions. Second operand has 5 states, 4 states have (on average 21.5) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-21 11:24:23,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:24:23,062 INFO L93 Difference]: Finished difference Result 13455 states and 17656 transitions. [2023-12-21 11:24:23,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 11:24:23,063 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 21.5) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 153 [2023-12-21 11:24:23,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:24:23,077 INFO L225 Difference]: With dead ends: 13455 [2023-12-21 11:24:23,078 INFO L226 Difference]: Without dead ends: 5416 [2023-12-21 11:24:23,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-12-21 11:24:23,089 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 0 mSDsluCounter, 723 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:24:23,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 968 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:24:23,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5416 states. [2023-12-21 11:24:23,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5416 to 5194. [2023-12-21 11:24:23,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5194 states, 3812 states have (on average 1.3113850996852046) internal successors, (4999), 3846 states have internal predecessors, (4999), 901 states have call successors, (901), 480 states have call predecessors, (901), 480 states have return successors, (901), 867 states have call predecessors, (901), 901 states have call successors, (901) [2023-12-21 11:24:23,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5194 states to 5194 states and 6801 transitions. [2023-12-21 11:24:23,623 INFO L78 Accepts]: Start accepts. Automaton has 5194 states and 6801 transitions. Word has length 153 [2023-12-21 11:24:23,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:24:23,623 INFO L495 AbstractCegarLoop]: Abstraction has 5194 states and 6801 transitions. [2023-12-21 11:24:23,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 21.5) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-21 11:24:23,623 INFO L276 IsEmpty]: Start isEmpty. Operand 5194 states and 6801 transitions. [2023-12-21 11:24:23,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-21 11:24:23,644 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:24:23,645 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:24:23,666 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-21 11:24:23,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:24:23,846 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:24:23,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:24:23,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1947695568, now seen corresponding path program 1 times [2023-12-21 11:24:23,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:24:23,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527534907] [2023-12-21 11:24:23,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:23,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:24:23,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:24,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:24:24,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:24,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:24:24,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:24,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-21 11:24:24,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:24,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-21 11:24:24,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:24,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 11:24:24,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:24,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 11:24:24,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:24,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 11:24:24,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:24,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 11:24:24,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:24,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 11:24:24,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:24,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-21 11:24:24,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:24,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 11:24:24,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:24,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-21 11:24:24,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:24,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-12-21 11:24:24,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:24,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-21 11:24:24,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:24,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-21 11:24:24,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:24,095 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-12-21 11:24:24,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:24:24,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527534907] [2023-12-21 11:24:24,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527534907] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:24:24,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449318735] [2023-12-21 11:24:24,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:24,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:24:24,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:24:24,096 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) [2023-12-21 11:24:24,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-21 11:24:24,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:24,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 670 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-21 11:24:24,249 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:24:24,556 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 57 proven. 18 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-21 11:24:24,556 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:24:24,874 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-12-21 11:24:24,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449318735] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:24:24,874 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:24:24,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 8] total 21 [2023-12-21 11:24:24,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339126506] [2023-12-21 11:24:24,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:24:24,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-21 11:24:24,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:24:24,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-21 11:24:24,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2023-12-21 11:24:24,877 INFO L87 Difference]: Start difference. First operand 5194 states and 6801 transitions. Second operand has 21 states, 21 states have (on average 11.285714285714286) internal successors, (237), 21 states have internal predecessors, (237), 9 states have call successors, (41), 5 states have call predecessors, (41), 5 states have return successors, (40), 9 states have call predecessors, (40), 9 states have call successors, (40) [2023-12-21 11:24:29,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:24:29,261 INFO L93 Difference]: Finished difference Result 14150 states and 18660 transitions. [2023-12-21 11:24:29,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2023-12-21 11:24:29,261 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 11.285714285714286) internal successors, (237), 21 states have internal predecessors, (237), 9 states have call successors, (41), 5 states have call predecessors, (41), 5 states have return successors, (40), 9 states have call predecessors, (40), 9 states have call successors, (40) Word has length 154 [2023-12-21 11:24:29,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:24:29,284 INFO L225 Difference]: With dead ends: 14150 [2023-12-21 11:24:29,284 INFO L226 Difference]: Without dead ends: 9197 [2023-12-21 11:24:29,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 360 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10436 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=3228, Invalid=22532, Unknown=0, NotChecked=0, Total=25760 [2023-12-21 11:24:29,297 INFO L413 NwaCegarLoop]: 354 mSDtfsCounter, 3667 mSDsluCounter, 3170 mSDsCounter, 0 mSdLazyCounter, 1953 mSolverCounterSat, 1201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3667 SdHoareTripleChecker+Valid, 3524 SdHoareTripleChecker+Invalid, 3154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1201 IncrementalHoareTripleChecker+Valid, 1953 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-21 11:24:29,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3667 Valid, 3524 Invalid, 3154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1201 Valid, 1953 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-21 11:24:29,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9197 states. [2023-12-21 11:24:30,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9197 to 8194. [2023-12-21 11:24:30,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8194 states, 6085 states have (on average 1.3101068200493016) internal successors, (7972), 6135 states have internal predecessors, (7972), 1358 states have call successors, (1358), 750 states have call predecessors, (1358), 750 states have return successors, (1358), 1308 states have call predecessors, (1358), 1358 states have call successors, (1358) [2023-12-21 11:24:30,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8194 states to 8194 states and 10688 transitions. [2023-12-21 11:24:30,111 INFO L78 Accepts]: Start accepts. Automaton has 8194 states and 10688 transitions. Word has length 154 [2023-12-21 11:24:30,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:24:30,112 INFO L495 AbstractCegarLoop]: Abstraction has 8194 states and 10688 transitions. [2023-12-21 11:24:30,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 11.285714285714286) internal successors, (237), 21 states have internal predecessors, (237), 9 states have call successors, (41), 5 states have call predecessors, (41), 5 states have return successors, (40), 9 states have call predecessors, (40), 9 states have call successors, (40) [2023-12-21 11:24:30,112 INFO L276 IsEmpty]: Start isEmpty. Operand 8194 states and 10688 transitions. [2023-12-21 11:24:30,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-21 11:24:30,120 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:24:30,120 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:24:30,127 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-21 11:24:30,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:24:30,327 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:24:30,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:24:30,328 INFO L85 PathProgramCache]: Analyzing trace with hash 986746151, now seen corresponding path program 1 times [2023-12-21 11:24:30,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:24:30,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151898624] [2023-12-21 11:24:30,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:30,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:24:30,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:30,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:24:30,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:30,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:24:30,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:30,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-21 11:24:30,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:30,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-21 11:24:30,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:30,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 11:24:30,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:30,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 11:24:30,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:30,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 11:24:30,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:30,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 11:24:30,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:30,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 11:24:30,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:30,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-21 11:24:30,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:30,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 11:24:30,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:30,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-21 11:24:30,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:30,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-12-21 11:24:30,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:30,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-21 11:24:30,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:30,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-21 11:24:30,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:30,868 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 22 proven. 2 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-12-21 11:24:30,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:24:30,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151898624] [2023-12-21 11:24:30,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151898624] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:24:30,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843790836] [2023-12-21 11:24:30,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:30,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:24:30,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:24:30,869 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:24:30,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-21 11:24:31,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:31,010 INFO L262 TraceCheckSpWp]: Trace formula consists of 668 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-21 11:24:31,014 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:24:31,616 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 70 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-21 11:24:31,616 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:24:32,222 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 13 proven. 11 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-12-21 11:24:32,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [843790836] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:24:32,223 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:24:32,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 12] total 27 [2023-12-21 11:24:32,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453120463] [2023-12-21 11:24:32,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:24:32,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-21 11:24:32,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:24:32,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-21 11:24:32,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=581, Unknown=0, NotChecked=0, Total=702 [2023-12-21 11:24:32,224 INFO L87 Difference]: Start difference. First operand 8194 states and 10688 transitions. Second operand has 27 states, 27 states have (on average 8.407407407407407) internal successors, (227), 27 states have internal predecessors, (227), 10 states have call successors, (41), 5 states have call predecessors, (41), 5 states have return successors, (40), 10 states have call predecessors, (40), 10 states have call successors, (40) [2023-12-21 11:24:38,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:24:38,066 INFO L93 Difference]: Finished difference Result 16964 states and 22173 transitions. [2023-12-21 11:24:38,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2023-12-21 11:24:38,067 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 8.407407407407407) internal successors, (227), 27 states have internal predecessors, (227), 10 states have call successors, (41), 5 states have call predecessors, (41), 5 states have return successors, (40), 10 states have call predecessors, (40), 10 states have call successors, (40) Word has length 154 [2023-12-21 11:24:38,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:24:38,084 INFO L225 Difference]: With dead ends: 16964 [2023-12-21 11:24:38,084 INFO L226 Difference]: Without dead ends: 9022 [2023-12-21 11:24:38,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4135 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=2131, Invalid=9425, Unknown=0, NotChecked=0, Total=11556 [2023-12-21 11:24:38,094 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 4243 mSDsluCounter, 2252 mSDsCounter, 0 mSdLazyCounter, 1539 mSolverCounterSat, 1620 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4243 SdHoareTripleChecker+Valid, 2526 SdHoareTripleChecker+Invalid, 3159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1620 IncrementalHoareTripleChecker+Valid, 1539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-21 11:24:38,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4243 Valid, 2526 Invalid, 3159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1620 Valid, 1539 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-21 11:24:38,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9022 states. [2023-12-21 11:24:39,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9022 to 8795. [2023-12-21 11:24:39,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8795 states, 6532 states have (on average 1.308940600122474) internal successors, (8550), 6586 states have internal predecessors, (8550), 1454 states have call successors, (1454), 808 states have call predecessors, (1454), 808 states have return successors, (1454), 1400 states have call predecessors, (1454), 1454 states have call successors, (1454) [2023-12-21 11:24:39,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8795 states to 8795 states and 11458 transitions. [2023-12-21 11:24:39,072 INFO L78 Accepts]: Start accepts. Automaton has 8795 states and 11458 transitions. Word has length 154 [2023-12-21 11:24:39,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:24:39,073 INFO L495 AbstractCegarLoop]: Abstraction has 8795 states and 11458 transitions. [2023-12-21 11:24:39,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 8.407407407407407) internal successors, (227), 27 states have internal predecessors, (227), 10 states have call successors, (41), 5 states have call predecessors, (41), 5 states have return successors, (40), 10 states have call predecessors, (40), 10 states have call successors, (40) [2023-12-21 11:24:39,073 INFO L276 IsEmpty]: Start isEmpty. Operand 8795 states and 11458 transitions. [2023-12-21 11:24:39,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-21 11:24:39,077 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:24:39,078 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:24:39,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-21 11:24:39,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-12-21 11:24:39,283 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:24:39,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:24:39,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1267215363, now seen corresponding path program 1 times [2023-12-21 11:24:39,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:24:39,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191735918] [2023-12-21 11:24:39,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:39,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:24:39,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:39,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:24:39,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:39,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:24:39,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:39,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-21 11:24:39,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:39,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-21 11:24:39,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:39,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-21 11:24:39,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:39,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 11:24:39,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:39,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 11:24:39,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:39,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 11:24:39,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:39,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-21 11:24:39,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:39,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-21 11:24:39,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:39,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-21 11:24:39,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:39,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-12-21 11:24:39,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:39,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-12-21 11:24:39,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:39,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-12-21 11:24:39,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:39,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-21 11:24:39,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:39,426 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 14 proven. 25 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2023-12-21 11:24:39,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:24:39,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191735918] [2023-12-21 11:24:39,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191735918] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:24:39,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286357065] [2023-12-21 11:24:39,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:39,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:24:39,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:24:39,428 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:24:39,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-21 11:24:39,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:39,560 INFO L262 TraceCheckSpWp]: Trace formula consists of 670 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-21 11:24:39,563 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:24:39,701 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 8 proven. 84 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-21 11:24:39,702 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:24:39,824 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 14 proven. 25 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2023-12-21 11:24:39,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286357065] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:24:39,825 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:24:39,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 10 [2023-12-21 11:24:39,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527689081] [2023-12-21 11:24:39,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:24:39,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 11:24:39,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:24:39,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 11:24:39,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-12-21 11:24:39,826 INFO L87 Difference]: Start difference. First operand 8795 states and 11458 transitions. Second operand has 10 states, 10 states have (on average 14.2) internal successors, (142), 9 states have internal predecessors, (142), 4 states have call successors, (32), 5 states have call predecessors, (32), 7 states have return successors, (31), 4 states have call predecessors, (31), 3 states have call successors, (31) [2023-12-21 11:24:41,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:24:41,315 INFO L93 Difference]: Finished difference Result 21882 states and 28284 transitions. [2023-12-21 11:24:41,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-21 11:24:41,315 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.2) internal successors, (142), 9 states have internal predecessors, (142), 4 states have call successors, (32), 5 states have call predecessors, (32), 7 states have return successors, (31), 4 states have call predecessors, (31), 3 states have call successors, (31) Word has length 156 [2023-12-21 11:24:41,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:24:41,344 INFO L225 Difference]: With dead ends: 21882 [2023-12-21 11:24:41,344 INFO L226 Difference]: Without dead ends: 13339 [2023-12-21 11:24:41,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 338 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2023-12-21 11:24:41,356 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 330 mSDsluCounter, 1970 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 2253 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:24:41,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 2253 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:24:41,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13339 states. [2023-12-21 11:24:42,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13339 to 11284. [2023-12-21 11:24:42,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11284 states, 8449 states have (on average 1.297076577109717) internal successors, (10959), 8519 states have internal predecessors, (10959), 1791 states have call successors, (1791), 1043 states have call predecessors, (1791), 1043 states have return successors, (1791), 1721 states have call predecessors, (1791), 1791 states have call successors, (1791) [2023-12-21 11:24:42,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11284 states to 11284 states and 14541 transitions. [2023-12-21 11:24:42,617 INFO L78 Accepts]: Start accepts. Automaton has 11284 states and 14541 transitions. Word has length 156 [2023-12-21 11:24:42,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:24:42,618 INFO L495 AbstractCegarLoop]: Abstraction has 11284 states and 14541 transitions. [2023-12-21 11:24:42,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.2) internal successors, (142), 9 states have internal predecessors, (142), 4 states have call successors, (32), 5 states have call predecessors, (32), 7 states have return successors, (31), 4 states have call predecessors, (31), 3 states have call successors, (31) [2023-12-21 11:24:42,618 INFO L276 IsEmpty]: Start isEmpty. Operand 11284 states and 14541 transitions. [2023-12-21 11:24:42,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-21 11:24:42,624 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:24:42,625 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:24:42,642 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-21 11:24:42,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:24:42,830 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:24:42,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:24:42,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1617121978, now seen corresponding path program 1 times [2023-12-21 11:24:42,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:24:42,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618718583] [2023-12-21 11:24:42,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:42,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:24:42,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:42,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:24:42,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:42,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:24:42,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:42,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-21 11:24:42,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:42,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-21 11:24:42,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:42,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-21 11:24:42,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:42,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 11:24:42,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:42,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 11:24:42,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:42,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 11:24:42,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:42,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-21 11:24:42,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:42,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-21 11:24:42,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:42,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-21 11:24:42,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:42,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-12-21 11:24:42,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:42,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-12-21 11:24:42,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:42,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-12-21 11:24:42,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:42,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-21 11:24:42,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:42,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-12-21 11:24:42,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:43,006 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-12-21 11:24:43,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:24:43,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618718583] [2023-12-21 11:24:43,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618718583] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:24:43,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:24:43,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:24:43,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935408585] [2023-12-21 11:24:43,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:24:43,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:24:43,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:24:43,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:24:43,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:24:43,008 INFO L87 Difference]: Start difference. First operand 11284 states and 14541 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-21 11:24:45,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:24:45,228 INFO L93 Difference]: Finished difference Result 26657 states and 34886 transitions. [2023-12-21 11:24:45,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 11:24:45,229 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 158 [2023-12-21 11:24:45,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:24:45,266 INFO L225 Difference]: With dead ends: 26657 [2023-12-21 11:24:45,266 INFO L226 Difference]: Without dead ends: 18072 [2023-12-21 11:24:45,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-12-21 11:24:45,277 INFO L413 NwaCegarLoop]: 389 mSDtfsCounter, 262 mSDsluCounter, 1720 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 2109 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:24:45,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 2109 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:24:45,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18072 states. [2023-12-21 11:24:47,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18072 to 14419. [2023-12-21 11:24:47,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14419 states, 10707 states have (on average 1.285140562248996) internal successors, (13760), 10809 states have internal predecessors, (13760), 2348 states have call successors, (2348), 1363 states have call predecessors, (2348), 1363 states have return successors, (2348), 2246 states have call predecessors, (2348), 2348 states have call successors, (2348) [2023-12-21 11:24:47,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14419 states to 14419 states and 18456 transitions. [2023-12-21 11:24:47,073 INFO L78 Accepts]: Start accepts. Automaton has 14419 states and 18456 transitions. Word has length 158 [2023-12-21 11:24:47,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:24:47,073 INFO L495 AbstractCegarLoop]: Abstraction has 14419 states and 18456 transitions. [2023-12-21 11:24:47,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-21 11:24:47,073 INFO L276 IsEmpty]: Start isEmpty. Operand 14419 states and 18456 transitions. [2023-12-21 11:24:47,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-12-21 11:24:47,079 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:24:47,079 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:24:47,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-12-21 11:24:47,079 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:24:47,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:24:47,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1138157467, now seen corresponding path program 1 times [2023-12-21 11:24:47,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:24:47,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639651847] [2023-12-21 11:24:47,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:47,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:24:47,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:47,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:24:47,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:47,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:24:47,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:47,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-21 11:24:47,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:47,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-21 11:24:47,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:47,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-21 11:24:47,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:47,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 11:24:47,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:47,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 11:24:47,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:47,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 11:24:47,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:47,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-21 11:24:47,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:47,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-21 11:24:47,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:47,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 11:24:47,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:47,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-21 11:24:47,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:47,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-12-21 11:24:47,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:47,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-21 11:24:47,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:47,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-12-21 11:24:47,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:47,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-21 11:24:47,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:47,352 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 19 proven. 11 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-12-21 11:24:47,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:24:47,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639651847] [2023-12-21 11:24:47,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639651847] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:24:47,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030748557] [2023-12-21 11:24:47,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:47,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:24:47,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:24:47,353 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:24:47,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-21 11:24:47,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:47,499 INFO L262 TraceCheckSpWp]: Trace formula consists of 684 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-21 11:24:47,502 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:24:47,581 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 42 proven. 4 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-21 11:24:47,581 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:24:47,656 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-12-21 11:24:47,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030748557] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:24:47,656 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:24:47,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-12-21 11:24:47,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783336899] [2023-12-21 11:24:47,656 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:24:47,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 11:24:47,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:24:47,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 11:24:47,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-12-21 11:24:47,658 INFO L87 Difference]: Start difference. First operand 14419 states and 18456 transitions. Second operand has 13 states, 13 states have (on average 13.538461538461538) internal successors, (176), 12 states have internal predecessors, (176), 6 states have call successors, (36), 4 states have call predecessors, (36), 6 states have return successors, (36), 7 states have call predecessors, (36), 6 states have call successors, (36) [2023-12-21 11:24:50,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:24:50,935 INFO L93 Difference]: Finished difference Result 32380 states and 42511 transitions. [2023-12-21 11:24:50,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-21 11:24:50,935 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 13.538461538461538) internal successors, (176), 12 states have internal predecessors, (176), 6 states have call successors, (36), 4 states have call predecessors, (36), 6 states have return successors, (36), 7 states have call predecessors, (36), 6 states have call successors, (36) Word has length 159 [2023-12-21 11:24:50,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:24:50,979 INFO L225 Difference]: With dead ends: 32380 [2023-12-21 11:24:50,979 INFO L226 Difference]: Without dead ends: 18129 [2023-12-21 11:24:50,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 352 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=252, Invalid=938, Unknown=0, NotChecked=0, Total=1190 [2023-12-21 11:24:50,997 INFO L413 NwaCegarLoop]: 407 mSDtfsCounter, 1078 mSDsluCounter, 3010 mSDsCounter, 0 mSdLazyCounter, 863 mSolverCounterSat, 390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1078 SdHoareTripleChecker+Valid, 3417 SdHoareTripleChecker+Invalid, 1253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 390 IncrementalHoareTripleChecker+Valid, 863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 11:24:50,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1078 Valid, 3417 Invalid, 1253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [390 Valid, 863 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 11:24:51,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18129 states. [2023-12-21 11:24:53,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18129 to 14641. [2023-12-21 11:24:53,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14641 states, 10889 states have (on average 1.2827624207916246) internal successors, (13968), 10991 states have internal predecessors, (13968), 2368 states have call successors, (2368), 1383 states have call predecessors, (2368), 1383 states have return successors, (2368), 2266 states have call predecessors, (2368), 2368 states have call successors, (2368) [2023-12-21 11:24:53,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14641 states to 14641 states and 18704 transitions. [2023-12-21 11:24:53,093 INFO L78 Accepts]: Start accepts. Automaton has 14641 states and 18704 transitions. Word has length 159 [2023-12-21 11:24:53,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:24:53,093 INFO L495 AbstractCegarLoop]: Abstraction has 14641 states and 18704 transitions. [2023-12-21 11:24:53,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 13.538461538461538) internal successors, (176), 12 states have internal predecessors, (176), 6 states have call successors, (36), 4 states have call predecessors, (36), 6 states have return successors, (36), 7 states have call predecessors, (36), 6 states have call successors, (36) [2023-12-21 11:24:53,093 INFO L276 IsEmpty]: Start isEmpty. Operand 14641 states and 18704 transitions. [2023-12-21 11:24:53,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-12-21 11:24:53,100 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:24:53,100 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:24:53,107 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-21 11:24:53,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:24:53,308 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:24:53,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:24:53,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1358451335, now seen corresponding path program 1 times [2023-12-21 11:24:53,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:24:53,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595266668] [2023-12-21 11:24:53,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:53,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:24:53,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:53,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:24:53,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:53,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:24:53,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:53,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-21 11:24:53,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:53,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-21 11:24:53,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:53,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-21 11:24:53,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:53,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 11:24:53,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:53,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 11:24:53,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:53,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 11:24:53,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:53,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 11:24:53,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:53,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-21 11:24:53,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:53,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-21 11:24:53,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:53,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-12-21 11:24:53,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:53,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-12-21 11:24:53,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:53,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-21 11:24:53,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:53,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-21 11:24:53,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:53,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2023-12-21 11:24:53,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:53,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-21 11:24:53,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:53,741 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 26 proven. 4 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2023-12-21 11:24:53,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:24:53,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595266668] [2023-12-21 11:24:53,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595266668] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:24:53,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486843352] [2023-12-21 11:24:53,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:53,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:24:53,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:24:53,743 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:24:53,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-21 11:24:53,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:53,887 INFO L262 TraceCheckSpWp]: Trace formula consists of 704 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-21 11:24:53,890 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:24:54,001 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 62 proven. 