/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.BOUNDED-10.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 11:23:44,581 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 11:23:44,642 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 11:23:44,646 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 11:23:44,647 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 11:23:44,667 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 11:23:44,667 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 11:23:44,668 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 11:23:44,668 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 11:23:44,669 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 11:23:44,669 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 11:23:44,669 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 11:23:44,670 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 11:23:44,670 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 11:23:44,671 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 11:23:44,671 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 11:23:44,671 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 11:23:44,672 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 11:23:44,672 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 11:23:44,672 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 11:23:44,673 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 11:23:44,677 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 11:23:44,677 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 11:23:44,678 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 11:23:44,681 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 11:23:44,681 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 11:23:44,681 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 11:23:44,682 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 11:23:44,683 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 11:23:44,683 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 11:23:44,684 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 11:23:44,684 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 11:23:44,684 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 11:23:44,684 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 11:23:44,685 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 11:23:44,685 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 11:23:44,685 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 11:23:44,685 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 11:23:44,685 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 11:23:44,685 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 11:23:44,686 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 11:23:44,686 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 11:23:44,686 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 11:23:44,686 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 11:23:44,869 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 11:23:44,888 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 11:23:44,891 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 11:23:44,892 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 11:23:44,892 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 11:23:44,893 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.BOUNDED-10.pals.c [2023-12-21 11:23:46,046 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 11:23:46,224 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 11:23:46,225 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.BOUNDED-10.pals.c [2023-12-21 11:23:46,235 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0348fd15d/8645ebbaf68a4c249dd40c3ba7ca1494/FLAG260bb3fd0 [2023-12-21 11:23:46,247 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0348fd15d/8645ebbaf68a4c249dd40c3ba7ca1494 [2023-12-21 11:23:46,250 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 11:23:46,251 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 11:23:46,252 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 11:23:46,252 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 11:23:46,256 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 11:23:46,257 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:23:46" (1/1) ... [2023-12-21 11:23:46,258 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3df332e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:23:46, skipping insertion in model container [2023-12-21 11:23:46,258 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:23:46" (1/1) ... [2023-12-21 11:23:46,290 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 11:23:46,495 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.BOUNDED-10.pals.c[14698,14711] [2023-12-21 11:23:46,503 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 11:23:46,513 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 11:23:46,582 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.BOUNDED-10.pals.c[14698,14711] [2023-12-21 11:23:46,582 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 11:23:46,596 INFO L206 MainTranslator]: Completed translation [2023-12-21 11:23:46,597 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:23:46 WrapperNode [2023-12-21 11:23:46,597 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 11:23:46,598 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 11:23:46,598 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 11:23:46,598 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 11:23:46,607 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:23:46" (1/1) ... [2023-12-21 11:23:46,626 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:23:46" (1/1) ... [2023-12-21 11:23:46,667 INFO L138 Inliner]: procedures = 32, calls = 48, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 500 [2023-12-21 11:23:46,668 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 11:23:46,669 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 11:23:46,669 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 11:23:46,669 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 11:23:46,678 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:23:46" (1/1) ... [2023-12-21 11:23:46,678 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:23:46" (1/1) ... [2023-12-21 11:23:46,684 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:23:46" (1/1) ... [2023-12-21 11:23:46,701 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 11:23:46,702 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:23:46" (1/1) ... [2023-12-21 11:23:46,702 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:23:46" (1/1) ... [2023-12-21 11:23:46,713 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:23:46" (1/1) ... [2023-12-21 11:23:46,718 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:23:46" (1/1) ... [2023-12-21 11:23:46,733 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:23:46" (1/1) ... [2023-12-21 11:23:46,735 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:23:46" (1/1) ... [2023-12-21 11:23:46,740 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 11:23:46,741 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 11:23:46,741 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 11:23:46,741 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 11:23:46,742 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:23:46" (1/1) ... [2023-12-21 11:23:46,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 11:23:46,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:23:46,767 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 11:23:46,794 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 11:23:46,805 INFO L130 BoogieDeclarations]: Found specification of procedure read_manual_selection_history [2023-12-21 11:23:46,805 INFO L138 BoogieDeclarations]: Found implementation of procedure read_manual_selection_history [2023-12-21 11:23:46,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 11:23:46,806 INFO L130 BoogieDeclarations]: Found specification of procedure read_side2_failed_history [2023-12-21 11:23:46,806 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side2_failed_history [2023-12-21 11:23:46,806 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-12-21 11:23:46,808 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-12-21 11:23:46,808 INFO L130 BoogieDeclarations]: Found specification of procedure flip_the_side [2023-12-21 11:23:46,809 INFO L138 BoogieDeclarations]: Found implementation of procedure flip_the_side [2023-12-21 11:23:46,809 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-21 11:23:46,809 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-21 11:23:46,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 11:23:46,809 INFO L130 BoogieDeclarations]: Found specification of procedure read_side1_failed_history [2023-12-21 11:23:46,809 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side1_failed_history [2023-12-21 11:23:46,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 11:23:46,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 11:23:46,809 INFO L130 BoogieDeclarations]: Found specification of procedure read_active_side_history [2023-12-21 11:23:46,809 INFO L138 BoogieDeclarations]: Found implementation of procedure read_active_side_history [2023-12-21 11:23:46,934 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 11:23:46,937 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 11:23:47,410 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 11:23:47,475 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 11:23:47,475 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-21 11:23:47,476 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:23:47 BoogieIcfgContainer [2023-12-21 11:23:47,476 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 11:23:47,480 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 11:23:47,480 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 11:23:47,484 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 11:23:47,485 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 11:23:46" (1/3) ... [2023-12-21 11:23:47,486 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@601cb48f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:23:47, skipping insertion in model container [2023-12-21 11:23:47,486 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:23:46" (2/3) ... [2023-12-21 11:23:47,486 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@601cb48f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:23:47, skipping insertion in model container [2023-12-21 11:23:47,486 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:23:47" (3/3) ... [2023-12-21 11:23:47,488 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.ufo.BOUNDED-10.pals.c [2023-12-21 11:23:47,504 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 11:23:47,504 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 11:23:47,573 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 11:23:47,579 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;@28554aa2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 11:23:47,580 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 11:23:47,585 INFO L276 IsEmpty]: Start isEmpty. Operand has 171 states, 131 states have (on average 1.5954198473282444) internal successors, (209), 132 states have internal predecessors, (209), 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 11:23:47,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-21 11:23:47,592 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:23:47,592 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 11:23:47,593 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:23:47,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:23:47,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1288314428, now seen corresponding path program 1 times [2023-12-21 11:23:47,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:23:47,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172511248] [2023-12-21 11:23:47,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:23:47,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:23:47,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:47,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 11:23:47,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:47,818 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 11:23:47,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:23:47,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172511248] [2023-12-21 11:23:47,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172511248] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:23:47,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:23:47,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 11:23:47,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170843610] [2023-12-21 11:23:47,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:23:47,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 11:23:47,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:23:47,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 11:23:47,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 11:23:47,863 INFO L87 Difference]: Start difference. First operand has 171 states, 131 states have (on average 1.5954198473282444) internal successors, (209), 132 states have internal predecessors, (209), 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 11:23:47,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:23:47,966 INFO L93 Difference]: Finished difference Result 327 states and 543 transitions. [2023-12-21 11:23:47,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 11:23:47,969 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 11:23:47,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:23:47,981 INFO L225 Difference]: With dead ends: 327 [2023-12-21 11:23:47,982 INFO L226 Difference]: Without dead ends: 169 [2023-12-21 11:23:47,991 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 11:23:47,995 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:23:47,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 262 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:23:48,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2023-12-21 11:23:48,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2023-12-21 11:23:48,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 130 states have (on average 1.5692307692307692) internal successors, (204), 130 states have internal predecessors, (204), 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 11:23:48,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 266 transitions. [2023-12-21 11:23:48,087 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 266 transitions. Word has length 23 [2023-12-21 11:23:48,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:23:48,088 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 266 transitions. [2023-12-21 11:23:48,088 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 11:23:48,088 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 266 transitions. [2023-12-21 11:23:48,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-21 11:23:48,091 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:23:48,091 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 11:23:48,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 11:23:48,092 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:23:48,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:23:48,093 INFO L85 PathProgramCache]: Analyzing trace with hash -705830278, now seen corresponding path program 1 times [2023-12-21 11:23:48,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:23:48,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317872659] [2023-12-21 11:23:48,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:23:48,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:23:48,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:48,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 11:23:48,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:48,328 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 11:23:48,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:23:48,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317872659] [2023-12-21 11:23:48,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317872659] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:23:48,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:23:48,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 11:23:48,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703271488] [2023-12-21 11:23:48,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:23:48,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 11:23:48,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:23:48,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 11:23:48,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 11:23:48,332 INFO L87 Difference]: Start difference. First operand 169 states and 266 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 11:23:48,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:23:48,502 INFO L93 Difference]: Finished difference Result 432 states and 688 transitions. [2023-12-21 11:23:48,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 11:23:48,503 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 11:23:48,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:23:48,508 INFO L225 Difference]: With dead ends: 432 [2023-12-21 11:23:48,508 INFO L226 Difference]: Without dead ends: 276 [2023-12-21 11:23:48,509 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 11:23:48,511 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 131 mSDsluCounter, 1002 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 1258 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:23:48,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 1258 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:23:48,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2023-12-21 11:23:48,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 169. [2023-12-21 11:23:48,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 130 states have (on average 1.476923076923077) internal successors, (192), 130 states have internal predecessors, (192), 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 11:23:48,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 254 transitions. [2023-12-21 11:23:48,539 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 254 transitions. Word has length 23 [2023-12-21 11:23:48,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:23:48,540 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 254 transitions. [2023-12-21 11:23:48,542 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 11:23:48,542 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 254 transitions. [2023-12-21 11:23:48,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-21 11:23:48,544 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:23:48,544 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 11:23:48,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 11:23:48,545 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:23:48,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:23:48,547 INFO L85 PathProgramCache]: Analyzing trace with hash 120145863, now seen corresponding path program 1 times [2023-12-21 11:23:48,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:23:48,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244957290] [2023-12-21 11:23:48,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:23:48,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:23:48,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:48,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:23:48,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:48,794 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 11:23:48,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:23:48,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244957290] [2023-12-21 11:23:48,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244957290] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:23:48,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:23:48,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:23:48,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461655049] [2023-12-21 11:23:48,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:23:48,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:23:48,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:23:48,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:23:48,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:23:48,809 INFO L87 Difference]: Start difference. First operand 169 states and 254 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 11:23:48,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:23:48,885 INFO L93 Difference]: Finished difference Result 326 states and 499 transitions. [2023-12-21 11:23:48,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 11:23:48,886 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 11:23:48,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:23:48,891 INFO L225 Difference]: With dead ends: 326 [2023-12-21 11:23:48,891 INFO L226 Difference]: Without dead ends: 173 [2023-12-21 11:23:48,892 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 11:23:48,895 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 5 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 719 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 11:23:48,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 719 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:23:48,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2023-12-21 11:23:48,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2023-12-21 11:23:48,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 133 states have (on average 1.4661654135338347) internal successors, (195), 133 states have internal predecessors, (195), 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 11:23:48,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 257 transitions. [2023-12-21 11:23:48,915 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 257 transitions. Word has length 34 [2023-12-21 11:23:48,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:23:48,915 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 257 transitions. [2023-12-21 11:23:48,915 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 11:23:48,915 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 257 transitions. [2023-12-21 11:23:48,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-12-21 11:23:48,917 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:23:48,917 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 11:23:48,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 11:23:48,917 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:23:48,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:23:48,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1571991065, now seen corresponding path program 1 times [2023-12-21 11:23:48,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:23:48,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282555234] [2023-12-21 11:23:48,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:23:48,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:23:48,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:49,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:23:49,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:49,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 11:23:49,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:49,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-21 11:23:49,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:49,042 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 11:23:49,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:23:49,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282555234] [2023-12-21 11:23:49,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282555234] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:23:49,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:23:49,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:23:49,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659230655] [2023-12-21 11:23:49,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:23:49,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:23:49,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:23:49,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:23:49,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:23:49,045 INFO L87 Difference]: Start difference. First operand 173 states and 257 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 11:23:49,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:23:49,109 INFO L93 Difference]: Finished difference Result 476 states and 717 transitions. [2023-12-21 11:23:49,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:23:49,109 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 11:23:49,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:23:49,114 INFO L225 Difference]: With dead ends: 476 [2023-12-21 11:23:49,114 INFO L226 Difference]: Without dead ends: 319 [2023-12-21 11:23:49,116 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 11:23:49,123 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 210 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 497 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 11:23:49,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 497 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:23:49,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2023-12-21 11:23:49,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 315. [2023-12-21 11:23:49,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 238 states have (on average 1.4831932773109244) internal successors, (353), 239 states have internal predecessors, (353), 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 11:23:49,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 473 transitions. [2023-12-21 11:23:49,163 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 473 transitions. Word has length 48 [2023-12-21 11:23:49,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:23:49,164 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 473 transitions. [2023-12-21 11:23:49,164 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 11:23:49,164 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 473 transitions. [2023-12-21 11:23:49,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-21 11:23:49,171 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:23:49,172 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 11:23:49,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 11:23:49,172 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:23:49,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:23:49,173 INFO L85 PathProgramCache]: Analyzing trace with hash 403632391, now seen corresponding path program 1 times [2023-12-21 11:23:49,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:23:49,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158226993] [2023-12-21 11:23:49,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:23:49,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:23:49,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:49,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:23:49,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:49,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 11:23:49,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:49,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-21 11:23:49,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:49,262 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 11:23:49,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:23:49,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158226993] [2023-12-21 11:23:49,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158226993] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:23:49,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:23:49,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:23:49,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592944734] [2023-12-21 11:23:49,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:23:49,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:23:49,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:23:49,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:23:49,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:23:49,265 INFO L87 Difference]: Start difference. First operand 315 states and 473 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 11:23:49,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:23:49,336 INFO L93 Difference]: Finished difference Result 889 states and 1345 transitions. [2023-12-21 11:23:49,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:23:49,337 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 11:23:49,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:23:49,343 INFO L225 Difference]: With dead ends: 889 [2023-12-21 11:23:49,344 INFO L226 Difference]: Without dead ends: 590 [2023-12-21 11:23:49,345 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 11:23:49,345 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 211 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 517 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 11:23:49,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 517 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:23:49,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2023-12-21 11:23:49,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 584. [2023-12-21 11:23:49,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 435 states have (on average 1.4919540229885058) internal successors, (649), 438 states have internal predecessors, (649), 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 11:23:49,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 883 transitions. [2023-12-21 11:23:49,401 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 883 transitions. Word has length 49 [2023-12-21 11:23:49,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:23:49,403 INFO L495 AbstractCegarLoop]: Abstraction has 584 states and 883 transitions. [2023-12-21 11:23:49,403 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 11:23:49,403 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 883 transitions. [2023-12-21 11:23:49,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-21 11:23:49,405 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:23:49,406 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 11:23:49,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-21 11:23:49,409 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:23:49,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:23:49,411 INFO L85 PathProgramCache]: Analyzing trace with hash -876231287, now seen corresponding path program 1 times [2023-12-21 11:23:49,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:23:49,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161142823] [2023-12-21 11:23:49,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:23:49,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:23:49,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:49,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:23:49,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:49,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 11:23:49,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:49,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-21 11:23:49,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:49,523 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 11:23:49,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:23:49,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161142823] [2023-12-21 11:23:49,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161142823] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:23:49,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:23:49,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 11:23:49,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959631898] [2023-12-21 11:23:49,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:23:49,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 11:23:49,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:23:49,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 11:23:49,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 11:23:49,525 INFO L87 Difference]: Start difference. First operand 584 states and 883 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 11:23:49,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:23:49,696 INFO L93 Difference]: Finished difference Result 1241 states and 1878 transitions. [2023-12-21 11:23:49,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 11:23:49,697 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 11:23:49,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:23:49,702 INFO L225 Difference]: With dead ends: 1241 [2023-12-21 11:23:49,703 INFO L226 Difference]: Without dead ends: 673 [2023-12-21 11:23:49,704 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 11:23:49,705 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 352 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 646 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 11:23:49,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 646 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:23:49,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2023-12-21 11:23:49,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 665. [2023-12-21 11:23:49,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 665 states, 503 states have (on average 