4 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-21 11:24:54,001 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:24:54,136 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 19 proven. 8 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2023-12-21 11:24:54,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486843352] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:24:54,136 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:24:54,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 15 [2023-12-21 11:24:54,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128730510] [2023-12-21 11:24:54,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:24:54,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-21 11:24:54,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:24:54,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-21 11:24:54,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-12-21 11:24:54,138 INFO L87 Difference]: Start difference. First operand 14641 states and 18704 transitions. Second operand has 15 states, 15 states have (on average 12.133333333333333) internal successors, (182), 14 states have internal predecessors, (182), 6 states have call successors, (38), 4 states have call predecessors, (38), 6 states have return successors, (38), 7 states have call predecessors, (38), 6 states have call successors, (38) [2023-12-21 11:24:58,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:24:58,120 INFO L93 Difference]: Finished difference Result 33142 states and 43441 transitions. [2023-12-21 11:24:58,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-21 11:24:58,120 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 12.133333333333333) internal successors, (182), 14 states have internal predecessors, (182), 6 states have call successors, (38), 4 states have call predecessors, (38), 6 states have return successors, (38), 7 states have call predecessors, (38), 6 states have call successors, (38) Word has length 170 [2023-12-21 11:24:58,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:24:58,174 INFO L225 Difference]: With dead ends: 33142 [2023-12-21 11:24:58,175 INFO L226 Difference]: Without dead ends: 18669 [2023-12-21 11:24:58,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 376 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 399 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=268, Invalid=1538, Unknown=0, NotChecked=0, Total=1806 [2023-12-21 11:24:58,231 INFO L413 NwaCegarLoop]: 446 mSDtfsCounter, 1096 mSDsluCounter, 4275 mSDsCounter, 0 mSdLazyCounter, 1772 mSolverCounterSat, 384 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1096 SdHoareTripleChecker+Valid, 4721 SdHoareTripleChecker+Invalid, 2156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 384 IncrementalHoareTripleChecker+Valid, 1772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 11:24:58,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1096 Valid, 4721 Invalid, 2156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [384 Valid, 1772 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 11:24:58,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18669 states. [2023-12-21 11:25:00,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18669 to 14776. [2023-12-21 11:25:00,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14776 states, 10994 states have (on average 1.2821539021284336) internal successors, (14096), 11098 states have internal predecessors, (14096), 2385 states have call successors, (2385), 1396 states have call predecessors, (2385), 1396 states have return successors, (2385), 2281 states have call predecessors, (2385), 2385 states have call successors, (2385) [2023-12-21 11:25:00,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14776 states to 14776 states and 18866 transitions. [2023-12-21 11:25:00,317 INFO L78 Accepts]: Start accepts. Automaton has 14776 states and 18866 transitions. Word has length 170 [2023-12-21 11:25:00,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:25:00,317 INFO L495 AbstractCegarLoop]: Abstraction has 14776 states and 18866 transitions. [2023-12-21 11:25:00,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 12.133333333333333) internal successors, (182), 14 states have internal predecessors, (182), 6 states have call successors, (38), 4 states have call predecessors, (38), 6 states have return successors, (38), 7 states have call predecessors, (38), 6 states have call successors, (38) [2023-12-21 11:25:00,318 INFO L276 IsEmpty]: Start isEmpty. Operand 14776 states and 18866 transitions. [2023-12-21 11:25:00,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-12-21 11:25:00,323 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:25:00,323 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:25:00,329 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-21 11:25:00,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-12-21 11:25:00,529 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:25:00,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:25:00,530 INFO L85 PathProgramCache]: Analyzing trace with hash -220232830, now seen corresponding path program 1 times [2023-12-21 11:25:00,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:25:00,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336371621] [2023-12-21 11:25:00,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:25:00,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:25:00,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:00,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:25:00,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:00,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:25:00,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:00,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-21 11:25:00,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:00,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-21 11:25:00,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:00,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-21 11:25:00,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:00,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 11:25:00,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:00,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 11:25:00,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:00,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 11:25:00,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:00,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-21 11:25:00,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:00,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 11:25:00,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:00,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-21 11:25:00,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:00,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-21 11:25:00,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:00,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-21 11:25:00,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:00,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-21 11:25:00,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:00,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-12-21 11:25:00,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:00,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-12-21 11:25:00,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:00,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-12-21 11:25:00,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:00,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-12-21 11:25:00,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:00,795 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2023-12-21 11:25:00,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:25:00,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336371621] [2023-12-21 11:25:00,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336371621] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:25:00,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314173268] [2023-12-21 11:25:00,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:25:00,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:25:00,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:25:00,797 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:25:00,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-21 11:25:00,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:00,967 INFO L262 TraceCheckSpWp]: Trace formula consists of 722 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-21 11:25:00,970 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:25:01,065 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-12-21 11:25:01,065 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 11:25:01,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314173268] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:25:01,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 11:25:01,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2023-12-21 11:25:01,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922283947] [2023-12-21 11:25:01,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:25:01,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:25:01,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:25:01,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:25:01,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-12-21 11:25:01,067 INFO L87 Difference]: Start difference. First operand 14776 states and 18866 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 6 states have internal predecessors, (111), 3 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2023-12-21 11:25:03,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:25:03,972 INFO L93 Difference]: Finished difference Result 31576 states and 41204 transitions. [2023-12-21 11:25:03,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 11:25:03,972 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 6 states have internal predecessors, (111), 3 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) Word has length 177 [2023-12-21 11:25:03,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:25:04,010 INFO L225 Difference]: With dead ends: 31576 [2023-12-21 11:25:04,010 INFO L226 Difference]: Without dead ends: 17448 [2023-12-21 11:25:04,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2023-12-21 11:25:04,026 INFO L413 NwaCegarLoop]: 408 mSDtfsCounter, 501 mSDsluCounter, 1125 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 1533 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 11:25:04,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [501 Valid, 1533 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 11:25:04,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17448 states. [2023-12-21 11:25:06,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17448 to 14776. [2023-12-21 11:25:06,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14776 states, 10994 states have (on average 1.2750591231580863) internal successors, (14018), 11098 states have internal predecessors, (14018), 2385 states have call successors, (2385), 1396 states have call predecessors, (2385), 1396 states have return successors, (2385), 2281 states have call predecessors, (2385), 2385 states have call successors, (2385) [2023-12-21 11:25:06,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14776 states to 14776 states and 18788 transitions. [2023-12-21 11:25:06,206 INFO L78 Accepts]: Start accepts. Automaton has 14776 states and 18788 transitions. Word has length 177 [2023-12-21 11:25:06,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:25:06,206 INFO L495 AbstractCegarLoop]: Abstraction has 14776 states and 18788 transitions. [2023-12-21 11:25:06,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 6 states have internal predecessors, (111), 3 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2023-12-21 11:25:06,207 INFO L276 IsEmpty]: Start isEmpty. Operand 14776 states and 18788 transitions. [2023-12-21 11:25:06,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-12-21 11:25:06,212 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:25:06,213 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:25:06,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-21 11:25:06,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-12-21 11:25:06,419 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:25:06,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:25:06,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1439086500, now seen corresponding path program 1 times [2023-12-21 11:25:06,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:25:06,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760059571] [2023-12-21 11:25:06,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:25:06,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:25:06,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:06,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:25:06,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:06,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:25:06,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:06,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-21 11:25:06,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:06,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-21 11:25:06,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:06,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 11:25:06,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:06,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 11:25:06,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:06,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 11:25:06,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:06,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 11:25:06,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:06,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 11:25:06,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:06,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 11:25:06,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:06,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 11:25:06,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:06,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 11:25:06,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:06,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-12-21 11:25:06,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:06,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-12-21 11:25:06,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:06,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-12-21 11:25:06,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:06,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2023-12-21 11:25:06,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:06,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2023-12-21 11:25:06,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:06,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-12-21 11:25:06,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:06,863 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2023-12-21 11:25:06,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:25:06,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760059571] [2023-12-21 11:25:06,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760059571] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:25:06,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659869248] [2023-12-21 11:25:06,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:25:06,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:25:06,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:25:06,880 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:25:06,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-21 11:25:07,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:07,023 INFO L262 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 11:25:07,026 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:25:07,232 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 60 proven. 59 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-21 11:25:07,232 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:25:07,371 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 19 proven. 25 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-12-21 11:25:07,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [659869248] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:25:07,371 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:25:07,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 19 [2023-12-21 11:25:07,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158538300] [2023-12-21 11:25:07,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:25:07,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-21 11:25:07,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:25:07,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-21 11:25:07,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2023-12-21 11:25:07,373 INFO L87 Difference]: Start difference. First operand 14776 states and 18788 transitions. Second operand has 19 states, 19 states have (on average 11.736842105263158) internal successors, (223), 18 states have internal predecessors, (223), 8 states have call successors, (51), 4 states have call predecessors, (51), 6 states have return successors, (50), 9 states have call predecessors, (50), 8 states have call successors, (50) [2023-12-21 11:25:12,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:25:12,028 INFO L93 Difference]: Finished difference Result 28182 states and 35906 transitions. [2023-12-21 11:25:12,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-12-21 11:25:12,030 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 11.736842105263158) internal successors, (223), 18 states have internal predecessors, (223), 8 states have call successors, (51), 4 states have call predecessors, (51), 6 states have return successors, (50), 9 states have call predecessors, (50), 8 states have call successors, (50) Word has length 179 [2023-12-21 11:25:12,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:25:12,094 INFO L225 Difference]: With dead ends: 28182 [2023-12-21 11:25:12,094 INFO L226 Difference]: Without dead ends: 15647 [2023-12-21 11:25:12,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 397 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1219 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=793, Invalid=3899, Unknown=0, NotChecked=0, Total=4692 [2023-12-21 11:25:12,113 INFO L413 NwaCegarLoop]: 556 mSDtfsCounter, 2028 mSDsluCounter, 4232 mSDsCounter, 0 mSdLazyCounter, 2240 mSolverCounterSat, 727 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2028 SdHoareTripleChecker+Valid, 4788 SdHoareTripleChecker+Invalid, 2967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 727 IncrementalHoareTripleChecker+Valid, 2240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-21 11:25:12,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2028 Valid, 4788 Invalid, 2967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [727 Valid, 2240 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-21 11:25:12,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15647 states. [2023-12-21 11:25:14,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15647 to 14791. [2023-12-21 11:25:14,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14791 states, 11009 states have (on average 1.270596784449087) internal successors, (13988), 11113 states have internal predecessors, (13988), 2385 states have call successors, (2385), 1396 states have call predecessors, (2385), 1396 states have return successors, (2385), 2281 states have call predecessors, (2385), 2385 states have call successors, (2385) [2023-12-21 11:25:14,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14791 states to 14791 states and 18758 transitions. [2023-12-21 11:25:14,390 INFO L78 Accepts]: Start accepts. Automaton has 14791 states and 18758 transitions. Word has length 179 [2023-12-21 11:25:14,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:25:14,390 INFO L495 AbstractCegarLoop]: Abstraction has 14791 states and 18758 transitions. [2023-12-21 11:25:14,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 11.736842105263158) internal successors, (223), 18 states have internal predecessors, (223), 8 states have call successors, (51), 4 states have call predecessors, (51), 6 states have return successors, (50), 9 states have call predecessors, (50), 8 states have call successors, (50) [2023-12-21 11:25:14,390 INFO L276 IsEmpty]: Start isEmpty. Operand 14791 states and 18758 transitions. [2023-12-21 11:25:14,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2023-12-21 11:25:14,396 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:25:14,396 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:25:14,401 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-21 11:25:14,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-12-21 11:25:14,602 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:25:14,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:25:14,602 INFO L85 PathProgramCache]: Analyzing trace with hash -941639552, now seen corresponding path program 1 times [2023-12-21 11:25:14,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:25:14,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069872326] [2023-12-21 11:25:14,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:25:14,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:25:14,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:14,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:25:14,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:14,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:25:14,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:14,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-21 11:25:14,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:14,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-21 11:25:14,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:14,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 11:25:14,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:14,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 11:25:14,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:14,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 11:25:14,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:14,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 11:25:14,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:14,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 11:25:14,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:14,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 11:25:14,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:14,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 11:25:14,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:14,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-21 11:25:14,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:14,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-21 11:25:14,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:14,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-21 11:25:14,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:14,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-12-21 11:25:14,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:14,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-12-21 11:25:14,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:14,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2023-12-21 11:25:14,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:14,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-12-21 11:25:14,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:14,782 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2023-12-21 11:25:14,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:25:14,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069872326] [2023-12-21 11:25:14,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069872326] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:25:14,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:25:14,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:25:14,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651825331] [2023-12-21 11:25:14,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:25:14,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:25:14,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:25:14,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:25:14,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:25:14,783 INFO L87 Difference]: Start difference. First operand 14791 states and 18758 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 6 states have internal predecessors, (105), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-21 11:25:17,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:25:17,711 INFO L93 Difference]: Finished difference Result 27428 states and 35532 transitions. [2023-12-21 11:25:17,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 11:25:17,712 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 6 states have internal predecessors, (105), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) Word has length 180 [2023-12-21 11:25:17,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:25:17,748 INFO L225 Difference]: With dead ends: 27428 [2023-12-21 11:25:17,748 INFO L226 Difference]: Without dead ends: 16343 [2023-12-21 11:25:17,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2023-12-21 11:25:17,763 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 483 mSDsluCounter, 1305 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 1707 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 11:25:17,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [486 Valid, 1707 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 11:25:17,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16343 states. [2023-12-21 11:25:20,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16343 to 14784. [2023-12-21 11:25:20,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14784 states, 11002 states have (on average 1.2694964551899655) internal successors, (13967), 11106 states have internal predecessors, (13967), 2385 states have call successors, (2385), 1396 states have call predecessors, (2385), 1396 states have return successors, (2385), 2281 states have call predecessors, (2385), 2385 states have call successors, (2385) [2023-12-21 11:25:20,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14784 states to 14784 states and 18737 transitions. [2023-12-21 11:25:20,124 INFO L78 Accepts]: Start accepts. Automaton has 14784 states and 18737 transitions. Word has length 180 [2023-12-21 11:25:20,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:25:20,125 INFO L495 AbstractCegarLoop]: Abstraction has 14784 states and 18737 transitions. [2023-12-21 11:25:20,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 6 states have internal predecessors, (105), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-21 11:25:20,125 INFO L276 IsEmpty]: Start isEmpty. Operand 14784 states and 18737 transitions. [2023-12-21 11:25:20,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-12-21 11:25:20,131 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:25:20,131 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:25:20,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-12-21 11:25:20,131 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:25:20,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:25:20,132 INFO L85 PathProgramCache]: Analyzing trace with hash -2130196962, now seen corresponding path program 1 times [2023-12-21 11:25:20,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:25:20,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669199182] [2023-12-21 11:25:20,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:25:20,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:25:20,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:20,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:25:20,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:20,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:25:20,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:20,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-21 11:25:20,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:20,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-21 11:25:20,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:20,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 11:25:20,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:20,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 11:25:20,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:20,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 11:25:20,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:20,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 11:25:20,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:20,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 11:25:20,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:20,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 11:25:20,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:20,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 11:25:20,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:20,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-21 11:25:20,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:20,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-12-21 11:25:20,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:20,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-21 11:25:20,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:20,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-12-21 11:25:20,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:20,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-12-21 11:25:20,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:20,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-12-21 11:25:20,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:20,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2023-12-21 11:25:20,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:20,431 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 21 proven. 7 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-12-21 11:25:20,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:25:20,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669199182] [2023-12-21 11:25:20,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669199182] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:25:20,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571101804] [2023-12-21 11:25:20,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:25:20,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:25:20,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:25:20,433 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:25:20,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-21 11:25:20,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:20,578 INFO L262 TraceCheckSpWp]: Trace formula consists of 728 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-21 11:25:20,581 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:25:20,945 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 84 proven. 9 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-12-21 11:25:20,945 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:25:21,346 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 23 proven. 5 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-12-21 11:25:21,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571101804] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:25:21,346 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:25:21,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 9] total 28 [2023-12-21 11:25:21,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940599245] [2023-12-21 11:25:21,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:25:21,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-21 11:25:21,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:25:21,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-21 11:25:21,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=615, Unknown=0, NotChecked=0, Total=756 [2023-12-21 11:25:21,349 INFO L87 Difference]: Start difference. First operand 14784 states and 18737 transitions. Second operand has 28 states, 28 states have (on average 9.607142857142858) internal successors, (269), 28 states have internal predecessors, (269), 11 states have call successors, (49), 5 states have call predecessors, (49), 5 states have return successors, (48), 11 states have call predecessors, (48), 11 states have call successors, (48) [2023-12-21 11:25:25,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:25:25,906 INFO L93 Difference]: Finished difference Result 35856 states and 45553 transitions. [2023-12-21 11:25:25,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-12-21 11:25:25,907 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 9.607142857142858) internal successors, (269), 28 states have internal predecessors, (269), 11 states have call successors, (49), 5 states have call predecessors, (49), 5 states have return successors, (48), 11 states have call predecessors, (48), 11 states have call successors, (48) Word has length 181 [2023-12-21 11:25:25,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:25:25,959 INFO L225 Difference]: With dead ends: 35856 [2023-12-21 11:25:25,960 INFO L226 Difference]: Without dead ends: 22300 [2023-12-21 11:25:25,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 384 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1262 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=677, Invalid=3483, Unknown=0, NotChecked=0, Total=4160 [2023-12-21 11:25:25,977 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 1273 mSDsluCounter, 2685 mSDsCounter, 0 mSdLazyCounter, 1948 mSolverCounterSat, 439 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1273 SdHoareTripleChecker+Valid, 3017 SdHoareTripleChecker+Invalid, 2387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 439 IncrementalHoareTripleChecker+Valid, 1948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 11:25:25,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1273 Valid, 3017 Invalid, 2387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [439 Valid, 1948 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 11:25:25,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22300 states. [2023-12-21 11:25:29,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22300 to 21777. [2023-12-21 11:25:29,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21777 states, 16121 states have (on average 1.269214068606166) internal successors, (20461), 16281 states have internal predecessors, (20461), 3588 states have call successors, (3588), 2067 states have call predecessors, (3588), 2067 states have return successors, (3588), 3428 states have call predecessors, (3588), 3588 states have call successors, (3588) [2023-12-21 11:25:29,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21777 states to 21777 states and 27637 transitions. [2023-12-21 11:25:29,368 INFO L78 Accepts]: Start accepts. Automaton has 21777 states and 27637 transitions. Word has length 181 [2023-12-21 11:25:29,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:25:29,368 INFO L495 AbstractCegarLoop]: Abstraction has 21777 states and 27637 transitions. [2023-12-21 11:25:29,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 9.607142857142858) internal successors, (269), 28 states have internal predecessors, (269), 11 states have call successors, (49), 5 states have call predecessors, (49), 5 states have return successors, (48), 11 states have call predecessors, (48), 11 states have call successors, (48) [2023-12-21 11:25:29,369 INFO L276 IsEmpty]: Start isEmpty. Operand 21777 states and 27637 transitions. [2023-12-21 11:25:29,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-12-21 11:25:29,375 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:25:29,375 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:25:29,381 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-21 11:25:29,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2023-12-21 11:25:29,581 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:25:29,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:25:29,581 INFO L85 PathProgramCache]: Analyzing trace with hash -776522475, now seen corresponding path program 1 times [2023-12-21 11:25:29,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:25:29,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644187705] [2023-12-21 11:25:29,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:25:29,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:25:29,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:29,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:25:29,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:29,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:25:29,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:29,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-21 11:25:29,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:29,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-21 11:25:29,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:29,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 11:25:29,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:29,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 11:25:29,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:29,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 11:25:29,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:29,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 11:25:29,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:29,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 11:25:29,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:29,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 11:25:29,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:29,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 11:25:29,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:29,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-21 11:25:29,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:29,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-21 11:25:29,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:29,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-21 11:25:29,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:29,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-12-21 11:25:29,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:29,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-12-21 11:25:29,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:29,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-12-21 11:25:29,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:29,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2023-12-21 11:25:29,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:29,656 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2023-12-21 11:25:29,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:25:29,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644187705] [2023-12-21 11:25:29,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644187705] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:25:29,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:25:29,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:25:29,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522406301] [2023-12-21 11:25:29,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:25:29,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:25:29,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:25:29,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:25:29,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:25:29,658 INFO L87 Difference]: Start difference. First operand 21777 states and 27637 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-21 11:25:33,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:25:33,229 INFO L93 Difference]: Finished difference Result 40585 states and 51991 transitions. [2023-12-21 11:25:33,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 11:25:33,230 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 182 [2023-12-21 11:25:33,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:25:33,275 INFO L225 Difference]: With dead ends: 40585 [2023-12-21 11:25:33,276 INFO L226 Difference]: Without dead ends: 23653 [2023-12-21 11:25:33,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 11:25:33,295 INFO L413 NwaCegarLoop]: 399 mSDtfsCounter, 204 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 1022 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:25:33,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 1022 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:25:33,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23653 states. [2023-12-21 11:25:36,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23653 to 22477. [2023-12-21 11:25:36,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22477 states, 16621 states have (on average 1.2675530954816197) internal successors, (21068), 16791 states have internal predecessors, (21068), 3712 states have call successors, (3712), 2143 states have call predecessors, (3712), 2143 states have return successors, (3712), 3542 states have call predecessors, (3712), 3712 states have call successors, (3712) [2023-12-21 11:25:36,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22477 states to 22477 states and 28492 transitions. [2023-12-21 11:25:36,924 INFO L78 Accepts]: Start accepts. Automaton has 22477 states and 28492 transitions. Word has length 182 [2023-12-21 11:25:36,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:25:36,924 INFO L495 AbstractCegarLoop]: Abstraction has 22477 states and 28492 transitions. [2023-12-21 11:25:36,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-21 11:25:36,924 INFO L276 IsEmpty]: Start isEmpty. Operand 22477 states and 28492 transitions. [2023-12-21 11:25:36,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-12-21 11:25:36,931 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:25:36,931 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:25:36,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-12-21 11:25:36,931 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:25:36,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:25:36,932 INFO L85 PathProgramCache]: Analyzing trace with hash 363153746, now seen corresponding path program 1 times [2023-12-21 11:25:36,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:25:36,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622128609] [2023-12-21 11:25:36,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:25:36,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:25:36,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:37,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:25:37,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:37,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:25:37,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:37,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-21 11:25:37,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:37,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-21 11:25:37,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:37,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 11:25:37,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:37,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 11:25:37,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:37,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 11:25:37,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:37,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 11:25:37,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:37,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 11:25:37,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:37,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 11:25:37,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:37,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 11:25:37,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:37,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-21 11:25:37,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:37,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-21 11:25:37,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:37,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-12-21 11:25:37,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:37,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-21 11:25:37,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:37,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-12-21 11:25:37,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:37,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2023-12-21 11:25:37,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:37,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2023-12-21 11:25:37,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:37,556 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 15 proven. 