1.4791252485089463) internal successors, (744), 506 states have internal predecessors, (744), 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 11:23:49,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 992 transitions. [2023-12-21 11:23:49,756 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 992 transitions. Word has length 49 [2023-12-21 11:23:49,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:23:49,756 INFO L495 AbstractCegarLoop]: Abstraction has 665 states and 992 transitions. [2023-12-21 11:23:49,757 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 11:23:49,757 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 992 transitions. [2023-12-21 11:23:49,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-21 11:23:49,759 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:23:49,759 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 11:23:49,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 11:23:49,759 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:23:49,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:23:49,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1026743594, now seen corresponding path program 1 times [2023-12-21 11:23:49,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:23:49,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891249953] [2023-12-21 11:23:49,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:23:49,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:23:49,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:49,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:23:49,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:49,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 11:23:49,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:49,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 11:23:49,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:49,866 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 11:23:49,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:23:49,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891249953] [2023-12-21 11:23:49,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891249953] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:23:49,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:23:49,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 11:23:49,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616690942] [2023-12-21 11:23:49,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:23:49,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 11:23:49,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:23:49,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 11:23:49,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 11:23:49,868 INFO L87 Difference]: Start difference. First operand 665 states and 992 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 11:23:50,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:23:50,019 INFO L93 Difference]: Finished difference Result 1245 states and 1878 transitions. [2023-12-21 11:23:50,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 11:23:50,019 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 11:23:50,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:23:50,023 INFO L225 Difference]: With dead ends: 1245 [2023-12-21 11:23:50,023 INFO L226 Difference]: Without dead ends: 677 [2023-12-21 11:23:50,025 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 11:23:50,026 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 349 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 648 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 11:23:50,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 648 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:23:50,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2023-12-21 11:23:50,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 673. [2023-12-21 11:23:50,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 511 states have (on average 1.471624266144814) internal successors, (752), 514 states have internal predecessors, (752), 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 11:23:50,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 1000 transitions. [2023-12-21 11:23:50,075 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 1000 transitions. Word has length 50 [2023-12-21 11:23:50,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:23:50,077 INFO L495 AbstractCegarLoop]: Abstraction has 673 states and 1000 transitions. [2023-12-21 11:23:50,077 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 11:23:50,077 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 1000 transitions. [2023-12-21 11:23:50,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-21 11:23:50,078 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:23:50,078 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 11:23:50,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 11:23:50,079 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:23:50,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:23:50,079 INFO L85 PathProgramCache]: Analyzing trace with hash -864045732, now seen corresponding path program 1 times [2023-12-21 11:23:50,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:23:50,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022427193] [2023-12-21 11:23:50,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:23:50,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:23:50,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:50,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:23:50,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:50,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 11:23:50,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:50,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 11:23:50,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:50,202 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 11:23:50,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:23:50,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022427193] [2023-12-21 11:23:50,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022427193] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:23:50,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:23:50,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:23:50,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28031409] [2023-12-21 11:23:50,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:23:50,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:23:50,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:23:50,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:23:50,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:23:50,204 INFO L87 Difference]: Start difference. First operand 673 states and 1000 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 11:23:50,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:23:50,347 INFO L93 Difference]: Finished difference Result 1245 states and 1870 transitions. [2023-12-21 11:23:50,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 11:23:50,348 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 11:23:50,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:23:50,351 INFO L225 Difference]: With dead ends: 1245 [2023-12-21 11:23:50,351 INFO L226 Difference]: Without dead ends: 677 [2023-12-21 11:23:50,353 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 11:23:50,354 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 61 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 641 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 11:23:50,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 641 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:23:50,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2023-12-21 11:23:50,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 673. [2023-12-21 11:23:50,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 511 states have (on average 1.4637964774951076) internal successors, (748), 514 states have internal predecessors, (748), 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 11:23:50,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 996 transitions. [2023-12-21 11:23:50,403 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 996 transitions. Word has length 52 [2023-12-21 11:23:50,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:23:50,403 INFO L495 AbstractCegarLoop]: Abstraction has 673 states and 996 transitions. [2023-12-21 11:23:50,403 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 11:23:50,403 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 996 transitions. [2023-12-21 11:23:50,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-21 11:23:50,418 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:23:50,419 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 11:23:50,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 11:23:50,419 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:23:50,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:23:50,419 INFO L85 PathProgramCache]: Analyzing trace with hash 798524631, now seen corresponding path program 1 times [2023-12-21 11:23:50,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:23:50,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498331039] [2023-12-21 11:23:50,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:23:50,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:23:50,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:50,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:23:50,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:50,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 11:23:50,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:50,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-21 11:23:50,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:50,586 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 11:23:50,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:23:50,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498331039] [2023-12-21 11:23:50,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498331039] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:23:50,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:23:50,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:23:50,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205991511] [2023-12-21 11:23:50,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:23:50,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:23:50,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:23:50,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:23:50,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:23:50,588 INFO L87 Difference]: Start difference. First operand 673 states and 996 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 11:23:50,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:23:50,658 INFO L93 Difference]: Finished difference Result 1261 states and 1890 transitions. [2023-12-21 11:23:50,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 11:23:50,659 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 11:23:50,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:23:50,664 INFO L225 Difference]: With dead ends: 1261 [2023-12-21 11:23:50,664 INFO L226 Difference]: Without dead ends: 693 [2023-12-21 11:23:50,666 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 11:23:50,668 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 6 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 731 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 11:23:50,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 731 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:23:50,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2023-12-21 11:23:50,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 693. [2023-12-21 11:23:50,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 527 states have (on average 1.4497153700189753) internal successors, (764), 530 states have internal predecessors, (764), 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 11:23:50,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1012 transitions. [2023-12-21 11:23:50,714 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1012 transitions. Word has length 53 [2023-12-21 11:23:50,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:23:50,714 INFO L495 AbstractCegarLoop]: Abstraction has 693 states and 1012 transitions. [2023-12-21 11:23:50,715 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 11:23:50,715 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1012 transitions. [2023-12-21 11:23:50,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-21 11:23:50,716 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:23:50,716 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 11:23:50,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 11:23:50,716 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:23:50,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:23:50,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1770618019, now seen corresponding path program 1 times [2023-12-21 11:23:50,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:23:50,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494644630] [2023-12-21 11:23:50,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:23:50,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:23:50,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:50,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:23:50,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:50,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 11:23:50,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:50,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-21 11:23:50,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:50,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 11:23:50,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:50,872 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 11:23:50,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:23:50,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494644630] [2023-12-21 11:23:50,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494644630] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:23:50,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:23:50,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:23:50,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574420390] [2023-12-21 11:23:50,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:23:50,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:23:50,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:23:50,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:23:50,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:23:50,874 INFO L87 Difference]: Start difference. First operand 693 states and 1012 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 11:23:50,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:23:50,961 INFO L93 Difference]: Finished difference Result 1301 states and 1934 transitions. [2023-12-21 11:23:50,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 11:23:50,961 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 11:23:50,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:23:50,965 INFO L225 Difference]: With dead ends: 1301 [2023-12-21 11:23:50,965 INFO L226 Difference]: Without dead ends: 713 [2023-12-21 11:23:50,967 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 11:23:50,968 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 6 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 717 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 11:23:50,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 717 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:23:50,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2023-12-21 11:23:51,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 713. [2023-12-21 11:23:51,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 543 states have (on average 1.4364640883977902) internal successors, (780), 546 states have internal predecessors, (780), 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 11:23:51,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1028 transitions. [2023-12-21 11:23:51,045 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1028 transitions. Word has length 61 [2023-12-21 11:23:51,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:23:51,046 INFO L495 AbstractCegarLoop]: Abstraction has 713 states and 1028 transitions. [2023-12-21 11:23:51,047 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 11:23:51,047 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1028 transitions. [2023-12-21 11:23:51,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-21 11:23:51,048 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:23:51,048 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 11:23:51,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-21 11:23:51,048 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:23:51,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:23:51,049 INFO L85 PathProgramCache]: Analyzing trace with hash 424993415, now seen corresponding path program 1 times [2023-12-21 11:23:51,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:23:51,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049936405] [2023-12-21 11:23:51,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:23:51,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:23:51,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:51,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:23:51,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:51,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 11:23:51,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:51,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-21 11:23:51,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:51,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 11:23:51,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:51,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 11:23:51,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:51,192 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 11:23:51,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:23:51,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049936405] [2023-12-21 11:23:51,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049936405] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:23:51,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:23:51,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:23:51,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835092752] [2023-12-21 11:23:51,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:23:51,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:23:51,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:23:51,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:23:51,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:23:51,193 INFO L87 Difference]: Start difference. First operand 713 states and 1028 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 11:23:51,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:23:51,268 INFO L93 Difference]: Finished difference Result 1337 states and 1950 transitions. [2023-12-21 11:23:51,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 11:23:51,269 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 11:23:51,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:23:51,273 INFO L225 Difference]: With dead ends: 1337 [2023-12-21 11:23:51,273 INFO L226 Difference]: Without dead ends: 729 [2023-12-21 11:23:51,275 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 11:23:51,275 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 5 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 726 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 11:23:51,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 726 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:23:51,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2023-12-21 11:23:51,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 729. [2023-12-21 11:23:51,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 729 states, 555 states have (on average 1.427027027027027) internal successors, (792), 558 states have internal predecessors, (792), 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 11:23:51,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 1040 transitions. [2023-12-21 11:23:51,317 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 1040 transitions. Word has length 69 [2023-12-21 11:23:51,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:23:51,318 INFO L495 AbstractCegarLoop]: Abstraction has 729 states and 1040 transitions. [2023-12-21 11:23:51,318 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 11:23:51,318 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 1040 transitions. [2023-12-21 11:23:51,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-21 11:23:51,319 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:23:51,319 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 11:23:51,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 11:23:51,320 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:23:51,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:23:51,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1473514578, now seen corresponding path program 1 times [2023-12-21 11:23:51,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:23:51,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99188259] [2023-12-21 11:23:51,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:23:51,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:23:51,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:51,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:23:51,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:51,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 11:23:51,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:51,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-21 11:23:51,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:51,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 11:23:51,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:51,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 11:23:51,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:51,463 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 11:23:51,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:23:51,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99188259] [2023-12-21 11:23:51,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99188259] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:23:51,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:23:51,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:23:51,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132731795] [2023-12-21 11:23:51,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:23:51,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:23:51,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:23:51,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:23:51,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:23:51,465 INFO L87 Difference]: Start difference. First operand 729 states and 1040 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 11:23:51,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:23:51,541 INFO L93 Difference]: Finished difference Result 1373 states and 1990 transitions. [2023-12-21 11:23:51,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 11:23:51,541 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 11:23:51,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:23:51,546 INFO L225 Difference]: With dead ends: 1373 [2023-12-21 11:23:51,547 INFO L226 Difference]: Without dead ends: 749 [2023-12-21 11:23:51,548 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 11:23:51,549 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 6 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 717 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 11:23:51,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 717 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:23:51,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2023-12-21 11:23:51,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 749. [2023-12-21 11:23:51,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 749 states, 571 states have (on average 1.415061295971979) internal successors, (808), 574 states have internal predecessors, (808), 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 11:23:51,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 1056 transitions. [2023-12-21 11:23:51,619 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 1056 transitions. Word has length 69 [2023-12-21 11:23:51,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:23:51,620 INFO L495 AbstractCegarLoop]: Abstraction has 749 states and 1056 transitions. [2023-12-21 11:23:51,620 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 11:23:51,620 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 1056 transitions. [2023-12-21 11:23:51,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-21 11:23:51,621 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:23:51,622 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 11:23:51,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 11:23:51,622 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:23:51,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:23:51,622 INFO L85 PathProgramCache]: Analyzing trace with hash -625847890, now seen corresponding path program 1 times [2023-12-21 11:23:51,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:23:51,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279753510] [2023-12-21 11:23:51,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:23:51,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:23:51,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:51,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:23:51,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:51,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 11:23:51,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:51,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-21 11:23:51,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:51,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 11:23:51,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:51,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 11:23:51,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:51,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-21 11:23:51,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:51,786 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 11:23:51,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:23:51,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279753510] [2023-12-21 11:23:51,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279753510] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:23:51,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:23:51,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:23:51,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058923247] [2023-12-21 11:23:51,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:23:51,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:23:51,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:23:51,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:23:51,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:23:51,788 INFO L87 Difference]: Start difference. First operand 749 states and 1056 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 11:23:51,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:23:51,860 INFO L93 Difference]: Finished difference Result 1417 states and 2018 transitions. [2023-12-21 11:23:51,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 11:23:51,860 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 11:23:51,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:23:51,864 INFO L225 Difference]: With dead ends: 1417 [2023-12-21 11:23:51,864 INFO L226 Difference]: Without dead ends: 773 [2023-12-21 11:23:51,866 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 11:23:51,867 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 7 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 728 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 11:23:51,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 728 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:23:51,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2023-12-21 11:23:51,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 773. [2023-12-21 11:23:51,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 773 states, 591 states have (on average 1.401015228426396) internal successors, (828), 594 states have internal predecessors, (828), 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 11:23:51,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 773 states to 773 states and 1076 transitions. [2023-12-21 11:23:51,914 INFO L78 Accepts]: Start accepts. Automaton has 773 states and 1076 transitions. Word has length 77 [2023-12-21 11:23:51,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:23:51,914 INFO L495 AbstractCegarLoop]: Abstraction has 773 states and 1076 transitions. [2023-12-21 11:23:51,914 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 11:23:51,914 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states and 1076 transitions. [2023-12-21 11:23:51,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-21 11:23:51,916 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:23:51,916 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 11:23:51,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 11:23:51,916 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:23:51,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:23:51,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1657714599, now seen corresponding path program 1 times [2023-12-21 11:23:51,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:23:51,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559967377] [2023-12-21 11:23:51,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:23:51,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:23:51,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:52,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:23:52,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:52,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 11:23:52,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:52,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-21 11:23:52,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:52,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 11:23:52,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:52,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 11:23:52,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:52,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-21 11:23:52,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:52,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 11:23:52,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:52,167 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 11:23:52,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:23:52,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559967377] [2023-12-21 11:23:52,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559967377] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:23:52,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:23:52,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:23:52,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072958911] [2023-12-21 11:23:52,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:23:52,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:23:52,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:23:52,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:23:52,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:23:52,169 INFO L87 Difference]: Start difference. First operand 773 states and 1076 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 11:23:52,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:23:52,461 INFO L93 Difference]: Finished difference Result 2149 states and 3011 transitions. [2023-12-21 11:23:52,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 11:23:52,462 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 11:23:52,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:23:52,471 INFO L225 Difference]: With dead ends: 2149 [2023-12-21 11:23:52,471 INFO L226 Difference]: Without dead ends: 1481 [2023-12-21 11:23:52,473 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 11:23:52,473 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 260 mSDsluCounter, 1145 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 1380 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 11:23:52,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 1380 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:23:52,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1481 states. [2023-12-21 11:23:52,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1481 to 1049. [2023-12-21 11:23:52,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1049 states, 794 states have (on average 1.3879093198992443) internal successors, (1102), 799 states have internal predecessors, (1102), 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 11:23:52,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1049 states to 1049 states and 1446 transitions. [2023-12-21 11:23:52,564 INFO L78 Accepts]: Start accepts. Automaton has 1049 states and 1446 transitions. Word has length 80 [2023-12-21 11:23:52,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:23:52,564 