13 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-12-21 11:25:37,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:25:37,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622128609] [2023-12-21 11:25:37,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622128609] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:25:37,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637261572] [2023-12-21 11:25:37,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:25:37,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:25:37,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:25:37,567 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:25:37,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-21 11:25:37,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:37,730 INFO L262 TraceCheckSpWp]: Trace formula consists of 729 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-21 11:25:37,734 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:25:38,376 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 84 proven. 9 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-12-21 11:25:38,377 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:25:39,336 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 15 proven. 13 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-12-21 11:25:39,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637261572] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:25:39,336 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:25:39,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 12] total 25 [2023-12-21 11:25:39,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813345585] [2023-12-21 11:25:39,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:25:39,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-21 11:25:39,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:25:39,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-21 11:25:39,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=487, Unknown=0, NotChecked=0, Total=600 [2023-12-21 11:25:39,340 INFO L87 Difference]: Start difference. First operand 22477 states and 28492 transitions. Second operand has 25 states, 25 states have (on average 10.36) internal successors, (259), 25 states have internal predecessors, (259), 10 states have call successors, (48), 5 states have call predecessors, (48), 5 states have return successors, (47), 10 states have call predecessors, (47), 10 states have call successors, (47) [2023-12-21 11:25:43,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:25:43,976 INFO L93 Difference]: Finished difference Result 41419 states and 52842 transitions. [2023-12-21 11:25:43,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-21 11:25:43,977 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 10.36) internal successors, (259), 25 states have internal predecessors, (259), 10 states have call successors, (48), 5 states have call predecessors, (48), 5 states have return successors, (47), 10 states have call predecessors, (47), 10 states have call successors, (47) Word has length 183 [2023-12-21 11:25:43,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:25:44,023 INFO L225 Difference]: With dead ends: 41419 [2023-12-21 11:25:44,023 INFO L226 Difference]: Without dead ends: 22564 [2023-12-21 11:25:44,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 389 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 587 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=622, Invalid=2030, Unknown=0, NotChecked=0, Total=2652 [2023-12-21 11:25:44,044 INFO L413 NwaCegarLoop]: 362 mSDtfsCounter, 1837 mSDsluCounter, 1559 mSDsCounter, 0 mSdLazyCounter, 1173 mSolverCounterSat, 619 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1837 SdHoareTripleChecker+Valid, 1921 SdHoareTripleChecker+Invalid, 1792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 619 IncrementalHoareTripleChecker+Valid, 1173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 11:25:44,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1837 Valid, 1921 Invalid, 1792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [619 Valid, 1173 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 11:25:44,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22564 states. [2023-12-21 11:25:47,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22564 to 22472. [2023-12-21 11:25:47,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22472 states, 16630 states have (on average 1.2678292242934457) internal successors, (21084), 16792 states have internal predecessors, (21084), 3690 states have call successors, (3690), 2151 states have call predecessors, (3690), 2151 states have return successors, (3690), 3528 states have call predecessors, (3690), 3690 states have call successors, (3690) [2023-12-21 11:25:47,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22472 states to 22472 states and 28464 transitions. [2023-12-21 11:25:47,798 INFO L78 Accepts]: Start accepts. Automaton has 22472 states and 28464 transitions. Word has length 183 [2023-12-21 11:25:47,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:25:47,798 INFO L495 AbstractCegarLoop]: Abstraction has 22472 states and 28464 transitions. [2023-12-21 11:25:47,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 10.36) internal successors, (259), 25 states have internal predecessors, (259), 10 states have call successors, (48), 5 states have call predecessors, (48), 5 states have return successors, (47), 10 states have call predecessors, (47), 10 states have call successors, (47) [2023-12-21 11:25:47,799 INFO L276 IsEmpty]: Start isEmpty. Operand 22472 states and 28464 transitions. [2023-12-21 11:25:47,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2023-12-21 11:25:47,805 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:25:47,805 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:25:47,811 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-21 11:25:48,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2023-12-21 11:25:48,011 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:25:48,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:25:48,012 INFO L85 PathProgramCache]: Analyzing trace with hash 219528658, now seen corresponding path program 1 times [2023-12-21 11:25:48,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:25:48,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846947510] [2023-12-21 11:25:48,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:25:48,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:25:48,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:48,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:25:48,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:48,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:25:48,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:48,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-21 11:25:48,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:48,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-21 11:25:48,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:48,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-21 11:25:48,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:48,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 11:25:48,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:48,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 11:25:48,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:48,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 11:25:48,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:48,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-21 11:25:48,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:48,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 11:25:48,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:48,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-21 11:25:48,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:48,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-12-21 11:25:48,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:48,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-12-21 11:25:48,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:48,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-21 11:25:48,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:48,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-12-21 11:25:48,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:48,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-12-21 11:25:48,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:48,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-12-21 11:25:48,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:48,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-12-21 11:25:48,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:48,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2023-12-21 11:25:48,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:48,333 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2023-12-21 11:25:48,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:25:48,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846947510] [2023-12-21 11:25:48,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846947510] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:25:48,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161321293] [2023-12-21 11:25:48,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:25:48,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:25:48,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:25:48,349 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:25:48,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-21 11:25:48,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:48,535 INFO L262 TraceCheckSpWp]: Trace formula consists of 740 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-21 11:25:48,541 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:25:48,671 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 90 proven. 4 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-12-21 11:25:48,671 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:25:48,803 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2023-12-21 11:25:48,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161321293] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:25:48,803 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:25:48,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2023-12-21 11:25:48,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387671040] [2023-12-21 11:25:48,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:25:48,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-21 11:25:48,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:25:48,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-21 11:25:48,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-12-21 11:25:48,805 INFO L87 Difference]: Start difference. First operand 22472 states and 28464 transitions. Second operand has 14 states, 14 states have (on average 14.428571428571429) internal successors, (202), 13 states have internal predecessors, (202), 6 states have call successors, (45), 4 states have call predecessors, (45), 6 states have return successors, (45), 7 states have call predecessors, (45), 6 states have call successors, (45) [2023-12-21 11:25:55,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:25:55,569 INFO L93 Difference]: Finished difference Result 53607 states and 69401 transitions. [2023-12-21 11:25:55,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-21 11:25:55,570 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 14.428571428571429) internal successors, (202), 13 states have internal predecessors, (202), 6 states have call successors, (45), 4 states have call predecessors, (45), 6 states have return successors, (45), 7 states have call predecessors, (45), 6 states have call successors, (45) Word has length 185 [2023-12-21 11:25:55,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:25:55,639 INFO L225 Difference]: With dead ends: 53607 [2023-12-21 11:25:55,639 INFO L226 Difference]: Without dead ends: 31593 [2023-12-21 11:25:55,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 409 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=304, Invalid=1766, Unknown=0, NotChecked=0, Total=2070 [2023-12-21 11:25:55,663 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 969 mSDsluCounter, 4016 mSDsCounter, 0 mSdLazyCounter, 1725 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 973 SdHoareTripleChecker+Valid, 4514 SdHoareTripleChecker+Invalid, 1980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 1725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 11:25:55,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [973 Valid, 4514 Invalid, 1980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 1725 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 11:25:55,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31593 states. [2023-12-21 11:26:00,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31593 to 25078. [2023-12-21 11:26:00,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25078 states, 18621 states have (on average 1.2676010955372965) internal successors, (23604), 18800 states have internal predecessors, (23604), 4055 states have call successors, (4055), 2401 states have call predecessors, (4055), 2401 states have return successors, (4055), 3876 states have call predecessors, (4055), 4055 states have call successors, (4055) [2023-12-21 11:26:00,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25078 states to 25078 states and 31714 transitions. [2023-12-21 11:26:00,388 INFO L78 Accepts]: Start accepts. Automaton has 25078 states and 31714 transitions. Word has length 185 [2023-12-21 11:26:00,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:26:00,388 INFO L495 AbstractCegarLoop]: Abstraction has 25078 states and 31714 transitions. [2023-12-21 11:26:00,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 14.428571428571429) internal successors, (202), 13 states have internal predecessors, (202), 6 states have call successors, (45), 4 states have call predecessors, (45), 6 states have return successors, (45), 7 states have call predecessors, (45), 6 states have call successors, (45) [2023-12-21 11:26:00,389 INFO L276 IsEmpty]: Start isEmpty. Operand 25078 states and 31714 transitions. [2023-12-21 11:26:00,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2023-12-21 11:26:00,394 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:26:00,394 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:26:00,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-21 11:26:00,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2023-12-21 11:26:00,600 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:26:00,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:26:00,600 INFO L85 PathProgramCache]: Analyzing trace with hash 128061137, now seen corresponding path program 1 times [2023-12-21 11:26:00,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:26:00,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896260747] [2023-12-21 11:26:00,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:26:00,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:26:00,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:00,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:26:00,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:00,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:26:00,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:00,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-21 11:26:00,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:00,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-21 11:26:00,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:00,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 11:26:00,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:00,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 11:26:00,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:00,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 11:26:00,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:00,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 11:26:00,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:00,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 11:26:00,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:00,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 11:26:00,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:00,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 11:26:00,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:00,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-21 11:26:00,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:00,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-21 11:26:00,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:00,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-21 11:26:00,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:00,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-12-21 11:26:00,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:00,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-12-21 11:26:00,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:00,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2023-12-21 11:26:00,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:00,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2023-12-21 11:26:00,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:00,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-12-21 11:26:00,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:00,815 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 11 proven. 24 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2023-12-21 11:26:00,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:26:00,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896260747] [2023-12-21 11:26:00,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896260747] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:26:00,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134736779] [2023-12-21 11:26:00,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:26:00,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:26:00,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:26:00,833 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:26:00,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-21 11:26:01,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:01,002 INFO L262 TraceCheckSpWp]: Trace formula consists of 742 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 11:26:01,005 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:26:01,165 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 40 proven. 83 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-21 11:26:01,165 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:26:01,282 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 18 proven. 23 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2023-12-21 11:26:01,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134736779] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:26:01,282 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:26:01,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2023-12-21 11:26:01,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777998676] [2023-12-21 11:26:01,282 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:26:01,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-21 11:26:01,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:26:01,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-21 11:26:01,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2023-12-21 11:26:01,283 INFO L87 Difference]: Start difference. First operand 25078 states and 31714 transitions. Second operand has 17 states, 17 states have (on average 13.058823529411764) internal successors, (222), 15 states have internal predecessors, (222), 7 states have call successors, (55), 4 states have call predecessors, (55), 7 states have return successors, (54), 9 states have call predecessors, (54), 7 states have call successors, (54) [2023-12-21 11:26:10,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:26:10,174 INFO L93 Difference]: Finished difference Result 57806 states and 74122 transitions. [2023-12-21 11:26:10,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2023-12-21 11:26:10,175 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 13.058823529411764) internal successors, (222), 15 states have internal predecessors, (222), 7 states have call successors, (55), 4 states have call predecessors, (55), 7 states have return successors, (54), 9 states have call predecessors, (54), 7 states have call successors, (54) Word has length 188 [2023-12-21 11:26:10,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:26:10,245 INFO L225 Difference]: With dead ends: 57806 [2023-12-21 11:26:10,245 INFO L226 Difference]: Without dead ends: 36418 [2023-12-21 11:26:10,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 493 GetRequests, 418 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1674 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=963, Invalid=4737, Unknown=0, NotChecked=0, Total=5700 [2023-12-21 11:26:10,269 INFO L413 NwaCegarLoop]: 575 mSDtfsCounter, 2874 mSDsluCounter, 4882 mSDsCounter, 0 mSdLazyCounter, 1345 mSolverCounterSat, 1222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2874 SdHoareTripleChecker+Valid, 5457 SdHoareTripleChecker+Invalid, 2567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1222 IncrementalHoareTripleChecker+Valid, 1345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-21 11:26:10,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2874 Valid, 5457 Invalid, 2567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1222 Valid, 1345 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-21 11:26:10,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36418 states. [2023-12-21 11:26:15,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36418 to 25964. [2023-12-21 11:26:15,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25964 states, 19309 states have (on average 1.2562535605158216) internal successors, (24257), 19497 states have internal predecessors, (24257), 4102 states have call successors, (4102), 2552 states have call predecessors, (4102), 2552 states have return successors, (4102), 3914 states have call predecessors, (4102), 4102 states have call successors, (4102) [2023-12-21 11:26:15,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25964 states to 25964 states and 32461 transitions. [2023-12-21 11:26:15,436 INFO L78 Accepts]: Start accepts. Automaton has 25964 states and 32461 transitions. Word has length 188 [2023-12-21 11:26:15,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:26:15,436 INFO L495 AbstractCegarLoop]: Abstraction has 25964 states and 32461 transitions. [2023-12-21 11:26:15,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 13.058823529411764) internal successors, (222), 15 states have internal predecessors, (222), 7 states have call successors, (55), 4 states have call predecessors, (55), 7 states have return successors, (54), 9 states have call predecessors, (54), 7 states have call successors, (54) [2023-12-21 11:26:15,437 INFO L276 IsEmpty]: Start isEmpty. Operand 25964 states and 32461 transitions. [2023-12-21 11:26:15,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-12-21 11:26:15,443 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:26:15,443 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:26:15,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-21 11:26:15,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:26:15,651 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:26:15,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:26:15,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1577578277, now seen corresponding path program 1 times [2023-12-21 11:26:15,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:26:15,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831142721] [2023-12-21 11:26:15,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:26:15,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:26:15,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:16,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:26:16,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:16,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:26:16,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:16,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-21 11:26:16,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:16,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-21 11:26:16,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:16,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-21 11:26:16,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:16,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 11:26:16,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:16,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 11:26:16,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:16,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 11:26:16,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:16,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-21 11:26:16,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:16,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-21 11:26:16,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:16,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-21 11:26:16,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:16,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-21 11:26:16,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:16,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-21 11:26:16,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:16,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-12-21 11:26:16,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:16,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-12-21 11:26:16,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:16,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-21 11:26:16,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:16,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-12-21 11:26:16,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:16,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2023-12-21 11:26:16,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:16,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2023-12-21 11:26:16,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:16,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2023-12-21 11:26:16,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:16,036 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 20 proven. 13 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2023-12-21 11:26:16,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:26:16,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831142721] [2023-12-21 11:26:16,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831142721] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:26:16,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530157886] [2023-12-21 11:26:16,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:26:16,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:26:16,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:26:16,038 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:26:16,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-21 11:26:16,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:16,242 INFO L262 TraceCheckSpWp]: Trace formula consists of 757 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-21 11:26:16,246 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:26:16,568 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 101 proven. 21 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-12-21 11:26:16,568 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:26:16,769 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 20 proven. 13 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2023-12-21 11:26:16,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530157886] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:26:16,769 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:26:16,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 8] total 22 [2023-12-21 11:26:16,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61511516] [2023-12-21 11:26:16,770 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:26:16,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-21 11:26:16,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:26:16,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-21 11:26:16,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2023-12-21 11:26:16,780 INFO L87 Difference]: Start difference. First operand 25964 states and 32461 transitions. Second operand has 22 states, 22 states have (on average 12.545454545454545) internal successors, (276), 22 states have internal predecessors, (276), 10 states have call successors, (55), 5 states have call predecessors, (55), 6 states have return successors, (54), 10 states have call predecessors, (54), 10 states have call successors, (54) [2023-12-21 11:26:23,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:26:23,354 INFO L93 Difference]: Finished difference Result 52607 states and 66174 transitions. [2023-12-21 11:26:23,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-12-21 11:26:23,355 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 12.545454545454545) internal successors, (276), 22 states have internal predecessors, (276), 10 states have call successors, (55), 5 states have call predecessors, (55), 6 states have return successors, (54), 10 states have call predecessors, (54), 10 states have call successors, (54) Word has length 192 [2023-12-21 11:26:23,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:26:23,443 INFO L225 Difference]: With dead ends: 52607 [2023-12-21 11:26:23,443 INFO L226 Difference]: Without dead ends: 28748 [2023-12-21 11:26:23,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 420 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 723 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=541, Invalid=2009, Unknown=0, NotChecked=0, Total=2550 [2023-12-21 11:26:23,480 INFO L413 NwaCegarLoop]: 476 mSDtfsCounter, 1718 mSDsluCounter, 3303 mSDsCounter, 0 mSdLazyCounter, 2819 mSolverCounterSat, 350 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1718 SdHoareTripleChecker+Valid, 3779 SdHoareTripleChecker+Invalid, 3169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 350 IncrementalHoareTripleChecker+Valid, 2819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-21 11:26:23,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1718 Valid, 3779 Invalid, 3169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [350 Valid, 2819 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-21 11:26:23,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28748 states. [2023-12-21 11:26:28,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28748 to 26828. [2023-12-21 11:26:28,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26828 states, 19924 states have (on average 1.2616944388676972) internal successors, (25138), 20119 states have internal predecessors, (25138), 4278 states have call successors, (4278), 2625 states have call predecessors, (4278), 2625 states have return successors, (4278), 4083 states have call predecessors, (4278), 4278 states have call successors, (4278) [2023-12-21 11:26:28,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26828 states to 26828 states and 33694 transitions. [2023-12-21 11:26:28,632 INFO L78 Accepts]: Start accepts. Automaton has 26828 states and 33694 transitions. Word has length 192 [2023-12-21 11:26:28,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:26:28,633 INFO L495 AbstractCegarLoop]: Abstraction has 26828 states and 33694 transitions. [2023-12-21 11:26:28,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 12.545454545454545) internal successors, (276), 22 states have internal predecessors, (276), 10 states have call successors, (55), 5 states have call predecessors, (55), 6 states have return successors, (54), 10 states have call predecessors, (54), 10 states have call successors, (54) [2023-12-21 11:26:28,633 INFO L276 IsEmpty]: Start isEmpty. Operand 26828 states and 33694 transitions. [2023-12-21 11:26:28,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2023-12-21 11:26:28,638 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:26:28,638 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:26:28,645 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-21 11:26:28,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:26:28,841 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:26:28,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:26:28,841 INFO L85 PathProgramCache]: Analyzing trace with hash -85192440, now seen corresponding path program 1 times [2023-12-21 11:26:28,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:26:28,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806909782] [2023-12-21 11:26:28,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:26:28,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:26:28,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:29,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:26:29,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:29,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:26:29,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:29,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-21 11:26:29,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:29,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-21 11:26:29,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:29,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-21 11:26:29,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:29,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 11:26:29,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:29,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 11:26:29,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:29,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 11:26:29,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:29,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-21 11:26:29,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:29,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-21 11:26:29,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:29,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-21 11:26:29,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:29,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-21 11:26:29,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:29,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-21 11:26:29,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:29,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-12-21 11:26:29,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:29,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-12-21 11:26:29,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:29,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-12-21 11:26:29,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:29,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-12-21 11:26:29,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:29,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-12-21 11:26:29,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:29,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2023-12-21 11:26:29,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:29,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2023-12-21 11:26:29,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:29,214 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 26 proven. 6 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2023-12-21 11:26:29,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:26:29,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806909782] [2023-12-21 11:26:29,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806909782] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:26:29,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413384477] [2023-12-21 11:26:29,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:26:29,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:26:29,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:26:29,215 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:26:29,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-21 11:26:29,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:29,378 INFO L262 TraceCheckSpWp]: Trace formula consists of 779 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-21 11:26:29,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:26:29,548 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 120 proven. 31 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-21 11:26:29,548 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:26:29,708 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 38 proven. 8 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-12-21 11:26:29,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413384477] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:26:29,709 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:26:29,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10] total 20 [2023-12-21 11:26:29,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773028693] [2023-12-21 11:26:29,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:26:29,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-21 11:26:29,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:26:29,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-21 11:26:29,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2023-12-21 11:26:29,710 INFO L87 Difference]: Start difference. First operand 26828 states and 33694 transitions. Second operand has 20 states, 20 states have (on average 11.5) internal successors, (230), 17 states have internal predecessors, (230), 7 states have call successors, (52), 4 states have call predecessors, (52), 8 states have return successors, (52), 10 states have call predecessors, (52), 7 states have call successors, (52) [2023-12-21 11:26:43,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:26:43,911 INFO L93 Difference]: Finished difference Result 82237 states and 105905 transitions. [2023-12-21 11:26:43,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-12-21 11:26:43,911 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 11.5) internal successors, (230), 17 states have internal predecessors, (230), 7 states have call successors, (52), 4 states have call predecessors, (52), 8 states have return successors, (52), 10 states have call predecessors, (52), 7 states have call successors, (52) Word has length 196 [2023-12-21 11:26:43,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:26:44,075 INFO L225 Difference]: With dead ends: 82237 [2023-12-21 11:26:44,075 INFO L226 Difference]: Without dead ends: 56931 [2023-12-21 11:26:44,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 523 GetRequests, 445 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1719 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=675, Invalid=5487, Unknown=0, NotChecked=0, Total=6162 [2023-12-21 11:26:44,112 INFO L413 NwaCegarLoop]: 724 mSDtfsCounter, 1714 mSDsluCounter, 7882 mSDsCounter, 0 mSdLazyCounter, 3283 mSolverCounterSat, 519 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1722 SdHoareTripleChecker+Valid, 8606 SdHoareTripleChecker+Invalid, 3802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 519 IncrementalHoareTripleChecker+Valid, 3283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-21 11:26:44,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1722 Valid, 8606 Invalid, 3802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [519 Valid, 3283 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-21 11:26:44,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56931 states. [2023-12-21 11:26:53,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56931 to 43392. [2023-12-21 11:26:53,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43392 states, 32094 states have (on average 1.2716395587960367) internal successors, (40812), 32429 states have internal predecessors, (40812), 7046 states have call successors, (7046), 4251 states have call predecessors, (7046), 4251 states have return successors, (7046), 6711 states have call predecessors, (7046), 7046 states have call successors, (7046) [2023-12-21 11:26:53,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43392 states to 43392 states and 54904 transitions. [2023-12-21 11:26:53,281 INFO L78 Accepts]: Start accepts. Automaton has 43392 states and 54904 transitions. Word has length 196 [2023-12-21 11:26:53,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:26:53,282 INFO L495 AbstractCegarLoop]: Abstraction has 43392 states and 54904 transitions. [2023-12-21 11:26:53,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 11.5) internal successors, (230), 17 states have internal predecessors, (230), 7 states have call successors, (52), 4 states have call predecessors, (52), 8 states have return successors, (52), 10 states have call predecessors, (52), 7 states have call successors, (52) [2023-12-21 11:26:53,282 INFO L276 IsEmpty]: Start isEmpty. Operand 43392 states and 54904 transitions. [2023-12-21 11:26:53,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2023-12-21 11:26:53,287 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:26:53,288 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:26:53,294 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-21 11:26:53,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2023-12-21 11:26:53,493 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:26:53,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:26:53,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1084778930, now seen corresponding path program 1 times [2023-12-21 11:26:53,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:26:53,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995532688] [2023-12-21 11:26:53,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:26:53,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:26:53,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:53,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:26:53,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:53,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:26:53,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:53,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-21 11:26:53,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:53,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-21 11:26:53,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:53,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-21 11:26:53,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:53,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 11:26:53,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:53,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 11:26:53,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:53,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 11:26:53,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:53,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-21 11:26:53,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:53,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-21 11:26:53,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:53,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-21 11:26:53,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:53,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-21 11:26:53,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:53,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-21 11:26:53,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:53,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-12-21 11:26:53,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:53,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-12-21 11:26:53,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:53,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-12-21 11:26:53,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:53,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-12-21 11:26:53,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:53,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-12-21 11:26:53,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:53,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2023-12-21 11:26:53,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:53,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2023-12-21 11:26:53,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:53,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2023-12-21 11:26:53,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:53,832 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 26 proven. 