INFO L495 AbstractCegarLoop]: Abstraction has 1049 states and 1446 transitions. [2023-12-21 11:23:52,565 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 11:23:52,565 INFO L276 IsEmpty]: Start isEmpty. Operand 1049 states and 1446 transitions. [2023-12-21 11:23:52,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-21 11:23:52,566 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:23:52,566 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 11:23:52,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 11:23:52,566 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:23:52,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:23:52,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1049989745, now seen corresponding path program 1 times [2023-12-21 11:23:52,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:23:52,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242891625] [2023-12-21 11:23:52,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:23:52,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:23:52,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:52,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:23:52,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:52,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 11:23:52,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:52,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-21 11:23:52,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:52,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 11:23:52,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:52,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 11:23:52,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:52,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-21 11:23:52,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:52,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-21 11:23:52,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:52,704 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 11:23:52,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:23:52,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242891625] [2023-12-21 11:23:52,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242891625] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:23:52,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:23:52,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:23:52,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512593250] [2023-12-21 11:23:52,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:23:52,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:23:52,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:23:52,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:23:52,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:23:52,706 INFO L87 Difference]: Start difference. First operand 1049 states and 1446 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 11:23:52,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:23:52,798 INFO L93 Difference]: Finished difference Result 1957 states and 2718 transitions. [2023-12-21 11:23:52,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 11:23:52,798 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 11:23:52,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:23:52,804 INFO L225 Difference]: With dead ends: 1957 [2023-12-21 11:23:52,804 INFO L226 Difference]: Without dead ends: 1073 [2023-12-21 11:23:52,806 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 11:23:52,807 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 5 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 726 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 11:23:52,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 726 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:23:52,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1073 states. [2023-12-21 11:23:52,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1073 to 1073. [2023-12-21 11:23:52,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1073 states, 812 states have (on average 1.3793103448275863) internal successors, (1120), 817 states have internal predecessors, (1120), 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 11:23:52,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1073 states to 1073 states and 1464 transitions. [2023-12-21 11:23:52,888 INFO L78 Accepts]: Start accepts. Automaton has 1073 states and 1464 transitions. Word has length 84 [2023-12-21 11:23:52,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:23:52,889 INFO L495 AbstractCegarLoop]: Abstraction has 1073 states and 1464 transitions. [2023-12-21 11:23:52,889 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 11:23:52,889 INFO L276 IsEmpty]: Start isEmpty. Operand 1073 states and 1464 transitions. [2023-12-21 11:23:52,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-21 11:23:52,890 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:23:52,890 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 11:23:52,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 11:23:52,891 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:23:52,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:23:52,891 INFO L85 PathProgramCache]: Analyzing trace with hash 880976071, now seen corresponding path program 1 times [2023-12-21 11:23:52,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:23:52,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527745281] [2023-12-21 11:23:52,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:23:52,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:23:52,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:53,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:23:53,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:53,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 11:23:53,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:53,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-21 11:23:53,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:53,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 11:23:53,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:53,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 11:23:53,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:53,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-21 11:23:53,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:53,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 11:23:53,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:53,119 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 11:23:53,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:23:53,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527745281] [2023-12-21 11:23:53,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527745281] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:23:53,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:23:53,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 11:23:53,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719813583] [2023-12-21 11:23:53,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:23:53,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 11:23:53,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:23:53,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 11:23:53,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-21 11:23:53,121 INFO L87 Difference]: Start difference. First operand 1073 states and 1464 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 11:23:53,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:23:53,348 INFO L93 Difference]: Finished difference Result 1489 states and 2140 transitions. [2023-12-21 11:23:53,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 11:23:53,348 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 11:23:53,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:23:53,356 INFO L225 Difference]: With dead ends: 1489 [2023-12-21 11:23:53,356 INFO L226 Difference]: Without dead ends: 1487 [2023-12-21 11:23:53,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-12-21 11:23:53,357 INFO L413 NwaCegarLoop]: 426 mSDtfsCounter, 314 mSDsluCounter, 2012 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 2438 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:23:53,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 2438 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:23:53,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1487 states. [2023-12-21 11:23:53,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1487 to 1081. [2023-12-21 11:23:53,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1081 states, 816 states have (on average 1.3774509803921569) internal successors, (1124), 823 states have internal predecessors, (1124), 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 11:23:53,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1081 states to 1081 states and 1472 transitions. [2023-12-21 11:23:53,450 INFO L78 Accepts]: Start accepts. Automaton has 1081 states and 1472 transitions. Word has length 83 [2023-12-21 11:23:53,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:23:53,450 INFO L495 AbstractCegarLoop]: Abstraction has 1081 states and 1472 transitions. [2023-12-21 11:23:53,451 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 11:23:53,451 INFO L276 IsEmpty]: Start isEmpty. Operand 1081 states and 1472 transitions. [2023-12-21 11:23:53,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-21 11:23:53,452 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:23:53,452 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 11:23:53,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-21 11:23:53,452 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:23:53,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:23:53,453 INFO L85 PathProgramCache]: Analyzing trace with hash 600868425, now seen corresponding path program 1 times [2023-12-21 11:23:53,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:23:53,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852457097] [2023-12-21 11:23:53,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:23:53,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:23:53,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:53,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:23:53,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:53,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 11:23:53,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:53,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-21 11:23:53,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:53,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 11:23:53,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:53,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 11:23:53,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:53,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-21 11:23:53,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:53,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 11:23:53,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:53,588 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 11:23:53,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:23:53,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852457097] [2023-12-21 11:23:53,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852457097] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:23:53,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:23:53,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:23:53,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294877519] [2023-12-21 11:23:53,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:23:53,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:23:53,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:23:53,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:23:53,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:23:53,590 INFO L87 Difference]: Start difference. First operand 1081 states and 1472 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 11:23:53,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:23:53,787 INFO L93 Difference]: Finished difference Result 1955 states and 2671 transitions. [2023-12-21 11:23:53,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 11:23:53,787 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 11:23:53,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:23:53,792 INFO L225 Difference]: With dead ends: 1955 [2023-12-21 11:23:53,792 INFO L226 Difference]: Without dead ends: 1121 [2023-12-21 11:23:53,794 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 11:23:53,795 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 248 mSDsluCounter, 1182 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 1431 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 11:23:53,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 1431 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:23:53,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1121 states. [2023-12-21 11:23:53,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1121 to 1075. [2023-12-21 11:23:53,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 821 states have (on average 1.371498172959805) internal successors, (1126), 833 states have internal predecessors, (1126), 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 11:23:53,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 1450 transitions. [2023-12-21 11:23:53,870 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 1450 transitions. Word has length 86 [2023-12-21 11:23:53,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:23:53,871 INFO L495 AbstractCegarLoop]: Abstraction has 1075 states and 1450 transitions. [2023-12-21 11:23:53,871 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 11:23:53,871 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 1450 transitions. [2023-12-21 11:23:53,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-21 11:23:53,874 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:23:53,874 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 11:23:53,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-21 11:23:53,875 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:23:53,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:23:53,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1743472577, now seen corresponding path program 1 times [2023-12-21 11:23:53,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:23:53,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811020796] [2023-12-21 11:23:53,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:23:53,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:23:53,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:54,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:23:54,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:54,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 11:23:54,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:54,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-21 11:23:54,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:54,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 11:23:54,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:54,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 11:23:54,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:54,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-21 11:23:54,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:54,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 11:23:54,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:54,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 11:23:54,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:54,120 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 11:23:54,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:23:54,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811020796] [2023-12-21 11:23:54,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811020796] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:23:54,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:23:54,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:23:54,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387099516] [2023-12-21 11:23:54,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:23:54,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:23:54,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:23:54,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:23:54,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:23:54,122 INFO L87 Difference]: Start difference. First operand 1075 states and 1450 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 11:23:54,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:23:54,373 INFO L93 Difference]: Finished difference Result 2021 states and 2759 transitions. [2023-12-21 11:23:54,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 11:23:54,374 