3 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2023-12-21 11:26:53,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:26:53,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995532688] [2023-12-21 11:26:53,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995532688] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:26:53,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140990248] [2023-12-21 11:26:53,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:26:53,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:26:53,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:26:53,834 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:26:53,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-21 11:26:54,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:54,004 INFO L262 TraceCheckSpWp]: Trace formula consists of 774 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-21 11:26:54,012 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:26:54,343 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 127 proven. 7 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-12-21 11:26:54,343 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:26:54,596 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 26 proven. 3 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2023-12-21 11:26:54,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1140990248] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:26:54,596 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:26:54,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 8] total 17 [2023-12-21 11:26:54,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96666100] [2023-12-21 11:26:54,596 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:26:54,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-21 11:26:54,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:26:54,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-21 11:26:54,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2023-12-21 11:26:54,597 INFO L87 Difference]: Start difference. First operand 43392 states and 54904 transitions. Second operand has 17 states, 17 states have (on average 12.588235294117647) internal successors, (214), 17 states have internal predecessors, (214), 7 states have call successors, (44), 5 states have call predecessors, (44), 6 states have return successors, (43), 7 states have call predecessors, (43), 7 states have call successors, (43) [2023-12-21 11:27:06,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:27:06,184 INFO L93 Difference]: Finished difference Result 95078 states and 120630 transitions. [2023-12-21 11:27:06,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-21 11:27:06,185 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 12.588235294117647) internal successors, (214), 17 states have internal predecessors, (214), 7 states have call successors, (44), 5 states have call predecessors, (44), 6 states have return successors, (43), 7 states have call predecessors, (43), 7 states have call successors, (43) Word has length 198 [2023-12-21 11:27:06,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:27:06,334 INFO L225 Difference]: With dead ends: 95078 [2023-12-21 11:27:06,334 INFO L226 Difference]: Without dead ends: 52575 [2023-12-21 11:27:06,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 434 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=268, Invalid=922, Unknown=0, NotChecked=0, Total=1190 [2023-12-21 11:27:06,383 INFO L413 NwaCegarLoop]: 418 mSDtfsCounter, 1258 mSDsluCounter, 1946 mSDsCounter, 0 mSdLazyCounter, 1426 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1258 SdHoareTripleChecker+Valid, 2364 SdHoareTripleChecker+Invalid, 1668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 1426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 11:27:06,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1258 Valid, 2364 Invalid, 1668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [242 Valid, 1426 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 11:27:06,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52575 states. [2023-12-21 11:27:17,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52575 to 51885. [2023-12-21 11:27:17,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51885 states, 38279 states have (on average 1.2727343974502991) internal successors, (48719), 38690 states have internal predecessors, (48719), 8503 states have call successors, (8503), 5102 states have call predecessors, (8503), 5102 states have return successors, (8503), 8092 states have call predecessors, (8503), 8503 states have call successors, (8503) [2023-12-21 11:27:17,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51885 states to 51885 states and 65725 transitions. [2023-12-21 11:27:17,451 INFO L78 Accepts]: Start accepts. Automaton has 51885 states and 65725 transitions. Word has length 198 [2023-12-21 11:27:17,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:27:17,451 INFO L495 AbstractCegarLoop]: Abstraction has 51885 states and 65725 transitions. [2023-12-21 11:27:17,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 12.588235294117647) internal successors, (214), 17 states have internal predecessors, (214), 7 states have call successors, (44), 5 states have call predecessors, (44), 6 states have return successors, (43), 7 states have call predecessors, (43), 7 states have call successors, (43) [2023-12-21 11:27:17,452 INFO L276 IsEmpty]: Start isEmpty. Operand 51885 states and 65725 transitions. [2023-12-21 11:27:17,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2023-12-21 11:27:17,457 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:27:17,458 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:27:17,486 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-21 11:27:17,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2023-12-21 11:27:17,664 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:27:17,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:27:17,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1843967482, now seen corresponding path program 1 times [2023-12-21 11:27:17,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:27:17,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821565995] [2023-12-21 11:27:17,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:27:17,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:27:17,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:17,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:27:17,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:17,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:27:17,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:17,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-21 11:27:17,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:17,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-21 11:27:17,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:17,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-21 11:27:17,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:17,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 11:27:17,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:17,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 11:27:17,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:17,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 11:27:17,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:17,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-21 11:27:17,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:17,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-21 11:27:17,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:17,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-21 11:27:17,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:17,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-21 11:27:17,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:17,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-21 11:27:17,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:17,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-12-21 11:27:17,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:17,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-21 11:27:17,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:17,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-21 11:27:17,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:17,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-12-21 11:27:17,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:17,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2023-12-21 11:27:17,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:17,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2023-12-21 11:27:17,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:17,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2023-12-21 11:27:17,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:17,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2023-12-21 11:27:17,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:17,847 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2023-12-21 11:27:17,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:27:17,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821565995] [2023-12-21 11:27:17,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821565995] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:27:17,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:27:17,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 11:27:17,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246943234] [2023-12-21 11:27:17,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:27:17,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 11:27:17,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:27:17,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 11:27:17,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-21 11:27:17,849 INFO L87 Difference]: Start difference. First operand 51885 states and 65725 transitions. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 4 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) [2023-12-21 11:27:29,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:27:29,763 INFO L93 Difference]: Finished difference Result 103812 states and 133035 transitions. [2023-12-21 11:27:29,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 11:27:29,763 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 4 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) Word has length 199 [2023-12-21 11:27:29,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:27:29,926 INFO L225 Difference]: With dead ends: 103812 [2023-12-21 11:27:29,927 INFO L226 Difference]: Without dead ends: 55664 [2023-12-21 11:27:29,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2023-12-21 11:27:29,998 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 426 mSDsluCounter, 1478 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 1883 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 11:27:29,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 1883 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 11:27:30,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55664 states. [2023-12-21 11:27:41,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55664 to 51547. [2023-12-21 11:27:41,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51547 states, 38033 states have (on average 1.2720269239870639) internal successors, (48379), 38438 states have internal predecessors, (48379), 8449 states have call successors, (8449), 5064 states have call predecessors, (8449), 5064 states have return successors, (8449), 8044 states have call predecessors, (8449), 8449 states have call successors, (8449) [2023-12-21 11:27:41,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51547 states to 51547 states and 65277 transitions. [2023-12-21 11:27:41,349 INFO L78 Accepts]: Start accepts. Automaton has 51547 states and 65277 transitions. Word has length 199 [2023-12-21 11:27:41,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:27:41,350 INFO L495 AbstractCegarLoop]: Abstraction has 51547 states and 65277 transitions. [2023-12-21 11:27:41,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 4 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) [2023-12-21 11:27:41,350 INFO L276 IsEmpty]: Start isEmpty. Operand 51547 states and 65277 transitions. [2023-12-21 11:27:41,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2023-12-21 11:27:41,380 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:27:41,380 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:27:41,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2023-12-21 11:27:41,381 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:27:41,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:27:41,381 INFO L85 PathProgramCache]: Analyzing trace with hash 955276062, now seen corresponding path program 1 times [2023-12-21 11:27:41,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:27:41,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287285545] [2023-12-21 11:27:41,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:27:41,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:27:41,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:41,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:27:41,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:41,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:27:41,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:41,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-21 11:27:41,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:41,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-21 11:27:41,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:41,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-21 11:27:41,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:41,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 11:27:41,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:41,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 11:27:41,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:41,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 11:27:41,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:41,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-21 11:27:41,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:41,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-21 11:27:41,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:41,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-21 11:27:41,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:41,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-21 11:27:41,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:41,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-21 11:27:41,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:41,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-21 11:27:41,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:41,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-12-21 11:27:41,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:41,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-21 11:27:41,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:41,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-12-21 11:27:41,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:41,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2023-12-21 11:27:41,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:41,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2023-12-21 11:27:41,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:41,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2023-12-21 11:27:41,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:41,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2023-12-21 11:27:41,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:41,792 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 4 proven. 25 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2023-12-21 11:27:41,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:27:41,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287285545] [2023-12-21 11:27:41,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287285545] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:27:41,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596529843] [2023-12-21 11:27:41,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:27:41,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:27:41,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:27:41,793 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:27:41,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-21 11:27:41,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:41,954 INFO L262 TraceCheckSpWp]: Trace formula consists of 775 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-21 11:27:41,957 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:27:42,169 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 4 proven. 130 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-12-21 11:27:42,169 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:27:42,406 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 4 proven. 25 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2023-12-21 11:27:42,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596529843] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:27:42,406 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:27:42,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 9] total 17 [2023-12-21 11:27:42,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349906162] [2023-12-21 11:27:42,406 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:27:42,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-21 11:27:42,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:27:42,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-21 11:27:42,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2023-12-21 11:27:42,408 INFO L87 Difference]: Start difference. First operand 51547 states and 65277 transitions. Second operand has 17 states, 17 states have (on average 11.529411764705882) internal successors, (196), 17 states have internal predecessors, (196), 7 states have call successors, (44), 6 states have call predecessors, (44), 6 states have return successors, (43), 6 states have call predecessors, (43), 6 states have call successors, (43) [2023-12-21 11:27:53,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:27:53,782 INFO L93 Difference]: Finished difference Result 99561 states and 126611 transitions. [2023-12-21 11:27:53,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-21 11:27:53,783 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 11.529411764705882) internal successors, (196), 17 states have internal predecessors, (196), 7 states have call successors, (44), 6 states have call predecessors, (44), 6 states have return successors, (43), 6 states have call predecessors, (43), 6 states have call successors, (43) Word has length 200 [2023-12-21 11:27:53,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:27:53,906 INFO L225 Difference]: With dead ends: 99561 [2023-12-21 11:27:53,907 INFO L226 Difference]: Without dead ends: 51698 [2023-12-21 11:27:53,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 440 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=672, Unknown=0, NotChecked=0, Total=870 [2023-12-21 11:27:53,965 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 1367 mSDsluCounter, 2195 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 406 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1367 SdHoareTripleChecker+Valid, 2493 SdHoareTripleChecker+Invalid, 1541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 406 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 11:27:53,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1367 Valid, 2493 Invalid, 1541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [406 Valid, 1135 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 11:27:53,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51698 states. [2023-12-21 11:28:05,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51698 to 50689. [2023-12-21 11:28:05,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50689 states, 37397 states have (on average 1.2704495012968955) internal successors, (47511), 37792 states have internal predecessors, (47511), 8307 states have call successors, (8307), 4984 states have call predecessors, (8307), 4984 states have return successors, (8307), 7912 states have call predecessors, (8307), 8307 states have call successors, (8307) [2023-12-21 11:28:05,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50689 states to 50689 states and 64125 transitions. [2023-12-21 11:28:05,418 INFO L78 Accepts]: Start accepts. Automaton has 50689 states and 64125 transitions. Word has length 200 [2023-12-21 11:28:05,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:28:05,419 INFO L495 AbstractCegarLoop]: Abstraction has 50689 states and 64125 transitions. [2023-12-21 11:28:05,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 11.529411764705882) internal successors, (196), 17 states have internal predecessors, (196), 7 states have call successors, (44), 6 states have call predecessors, (44), 6 states have return successors, (43), 6 states have call predecessors, (43), 6 states have call successors, (43) [2023-12-21 11:28:05,419 INFO L276 IsEmpty]: Start isEmpty. Operand 50689 states and 64125 transitions. [2023-12-21 11:28:05,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2023-12-21 11:28:05,441 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:28:05,441 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:28:05,446 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-12-21 11:28:05,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2023-12-21 11:28:05,646 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:28:05,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:28:05,647 INFO L85 PathProgramCache]: Analyzing trace with hash -908250239, now seen corresponding path program 1 times [2023-12-21 11:28:05,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:28:05,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980220424] [2023-12-21 11:28:05,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:28:05,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:28:05,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:06,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:28:06,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:06,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-21 11:28:06,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:06,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-21 11:28:06,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:06,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-21 11:28:06,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:06,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 11:28:06,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:06,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-21 11:28:06,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:06,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 11:28:06,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:06,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 11:28:06,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:06,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 11:28:06,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:06,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 11:28:06,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:06,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 11:28:06,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:06,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 11:28:06,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:06,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-21 11:28:06,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:06,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-21 11:28:06,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:06,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2023-12-21 11:28:06,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:06,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-12-21 11:28:06,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:06,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2023-12-21 11:28:06,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:06,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2023-12-21 11:28:06,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:06,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2023-12-21 11:28:06,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:06,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2023-12-21 11:28:06,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:06,371 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 35 proven. 3 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2023-12-21 11:28:06,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:28:06,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980220424] [2023-12-21 11:28:06,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980220424] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:28:06,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72295124] [2023-12-21 11:28:06,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:28:06,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:28:06,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:28:06,389 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:28:06,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-21 11:28:06,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:06,593 INFO L262 TraceCheckSpWp]: Trace formula consists of 804 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-21 11:28:06,597 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:28:06,931 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 4 proven. 124 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-12-21 11:28:06,931 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:28:07,293 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 6 proven. 34 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-12-21 11:28:07,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72295124] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:28:07,294 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:28:07,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 14] total 30 [2023-12-21 11:28:07,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815008566] [2023-12-21 11:28:07,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:28:07,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-21 11:28:07,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:28:07,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-21 11:28:07,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=783, Unknown=0, NotChecked=0, Total=870 [2023-12-21 11:28:07,296 INFO L87 Difference]: Start difference. First operand 50689 states and 64125 transitions. Second operand has 30 states, 30 states have (on average 9.966666666666667) internal successors, (299), 29 states have internal predecessors, (299), 10 states have call successors, (61), 6 states have call predecessors, (61), 7 states have return successors, (60), 11 states have call predecessors, (60), 10 states have call successors, (60) [2023-12-21 11:28:22,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:28:22,816 INFO L93 Difference]: Finished difference Result 104065 states and 133579 transitions. [2023-12-21 11:28:22,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2023-12-21 11:28:22,817 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 9.966666666666667) internal successors, (299), 29 states have internal predecessors, (299), 10 states have call successors, (61), 6 states have call predecessors, (61), 7 states have return successors, (60), 11 states have call predecessors, (60), 10 states have call successors, (60) Word has length 203 [2023-12-21 11:28:22,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:28:23,000 INFO L225 Difference]: With dead ends: 104065 [2023-12-21 11:28:23,001 INFO L226 Difference]: Without dead ends: 56480 [2023-12-21 11:28:23,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 521 GetRequests, 433 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1992 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1143, Invalid=6867, Unknown=0, NotChecked=0, Total=8010 [2023-12-21 11:28:23,073 INFO L413 NwaCegarLoop]: 527 mSDtfsCounter, 2815 mSDsluCounter, 6111 mSDsCounter, 0 mSdLazyCounter, 3089 mSolverCounterSat, 1010 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2815 SdHoareTripleChecker+Valid, 6638 SdHoareTripleChecker+Invalid, 4099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1010 IncrementalHoareTripleChecker+Valid, 3089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-21 11:28:23,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2815 Valid, 6638 Invalid, 4099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1010 Valid, 3089 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-21 11:28:23,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56480 states. [2023-12-21 11:28:34,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56480 to 49490. [2023-12-21 11:28:34,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49490 states, 36533 states have (on average 1.2690991706128705) internal successors, (46364), 36913 states have internal predecessors, (46364), 8097 states have call successors, (8097), 4859 states have call predecessors, (8097), 4859 states have return successors, (8097), 7717 states have call predecessors, (8097), 8097 states have call successors, (8097) [2023-12-21 11:28:34,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49490 states to 49490 states and 62558 transitions. [2023-12-21 11:28:34,517 INFO L78 Accepts]: Start accepts. Automaton has 49490 states and 62558 transitions. Word has length 203 [2023-12-21 11:28:34,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:28:34,518 INFO L495 AbstractCegarLoop]: Abstraction has 49490 states and 62558 transitions. [2023-12-21 11:28:34,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 9.966666666666667) internal successors, (299), 29 states have internal predecessors, (299), 10 states have call successors, (61), 6 states have call predecessors, (61), 7 states have return successors, (60), 11 states have call predecessors, (60), 10 states have call successors, (60) [2023-12-21 11:28:34,518 INFO L276 IsEmpty]: Start isEmpty. Operand 49490 states and 62558 transitions. [2023-12-21 11:28:34,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2023-12-21 11:28:34,526 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:28:34,526 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:28:34,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-21 11:28:34,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:28:34,731 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:28:34,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:28:34,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1927670792, now seen corresponding path program 1 times [2023-12-21 11:28:34,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:28:34,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927992050] [2023-12-21 11:28:34,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:28:34,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:28:34,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:34,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:28:34,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:34,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:28:34,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:34,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-21 11:28:34,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:34,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-21 11:28:34,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:34,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-21 11:28:34,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:34,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 11:28:34,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:34,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 11:28:34,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:34,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 11:28:34,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:34,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-21 11:28:34,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:34,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-21 11:28:34,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:34,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-21 11:28:34,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:34,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-21 11:28:34,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:34,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-21 11:28:34,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:34,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-12-21 11:28:34,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:34,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-12-21 11:28:34,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:34,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-12-21 11:28:34,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:34,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-12-21 11:28:34,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:34,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-12-21 11:28:34,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:34,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2023-12-21 11:28:34,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:34,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2023-12-21 11:28:34,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:34,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2023-12-21 11:28:34,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:34,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2023-12-21 11:28:34,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:34,950 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 26 proven. 3 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2023-12-21 11:28:34,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:28:34,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927992050] [2023-12-21 11:28:34,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927992050] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:28:34,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425927333] [2023-12-21 11:28:34,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:28:34,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:28:34,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:28:34,952 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:28:34,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-21 11:28:35,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:35,123 INFO L262 TraceCheckSpWp]: Trace formula consists of 792 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-21 11:28:35,126 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:28:35,406 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 127 proven. 7 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-12-21 11:28:35,406 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:28:35,646 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 26 proven. 3 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2023-12-21 11:28:35,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425927333] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:28:35,646 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:28:35,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 13 [2023-12-21 11:28:35,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167227924] [2023-12-21 11:28:35,646 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:28:35,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 11:28:35,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:28:35,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 11:28:35,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2023-12-21 11:28:35,648 INFO L87 Difference]: Start difference. First operand 49490 states and 62558 transitions. Second operand has 13 states, 13 states have (on average 17.53846153846154) internal successors, (228), 13 states have internal predecessors, (228), 7 states have call successors, (46), 5 states have call predecessors, (46), 5 states have return successors, (45), 7 states have call predecessors, (45), 7 states have call successors, (45) [2023-12-21 11:28:44,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:28:44,794 INFO L93 Difference]: Finished difference Result 86287 states and 109498 transitions. [2023-12-21 11:28:44,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 11:28:44,794 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 17.53846153846154) internal successors, (228), 13 states have internal predecessors, (228), 7 states have call successors, (46), 5 states have call predecessors, (46), 5 states have return successors, (45), 7 states have call predecessors, (45), 7 states have call successors, (45) Word has length 206 [2023-12-21 11:28:44,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:28:44,900 INFO L225 Difference]: With dead ends: 86287 [2023-12-21 11:28:44,900 INFO L226 Difference]: Without dead ends: 40031 [2023-12-21 11:28:44,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 451 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=199, Unknown=0, NotChecked=0, Total=306 [2023-12-21 11:28:44,950 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 658 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 658 SdHoareTripleChecker+Valid, 981 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 11:28:44,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [658 Valid, 981 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 11:28:44,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40031 states. [2023-12-21 11:28:54,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40031 to 39920. [2023-12-21 11:28:54,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39920 states, 29579 states have (on average 1.267723722911525) internal successors, (37498), 29882 states have internal predecessors, (37498), 6433 states have call successors, (6433), 3907 states have call predecessors, (6433), 3907 states have return successors, (6433), 6130 states have call predecessors, (6433), 6433 states have call successors, (6433) [2023-12-21 11:28:54,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39920 states to 39920 states and 50364 transitions. [2023-12-21 11:28:54,207 INFO L78 Accepts]: Start accepts. Automaton has 39920 states and 50364 transitions. Word has length 206 [2023-12-21 11:28:54,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:28:54,207 INFO L495 AbstractCegarLoop]: Abstraction has 39920 states and 50364 transitions. [2023-12-21 11:28:54,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 17.53846153846154) internal successors, (228), 13 states have internal predecessors, (228), 7 states have call successors, (46), 5 states have call predecessors, (46), 5 states have return successors, (45), 7 states have call predecessors, (45), 7 states have call successors, (45) [2023-12-21 11:28:54,208 INFO L276 IsEmpty]: Start isEmpty. Operand 39920 states and 50364 transitions. [2023-12-21 11:28:54,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-12-21 11:28:54,214 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:28:54,214 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:28:54,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-21 11:28:54,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2023-12-21 11:28:54,421 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:28:54,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:28:54,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1453023310, now seen corresponding path program 1 times [2023-12-21 11:28:54,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:28:54,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289650880] [2023-12-21 11:28:54,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:28:54,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:28:54,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:54,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:28:54,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:54,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-21 11:28:54,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:54,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-21 11:28:54,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:54,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-21 11:28:54,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:54,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 11:28:54,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:54,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-21 11:28:54,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:54,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 11:28:54,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:54,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 11:28:54,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:54,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 11:28:54,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:54,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 11:28:54,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:54,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 11:28:54,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:54,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 11:28:54,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:54,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-21 11:28:54,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:54,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-21 11:28:54,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:54,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-21 11:28:54,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:54,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-12-21 11:28:54,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:54,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-12-21 11:28:54,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:54,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2023-12-21 11:28:54,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:54,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2023-12-21 11:28:54,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:54,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2023-12-21 11:28:54,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:54,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2023-12-21 11:28:54,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:54,710 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 19 proven. 18 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-12-21 11:28:54,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:28:54,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289650880] [2023-12-21 11:28:54,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289650880] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:28:54,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403555619] [2023-12-21 11:28:54,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:28:54,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:28:54,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:28:54,711 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:28:54,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-21 11:28:54,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:54,885 INFO L262 TraceCheckSpWp]: Trace formula consists of 817 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-21 11:28:54,889 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:28:55,703 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 78 proven. 47 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-12-21 11:28:55,703 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:28:56,016 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 19 proven. 