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 11:23:54,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:23:54,379 INFO L225 Difference]: With dead ends: 2021 [2023-12-21 11:23:54,379 INFO L226 Difference]: Without dead ends: 1173 [2023-12-21 11:23:54,381 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 11:23:54,381 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 198 mSDsluCounter, 1311 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 1594 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 11:23:54,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 1594 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:23:54,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2023-12-21 11:23:54,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 967. [2023-12-21 11:23:54,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 967 states, 740 states have (on average 1.3756756756756756) internal successors, (1018), 750 states have internal predecessors, (1018), 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 11:23:54,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 1308 transitions. [2023-12-21 11:23:54,472 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 1308 transitions. Word has length 88 [2023-12-21 11:23:54,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:23:54,473 INFO L495 AbstractCegarLoop]: Abstraction has 967 states and 1308 transitions. [2023-12-21 11:23:54,473 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 11:23:54,473 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 1308 transitions. [2023-12-21 11:23:54,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-21 11:23:54,474 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:23:54,474 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 11:23:54,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-21 11:23:54,475 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:23:54,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:23:54,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1697658043, now seen corresponding path program 1 times [2023-12-21 11:23:54,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:23:54,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18021891] [2023-12-21 11:23:54,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:23:54,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:23:54,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:54,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:23:54,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:54,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 11:23:54,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:54,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-21 11:23:54,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:54,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 11:23:54,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:54,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 11:23:54,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:54,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-21 11:23:54,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:54,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-21 11:23:54,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:54,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-21 11:23:54,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:54,731 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 11:23:54,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:23:54,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18021891] [2023-12-21 11:23:54,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18021891] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:23:54,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:23:54,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 11:23:54,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836700298] [2023-12-21 11:23:54,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:23:54,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 11:23:54,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:23:54,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 11:23:54,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-21 11:23:54,735 INFO L87 Difference]: Start difference. First operand 967 states and 1308 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 11:23:55,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:23:55,299 INFO L93 Difference]: Finished difference Result 2080 states and 2854 transitions. [2023-12-21 11:23:55,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 11:23:55,300 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 11:23:55,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:23:55,306 INFO L225 Difference]: With dead ends: 2080 [2023-12-21 11:23:55,306 INFO L226 Difference]: Without dead ends: 1259 [2023-12-21 11:23:55,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2023-12-21 11:23:55,308 INFO L413 NwaCegarLoop]: 327 mSDtfsCounter, 745 mSDsluCounter, 1094 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 751 SdHoareTripleChecker+Valid, 1421 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 11:23:55,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [751 Valid, 1421 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 11:23:55,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1259 states. [2023-12-21 11:23:55,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1259 to 983. [2023-12-21 11:23:55,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 983 states, 748 states have (on average 1.3516042780748663) internal successors, (1011), 759 states have internal predecessors, (1011), 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 11:23:55,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 983 states to 983 states and 1307 transitions. [2023-12-21 11:23:55,449 INFO L78 Accepts]: Start accepts. Automaton has 983 states and 1307 transitions. Word has length 89 [2023-12-21 11:23:55,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:23:55,449 INFO L495 AbstractCegarLoop]: Abstraction has 983 states and 1307 transitions. [2023-12-21 11:23:55,450 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 11:23:55,450 INFO L276 IsEmpty]: Start isEmpty. Operand 983 states and 1307 transitions. [2023-12-21 11:23:55,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-21 11:23:55,451 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:23:55,451 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 11:23:55,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-21 11:23:55,451 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:23:55,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:23:55,452 INFO L85 PathProgramCache]: Analyzing trace with hash -934830644, now seen corresponding path program 1 times [2023-12-21 11:23:55,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:23:55,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122503383] [2023-12-21 11:23:55,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:23:55,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:23:55,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:55,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:23:55,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:55,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:23:55,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:55,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-21 11:23:55,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:55,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-21 11:23:55,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:55,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-21 11:23:55,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:55,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 11:23:55,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:55,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 11:23:55,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:55,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 11:23:55,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:55,542 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 11:23:55,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:23:55,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122503383] [2023-12-21 11:23:55,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122503383] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:23:55,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:23:55,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:23:55,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460056960] [2023-12-21 11:23:55,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:23:55,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:23:55,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:23:55,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:23:55,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:23:55,544 INFO L87 Difference]: Start difference. First operand 983 states and 1307 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 11:23:55,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:23:55,760 INFO L93 Difference]: Finished difference Result 2606 states and 3483 transitions. [2023-12-21 11:23:55,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 11:23:55,760 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 11:23:55,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:23:55,769 INFO L225 Difference]: With dead ends: 2606 [2023-12-21 11:23:55,769 INFO L226 Difference]: Without dead ends: 1820 [2023-12-21 11:23:55,772 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 11:23:55,773 INFO L413 NwaCegarLoop]: 437 mSDtfsCounter, 199 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 1099 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 11:23:55,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 1099 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:23:55,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1820 states. [2023-12-21 11:23:55,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1820 to 1711. [2023-12-21 11:23:55,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1711 states, 1286 states have (on average 1.3413685847589425) internal successors, (1725), 1305 states have internal predecessors, (1725), 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 11:23:55,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1711 states to 1711 states and 2269 transitions. [2023-12-21 11:23:55,981 INFO L78 Accepts]: Start accepts. Automaton has 1711 states and 2269 transitions. Word has length 90 [2023-12-21 11:23:55,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:23:55,982 INFO L495 AbstractCegarLoop]: Abstraction has 1711 states and 2269 transitions. [2023-12-21 11:23:55,982 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 11:23:55,982 INFO L276 IsEmpty]: Start isEmpty. Operand 1711 states and 2269 transitions. [2023-12-21 11:23:55,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-21 11:23:55,983 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:23:55,983 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 11:23:55,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-21 11:23:55,984 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:23:55,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:23:55,984 INFO L85 PathProgramCache]: Analyzing trace with hash -102190207, now seen corresponding path program 1 times [2023-12-21 11:23:55,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:23:55,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270291702] [2023-12-21 11:23:55,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:23:55,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:23:56,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:56,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:23:56,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:56,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:23:56,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:56,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-21 11:23:56,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:56,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-21 11:23:56,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:56,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-21 11:23:56,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:56,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 11:23:56,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:56,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 11:23:56,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:56,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 11:23:56,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:56,259 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 11:23:56,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:23:56,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270291702] [2023-12-21 11:23:56,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270291702] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:23:56,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:23:56,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:23:56,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531669526] [2023-12-21 11:23:56,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:23:56,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:23:56,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:23:56,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:23:56,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:23:56,261 INFO L87 Difference]: Start difference. First operand 1711 states and 2269 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 11:23:57,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:23:57,024 INFO L93 Difference]: Finished difference Result 3582 states and 4810 transitions. [2023-12-21 11:23:57,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 11:23:57,024 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 11:23:57,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:23:57,034 INFO L225 Difference]: With dead ends: 3582 [2023-12-21 11:23:57,035 INFO L226 Difference]: Without dead ends: 2144 [2023-12-21 11:23:57,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 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 11:23:57,039 INFO L413 NwaCegarLoop]: 361 mSDtfsCounter, 576 mSDsluCounter, 1238 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 579 SdHoareTripleChecker+Valid, 1599 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 11:23:57,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [579 Valid, 1599 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 11:23:57,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2144 states. [2023-12-21 11:23:57,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2144 to 1738. [2023-12-21 11:23:57,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1738 states, 1300 states have (on average 1.3346153846153845) internal successors, (1735), 1320 states have internal predecessors, (1735), 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 11:23:57,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1738 states to 1738 states and 2295 transitions. [2023-12-21 11:23:57,242 INFO L78 Accepts]: Start accepts. Automaton has 1738 states and 2295 transitions. Word has length 92 [2023-12-21 11:23:57,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:23:57,242 INFO L495 AbstractCegarLoop]: Abstraction has 1738 states and 2295 transitions. [2023-12-21 11:23:57,243 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 11:23:57,243 INFO L276 IsEmpty]: Start isEmpty. Operand 1738 states and 2295 transitions. [2023-12-21 11:23:57,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-21 11:23:57,244 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:23:57,244 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 11:23:57,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-21 11:23:57,245 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:23:57,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:23:57,245 INFO L85 PathProgramCache]: Analyzing trace with hash -499793690, now seen corresponding path program 1 times [2023-12-21 11:23:57,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:23:57,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440324978] [2023-12-21 11:23:57,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:23:57,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:23:57,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:57,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:23:57,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:57,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-21 11:23:57,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:57,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-21 11:23:57,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:57,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-21 11:23:57,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:57,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 11:23:57,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:57,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-21 11:23:57,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:57,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 11:23:57,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:57,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 11:23:57,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:57,362 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 11:23:57,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:23:57,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440324978] [2023-12-21 11:23:57,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440324978] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:23:57,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:23:57,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:23:57,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392073387] [2023-12-21 11:23:57,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:23:57,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:23:57,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:23:57,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:23:57,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:23:57,365 INFO L87 Difference]: Start difference. First operand 1738 states and 2295 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 11:23:57,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:23:57,768 INFO L93 Difference]: Finished difference Result 4424 states and 5873 transitions. [2023-12-21 11:23:57,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 11:23:57,769 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 11:23:57,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:23:57,784 INFO L225 Difference]: With dead ends: 4424 [2023-12-21 11:23:57,784 INFO L226 Difference]: Without dead ends: 3002 [2023-12-21 11:23:57,789 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 11:23:57,791 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 204 mSDsluCounter, 682 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 1135 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 11:23:57,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 1135 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:23:57,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3002 states. [2023-12-21 11:23:58,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3002 to 2749. [2023-12-21 11:23:58,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2749 states, 2036 states have (on average 1.3222003929273085) internal successors, (2692), 2067 states have internal predecessors, (2692), 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 11:23:58,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2749 states to 2749 states and 3612 transitions. [2023-12-21 11:23:58,144 INFO L78 Accepts]: Start accepts. Automaton has 2749 states and 3612 transitions. Word has length 94 [2023-12-21 11:23:58,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:23:58,145 INFO L495 AbstractCegarLoop]: Abstraction has 2749 states and 3612 transitions. [2023-12-21 11:23:58,145 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 11:23:58,146 INFO L276 IsEmpty]: Start isEmpty. Operand 2749 states and 3612 transitions. [2023-12-21 11:23:58,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-21 11:23:58,148 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:23:58,148 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 11:23:58,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-21 11:23:58,149 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:23:58,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:23:58,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1287109644, now seen corresponding path program 1 times [2023-12-21 11:23:58,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:23:58,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165335050] [2023-12-21 11:23:58,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:23:58,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:23:58,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:58,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:23:58,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:58,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-21 11:23:58,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:58,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 11:23:58,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:58,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-21 11:23:58,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:58,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-21 11:23:58,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:58,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-21 11:23:58,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:58,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-21 11:23:58,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:58,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 11:23:58,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:58,247 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 11:23:58,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:23:58,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165335050] [2023-12-21 11:23:58,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165335050] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:23:58,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:23:58,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:23:58,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903002872] [2023-12-21 11:23:58,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:23:58,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:23:58,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:23:58,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:23:58,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:23:58,249 INFO L87 Difference]: Start difference. First operand 2749 states and 3612 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 11:23:58,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:23:58,699 INFO L93 Difference]: Finished difference Result 6439 states and 8497 transitions. [2023-12-21 11:23:58,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 11:23:58,699 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 11:23:58,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:23:58,726 INFO L225 Difference]: With dead ends: 6439 [2023-12-21 11:23:58,726 INFO L226 Difference]: Without dead ends: 4122 [2023-12-21 11:23:58,734 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 11:23:58,735 INFO L413 NwaCegarLoop]: 464 mSDtfsCounter, 198 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 1151 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 11:23:58,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 1151 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:23:58,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4122 states. [2023-12-21 11:23:59,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4122 to 3947. [2023-12-21 11:23:59,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3947 states, 2910 states have (on average 1.3175257731958763) internal successors, (3834), 2954 states have internal predecessors, (3834), 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 11:23:59,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3947 states to 3947 states and 5178 transitions. [2023-12-21 11:23:59,173 INFO L78 Accepts]: Start accepts. Automaton has 3947 states and 5178 transitions. Word has length 94 [2023-12-21 11:23:59,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:23:59,174 INFO L495 AbstractCegarLoop]: Abstraction has 3947 states and 5178 transitions. [2023-12-21 11:23:59,174 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 11:23:59,174 INFO L276 IsEmpty]: Start isEmpty. Operand 3947 states and 5178 transitions. [2023-12-21 11:23:59,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-21 11:23:59,176 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:23:59,176 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 11:23:59,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-21 11:23:59,177 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:23:59,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:23:59,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1710634141, now seen corresponding path program 1 times [2023-12-21 11:23:59,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:23:59,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270370855] [2023-12-21 11:23:59,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:23:59,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:23:59,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:59,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:23:59,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:59,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 11:23:59,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:59,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-21 11:23:59,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:59,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 11:23:59,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:59,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-21 11:23:59,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:59,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-21 11:23:59,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:59,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-21 11:23:59,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:59,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-21 11:23:59,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:59,235 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 11:23:59,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:23:59,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270370855] [2023-12-21 11:23:59,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270370855] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:23:59,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:23:59,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:23:59,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585773643] [2023-12-21 11:23:59,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:23:59,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:23:59,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:23:59,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:23:59,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:23:59,239 INFO L87 Difference]: Start difference. First operand 3947 states and 5178 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 11:23:59,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:23:59,642 INFO L93 Difference]: Finished difference Result 7595 states and 10009 transitions. [2023-12-21 11:23:59,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:23:59,643 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 11:23:59,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:23:59,674 INFO L225 Difference]: With dead ends: 7595 [2023-12-21 11:23:59,674 INFO L226 Difference]: Without dead ends: 3980 [2023-12-21 11:23:59,682 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 11:23:59,683 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 7 mSDsluCounter, 218 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 11:23:59,684 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 11:23:59,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3980 states. [2023-12-21 11:24:00,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3980 to 3953. [2023-12-21 11:24:00,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3953 states, 2916 states have (on average 1.316872427983539) internal successors, (3840), 2960 states have internal predecessors, (3840), 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 11:24:00,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3953 states to 3953 states and 5184 transitions. [2023-12-21 11:24:00,098 INFO L78 Accepts]: Start accepts. Automaton has 3953 states and 5184 transitions. Word has length 95 [2023-12-21 11:24:00,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:24:00,098 INFO L495 AbstractCegarLoop]: Abstraction has 3953 states and 5184 transitions. [2023-12-21 11:24:00,099 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 11:24:00,099 INFO L276 IsEmpty]: Start isEmpty. Operand 3953 states and 5184 transitions. [2023-12-21 11:24:00,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-21 11:24:00,101 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:24:00,103 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 11:24:00,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-21 11:24:00,104 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:24:00,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:24:00,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1976702663, now seen corresponding path program 1 times [2023-12-21 11:24:00,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:24:00,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317399775] [2023-12-21 11:24:00,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:00,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:24:00,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:00,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:24:00,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:00,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-21 11:24:00,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:00,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 11:24:00,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:00,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-21 11:24:00,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:00,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-21 11:24:00,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:00,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-21 11:24:00,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:00,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-21 11:24:00,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:00,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 11:24:00,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:00,232 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 11:24:00,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:24:00,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317399775] [2023-12-21 11:24:00,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317399775] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:24:00,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:24:00,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:24:00,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988631371] [2023-12-21 11:24:00,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:24:00,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:24:00,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:24:00,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:24:00,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:24:00,234 INFO L87 Difference]: Start difference. First operand 3953 states and 5184 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 11:24:00,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:24:00,611 INFO L93 Difference]: Finished difference Result 7565 states and 9941 transitions. [2023-12-21 11:24:00,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 11:24:00,612 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 11:24:00,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:24:00,628 INFO L225 Difference]: With dead ends: 7565 [2023-12-21 11:24:00,628 INFO L226 Difference]: Without dead ends: 3678 [2023-12-21 11:24:00,640 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 11:24:00,640 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 84 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 713 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 11:24:00,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 713 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:24:00,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3678 states. [2023-12-21 11:24:00,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3678 to 3611. [2023-12-21 11:24:01,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3611 states, 2657 states have (on average 1.3266842303349642) internal successors, (3525), 2691 states have internal predecessors, (3525), 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 