18 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-12-21 11:28:56,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403555619] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:28:56,017 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:28:56,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 11] total 34 [2023-12-21 11:28:56,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249564989] [2023-12-21 11:28:56,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:28:56,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-21 11:28:56,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:28:56,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-21 11:28:56,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1011, Unknown=0, NotChecked=0, Total=1122 [2023-12-21 11:28:56,019 INFO L87 Difference]: Start difference. First operand 39920 states and 50364 transitions. Second operand has 34 states, 34 states have (on average 9.676470588235293) internal successors, (329), 31 states have internal predecessors, (329), 13 states have call successors, (60), 6 states have call predecessors, (60), 9 states have return successors, (59), 16 states have call predecessors, (59), 13 states have call successors, (59) [2023-12-21 11:29:12,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:29:12,538 INFO L93 Difference]: Finished difference Result 89665 states and 115282 transitions. [2023-12-21 11:29:12,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-21 11:29:12,538 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 9.676470588235293) internal successors, (329), 31 states have internal predecessors, (329), 13 states have call successors, (60), 6 states have call predecessors, (60), 9 states have return successors, (59), 16 states have call predecessors, (59), 13 states have call successors, (59) Word has length 207 [2023-12-21 11:29:12,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:29:12,723 INFO L225 Difference]: With dead ends: 89665 [2023-12-21 11:29:12,723 INFO L226 Difference]: Without dead ends: 52540 [2023-12-21 11:29:12,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 501 GetRequests, 438 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 727 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=654, Invalid=3506, Unknown=0, NotChecked=0, Total=4160 [2023-12-21 11:29:12,780 INFO L413 NwaCegarLoop]: 386 mSDtfsCounter, 1733 mSDsluCounter, 4260 mSDsCounter, 0 mSdLazyCounter, 2721 mSolverCounterSat, 631 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1733 SdHoareTripleChecker+Valid, 4646 SdHoareTripleChecker+Invalid, 3352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 631 IncrementalHoareTripleChecker+Valid, 2721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-21 11:29:12,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1733 Valid, 4646 Invalid, 3352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [631 Valid, 2721 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-21 11:29:12,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52540 states. [2023-12-21 11:29:23,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52540 to 41800. [2023-12-21 11:29:23,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41800 states, 31005 states have (on average 1.2699242057732625) internal successors, (39374), 31316 states have internal predecessors, (39374), 6706 states have call successors, (6706), 4088 states have call predecessors, (6706), 4088 states have return successors, (6706), 6395 states have call predecessors, (6706), 6706 states have call successors, (6706) [2023-12-21 11:29:23,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41800 states to 41800 states and 52786 transitions. [2023-12-21 11:29:23,550 INFO L78 Accepts]: Start accepts. Automaton has 41800 states and 52786 transitions. Word has length 207 [2023-12-21 11:29:23,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:29:23,551 INFO L495 AbstractCegarLoop]: Abstraction has 41800 states and 52786 transitions. [2023-12-21 11:29:23,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 9.676470588235293) internal successors, (329), 31 states have internal predecessors, (329), 13 states have call successors, (60), 6 states have call predecessors, (60), 9 states have return successors, (59), 16 states have call predecessors, (59), 13 states have call successors, (59) [2023-12-21 11:29:23,551 INFO L276 IsEmpty]: Start isEmpty. Operand 41800 states and 52786 transitions. [2023-12-21 11:29:23,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2023-12-21 11:29:23,558 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:29:23,558 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:29:23,568 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-12-21 11:29:23,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:29:23,766 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:29:23,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:29:23,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1722666915, now seen corresponding path program 1 times [2023-12-21 11:29:23,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:29:23,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143847525] [2023-12-21 11:29:23,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:29:23,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:29:23,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:24,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:29:24,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:24,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-21 11:29:24,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:24,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-21 11:29:24,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:24,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-21 11:29:24,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:24,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 11:29:24,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:24,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-21 11:29:24,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:24,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 11:29:24,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:24,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 11:29:24,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:24,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 11:29:24,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:24,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 11:29:24,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:24,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 11:29:24,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:24,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 11:29:24,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:24,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-21 11:29:24,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:24,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-12-21 11:29:24,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:24,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2023-12-21 11:29:24,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:24,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2023-12-21 11:29:24,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:24,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-12-21 11:29:24,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:24,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2023-12-21 11:29:24,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:24,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-12-21 11:29:24,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:24,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2023-12-21 11:29:24,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:24,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-21 11:29:24,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:24,276 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 31 proven. 7 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2023-12-21 11:29:24,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:29:24,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143847525] [2023-12-21 11:29:24,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143847525] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:29:24,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414054963] [2023-12-21 11:29:24,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:29:24,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:29:24,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:29:24,281 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:29:24,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-21 11:29:24,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:24,458 INFO L262 TraceCheckSpWp]: Trace formula consists of 824 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-21 11:29:24,461 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:29:24,856 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 121 proven. 7 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-12-21 11:29:24,856 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:29:25,153 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 35 proven. 3 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2023-12-21 11:29:25,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414054963] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:29:25,154 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:29:25,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 8] total 24 [2023-12-21 11:29:25,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635970128] [2023-12-21 11:29:25,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:29:25,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-21 11:29:25,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:29:25,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-21 11:29:25,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=470, Unknown=0, NotChecked=0, Total=552 [2023-12-21 11:29:25,155 INFO L87 Difference]: Start difference. First operand 41800 states and 52786 transitions. Second operand has 24 states, 24 states have (on average 12.458333333333334) internal successors, (299), 24 states have internal predecessors, (299), 10 states have call successors, (56), 5 states have call predecessors, (56), 6 states have return successors, (55), 9 states have call predecessors, (55), 10 states have call successors, (55) [2023-12-21 11:29:38,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:29:38,008 INFO L93 Difference]: Finished difference Result 83071 states and 105253 transitions. [2023-12-21 11:29:38,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2023-12-21 11:29:38,009 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 12.458333333333334) internal successors, (299), 24 states have internal predecessors, (299), 10 states have call successors, (56), 5 states have call predecessors, (56), 6 states have return successors, (55), 9 states have call predecessors, (55), 10 states have call successors, (55) Word has length 212 [2023-12-21 11:29:38,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:29:38,148 INFO L225 Difference]: With dead ends: 83071 [2023-12-21 11:29:38,148 INFO L226 Difference]: Without dead ends: 42909 [2023-12-21 11:29:38,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 559 GetRequests, 470 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2391 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1285, Invalid=6905, Unknown=0, NotChecked=0, Total=8190 [2023-12-21 11:29:38,191 INFO L413 NwaCegarLoop]: 472 mSDtfsCounter, 2121 mSDsluCounter, 4504 mSDsCounter, 0 mSdLazyCounter, 2550 mSolverCounterSat, 707 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2121 SdHoareTripleChecker+Valid, 4976 SdHoareTripleChecker+Invalid, 3257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 707 IncrementalHoareTripleChecker+Valid, 2550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-21 11:29:38,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2121 Valid, 4976 Invalid, 3257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [707 Valid, 2550 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-21 11:29:38,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42909 states. [2023-12-21 11:29:49,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42909 to 42385. [2023-12-21 11:29:49,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42385 states, 31392 states have (on average 1.2702917940876657) internal successors, (39877), 31768 states have internal predecessors, (39877), 6835 states have call successors, (6835), 4127 states have call predecessors, (6835), 4157 states have return successors, (6865), 6489 states have call predecessors, (6865), 6835 states have call successors, (6865) [2023-12-21 11:29:49,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42385 states to 42385 states and 53577 transitions. [2023-12-21 11:29:49,320 INFO L78 Accepts]: Start accepts. Automaton has 42385 states and 53577 transitions. Word has length 212 [2023-12-21 11:29:49,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:29:49,321 INFO L495 AbstractCegarLoop]: Abstraction has 42385 states and 53577 transitions. [2023-12-21 11:29:49,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 12.458333333333334) internal successors, (299), 24 states have internal predecessors, (299), 10 states have call successors, (56), 5 states have call predecessors, (56), 6 states have return successors, (55), 9 states have call predecessors, (55), 10 states have call successors, (55) [2023-12-21 11:29:49,321 INFO L276 IsEmpty]: Start isEmpty. Operand 42385 states and 53577 transitions. [2023-12-21 11:29:49,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2023-12-21 11:29:49,349 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:29:49,350 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:29:49,357 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-12-21 11:29:49,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:29:49,558 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:29:49,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:29:49,558 INFO L85 PathProgramCache]: Analyzing trace with hash -863930931, now seen corresponding path program 1 times [2023-12-21 11:29:49,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:29:49,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912907987] [2023-12-21 11:29:49,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:29:49,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:29:49,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:49,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:29:49,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:49,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-21 11:29:49,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:49,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-21 11:29:49,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:49,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-21 11:29:49,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:49,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 11:29:49,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:49,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-21 11:29:49,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:49,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 11:29:49,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:49,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 11:29:49,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:49,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 11:29:49,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:49,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 11:29:49,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:49,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 11:29:49,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:49,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 11:29:49,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:49,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-21 11:29:49,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:49,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-12-21 11:29:49,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:49,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-12-21 11:29:49,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:49,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-12-21 11:29:49,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:49,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-12-21 11:29:49,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:49,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-12-21 11:29:49,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:49,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2023-12-21 11:29:49,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:49,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2023-12-21 11:29:49,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:49,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2023-12-21 11:29:49,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:49,861 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 22 proven. 18 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-12-21 11:29:49,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:29:49,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912907987] [2023-12-21 11:29:49,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912907987] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:29:49,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183849088] [2023-12-21 11:29:49,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:29:49,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:29:49,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:29:49,889 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:29:49,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-21 11:29:50,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:50,060 INFO L262 TraceCheckSpWp]: Trace formula consists of 823 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-21 11:29:50,066 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:29:50,981 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 81 proven. 47 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-12-21 11:29:50,982 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:29:51,404 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 22 proven. 18 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-12-21 11:29:51,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183849088] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:29:51,404 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:29:51,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 11] total 27 [2023-12-21 11:29:51,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736782720] [2023-12-21 11:29:51,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:29:51,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-21 11:29:51,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:29:51,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-21 11:29:51,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=616, Unknown=0, NotChecked=0, Total=702 [2023-12-21 11:29:51,409 INFO L87 Difference]: Start difference. First operand 42385 states and 53577 transitions. Second operand has 27 states, 27 states have (on average 11.296296296296296) internal successors, (305), 25 states have internal predecessors, (305), 11 states have call successors, (56), 6 states have call predecessors, (56), 9 states have return successors, (56), 13 states have call predecessors, (56), 11 states have call successors, (56) [2023-12-21 11:30:08,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:30:08,992 INFO L93 Difference]: Finished difference Result 94570 states and 121586 transitions. [2023-12-21 11:30:08,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-21 11:30:08,992 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 11.296296296296296) internal successors, (305), 25 states have internal predecessors, (305), 11 states have call successors, (56), 6 states have call predecessors, (56), 9 states have return successors, (56), 13 states have call predecessors, (56), 11 states have call successors, (56) Word has length 213 [2023-12-21 11:30:08,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:30:09,174 INFO L225 Difference]: With dead ends: 94570 [2023-12-21 11:30:09,174 INFO L226 Difference]: Without dead ends: 54147 [2023-12-21 11:30:09,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 512 GetRequests, 456 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 748 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=533, Invalid=2773, Unknown=0, NotChecked=0, Total=3306 [2023-12-21 11:30:09,229 INFO L413 NwaCegarLoop]: 362 mSDtfsCounter, 1442 mSDsluCounter, 3238 mSDsCounter, 0 mSdLazyCounter, 1950 mSolverCounterSat, 571 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1442 SdHoareTripleChecker+Valid, 3600 SdHoareTripleChecker+Invalid, 2521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 571 IncrementalHoareTripleChecker+Valid, 1950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:30:09,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1442 Valid, 3600 Invalid, 2521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [571 Valid, 1950 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-21 11:30:09,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54147 states. [2023-12-21 11:30:21,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54147 to 43667. [2023-12-21 11:30:21,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43667 states, 32370 states have (on average 1.2703738029039233) internal successors, (41122), 32750 states have internal predecessors, (41122), 7022 states have call successors, (7022), 4250 states have call predecessors, (7022), 4274 states have return successors, (7046), 6666 states have call predecessors, (7046), 7022 states have call successors, (7046) [2023-12-21 11:30:21,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43667 states to 43667 states and 55190 transitions. [2023-12-21 11:30:21,492 INFO L78 Accepts]: Start accepts. Automaton has 43667 states and 55190 transitions. Word has length 213 [2023-12-21 11:30:21,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:30:21,492 INFO L495 AbstractCegarLoop]: Abstraction has 43667 states and 55190 transitions. [2023-12-21 11:30:21,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 11.296296296296296) internal successors, (305), 25 states have internal predecessors, (305), 11 states have call successors, (56), 6 states have call predecessors, (56), 9 states have return successors, (56), 13 states have call predecessors, (56), 11 states have call successors, (56) [2023-12-21 11:30:21,493 INFO L276 IsEmpty]: Start isEmpty. Operand 43667 states and 55190 transitions. [2023-12-21 11:30:21,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2023-12-21 11:30:21,534 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:30:21,534 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 6, 6, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:30:21,542 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-12-21 11:30:21,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:30:21,735 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:30:21,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:30:21,735 INFO L85 PathProgramCache]: Analyzing trace with hash 4817713, now seen corresponding path program 1 times [2023-12-21 11:30:21,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:30:21,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178986459] [2023-12-21 11:30:21,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:30:21,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:30:21,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:21,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:30:21,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:21,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:30:21,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:21,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-21 11:30:21,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:21,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-21 11:30:21,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:21,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-21 11:30:21,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:21,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 11:30:21,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:21,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 11:30:21,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:21,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 11:30:21,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:21,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-21 11:30:21,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:21,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-21 11:30:21,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:21,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-21 11:30:21,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:21,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-21 11:30:21,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:21,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-21 11:30:21,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:21,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-12-21 11:30:21,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:21,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-12-21 11:30:21,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:21,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-12-21 11:30:21,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:21,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-12-21 11:30:21,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:21,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2023-12-21 11:30:21,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:21,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2023-12-21 11:30:21,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:21,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2023-12-21 11:30:21,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:21,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2023-12-21 11:30:21,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:21,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2023-12-21 11:30:21,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:21,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2023-12-21 11:30:21,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:21,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2023-12-21 11:30:21,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:21,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-12-21 11:30:21,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:21,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2023-12-21 11:30:21,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:21,917 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2023-12-21 11:30:21,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:30:21,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178986459] [2023-12-21 11:30:21,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178986459] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:30:21,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:30:21,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:30:21,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163031116] [2023-12-21 11:30:21,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:30:21,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:30:21,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:30:21,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:30:21,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:30:21,918 INFO L87 Difference]: Start difference. First operand 43667 states and 55190 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-21 11:30:33,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:30:33,556 INFO L93 Difference]: Finished difference Result 84526 states and 107388 transitions. [2023-12-21 11:30:33,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 11:30:33,557 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 247 [2023-12-21 11:30:33,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:30:33,674 INFO L225 Difference]: With dead ends: 84526 [2023-12-21 11:30:33,674 INFO L226 Difference]: Without dead ends: 43049 [2023-12-21 11:30:33,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 11:30:33,725 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 7 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:30:33,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 712 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:30:33,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43049 states. [2023-12-21 11:30:45,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43049 to 43025. [2023-12-21 11:30:45,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43025 states, 32049 states have (on average 1.2473400106087553) internal successors, (39976), 32420 states have internal predecessors, (39976), 6707 states have call successors, (6707), 4247 states have call predecessors, (6707), 4268 states have return successors, (6728), 6357 states have call predecessors, (6728), 6707 states have call successors, (6728) [2023-12-21 11:30:45,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43025 states to 43025 states and 53411 transitions. [2023-12-21 11:30:45,225 INFO L78 Accepts]: Start accepts. Automaton has 43025 states and 53411 transitions. Word has length 247 [2023-12-21 11:30:45,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:30:45,225 INFO L495 AbstractCegarLoop]: Abstraction has 43025 states and 53411 transitions. [2023-12-21 11:30:45,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-21 11:30:45,226 INFO L276 IsEmpty]: Start isEmpty. Operand 43025 states and 53411 transitions. [2023-12-21 11:30:45,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2023-12-21 11:30:45,246 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:30:45,246 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:30:45,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2023-12-21 11:30:45,247 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:30:45,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:30:45,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1852892190, now seen corresponding path program 1 times [2023-12-21 11:30:45,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:30:45,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463681171] [2023-12-21 11:30:45,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:30:45,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:30:45,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:45,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:30:45,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:45,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:30:45,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:45,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-21 11:30:45,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:45,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-21 11:30:45,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:45,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 11:30:45,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:45,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 11:30:45,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:45,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 11:30:45,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:45,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 11:30:45,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:45,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 11:30:45,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:45,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 11:30:45,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:45,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 11:30:45,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:45,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-21 11:30:45,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:45,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-21 11:30:45,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:45,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-21 11:30:45,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:45,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-12-21 11:30:45,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:45,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-12-21 11:30:45,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:45,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-12-21 11:30:45,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:45,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2023-12-21 11:30:45,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:45,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-12-21 11:30:45,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:45,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2023-12-21 11:30:45,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:45,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2023-12-21 11:30:45,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:45,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-12-21 11:30:45,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:45,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2023-12-21 11:30:45,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:45,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2023-12-21 11:30:45,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:45,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2023-12-21 11:30:45,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:45,775 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 49 proven. 41 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2023-12-21 11:30:45,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:30:45,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463681171] [2023-12-21 11:30:45,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463681171] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:30:45,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381984646] [2023-12-21 11:30:45,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:30:45,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:30:45,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:30:45,776 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:30:45,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-21 11:30:45,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:45,965 INFO L262 TraceCheckSpWp]: Trace formula consists of 970 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 11:30:45,968 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:30:46,163 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 195 proven. 62 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-21 11:30:46,163 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:30:46,343 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 69 proven. 23 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2023-12-21 11:30:46,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381984646] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:30:46,343 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:30:46,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 19 [2023-12-21 11:30:46,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127636749] [2023-12-21 11:30:46,344 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:30:46,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-21 11:30:46,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:30:46,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-21 11:30:46,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2023-12-21 11:30:46,345 INFO L87 Difference]: Start difference. First operand 43025 states and 53411 transitions. Second operand has 19 states, 19 states have (on average 14.842105263157896) internal successors, (282), 18 states have internal predecessors, (282), 8 states have call successors, (68), 4 states have call predecessors, (68), 6 states have return successors, (68), 9 states have call predecessors, (68), 8 states have call successors, (68) [2023-12-21 11:31:00,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:31:00,309 INFO L93 Difference]: Finished difference Result 85949 states and 106651 transitions. [2023-12-21 11:31:00,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-12-21 11:31:00,310 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 14.842105263157896) internal successors, (282), 18 states have internal predecessors, (282), 8 states have call successors, (68), 4 states have call predecessors, (68), 6 states have return successors, (68), 9 states have call predecessors, (68), 8 states have call successors, (68) Word has length 247 [2023-12-21 11:31:00,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:31:00,425 INFO L225 Difference]: With dead ends: 85949 [2023-12-21 11:31:00,425 INFO L226 Difference]: Without dead ends: 45029 [2023-12-21 11:31:00,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 624 GetRequests, 552 SyntacticMatches, 4 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1264 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=890, Invalid=3940, Unknown=0, NotChecked=0, Total=4830 [2023-12-21 11:31:00,474 INFO L413 NwaCegarLoop]: 493 mSDtfsCounter, 1783 mSDsluCounter, 4182 mSDsCounter, 0 mSdLazyCounter, 2063 mSolverCounterSat, 594 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1783 SdHoareTripleChecker+Valid, 4675 SdHoareTripleChecker+Invalid, 2657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 594 IncrementalHoareTripleChecker+Valid, 2063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-21 11:31:00,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1783 Valid, 4675 Invalid, 2657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [594 Valid, 2063 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-21 11:31:00,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45029 states. [2023-12-21 11:31:12,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45029 to 43031. [2023-12-21 11:31:12,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43031 states, 32061 states have (on average 1.243629331586663) internal successors, (39872), 32426 states have internal predecessors, (39872), 6704 states have call successors, (6704), 4246 states have call predecessors, (6704), 4265 states have return successors, (6723), 6358 states have call predecessors, (6723), 6704 states have call successors, (6723) [2023-12-21 11:31:12,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43031 states to 43031 states and 53299 transitions. [2023-12-21 11:31:12,899 INFO L78 Accepts]: Start accepts. Automaton has 43031 states and 53299 transitions. Word has length 247 [2023-12-21 11:31:12,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:31:12,899 INFO L495 AbstractCegarLoop]: Abstraction has 43031 states and 53299 transitions. [2023-12-21 11:31:12,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 14.842105263157896) internal successors, (282), 18 states have internal predecessors, (282), 8 states have call successors, (68), 4 states have call predecessors, (68), 6 states have return successors, (68), 9 states have call predecessors, (68), 8 states have call successors, (68) [2023-12-21 11:31:12,900 INFO L276 IsEmpty]: Start isEmpty. Operand 43031 states and 53299 transitions. [2023-12-21 11:31:12,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2023-12-21 11:31:12,921 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:31:12,921 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:31:12,928 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-12-21 11:31:13,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:31:13,129 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:31:13,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:31:13,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1825874288, now seen corresponding path program 1 times [2023-12-21 11:31:13,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:31:13,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399447975] [2023-12-21 11:31:13,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:31:13,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:31:13,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:13,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:31:13,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:13,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:31:13,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:13,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-21 11:31:13,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:13,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-21 11:31:13,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:13,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-21 11:31:13,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:13,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 11:31:13,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:13,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 11:31:13,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:13,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 11:31:13,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:13,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-21 11:31:13,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:13,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-21 11:31:13,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:13,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-21 11:31:13,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:13,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-21 11:31:13,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:13,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-21 11:31:13,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:13,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-21 11:31:13,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:13,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-12-21 11:31:13,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:13,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-12-21 11:31:13,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:13,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-12-21 11:31:13,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:13,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-12-21 11:31:13,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:13,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2023-12-21 11:31:13,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:13,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2023-12-21 11:31:13,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:13,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-21 11:31:13,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:13,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2023-12-21 11:31:13,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:13,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-12-21 11:31:13,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:13,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2023-12-21 11:31:13,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:13,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-12-21 11:31:13,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:13,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2023-12-21 11:31:13,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:13,391 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 63 proven. 21 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2023-12-21 11:31:13,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:31:13,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399447975] [2023-12-21 11:31:13,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399447975] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:31:13,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360084047] [2023-12-21 11:31:13,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:31:13,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:31:13,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:31:13,393 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:31:13,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-21 11:31:13,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:13,598 INFO L262 TraceCheckSpWp]: Trace formula consists of 983 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 11:31:13,602 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:31:13,766 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 168 proven. 74 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-12-21 11:31:13,767 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:31:13,924 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 63 proven. 21 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2023-12-21 11:31:13,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360084047] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:31:13,924 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:31:13,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 12 [2023-12-21 11:31:13,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780581093] [2023-12-21 11:31:13,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:31:13,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 11:31:13,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:31:13,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 11:31:13,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-21 11:31:13,926 INFO L87 Difference]: Start difference. First operand 43031 states and 53299 transitions. Second operand has 12 states, 12 states have (on average 17.75) internal successors, (213), 11 states have internal predecessors, (213), 5 states have call successors, (52), 4 states have call predecessors, (52), 7 states have return successors, (53), 6 states have call predecessors, (53), 5 states have call successors, (53) [2023-12-21 11:31:26,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:31:26,494 INFO L93 Difference]: Finished difference Result 85663 states and 106022 transitions. [2023-12-21 11:31:26,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-21 11:31:26,495 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 17.75) internal successors, (213), 11 states have internal predecessors, (213), 5 states have call successors, (52), 4 states have call predecessors, (52), 7 states have return successors, (53), 6 states have call predecessors, (53), 5 states have call successors, (53) Word has length 250 [2023-12-21 11:31:26,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:31:26,626 INFO L225 Difference]: With dead ends: 85663 [2023-12-21 11:31:26,626 INFO L226 Difference]: Without dead ends: 44669 [2023-12-21 11:31:26,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 580 GetRequests, 549 SyntacticMatches, 6 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=172, Invalid=530, Unknown=0, NotChecked=0, Total=702 [2023-12-21 11:31:26,676 INFO L413 NwaCegarLoop]: 411 mSDtfsCounter, 1049 mSDsluCounter, 1768 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1059 SdHoareTripleChecker+Valid, 2179 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 11:31:26,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1059 Valid, 2179 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 11:31:26,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44669 states. [2023-12-21 11:31:38,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44669 to 43015. [2023-12-21 11:31:38,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43015 states, 32053 states have (on average 1.2371384893769695) internal successors, (39654), 32412 states have internal predecessors, (39654), 6700 states have call successors, (6700), 4244 states have call predecessors, (6700), 4261 states have return successors, (6717), 6358 states have call predecessors, (6717), 6700 states have call successors, (6717) [2023-12-21 11:31:38,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43015 states to 43015 states and 53071 transitions. [2023-12-21 11:31:38,961 INFO L78 Accepts]: Start accepts. Automaton has 43015 states and 53071 transitions. Word has length 250 [2023-12-21 11:31:38,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:31:38,962 INFO L495 AbstractCegarLoop]: Abstraction has 43015 states and 53071 transitions. [2023-12-21 11:31:38,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 17.75) internal successors, (213), 11 states have internal predecessors, (213), 5 states have call successors, (52), 4 states have call predecessors, (52), 7 states have return successors, (53), 6 states have call predecessors, (53), 5 states have call successors, (53) [2023-12-21 11:31:38,962 INFO L276 IsEmpty]: Start isEmpty. Operand 43015 states and 53071 transitions. [2023-12-21 11:31:38,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2023-12-21 11:31:38,981 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:31:38,981 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:31:38,988 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-12-21 11:31:39,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2023-12-21 11:31:39,189 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:31:39,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:31:39,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1081473696, now seen corresponding path program 1 times [2023-12-21 11:31:39,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:31:39,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248016982] [2023-12-21 11:31:39,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:31:39,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:31:39,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:39,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:31:39,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:39,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:31:39,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:39,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-21 11:31:39,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:39,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-21 11:31:39,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:39,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-21 11:31:39,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:39,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 11:31:39,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:39,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 11:31:39,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:39,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 11:31:39,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:39,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-21 11:31:39,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:39,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-21 11:31:39,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:39,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-21 11:31:39,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:39,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-21 11:31:39,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:39,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-21 11:31:39,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:39,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-21 11:31:39,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:39,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-12-21 11:31:39,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:39,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-12-21 11:31:39,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:39,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-12-21 11:31:39,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:39,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-12-21 11:31:39,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:39,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2023-12-21 11:31:39,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:39,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-12-21 11:31:39,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:39,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2023-12-21 11:31:39,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:39,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2023-12-21 11:31:39,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:39,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2023-12-21 11:31:39,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:39,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2023-12-21 11:31:39,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:39,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-12-21 11:31:39,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:39,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2023-12-21 11:31:39,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:39,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2023-12-21 11:31:39,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:39,456 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 61 proven. 22 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2023-12-21 11:31:39,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:31:39,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248016982] [2023-12-21 11:31:39,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248016982] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:31:39,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272629047] [2023-12-21 11:31:39,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:31:39,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:31:39,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:31:39,473 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:31:39,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-21 11:31:39,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:39,670 INFO L262 TraceCheckSpWp]: Trace formula consists of 1002 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-21 11:31:39,673 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:31:39,834 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 249 proven. 42 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-21 11:31:39,834 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:31:40,016 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 72 proven. 17 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2023-12-21 11:31:40,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272629047] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:31:40,016 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:31:40,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10] total 16 [2023-12-21 11:31:40,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663362573] [2023-12-21 11:31:40,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:31:40,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-21 11:31:40,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:31:40,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-21 11:31:40,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2023-12-21 11:31:40,018 INFO L87 Difference]: Start difference. First operand 43015 states and 53071 transitions. Second operand has 16 states, 16 states have (on average 13.625) internal successors, (218), 13 states have internal predecessors, (218), 4 states have call successors, (53), 4 states have call predecessors, (53), 9 states have return successors, (55), 7 states have call predecessors, (55), 4 states have call successors, (55) [2023-12-21 11:31:54,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:31:54,272 INFO L93 Difference]: Finished difference Result 88069 states and 108752 transitions. [2023-12-21 11:31:54,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-21 11:31:54,273 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 13.625) internal successors, (218), 13 states have internal predecessors, (218), 4 states have call successors, (53), 4 states have call predecessors, (53), 9 states have return successors, (55), 7 states have call predecessors, (55), 4 states have call successors, (55) Word has length 258 [2023-12-21 11:31:54,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:31:54,393 INFO L225 Difference]: With dead ends: 88069 [2023-12-21 11:31:54,394 INFO L226 Difference]: Without dead ends: 41461 [2023-12-21 11:31:54,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 610 GetRequests, 561 SyntacticMatches, 6 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=355, Invalid=1625, Unknown=0, NotChecked=0, Total=1980 [2023-12-21 11:31:54,447 INFO L413 NwaCegarLoop]: 567 mSDtfsCounter, 789 mSDsluCounter, 4944 mSDsCounter, 0 mSdLazyCounter, 1875 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 798 SdHoareTripleChecker+Valid, 5511 SdHoareTripleChecker+Invalid, 2106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 1875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:31:54,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [798 Valid, 5511 Invalid, 2106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 1875 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-21 11:31:54,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41461 states. [2023-12-21 11:32:04,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41461 to 32779. [2023-12-21 11:32:04,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32779 states, 24419 states have (on average 1.2257258692002129) internal successors, (29931), 24691 states have internal predecessors, (29931), 5105 states have call successors, (5105), 3237 states have call predecessors, (5105), 3254 states have return successors, (5109), 4850 states have call predecessors, (5109), 5092 states have call successors, (5109) [2023-12-21 11:32:04,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32779 states to 32779 states and 40145 transitions. [2023-12-21 11:32:04,340 INFO L78 Accepts]: Start accepts. Automaton has 32779 states and 40145 transitions. Word has length 258 [2023-12-21 11:32:04,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:32:04,341 INFO L495 AbstractCegarLoop]: Abstraction has 32779 states and 40145 transitions. [2023-12-21 11:32:04,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 13.625) internal successors, (218), 13 states have internal predecessors, (218), 4 states have call successors, (53), 4 states have call predecessors, (53), 9 states have return successors, (55), 7 states have call predecessors, (55), 4 states have call successors, (55) [2023-12-21 11:32:04,341 INFO L276 IsEmpty]: Start isEmpty. Operand 32779 states and 40145 transitions. [2023-12-21 11:32:04,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2023-12-21 11:32:04,358 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:32:04,358 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:32:04,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-12-21 11:32:04,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2023-12-21 11:32:04,565 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:32:04,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:32:04,565 INFO L85 PathProgramCache]: Analyzing trace with hash -99420673, now seen corresponding path program 1 times [2023-12-21 11:32:04,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:32:04,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507174008] [2023-12-21 11:32:04,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:32:04,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:32:04,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:04,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:32:04,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:04,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:32:04,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:04,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-21 11:32:04,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:04,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-21 11:32:04,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:04,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 11:32:04,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:04,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 11:32:04,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:04,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 11:32:04,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:04,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 11:32:04,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:04,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 11:32:04,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:04,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 11:32:04,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:04,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 11:32:04,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:04,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-21 11:32:04,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:04,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-21 11:32:04,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:04,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-21 11:32:04,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:04,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-12-21 11:32:04,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:04,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-12-21 11:32:04,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:04,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-12-21 11:32:04,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:04,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2023-12-21 11:32:04,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:04,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-12-21 11:32:04,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:04,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2023-12-21 11:32:04,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:04,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2023-12-21 11:32:04,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:04,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2023-12-21 11:32:04,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:04,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-12-21 11:32:04,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:04,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2023-12-21 11:32:04,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:04,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2023-12-21 11:32:04,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:04,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2023-12-21 11:32:04,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:04,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2023-12-21 11:32:04,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:04,802 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 86 proven. 2 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2023-12-21 11:32:04,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:32:04,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507174008] [2023-12-21 11:32:04,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507174008] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:32:04,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550253879] [2023-12-21 11:32:04,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:32:04,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:32:04,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:32:04,804 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:32:04,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-12-21 11:32:05,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:05,021 INFO L262 TraceCheckSpWp]: Trace formula consists of 1007 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-21 11:32:05,024 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:32:05,157 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 211 proven. 11 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-12-21 11:32:05,158 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:32:05,311 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 71 proven. 2 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2023-12-21 11:32:05,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550253879] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:32:05,311 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:32:05,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10] total 19 [2023-12-21 11:32:05,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180745353] [2023-12-21 11:32:05,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:32:05,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-21 11:32:05,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:32:05,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-21 11:32:05,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2023-12-21 11:32:05,313 INFO L87 Difference]: Start difference. First operand 32779 states and 40145 transitions. Second operand has 19 states, 19 states have (on average 11.263157894736842) internal successors, (214), 15 states have internal predecessors, (214), 6 states have call successors, (48), 4 states have call predecessors, (48), 8 states have return successors, (48), 10 states have call predecessors, (48), 6 states have call successors, (48) [2023-12-21 11:32:15,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:32:15,604 INFO L93 Difference]: Finished difference Result 62479 states and 76216 transitions. [2023-12-21 11:32:15,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-21 11:32:15,605 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 11.263157894736842) internal successors, (214), 15 states have internal predecessors, (214), 6 states have call successors, (48), 4 states have call predecessors, (48), 8 states have return successors, (48), 10 states have call predecessors, (48), 6 states have call successors, (48) Word has length 262 [2023-12-21 11:32:15,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:32:15,682 INFO L225 Difference]: With dead ends: 62479 [2023-12-21 11:32:15,682 INFO L226 Difference]: Without dead ends: 31538 [2023-12-21 11:32:15,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 618 GetRequests, 580 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=242, Invalid=1240, Unknown=0, NotChecked=0, Total=1482 [2023-12-21 11:32:15,713 INFO L413 NwaCegarLoop]: 734 mSDtfsCounter, 1959 mSDsluCounter, 5912 mSDsCounter, 0 mSdLazyCounter, 1932 mSolverCounterSat, 864 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1959 SdHoareTripleChecker+Valid, 6646 SdHoareTripleChecker+Invalid, 2796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 864 IncrementalHoareTripleChecker+Valid, 1932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:32:15,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1959 Valid, 6646 Invalid, 2796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [864 Valid, 1932 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-21 11:32:15,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31538 states. [2023-12-21 11:32:24,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31538 to 29598. [2023-12-21 11:32:24,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29598 states, 22131 states have (on average 1.2152184718268493) internal successors, (26894), 22381 states have internal predecessors, (26894), 4498 states have call successors, (4498), 2952 states have call predecessors, (4498), 2968 states have return successors, (4505), 4264 states have call predecessors, (4505), 4488 states have call successors, (4505) [2023-12-21 11:32:24,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29598 states to 29598 states and 35897 transitions. [2023-12-21 11:32:24,594 INFO L78 Accepts]: Start accepts. Automaton has 29598 states and 35897 transitions. Word has length 262 [2023-12-21 11:32:24,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:32:24,594 INFO L495 AbstractCegarLoop]: Abstraction has 29598 states and 35897 transitions. [2023-12-21 11:32:24,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 11.263157894736842) internal successors, (214), 15 states have internal predecessors, (214), 6 states have call successors, (48), 4 states have call predecessors, (48), 8 states have return successors, (48), 10 states have call predecessors, (48), 6 states have call successors, (48) [2023-12-21 11:32:24,594 INFO L276 IsEmpty]: Start isEmpty. Operand 29598 states and 35897 transitions. [2023-12-21 11:32:24,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2023-12-21 11:32:24,613 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:32:24,613 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:32:24,620 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-12-21 11:32:24,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2023-12-21 11:32:24,820 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:32:24,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:32:24,820 INFO L85 PathProgramCache]: Analyzing trace with hash -2006524344, now seen corresponding path program 1 times [2023-12-21 11:32:24,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:32:24,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806016588] [2023-12-21 11:32:24,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:32:24,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:32:24,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:25,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:32:25,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:25,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:32:25,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:25,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-21 11:32:25,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:25,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-21 11:32:25,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:25,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 11:32:25,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:25,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 11:32:25,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:25,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 11:32:25,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:25,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 11:32:25,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:25,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 11:32:25,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:25,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 11:32:25,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:25,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 11:32:25,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:25,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-21 11:32:25,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:25,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-21 11:32:25,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:25,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-21 11:32:25,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:25,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-12-21 11:32:25,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:25,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-12-21 11:32:25,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:25,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-12-21 11:32:25,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:25,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2023-12-21 11:32:25,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:25,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2023-12-21 11:32:25,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:25,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2023-12-21 11:32:25,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:25,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-21 11:32:25,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:25,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2023-12-21 11:32:25,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:25,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2023-12-21 11:32:25,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:25,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2023-12-21 11:32:25,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:25,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2023-12-21 11:32:25,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:25,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2023-12-21 11:32:25,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:25,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2023-12-21 11:32:25,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:25,212 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 60 proven. 27 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2023-12-21 11:32:25,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:32:25,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806016588] [2023-12-21 11:32:25,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806016588] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:32:25,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538904353] [2023-12-21 11:32:25,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:32:25,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:32:25,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:32:25,213 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:32:25,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-12-21 11:32:25,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:25,417 INFO L262 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-21 11:32:25,421 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:32:25,994 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 129 proven. 165 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-12-21 11:32:25,994 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:32:26,523 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 36 proven. 51 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2023-12-21 11:32:26,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538904353] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:32:26,523 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:32:26,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-12-21 11:32:26,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534676562] [2023-12-21 11:32:26,524 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:32:26,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-21 11:32:26,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:32:26,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-21 11:32:26,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=471, Unknown=0, NotChecked=0, Total=552 [2023-12-21 11:32:26,525 INFO L87 Difference]: Start difference. First operand 29598 states and 35897 transitions. Second operand has 24 states, 24 states have (on average 16.291666666666668) internal successors, (391), 24 states have internal predecessors, (391), 14 states have call successors, (76), 7 states have call predecessors, (76), 7 states have return successors, (75), 14 states have call predecessors, (75), 14 states have call successors, (75) [2023-12-21 11:32:37,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:32:37,800 INFO L93 Difference]: Finished difference Result 57516 states and 69967 transitions. [2023-12-21 11:32:37,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2023-12-21 11:32:37,801 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 16.291666666666668) internal successors, (391), 24 states have internal predecessors, (391), 14 states have call successors, (76), 7 states have call predecessors, (76), 7 states have return successors, (75), 14 states have call predecessors, (75), 14 states have call successors, (75) Word has length 263 [2023-12-21 11:32:37,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:32:37,872 INFO L225 Difference]: With dead ends: 57516 [2023-12-21 11:32:37,872 INFO L226 Difference]: Without dead ends: 29770 [2023-12-21 11:32:37,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 697 GetRequests, 595 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3174 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1755, Invalid=8957, Unknown=0, NotChecked=0, Total=10712 [2023-12-21 11:32:37,904 INFO L413 NwaCegarLoop]: 559 mSDtfsCounter, 1918 mSDsluCounter, 4438 mSDsCounter, 0 mSdLazyCounter, 3083 mSolverCounterSat, 662 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1918 SdHoareTripleChecker+Valid, 4997 SdHoareTripleChecker+Invalid, 3745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 662 IncrementalHoareTripleChecker+Valid, 3083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-21 11:32:37,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1918 Valid, 4997 Invalid, 3745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [662 Valid, 3083 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-21 11:32:37,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29770 states. [2023-12-21 11:32:46,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29770 to 28243. [2023-12-21 11:32:46,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28243 states, 21096 states have (on average 1.2124573378839592) internal successors, (25578), 21345 states have internal predecessors, (25578), 4310 states have call successors, (4310), 2821 states have call predecessors, (4310), 2836 states have return successors, (4316), 4076 states have call predecessors, (4316), 4300 states have call successors, (4316) [2023-12-21 11:32:46,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28243 states to 28243 states and 34204 transitions. [2023-12-21 11:32:46,429 INFO L78 Accepts]: Start accepts. Automaton has 28243 states and 34204 transitions. Word has length 263 [2023-12-21 11:32:46,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:32:46,429 INFO L495 AbstractCegarLoop]: Abstraction has 28243 states and 34204 transitions. [2023-12-21 11:32:46,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 16.291666666666668) internal successors, (391), 24 states have internal predecessors, (391), 14 states have call successors, (76), 7 states have call predecessors, (76), 7 states have return successors, (75), 14 states have call predecessors, (75), 14 states have call successors, (75) [2023-12-21 11:32:46,429 INFO L276 IsEmpty]: Start isEmpty. Operand 28243 states and 34204 transitions. [2023-12-21 11:32:46,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2023-12-21 11:32:46,445 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:32:46,445 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:32:46,453 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-12-21 11:32:46,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:32:46,651 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:32:46,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:32:46,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1672426313, now seen corresponding path program 1 times [2023-12-21 11:32:46,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:32:46,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334670685] [2023-12-21 11:32:46,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:32:46,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:32:46,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:47,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:32:47,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:47,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-21 11:32:47,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:47,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-21 11:32:47,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:47,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-21 11:32:47,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:47,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 11:32:47,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:47,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-21 11:32:47,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:47,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 11:32:47,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:47,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 11:32:47,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:47,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 11:32:47,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:47,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 11:32:47,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:47,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 11:32:47,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:47,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 11:32:47,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:47,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-21 11:32:47,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:47,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-12-21 11:32:47,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:47,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2023-12-21 11:32:47,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:47,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-12-21 11:32:47,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:47,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2023-12-21 11:32:47,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:47,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2023-12-21 11:32:47,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:47,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2023-12-21 11:32:47,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:47,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2023-12-21 11:32:47,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:47,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2023-12-21 11:32:47,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:47,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2023-12-21 11:32:47,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:47,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2023-12-21 11:32:47,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:47,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2023-12-21 11:32:47,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:47,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-12-21 11:32:47,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:47,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2023-12-21 11:32:47,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:47,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2023-12-21 11:32:47,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:47,624 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 39 proven. 40 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2023-12-21 11:32:47,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:32:47,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334670685] [2023-12-21 11:32:47,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334670685] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:32:47,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265754713] [2023-12-21 11:32:47,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:32:47,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:32:47,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:32:47,626 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:32:47,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-12-21 11:32:47,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:47,836 INFO L262 TraceCheckSpWp]: Trace formula consists of 1028 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-21 11:32:47,839 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:32:48,451 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 120 proven. 160 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-12-21 11:32:48,452 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:32:49,686 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 26 proven. 53 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2023-12-21 11:32:49,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265754713] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:32:49,687 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:32:49,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 13] total 38 [2023-12-21 11:32:49,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948928681] [2023-12-21 11:32:49,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:32:49,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-21 11:32:49,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:32:49,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-21 11:32:49,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1276, Unknown=0, NotChecked=0, Total=1406 [2023-12-21 11:32:49,689 INFO L87 Difference]: Start difference. First operand 28243 states and 34204 transitions. Second operand has 38 states, 38 states have (on average 10.631578947368421) internal successors, (404), 38 states have internal predecessors, (404), 17 states have call successors, (77), 7 states have call predecessors, (77), 7 states have return successors, (76), 17 states have call predecessors, (76), 17 states have call successors, (76) [2023-12-21 11:33:14,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:33:14,427 INFO L93 Difference]: Finished difference Result 70804 states and 86013 transitions. [2023-12-21 11:33:14,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2023-12-21 11:33:14,429 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 10.631578947368421) internal successors, (404), 38 states have internal predecessors, (404), 17 states have call successors, (77), 7 states have call predecessors, (77), 7 states have return successors, (76), 17 states have call predecessors, (76), 17 states have call successors, (76) Word has length 264 [2023-12-21 11:33:14,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:33:14,538 INFO L225 Difference]: With dead ends: 70804 [2023-12-21 11:33:14,538 INFO L226 Difference]: Without dead ends: 44343 [2023-12-21 11:33:14,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 775 GetRequests, 583 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12522 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=3967, Invalid=33475, Unknown=0, NotChecked=0, Total=37442 [2023-12-21 11:33:14,579 INFO L413 NwaCegarLoop]: 969 mSDtfsCounter, 2799 mSDsluCounter, 12797 mSDsCounter, 0 mSdLazyCounter, 10154 mSolverCounterSat, 894 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2799 SdHoareTripleChecker+Valid, 13766 SdHoareTripleChecker+Invalid, 11048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 894 IncrementalHoareTripleChecker+Valid, 10154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:33:14,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2799 Valid, 13766 Invalid, 11048 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [894 Valid, 10154 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-12-21 11:33:14,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44343 states. [2023-12-21 11:33:26,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44343 to 36238. [2023-12-21 11:33:26,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36238 states, 27129 states have (on average 1.2186589995945298) internal successors, (33061), 27455 states have internal predecessors, (33061), 5488 states have call successors, (5488), 3597 states have call predecessors, (5488), 3620 states have return successors, (5502), 5185 states have call predecessors, (5502), 5478 states have call successors, (5502) [2023-12-21 11:33:26,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36238 states to 36238 states and 44051 transitions. [2023-12-21 11:33:26,333 INFO L78 Accepts]: Start accepts. Automaton has 36238 states and 44051 transitions. Word has length 264 [2023-12-21 11:33:26,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:33:26,333 INFO L495 AbstractCegarLoop]: Abstraction has 36238 states and 44051 transitions. [2023-12-21 11:33:26,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 10.631578947368421) internal successors, (404), 38 states have internal predecessors, (404), 17 states have call successors, (77), 7 states have call predecessors, (77), 7 states have return successors, (76), 17 states have call predecessors, (76), 17 states have call successors, (76) [2023-12-21 11:33:26,334 INFO L276 IsEmpty]: Start isEmpty. Operand 36238 states and 44051 transitions. [2023-12-21 11:33:26,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2023-12-21 11:33:26,356 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:33:26,356 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:33:26,363 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2023-12-21 11:33:26,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:33:26,568 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:33:26,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:33:26,568 INFO L85 PathProgramCache]: Analyzing trace with hash 200599851, now seen corresponding path program 1 times [2023-12-21 11:33:26,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:33:26,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492557392] [2023-12-21 11:33:26,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:33:26,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:33:26,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:27,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:33:27,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:27,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:33:27,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:27,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-21 11:33:27,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:27,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-21 11:33:27,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:27,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 11:33:27,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:27,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 11:33:27,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:27,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 11:33:27,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:27,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 11:33:27,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:27,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 11:33:27,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:27,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 11:33:27,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:27,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 11:33:27,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:27,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-21 11:33:27,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:27,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-21 11:33:27,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:27,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-21 11:33:27,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:27,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-12-21 11:33:27,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:27,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-12-21 11:33:27,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:27,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2023-12-21 11:33:27,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:27,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-12-21 11:33:27,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:27,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-12-21 11:33:27,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:27,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2023-12-21 11:33:27,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:27,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2023-12-21 11:33:27,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:27,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2023-12-21 11:33:27,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:27,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2023-12-21 11:33:27,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:27,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2023-12-21 11:33:27,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:27,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2023-12-21 11:33:27,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:27,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2023-12-21 11:33:27,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:27,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2023-12-21 11:33:27,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:27,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2023-12-21 11:33:27,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:27,234 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 53 proven. 37 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2023-12-21 11:33:27,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:33:27,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492557392] [2023-12-21 11:33:27,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492557392] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:33:27,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037855348] [2023-12-21 11:33:27,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:33:27,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:33:27,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:33:27,236 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:33:27,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-12-21 11:33:27,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:27,442 INFO L262 TraceCheckSpWp]: Trace formula consists of 1022 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-21 11:33:27,445 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:33:27,785 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 163 proven. 163 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-12-21 11:33:27,786 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:33:27,999 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 63 proven. 27 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2023-12-21 11:33:27,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037855348] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:33:27,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:33:28,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 7] total 21 [2023-12-21 11:33:28,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421825272] [2023-12-21 11:33:28,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:33:28,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-21 11:33:28,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:33:28,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-21 11:33:28,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2023-12-21 11:33:28,001 INFO L87 Difference]: Start difference. First operand 36238 states and 44051 transitions. Second operand has 21 states, 21 states have (on average 16.904761904761905) internal successors, (355), 21 states have internal predecessors, (355), 11 states have call successors, (79), 6 states have call predecessors, (79), 7 states have return successors, (78), 11 states have call predecessors, (78), 11 states have call successors, (78) [2023-12-21 11:33:41,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:33:41,592 INFO L93 Difference]: Finished difference Result 72744 states and 88535 transitions. [2023-12-21 11:33:41,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-12-21 11:33:41,593 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 16.904761904761905) internal successors, (355), 21 states have internal predecessors, (355), 11 states have call successors, (79), 6 states have call predecessors, (79), 7 states have return successors, (78), 11 states have call predecessors, (78), 11 states have call successors, (78) Word has length 267 [2023-12-21 11:33:41,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:33:41,691 INFO L225 Difference]: With dead ends: 72744 [2023-12-21 11:33:41,692 INFO L226 Difference]: Without dead ends: 37953 [2023-12-21 11:33:41,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 668 GetRequests, 598 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1320 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=707, Invalid=4405, Unknown=0, NotChecked=0, Total=5112 [2023-12-21 11:33:41,732 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 1012 mSDsluCounter, 4160 mSDsCounter, 0 mSdLazyCounter, 2973 mSolverCounterSat, 311 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1012 SdHoareTripleChecker+Valid, 4582 SdHoareTripleChecker+Invalid, 3284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 311 IncrementalHoareTripleChecker+Valid, 2973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-21 11:33:41,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1012 Valid, 4582 Invalid, 3284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [311 Valid, 2973 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-21 11:33:41,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37953 states. [2023-12-21 11:33:52,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37953 to 34474. [2023-12-21 11:33:52,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34474 states, 25833 states have (on average 1.2055510393682498) internal successors, (31143), 26146 states have internal predecessors, (31143), 5186 states have call successors, (5186), 3428 states have call predecessors, (5186), 3454 states have return successors, (5203), 4899 states have call predecessors, (5203), 5176 states have call successors, (5203) [2023-12-21 11:33:52,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34474 states to 34474 states and 41532 transitions. [2023-12-21 11:33:52,853 INFO L78 Accepts]: Start accepts. Automaton has 34474 states and 41532 transitions. Word has length 267 [2023-12-21 11:33:52,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:33:52,854 INFO L495 AbstractCegarLoop]: Abstraction has 34474 states and 41532 transitions. [2023-12-21 11:33:52,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 16.904761904761905) internal successors, (355), 21 states have internal predecessors, (355), 11 states have call successors, (79), 6 states have call predecessors, (79), 7 states have return successors, (78), 11 states have call predecessors, (78), 11 states have call successors, (78) [2023-12-21 11:33:52,854 INFO L276 IsEmpty]: Start isEmpty. Operand 34474 states and 41532 transitions. [2023-12-21 11:33:52,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2023-12-21 11:33:52,875 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:33:52,875 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:33:52,882 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-12-21 11:33:53,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2023-12-21 11:33:53,082 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:33:53,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:33:53,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1985273128, now seen corresponding path program 1 times [2023-12-21 11:33:53,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:33:53,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009355735] [2023-12-21 11:33:53,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:33:53,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:33:53,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:53,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:33:53,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:53,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:33:53,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:53,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-21 11:33:53,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:53,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-21 11:33:53,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:53,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 11:33:53,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:53,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 11:33:53,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:53,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 11:33:53,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:53,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 11:33:53,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:53,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 11:33:53,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:53,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 11:33:53,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:53,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 11:33:53,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:53,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-21 11:33:53,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:53,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-21 11:33:53,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:53,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-21 11:33:53,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:53,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-12-21 11:33:53,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:53,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-12-21 11:33:53,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:53,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2023-12-21 11:33:53,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:53,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-12-21 11:33:53,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:53,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-12-21 11:33:53,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:53,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2023-12-21 11:33:53,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:53,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2023-12-21 11:33:53,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:53,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2023-12-21 11:33:53,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:53,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2023-12-21 11:33:53,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:53,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2023-12-21 11:33:53,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:53,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2023-12-21 11:33:53,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:53,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2023-12-21 11:33:53,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:53,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2023-12-21 11:33:53,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:53,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2023-12-21 11:33:53,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:53,557 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 56 proven. 33 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2023-12-21 11:33:53,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:33:53,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009355735] [2023-12-21 11:33:53,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009355735] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:33:53,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434651237] [2023-12-21 11:33:53,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:33:53,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:33:53,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:33:53,574 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:33:53,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-12-21 11:33:53,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:53,786 INFO L262 TraceCheckSpWp]: Trace formula consists of 1023 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-21 11:33:53,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:33:54,408 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 163 proven. 158 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-12-21 11:33:54,408 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:33:54,969 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 41 proven. 48 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2023-12-21 11:33:54,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434651237] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:33:54,970 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:33:54,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 25 [2023-12-21 11:33:54,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294255065] [2023-12-21 11:33:54,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:33:54,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-21 11:33:54,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:33:54,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-21 11:33:54,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=511, Unknown=0, NotChecked=0, Total=600 [2023-12-21 11:33:54,971 INFO L87 Difference]: Start difference. First operand 34474 states and 41532 transitions. Second operand has 25 states, 25 states have (on average 15.16) internal successors, (379), 25 states have internal predecessors, (379), 13 states have call successors, (79), 6 states have call predecessors, (79), 6 states have return successors, (78), 13 states have call predecessors, (78), 13 states have call successors, (78) [2023-12-21 11:34:07,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:34:07,813 INFO L93 Difference]: Finished difference Result 67186 states and 81188 transitions. [2023-12-21 11:34:07,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-21 11:34:07,815 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 15.16) internal successors, (379), 25 states have internal predecessors, (379), 13 states have call successors, (79), 6 states have call predecessors, (79), 6 states have return successors, (78), 13 states have call predecessors, (78), 13 states have call successors, (78) Word has length 267 [2023-12-21 11:34:07,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:34:07,905 INFO L225 Difference]: With dead ends: 67186 [2023-12-21 11:34:07,905 INFO L226 Difference]: Without dead ends: 34615 [2023-12-21 11:34:07,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 651 GetRequests, 586 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 967 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=791, Invalid=3631, Unknown=0, NotChecked=0, Total=4422 [2023-12-21 11:34:07,942 INFO L413 NwaCegarLoop]: 539 mSDtfsCounter, 3515 mSDsluCounter, 3644 mSDsCounter, 0 mSdLazyCounter, 2267 mSolverCounterSat, 1128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3515 SdHoareTripleChecker+Valid, 4183 SdHoareTripleChecker+Invalid, 3395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1128 IncrementalHoareTripleChecker+Valid, 2267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:34:07,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3515 Valid, 4183 Invalid, 3395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1128 Valid, 2267 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-21 11:34:07,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34615 states. [2023-12-21 11:34:18,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34615 to 34114. [2023-12-21 11:34:18,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34114 states, 25557 states have (on average 1.202918965449779) internal successors, (30743), 25863 states have internal predecessors, (30743), 5136 states have call successors, (5136), 3395 states have call predecessors, (5136), 3420 states have return successors, (5152), 4855 states have call predecessors, (5152), 5126 states have call successors, (5152) [2023-12-21 11:34:18,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34114 states to 34114 states and 41031 transitions. [2023-12-21 11:34:18,657 INFO L78 Accepts]: Start accepts. Automaton has 34114 states and 41031 transitions. Word has length 267 [2023-12-21 11:34:18,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:34:18,657 INFO L495 AbstractCegarLoop]: Abstraction has 34114 states and 41031 transitions. [2023-12-21 11:34:18,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 15.16) internal successors, (379), 25 states have internal predecessors, (379), 13 states have call successors, (79), 6 states have call predecessors, (79), 6 states have return successors, (78), 13 states have call predecessors, (78), 13 states have call successors, (78) [2023-12-21 11:34:18,657 INFO L276 IsEmpty]: Start isEmpty. Operand 34114 states and 41031 transitions. [2023-12-21 11:34:18,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2023-12-21 11:34:18,688 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:34:18,688 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:34:18,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-12-21 11:34:18,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:34:18,895 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:34:18,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:34:18,895 INFO L85 PathProgramCache]: Analyzing trace with hash 129678330, now seen corresponding path program 1 times [2023-12-21 11:34:18,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:34:18,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841524965] [2023-12-21 11:34:18,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:34:18,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:34:18,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:19,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:34:19,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:19,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-21 11:34:19,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:19,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-21 11:34:19,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:19,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-21 11:34:19,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:19,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 11:34:19,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:19,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-21 11:34:19,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:19,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 11:34:19,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:19,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 11:34:19,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:19,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 11:34:19,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:19,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 11:34:19,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:19,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 11:34:19,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:19,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 11:34:19,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:19,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-21 11:34:19,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:19,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-21 11:34:19,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:19,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-12-21 11:34:19,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:19,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-12-21 11:34:19,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:19,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-12-21 11:34:19,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:19,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2023-12-21 11:34:19,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:19,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2023-12-21 11:34:19,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:19,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2023-12-21 11:34:19,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:19,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2023-12-21 11:34:19,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:19,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2023-12-21 11:34:19,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:19,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2023-12-21 11:34:19,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:19,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2023-12-21 11:34:19,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:19,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2023-12-21 11:34:19,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:19,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2023-12-21 11:34:19,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:19,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2023-12-21 11:34:19,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:19,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2023-12-21 11:34:19,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:19,753 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 45 proven. 34 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2023-12-21 11:34:19,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:34:19,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841524965] [2023-12-21 11:34:19,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841524965] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:34:19,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372115661] [2023-12-21 11:34:19,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:34:19,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:34:19,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:34:19,768 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:34:19,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-12-21 11:34:19,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:19,979 INFO L262 TraceCheckSpWp]: Trace formula consists of 1044 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-21 11:34:19,983 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:34:20,390 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 133 proven. 147 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-12-21 11:34:20,391 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:34:20,831 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 51 proven. 28 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2023-12-21 11:34:20,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372115661] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:34:20,832 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:34:20,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 11] total 32 [2023-12-21 11:34:20,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417776574] [2023-12-21 11:34:20,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:34:20,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-21 11:34:20,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:34:20,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-21 11:34:20,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=884, Unknown=0, NotChecked=0, Total=992 [2023-12-21 11:34:20,834 INFO L87 Difference]: Start difference. First operand 34114 states and 41031 transitions. Second operand has 32 states, 29 states have (on average 14.310344827586206) internal successors, (415), 29 states have internal predecessors, (415), 14 states have call successors, (80), 6 states have call predecessors, (80), 10 states have return successors, (79), 16 states have call predecessors, (79), 14 states have call successors, (79) [2023-12-21 11:34:38,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:34:38,984 INFO L93 Difference]: Finished difference Result 75117 states and 90469 transitions. [2023-12-21 11:34:38,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2023-12-21 11:34:38,984 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 29 states have (on average 14.310344827586206) internal successors, (415), 29 states have internal predecessors, (415), 14 states have call successors, (80), 6 states have call predecessors, (80), 10 states have return successors, (79), 16 states have call predecessors, (79), 14 states have call successors, (79) Word has length 270 [2023-12-21 11:34:38,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:34:39,102 INFO L225 Difference]: With dead ends: 75117 [2023-12-21 11:34:39,102 INFO L226 Difference]: Without dead ends: 42906 [2023-12-21 11:34:39,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 796 GetRequests, 623 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10634 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2907, Invalid=27543, Unknown=0, NotChecked=0, Total=30450 [2023-12-21 11:34:39,146 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 2072 mSDsluCounter, 6765 mSDsCounter, 0 mSdLazyCounter, 4042 mSolverCounterSat, 574 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2075 SdHoareTripleChecker+Valid, 7266 SdHoareTripleChecker+Invalid, 4616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 574 IncrementalHoareTripleChecker+Valid, 4042 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-21 11:34:39,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2075 Valid, 7266 Invalid, 4616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [574 Valid, 4042 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-21 11:34:39,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42906 states. [2023-12-21 11:34:50,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42906 to 35025. [2023-12-21 11:34:50,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35025 states, 26289 states have (on average 1.2030507056183195) internal successors, (31627), 26577 states have internal predecessors, (31627), 5212 states have call successors, (5212), 3483 states have call predecessors, (5212), 3523 states have return successors, (5243), 4964 states have call predecessors, (5243), 5202 states have call successors, (5243) [2023-12-21 11:34:50,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35025 states to 35025 states and 42082 transitions. [2023-12-21 11:34:50,247 INFO L78 Accepts]: Start accepts. Automaton has 35025 states and 42082 transitions. Word has length 270 [2023-12-21 11:34:50,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:34:50,247 INFO L495 AbstractCegarLoop]: Abstraction has 35025 states and 42082 transitions. [2023-12-21 11:34:50,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 29 states have (on average 14.310344827586206) internal successors, (415), 29 states have internal predecessors, (415), 14 states have call successors, (80), 6 states have call predecessors, (80), 10 states have return successors, (79), 16 states have call predecessors, (79), 14 states have call successors, (79) [2023-12-21 11:34:50,248 INFO L276 IsEmpty]: Start isEmpty. Operand 35025 states and 42082 transitions. [2023-12-21 11:34:50,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2023-12-21 11:34:50,266 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:34:50,266 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:34:50,273 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-12-21 11:34:50,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:34:50,472 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:34:50,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:34:50,473 INFO L85 PathProgramCache]: Analyzing trace with hash -270129154, now seen corresponding path program 1 times [2023-12-21 11:34:50,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:34:50,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336658375] [2023-12-21 11:34:50,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:34:50,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:34:50,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:51,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:34:51,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:51,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-21 11:34:51,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:51,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-21 11:34:51,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:51,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-21 11:34:51,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:51,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 11:34:51,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:51,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-21 11:34:51,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:51,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 11:34:51,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:51,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 11:34:51,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:51,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 11:34:51,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:51,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 11:34:51,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:51,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 11:34:51,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:51,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 11:34:51,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:51,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-21 11:34:51,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:51,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-12-21 11:34:51,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:51,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-12-21 11:34:51,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:51,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-12-21 11:34:51,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:51,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-12-21 11:34:51,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:51,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2023-12-21 11:34:51,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:51,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2023-12-21 11:34:51,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:51,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2023-12-21 11:34:51,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:51,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2023-12-21 11:34:51,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:51,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2023-12-21 11:34:51,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:51,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2023-12-21 11:34:51,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:51,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2023-12-21 11:34:51,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:51,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2023-12-21 11:34:51,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:51,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2023-12-21 11:34:51,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:51,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2023-12-21 11:34:51,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:51,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2023-12-21 11:34:51,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:51,441 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 50 proven. 40 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2023-12-21 11:34:51,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:34:51,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336658375] [2023-12-21 11:34:51,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336658375] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:34:51,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350241454] [2023-12-21 11:34:51,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:34:51,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:34:51,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:34:51,458 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:34:51,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-12-21 11:34:51,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:51,667 INFO L262 TraceCheckSpWp]: Trace formula consists of 1044 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-21 11:34:51,671 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:34:52,268 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 168 proven. 152 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-12-21 11:34:52,268 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:34:54,371 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 38 proven. 52 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2023-12-21 11:34:54,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [350241454] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:34:54,372 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:34:54,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 34 [2023-12-21 11:34:54,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710066272] [2023-12-21 11:34:54,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:34:54,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-21 11:34:54,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:34:54,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-21 11:34:54,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1004, Unknown=0, NotChecked=0, Total=1122 [2023-12-21 11:34:54,373 INFO L87 Difference]: Start difference. First operand 35025 states and 42082 transitions. Second operand has 34 states, 34 states have (on average 11.294117647058824) internal successors, (384), 34 states have internal predecessors, (384), 15 states have call successors, (79), 7 states have call predecessors, (79), 8 states have return successors, (78), 15 states have call predecessors, (78), 15 states have call successors, (78) [2023-12-21 11:35:17,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:35:17,646 INFO L93 Difference]: Finished difference Result 81520 states and 98272 transitions. [2023-12-21 11:35:17,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2023-12-21 11:35:17,647 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 11.294117647058824) internal successors, (384), 34 states have internal predecessors, (384), 15 states have call successors, (79), 7 states have call predecessors, (79), 8 states have return successors, (78), 15 states have call predecessors, (78), 15 states have call successors, (78) Word has length 271 [2023-12-21 11:35:17,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:35:17,777 INFO L225 Difference]: With dead ends: 81520 [2023-12-21 11:35:17,778 INFO L226 Difference]: Without dead ends: 48339 [2023-12-21 11:35:17,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 742 GetRequests, 601 SyntacticMatches, 1 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6536 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=2588, Invalid=17434, Unknown=0, NotChecked=0, Total=20022 [2023-12-21 11:35:17,820 INFO L413 NwaCegarLoop]: 559 mSDtfsCounter, 4346 mSDsluCounter, 6620 mSDsCounter, 0 mSdLazyCounter, 5301 mSolverCounterSat, 1390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4346 SdHoareTripleChecker+Valid, 7179 SdHoareTripleChecker+Invalid, 6691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1390 IncrementalHoareTripleChecker+Valid, 5301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-21 11:35:17,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4346 Valid, 7179 Invalid, 6691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1390 Valid, 5301 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-21 11:35:17,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48339 states. [2023-12-21 11:35:30,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48339 to 39436. [2023-12-21 11:35:30,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39436 states, 29729 states have (on average 1.2098960610851357) internal successors, (35969), 30072 states have internal predecessors, (35969), 5749 states have call successors, (5749), 3896 states have call predecessors, (5749), 3957 states have return successors, (5801), 5467 states have call predecessors, (5801), 5739 states have call successors, (5801) [2023-12-21 11:35:30,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39436 states to 39436 states and 47519 transitions. [2023-12-21 11:35:30,692 INFO L78 Accepts]: Start accepts. Automaton has 39436 states and 47519 transitions. Word has length 271 [2023-12-21 11:35:30,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:35:30,692 INFO L495 AbstractCegarLoop]: Abstraction has 39436 states and 47519 transitions. [2023-12-21 11:35:30,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 11.294117647058824) internal successors, (384), 34 states have internal predecessors, (384), 15 states have call successors, (79), 7 states have call predecessors, (79), 8 states have return successors, (78), 15 states have call predecessors, (78), 15 states have call successors, (78) [2023-12-21 11:35:30,692 INFO L276 IsEmpty]: Start isEmpty. Operand 39436 states and 47519 transitions. [2023-12-21 11:35:30,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2023-12-21 11:35:30,711 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:35:30,712 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:35:30,717 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2023-12-21 11:35:30,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2023-12-21 11:35:30,917 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:35:30,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:35:30,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1309603853, now seen corresponding path program 1 times [2023-12-21 11:35:30,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:35:30,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152366139] [2023-12-21 11:35:30,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:35:30,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:35:30,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:31,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:35:31,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:31,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:35:31,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:31,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-21 11:35:31,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:31,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-21 11:35:31,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:31,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 11:35:31,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:31,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 11:35:31,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:31,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 11:35:31,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:31,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 11:35:31,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:31,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 11:35:31,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:31,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 11:35:31,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:31,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 11:35:31,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:31,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-21 11:35:31,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:31,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-21 11:35:31,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:31,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-21 11:35:31,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:31,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-12-21 11:35:31,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:31,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-12-21 11:35:31,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:31,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-12-21 11:35:31,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:31,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2023-12-21 11:35:31,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:31,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2023-12-21 11:35:31,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:31,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2023-12-21 11:35:31,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:31,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-21 11:35:31,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:31,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2023-12-21 11:35:31,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:31,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2023-12-21 11:35:31,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:31,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2023-12-21 11:35:31,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:31,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-12-21 11:35:31,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:31,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2023-12-21 11:35:31,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:31,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2023-12-21 11:35:31,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:31,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2023-12-21 11:35:31,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:31,034 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2023-12-21 11:35:31,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:35:31,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152366139] [2023-12-21 11:35:31,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152366139] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:35:31,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:35:31,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:35:31,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48303159] [2023-12-21 11:35:31,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:35:31,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:35:31,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:35:31,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:35:31,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:35:31,036 INFO L87 Difference]: Start difference. First operand 39436 states and 47519 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-21 11:35:42,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:35:42,365 INFO L93 Difference]: Finished difference Result 72855 states and 87891 transitions. [2023-12-21 11:35:42,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 11:35:42,365 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 272 [2023-12-21 11:35:42,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:35:42,453 INFO L225 Difference]: With dead ends: 72855 [2023-12-21 11:35:42,453 INFO L226 Difference]: Without dead ends: 35307 [2023-12-21 11:35:42,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 11:35:42,491 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 16 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 663 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 [2023-12-21 11:35:42,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 663 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:35:42,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35307 states. [2023-12-21 11:35:54,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35307 to 35227. [2023-12-21 11:35:54,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35227 states, 26505 states have (on average 1.200679117147708) internal successors, (31824), 26780 states have internal predecessors, (31824), 5169 states have call successors, (5169), 3492 states have call predecessors, (5169), 3552 states have return successors, (5220), 4954 states have call predecessors, (5220), 5159 states have call successors, (5220) [2023-12-21 11:35:54,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35227 states to 35227 states and 42213 transitions. [2023-12-21 11:35:54,103 INFO L78 Accepts]: Start accepts. Automaton has 35227 states and 42213 transitions. Word has length 272 [2023-12-21 11:35:54,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:35:54,104 INFO L495 AbstractCegarLoop]: Abstraction has 35227 states and 42213 transitions. [2023-12-21 11:35:54,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-21 11:35:54,104 INFO L276 IsEmpty]: Start isEmpty. Operand 35227 states and 42213 transitions. [2023-12-21 11:35:54,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2023-12-21 11:35:54,124 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:35:54,124 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:35:54,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2023-12-21 11:35:54,124 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:35:54,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:35:54,124 INFO L85 PathProgramCache]: Analyzing trace with hash -136559749, now seen corresponding path program 1 times [2023-12-21 11:35:54,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:35:54,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318145314] [2023-12-21 11:35:54,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:35:54,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:35:54,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:54,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:35:54,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:54,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:35:54,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:54,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-21 11:35:54,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:54,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-21 11:35:54,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:54,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 11:35:54,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:54,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 11:35:54,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:54,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 11:35:54,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:54,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 11:35:54,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:54,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 11:35:54,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:54,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 11:35:54,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:54,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 11:35:54,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:54,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-21 11:35:54,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:54,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-21 11:35:54,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:54,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-21 11:35:54,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:54,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-12-21 11:35:54,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:54,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-12-21 11:35:54,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:54,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-12-21 11:35:54,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:54,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2023-12-21 11:35:54,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:54,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2023-12-21 11:35:54,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:54,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2023-12-21 11:35:54,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:54,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-21 11:35:54,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:54,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-12-21 11:35:54,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:54,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2023-12-21 11:35:54,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:54,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2023-12-21 11:35:54,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:54,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2023-12-21 11:35:54,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:54,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2023-12-21 11:35:54,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:54,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2023-12-21 11:35:54,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:54,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2023-12-21 11:35:54,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:54,566 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 53 proven. 39 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2023-12-21 11:35:54,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:35:54,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318145314] [2023-12-21 11:35:54,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318145314] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:35:54,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953983876] [2023-12-21 11:35:54,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:35:54,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:35:54,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:35:54,568 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:35:54,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-12-21 11:35:54,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:54,768 INFO L262 TraceCheckSpWp]: Trace formula consists of 1047 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-21 11:35:54,772 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:35:55,194 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 177 proven. 138 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-12-21 11:35:55,194 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:35:55,896 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 48 proven. 44 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2023-12-21 11:35:55,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953983876] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:35:55,896 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:35:55,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 10] total 25 [2023-12-21 11:35:55,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173647363] [2023-12-21 11:35:55,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:35:55,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-21 11:35:55,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:35:55,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-21 11:35:55,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=467, Unknown=0, NotChecked=0, Total=600 [2023-12-21 11:35:55,898 INFO L87 Difference]: Start difference. First operand 35227 states and 42213 transitions. Second operand has 25 states, 25 states have (on average 14.96) internal successors, (374), 25 states have internal predecessors, (374), 14 states have call successors, (69), 7 states have call predecessors, (69), 8 states have return successors, (68), 14 states have call predecessors, (68), 14 states have call successors, (68) [2023-12-21 11:36:10,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:36:10,927 INFO L93 Difference]: Finished difference Result 74820 states and 89986 transitions. [2023-12-21 11:36:10,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-12-21 11:36:10,927 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 14.96) internal successors, (374), 25 states have internal predecessors, (374), 14 states have call successors, (69), 7 states have call predecessors, (69), 8 states have return successors, (68), 14 states have call predecessors, (68), 14 states have call successors, (68) Word has length 273 [2023-12-21 11:36:10,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:36:11,023 INFO L225 Difference]: With dead ends: 74820 [2023-12-21 11:36:11,023 INFO L226 Difference]: Without dead ends: 41484 [2023-12-21 11:36:11,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 662 GetRequests, 593 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1276 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=895, Invalid=3935, Unknown=0, NotChecked=0, Total=4830 [2023-12-21 11:36:11,060 INFO L413 NwaCegarLoop]: 505 mSDtfsCounter, 1206 mSDsluCounter, 3514 mSDsCounter, 0 mSdLazyCounter, 2777 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1207 SdHoareTripleChecker+Valid, 4019 SdHoareTripleChecker+Invalid, 3075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 2777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-21 11:36:11,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1207 Valid, 4019 Invalid, 3075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 2777 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-21 11:36:11,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41484 states. [2023-12-21 11:36:22,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41484 to 34855. [2023-12-21 11:36:22,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34855 states, 26368 states have (on average 1.2036559466019416) internal successors, (31738), 26635 states have internal predecessors, (31738), 4991 states have call successors, (4991), 3436 states have call predecessors, (4991), 3495 states have return successors, (5041), 4783 states have call predecessors, (5041), 4981 states have call successors, (5041) [2023-12-21 11:36:22,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34855 states to 34855 states and 41770 transitions. [2023-12-21 11:36:22,436 INFO L78 Accepts]: Start accepts. Automaton has 34855 states and 41770 transitions. Word has length 273 [2023-12-21 11:36:22,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:36:22,437 INFO L495 AbstractCegarLoop]: Abstraction has 34855 states and 41770 transitions. [2023-12-21 11:36:22,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 14.96) internal successors, (374), 25 states have internal predecessors, (374), 14 states have call successors, (69), 7 states have call predecessors, (69), 8 states have return successors, (68), 14 states have call predecessors, (68), 14 states have call successors, (68) [2023-12-21 11:36:22,437 INFO L276 IsEmpty]: Start isEmpty. Operand 34855 states and 41770 transitions. [2023-12-21 11:36:22,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2023-12-21 11:36:22,454 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:36:22,454 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:36:22,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2023-12-21 11:36:22,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2023-12-21 11:36:22,668 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:36:22,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:36:22,669 INFO L85 PathProgramCache]: Analyzing trace with hash -717853824, now seen corresponding path program 1 times [2023-12-21 11:36:22,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:36:22,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183321281] [2023-12-21 11:36:22,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:36:22,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:36:22,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:23,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:36:23,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:23,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-21 11:36:23,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:23,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-21 11:36:23,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:23,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-21 11:36:23,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:23,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 11:36:23,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:23,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-21 11:36:23,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:23,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 11:36:23,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:23,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 11:36:23,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:23,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 11:36:23,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:23,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 11:36:23,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:23,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 11:36:23,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:23,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 11:36:23,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:23,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-21 11:36:23,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:23,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-12-21 11:36:23,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:23,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2023-12-21 11:36:23,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:23,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-12-21 11:36:23,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:23,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2023-12-21 11:36:23,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:23,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2023-12-21 11:36:23,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:23,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2023-12-21 11:36:23,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:23,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2023-12-21 11:36:23,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:23,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2023-12-21 11:36:23,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:23,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2023-12-21 11:36:23,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:23,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2023-12-21 11:36:23,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:23,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2023-12-21 11:36:23,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:23,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2023-12-21 11:36:23,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:23,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2023-12-21 11:36:23,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:23,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2023-12-21 11:36:23,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:23,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2023-12-21 11:36:23,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:23,606 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 39 proven. 43 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2023-12-21 11:36:23,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:36:23,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183321281] [2023-12-21 11:36:23,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183321281] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:36:23,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350444146] [2023-12-21 11:36:23,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:36:23,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:36:23,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:36:23,608 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:36:23,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-12-21 11:36:23,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:23,818 INFO L262 TraceCheckSpWp]: Trace formula consists of 1049 conjuncts, 64 conjunts are in the unsatisfiable core [2023-12-21 11:36:23,822 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:36:25,048 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 177 proven. 122 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-12-21 11:36:25,048 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:36:27,111 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 40 proven. 42 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2023-12-21 11:36:27,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350444146] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:36:27,111 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:36:27,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 13] total 37 [2023-12-21 11:36:27,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300252250] [2023-12-21 11:36:27,111 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:36:27,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-12-21 11:36:27,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:36:27,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-12-21 11:36:27,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1183, Unknown=0, NotChecked=0, Total=1332 [2023-12-21 11:36:27,113 INFO L87 Difference]: Start difference. First operand 34855 states and 41770 transitions. Second operand has 37 states, 37 states have (on average 10.54054054054054) internal successors, (390), 37 states have internal predecessors, (390), 17 states have call successors, (79), 7 states have call predecessors, (79), 7 states have return successors, (78), 17 states have call predecessors, (78), 17 states have call successors, (78) [2023-12-21 11:36:46,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:36:46,955 INFO L93 Difference]: Finished difference Result 71189 states and 85472 transitions. [2023-12-21 11:36:46,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2023-12-21 11:36:46,955 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 10.54054054054054) internal successors, (390), 37 states have internal predecessors, (390), 17 states have call successors, (79), 7 states have call predecessors, (79), 7 states have return successors, (78), 17 states have call predecessors, (78), 17 states have call successors, (78) Word has length 273 [2023-12-21 11:36:46,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:36:47,034 INFO L225 Difference]: With dead ends: 71189 [2023-12-21 11:36:47,035 INFO L226 Difference]: Without dead ends: 38149 [2023-12-21 11:36:47,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 713 GetRequests, 605 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3571 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1408, Invalid=10582, Unknown=0, NotChecked=0, Total=11990 [2023-12-21 11:36:47,072 INFO L413 NwaCegarLoop]: 737 mSDtfsCounter, 2060 mSDsluCounter, 9154 mSDsCounter, 0 mSdLazyCounter, 7249 mSolverCounterSat, 665 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2060 SdHoareTripleChecker+Valid, 9891 SdHoareTripleChecker+Invalid, 7914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 665 IncrementalHoareTripleChecker+Valid, 7249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-21 11:36:47,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2060 Valid, 9891 Invalid, 7914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [665 Valid, 7249 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-21 11:36:47,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38149 states. [2023-12-21 11:36:58,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38149 to 35191. [2023-12-21 11:36:58,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35191 states, 26638 states have (on average 1.2055334484570914) internal successors, (32113), 26908 states have internal predecessors, (32113), 5033 states have call successors, (5033), 3460 states have call predecessors, (5033), 3519 states have return successors, (5083), 4822 states have call predecessors, (5083), 5023 states have call successors, (5083) [2023-12-21 11:36:58,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35191 states to 35191 states and 42229 transitions. [2023-12-21 11:36:58,774 INFO L78 Accepts]: Start accepts. Automaton has 35191 states and 42229 transitions. Word has length 273 [2023-12-21 11:36:58,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:36:58,774 INFO L495 AbstractCegarLoop]: Abstraction has 35191 states and 42229 transitions. [2023-12-21 11:36:58,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 10.54054054054054) internal successors, (390), 37 states have internal predecessors, (390), 17 states have call successors, (79), 7 states have call predecessors, (79), 7 states have return successors, (78), 17 states have call predecessors, (78), 17 states have call successors, (78) [2023-12-21 11:36:58,775 INFO L276 IsEmpty]: Start isEmpty. Operand 35191 states and 42229 transitions. [2023-12-21 11:36:58,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2023-12-21 11:36:58,789 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:36:58,789 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:36:58,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2023-12-21 11:36:58,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2023-12-21 11:36:58,995 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:36:58,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:36:58,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1931324719, now seen corresponding path program 1 times [2023-12-21 11:36:58,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:36:58,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066667365] [2023-12-21 11:36:58,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:36:58,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:36:59,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:59,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:36:59,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:59,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:36:59,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:59,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-21 11:36:59,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:59,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-21 11:36:59,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:59,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 11:36:59,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:59,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 11:36:59,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:59,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 11:36:59,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:59,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 11:36:59,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:59,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 11:36:59,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:59,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 11:36:59,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:59,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 11:36:59,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:59,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-21 11:36:59,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:59,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-21 11:36:59,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:59,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-21 11:36:59,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:59,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-12-21 11:36:59,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:59,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-12-21 11:36:59,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:59,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-12-21 11:36:59,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:59,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2023-12-21 11:36:59,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:59,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2023-12-21 11:36:59,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:59,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2023-12-21 11:36:59,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:59,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-21 11:36:59,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:59,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2023-12-21 11:36:59,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:59,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2023-12-21 11:36:59,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:59,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2023-12-21 11:36:59,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:59,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2023-12-21 11:36:59,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:59,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2023-12-21 11:36:59,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:59,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2023-12-21 11:36:59,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:59,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2023-12-21 11:36:59,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:59,345 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 35 proven. 59 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2023-12-21 11:36:59,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:36:59,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066667365] [2023-12-21 11:36:59,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066667365] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:36:59,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9543639] [2023-12-21 11:36:59,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:36:59,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:36:59,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:36:59,347 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:36:59,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-12-21 11:36:59,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:59,544 INFO L262 TraceCheckSpWp]: Trace formula consists of 1048 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-21 11:36:59,547 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:37:00,245 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 192 proven. 125 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-12-21 11:37:00,245 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:37:01,247 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 68 proven. 26 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2023-12-21 11:37:01,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [9543639] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:37:01,247 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:37:01,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 10] total 30 [2023-12-21 11:37:01,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456897756] [2023-12-21 11:37:01,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:37:01,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-21 11:37:01,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:37:01,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-21 11:37:01,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=761, Unknown=0, NotChecked=0, Total=870 [2023-12-21 11:37:01,249 INFO L87 Difference]: Start difference. First operand 35191 states and 42229 transitions. Second operand has 30 states, 30 states have (on average 13.4) internal successors, (402), 30 states have internal predecessors, (402), 14 states have call successors, (83), 7 states have call predecessors, (83), 7 states have return successors, (82), 14 states have call predecessors, (82), 14 states have call successors, (82) [2023-12-21 11:37:14,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:37:14,933 INFO L93 Difference]: Finished difference Result 61243 states and 73784 transitions. [2023-12-21 11:37:14,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2023-12-21 11:37:14,933 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 13.4) internal successors, (402), 30 states have internal predecessors, (402), 14 states have call successors, (83), 7 states have call predecessors, (83), 7 states have return successors, (82), 14 states have call predecessors, (82), 14 states have call successors, (82) Word has length 275 [2023-12-21 11:37:14,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:37:14,992 INFO L225 Difference]: With dead ends: 61243 [2023-12-21 11:37:14,992 INFO L226 Difference]: Without dead ends: 27918 [2023-12-21 11:37:15,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 771 GetRequests, 626 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7060 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=3413, Invalid=18049, Unknown=0, NotChecked=0, Total=21462 [2023-12-21 11:37:15,029 INFO L413 NwaCegarLoop]: 573 mSDtfsCounter, 3386 mSDsluCounter, 6232 mSDsCounter, 0 mSdLazyCounter, 3892 mSolverCounterSat, 1376 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3386 SdHoareTripleChecker+Valid, 6805 SdHoareTripleChecker+Invalid, 5268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1376 IncrementalHoareTripleChecker+Valid, 3892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-21 11:37:15,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3386 Valid, 6805 Invalid, 5268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1376 Valid, 3892 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-21 11:37:15,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27918 states. [2023-12-21 11:37:24,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27918 to 25952. [2023-12-21 11:37:24,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25952 states, 19641 states have (on average 1.1996334198869711) internal successors, (23562), 19827 states have internal predecessors, (23562), 3755 states have call successors, (3755), 2529 states have call predecessors, (3755), 2555 states have return successors, (3773), 3595 states have call predecessors, (3773), 3746 states have call successors, (3773) [2023-12-21 11:37:24,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25952 states to 25952 states and 31090 transitions. [2023-12-21 11:37:24,103 INFO L78 Accepts]: Start accepts. Automaton has 25952 states and 31090 transitions. Word has length 275 [2023-12-21 11:37:24,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:37:24,104 INFO L495 AbstractCegarLoop]: Abstraction has 25952 states and 31090 transitions. [2023-12-21 11:37:24,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 13.4) internal successors, (402), 30 states have internal predecessors, (402), 14 states have call successors, (83), 7 states have call predecessors, (83), 7 states have return successors, (82), 14 states have call predecessors, (82), 14 states have call successors, (82) [2023-12-21 11:37:24,104 INFO L276 IsEmpty]: Start isEmpty. Operand 25952 states and 31090 transitions. [2023-12-21 11:37:24,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2023-12-21 11:37:24,116 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:37:24,116 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:37:24,125 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2023-12-21 11:37:24,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:37:24,323 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:37:24,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:37:24,323 INFO L85 PathProgramCache]: Analyzing trace with hash -5314542, now seen corresponding path program 1 times [2023-12-21 11:37:24,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:37:24,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566338286] [2023-12-21 11:37:24,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:37:24,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:37:24,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:37:24,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:37:24,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:37:24,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-21 11:37:24,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:37:24,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-21 11:37:24,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:37:24,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-21 11:37:24,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:37:24,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 11:37:24,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:37:24,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-21 11:37:24,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:37:24,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 11:37:24,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:37:24,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 11:37:24,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:37:24,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 11:37:24,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:37:24,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 11:37:24,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:37:24,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 11:37:24,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:37:24,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 11:37:24,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:37:24,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-21 11:37:24,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:37:24,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-21 11:37:24,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:37:24,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-12-21 11:37:24,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:37:24,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-12-21 11:37:24,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:37:24,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-12-21 11:37:24,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:37:24,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2023-12-21 11:37:24,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:37:24,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2023-12-21 11:37:24,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:37:24,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2023-12-21 11:37:24,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:37:24,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2023-12-21 11:37:24,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:37:24,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2023-12-21 11:37:24,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:37:24,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2023-12-21 11:37:24,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:37:24,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2023-12-21 11:37:24,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:37:24,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2023-12-21 11:37:24,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:37:24,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2023-12-21 11:37:24,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:37:24,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2023-12-21 11:37:24,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:37:24,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2023-12-21 11:37:24,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:37:24,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2023-12-21 11:37:24,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:37:24,905 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 40 proven. 39 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2023-12-21 11:37:24,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:37:24,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566338286] [2023-12-21 11:37:24,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566338286] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:37:24,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428640228] [2023-12-21 11:37:24,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:37:24,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:37:24,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:37:24,906 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:37:24,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-12-21 11:37:25,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:37:25,114 INFO L262 TraceCheckSpWp]: Trace formula consists of 1061 conjuncts, 64 conjunts are in the unsatisfiable core [2023-12-21 11:37:25,118 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:37:26,110 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 168 proven. 128 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-12-21 11:37:26,111 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:37:27,499 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 49 proven. 30 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2023-12-21 11:37:27,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428640228] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:37:27,499 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:37:27,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 14] total 35 [2023-12-21 11:37:27,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520402052] [2023-12-21 11:37:27,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:37:27,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-21 11:37:27,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:37:27,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-21 11:37:27,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=1013, Unknown=0, NotChecked=0, Total=1190 [2023-12-21 11:37:27,501 INFO L87 Difference]: Start difference. First operand 25952 states and 31090 transitions. Second operand has 35 states, 32 states have (on average 11.90625) internal successors, (381), 32 states have internal predecessors, (381), 15 states have call successors, (82), 6 states have call predecessors, (82), 10 states have return successors, (81), 16 states have call predecessors, (81), 15 states have call successors, (81) Received shutdown request... [2023-12-21 11:37:29,474 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 [2023-12-21 11:37:29,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-21 11:37:29,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 643 GetRequests, 590 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 693 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=483, Invalid=2379, Unknown=0, NotChecked=0, Total=2862 [2023-12-21 11:37:29,477 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 403 mSDsluCounter, 1399 mSDsCounter, 0 mSdLazyCounter, 671 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 1522 SdHoareTripleChecker+Invalid, 768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 11:37:29,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [403 Valid, 1522 Invalid, 768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 671 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 11:37:29,478 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 11:37:29,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2023-12-21 11:37:29,522 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 11:37:29,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:37:29,685 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (25952states) and FLOYD_HOARE automaton (currently 23 states, 35 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-9-6-2-2-2-2-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying a ∨-2-2-2-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-5-2-2-2-2-2-1 context. [2023-12-21 11:37:29,688 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:37:29,690 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 11:37:29,691 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 11:37:29 BoogieIcfgContainer [2023-12-21 11:37:29,691 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 11:37:29,691 INFO L158 Benchmark]: Toolchain (without parser) took 811534.49ms. Allocated memory was 318.8MB in the beginning and 6.8GB in the end (delta: 6.4GB). Free memory was 265.6MB in the beginning and 3.1GB in the end (delta: -2.8GB). Peak memory consumption was 3.6GB. Max. memory is 8.0GB. [2023-12-21 11:37:29,691 INFO L158 Benchmark]: CDTParser took 0.42ms. Allocated memory is still 239.1MB. Free memory is still 189.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 11:37:29,691 INFO L158 Benchmark]: CACSL2BoogieTranslator took 275.93ms. Allocated memory is still 318.8MB. Free memory was 265.3MB in the beginning and 247.2MB in the end (delta: 18.1MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-12-21 11:37:29,691 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.74ms. Allocated memory is still 318.8MB. Free memory was 247.2MB in the beginning and 243.6MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-21 11:37:29,692 INFO L158 Benchmark]: Boogie Preprocessor took 106.29ms. Allocated memory is still 318.8MB. Free memory was 243.6MB in the beginning and 239.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-21 11:37:29,692 INFO L158 Benchmark]: RCFGBuilder took 652.74ms. Allocated memory is still 318.8MB. Free memory was 239.1MB in the beginning and 267.4MB in the end (delta: -28.3MB). Peak memory consumption was 29.4MB. Max. memory is 8.0GB. [2023-12-21 11:37:29,692 INFO L158 Benchmark]: TraceAbstraction took 810432.80ms. Allocated memory was 318.8MB in the beginning and 6.8GB in the end (delta: 6.4GB). Free memory was 266.9MB in the beginning and 3.1GB in the end (delta: -2.8GB). Peak memory consumption was 3.6GB. Max. memory is 8.0GB. [2023-12-21 11:37:29,692 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42ms. Allocated memory is still 239.1MB. Free memory is still 189.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 275.93ms. Allocated memory is still 318.8MB. Free memory was 265.3MB in the beginning and 247.2MB in the end (delta: 18.1MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 61.74ms. Allocated memory is still 318.8MB. Free memory was 247.2MB in the beginning and 243.6MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 106.29ms. Allocated memory is still 318.8MB. Free memory was 243.6MB in the beginning and 239.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 652.74ms. Allocated memory is still 318.8MB. Free memory was 239.1MB in the beginning and 267.4MB in the end (delta: -28.3MB). Peak memory consumption was 29.4MB. Max. memory is 8.0GB. * TraceAbstraction took 810432.80ms. Allocated memory was 318.8MB in the beginning and 6.8GB in the end (delta: 6.4GB). Free memory was 266.9MB in the beginning and 3.1GB in the end (delta: -2.8GB). Peak memory consumption was 3.6GB. 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: 618]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 618). Cancelled while NwaCegarLoop was constructing difference of abstraction (25952states) and FLOYD_HOARE automaton (currently 23 states, 35 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-9-6-2-2-2-2-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying a ∨-2-2-2-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-5-2-2-2-2-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 170 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 810.4s, OverallIterations: 71, TraceHistogramMax: 8, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.6s, AutomataDifference: 434.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 76037 SdHoareTripleChecker+Valid, 48.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 75871 mSDsluCounter, 205421 SdHoareTripleChecker+Invalid, 40.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 177685 mSDsCounter, 24358 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 89179 IncrementalHoareTripleChecker+Invalid, 113537 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24358 mSolverCounterUnsat, 27736 mSDtfsCounter, 89179 mSolverCounterSat, 0.9s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 20699 GetRequests, 17875 SyntacticMatches, 45 SemanticMatches, 2778 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83574 ImplicationChecksByTransitivity, 47.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51885occurred in iteration=48, InterpolantAutomatonStates: 2199, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 309.4s AutomataMinimizationTime, 70 MinimizatonAttempts, 162761 StatesRemovedByMinimization, 61 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.8s SsaConstructionTime, 4.4s SatisfiabilityAnalysisTime, 49.0s InterpolantComputationTime, 19051 NumberOfCodeBlocks, 19051 NumberOfCodeBlocksAsserted, 108 NumberOfCheckSat, 26601 ConstructedInterpolants, 0 QuantifiedInterpolants, 132583 SizeOfPredicates, 163 NumberOfNonLiveVariables, 31178 ConjunctsInSsa, 915 ConjunctsInUnsatCore, 144 InterpolantComputations, 36 PerfectInterpolantSequences, 21785/25651 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