11:24:01,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3611 states to 3611 states and 4765 transitions. [2023-12-21 11:24:01,016 INFO L78 Accepts]: Start accepts. Automaton has 3611 states and 4765 transitions. Word has length 96 [2023-12-21 11:24:01,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:24:01,016 INFO L495 AbstractCegarLoop]: Abstraction has 3611 states and 4765 transitions. [2023-12-21 11:24:01,016 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 11:24:01,016 INFO L276 IsEmpty]: Start isEmpty. Operand 3611 states and 4765 transitions. [2023-12-21 11:24:01,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-21 11:24:01,017 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:24:01,018 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 11:24:01,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-21 11:24:01,018 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:24:01,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:24:01,018 INFO L85 PathProgramCache]: Analyzing trace with hash 378932519, now seen corresponding path program 1 times [2023-12-21 11:24:01,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:24:01,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085771282] [2023-12-21 11:24:01,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:01,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:24:01,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:01,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:24:01,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:01,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 11:24:01,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:01,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-21 11:24:01,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:01,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 11:24:01,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:01,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-21 11:24:01,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:01,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-21 11:24:01,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:01,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-21 11:24:01,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:01,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-21 11:24:01,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:01,069 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 11:24:01,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:24:01,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085771282] [2023-12-21 11:24:01,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085771282] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:24:01,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:24:01,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:24:01,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845362748] [2023-12-21 11:24:01,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:24:01,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:24:01,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:24:01,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:24:01,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:24:01,072 INFO L87 Difference]: Start difference. First operand 3611 states and 4765 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 11:24:01,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:24:01,393 INFO L93 Difference]: Finished difference Result 7104 states and 9412 transitions. [2023-12-21 11:24:01,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:24:01,394 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 11:24:01,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:24:01,406 INFO L225 Difference]: With dead ends: 7104 [2023-12-21 11:24:01,406 INFO L226 Difference]: Without dead ends: 3662 [2023-12-21 11:24:01,414 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 11:24:01,415 INFO L413 NwaCegarLoop]: 251 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, 468 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 11:24:01,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 468 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:24:01,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3662 states. [2023-12-21 11:24:01,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3662 to 3621. [2023-12-21 11:24:01,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3621 states, 2667 states have (on average 1.3254593175853018) internal successors, (3535), 2701 states have internal predecessors, (3535), 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 11:24:01,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3621 states to 3621 states and 4775 transitions. [2023-12-21 11:24:01,779 INFO L78 Accepts]: Start accepts. Automaton has 3621 states and 4775 transitions. Word has length 97 [2023-12-21 11:24:01,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:24:01,780 INFO L495 AbstractCegarLoop]: Abstraction has 3621 states and 4775 transitions. [2023-12-21 11:24:01,780 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 11:24:01,780 INFO L276 IsEmpty]: Start isEmpty. Operand 3621 states and 4775 transitions. [2023-12-21 11:24:01,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-21 11:24:01,781 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:24:01,781 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 11:24:01,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-21 11:24:01,782 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:24:01,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:24:01,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1703690164, now seen corresponding path program 1 times [2023-12-21 11:24:01,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:24:01,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763632338] [2023-12-21 11:24:01,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:01,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:24:01,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:01,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:24:01,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:01,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 11:24:01,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:01,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-21 11:24:01,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:01,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 11:24:01,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:01,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-21 11:24:01,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:01,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-21 11:24:01,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:01,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-21 11:24:01,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:01,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-21 11:24:01,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:01,890 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 11:24:01,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:24:01,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763632338] [2023-12-21 11:24:01,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763632338] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:24:01,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:24:01,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:24:01,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444496234] [2023-12-21 11:24:01,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:24:01,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:24:01,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:24:01,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:24:01,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:24:01,892 INFO L87 Difference]: Start difference. First operand 3621 states and 4775 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 11:24:02,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:24:02,198 INFO L93 Difference]: Finished difference Result 7064 states and 9332 transitions. [2023-12-21 11:24:02,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 11:24:02,199 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 11:24:02,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:24:02,210 INFO L225 Difference]: With dead ends: 7064 [2023-12-21 11:24:02,210 INFO L226 Difference]: Without dead ends: 3552 [2023-12-21 11:24:02,219 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 11:24:02,219 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 66 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 718 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 11:24:02,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 718 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:24:02,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3552 states. [2023-12-21 11:24:02,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3552 to 2731. [2023-12-21 11:24:02,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2731 states, 2011 states have (on average 1.3197414221780208) internal successors, (2654), 2030 states have internal predecessors, (2654), 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 11:24:02,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2731 states to 2731 states and 3592 transitions. [2023-12-21 11:24:02,515 INFO L78 Accepts]: Start accepts. Automaton has 2731 states and 3592 transitions. Word has length 97 [2023-12-21 11:24:02,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:24:02,515 INFO L495 AbstractCegarLoop]: Abstraction has 2731 states and 3592 transitions. [2023-12-21 11:24:02,515 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 11:24:02,515 INFO L276 IsEmpty]: Start isEmpty. Operand 2731 states and 3592 transitions. [2023-12-21 11:24:02,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 11:24:02,519 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:24:02,519 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, 1] [2023-12-21 11:24:02,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-21 11:24:02,520 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:24:02,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:24:02,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1951005918, now seen corresponding path program 1 times [2023-12-21 11:24:02,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:24:02,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991496513] [2023-12-21 11:24:02,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:02,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:24:02,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:02,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:24:02,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:02,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 11:24:02,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:02,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-21 11:24:02,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:02,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 11:24:02,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:02,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 11:24:02,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:02,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-21 11:24:02,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:02,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 11:24:02,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:02,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-21 11:24:02,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:02,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-21 11:24:02,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:02,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-21 11:24:02,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:02,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 11:24:02,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:02,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 11:24:02,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:02,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-12-21 11:24:02,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:02,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-12-21 11:24:02,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:02,815 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 11:24:02,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:24:02,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991496513] [2023-12-21 11:24:02,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991496513] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:24:02,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457523231] [2023-12-21 11:24:02,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:02,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:24:02,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:24:02,822 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 11:24:02,828 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 11:24:03,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:03,017 INFO L262 TraceCheckSpWp]: Trace formula consists of 616 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-21 11:24:03,034 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:24:03,224 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 11:24:03,224 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:24:03,388 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 11:24:03,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [457523231] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:24:03,389 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:24:03,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-12-21 11:24:03,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318787154] [2023-12-21 11:24:03,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:24:03,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 11:24:03,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:24:03,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 11:24:03,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-12-21 11:24:03,390 INFO L87 Difference]: Start difference. First operand 2731 states and 3592 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, (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 11:24:04,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:24:04,986 INFO L93 Difference]: Finished difference Result 6518 states and 8709 transitions. [2023-12-21 11:24:04,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-21 11:24:04,987 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, (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 141 [2023-12-21 11:24:04,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:24:05,001 INFO L225 Difference]: With dead ends: 6518 [2023-12-21 11:24:05,001 INFO L226 Difference]: Without dead ends: 4023 [2023-12-21 11:24:05,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 308 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=252, Invalid=938, Unknown=0, NotChecked=0, Total=1190 [2023-12-21 11:24:05,011 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 1418 mSDsluCounter, 1591 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 471 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1418 SdHoareTripleChecker+Valid, 1827 SdHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 471 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 11:24:05,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1418 Valid, 1827 Invalid, 930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [471 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 11:24:05,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4023 states. [2023-12-21 11:24:05,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4023 to 3466. [2023-12-21 11:24:05,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3466 states, 2557 states have (on average 1.3105201407899882) internal successors, (3351), 2581 states have internal predecessors, (3351), 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 11:24:05,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3466 states to 3466 states and 4521 transitions. [2023-12-21 11:24:05,467 INFO L78 Accepts]: Start accepts. Automaton has 3466 states and 4521 transitions. Word has length 141 [2023-12-21 11:24:05,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:24:05,468 INFO L495 AbstractCegarLoop]: Abstraction has 3466 states and 4521 transitions. [2023-12-21 11:24:05,468 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, (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 11:24:05,468 INFO L276 IsEmpty]: Start isEmpty. Operand 3466 states and 4521 transitions. [2023-12-21 11:24:05,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-21 11:24:05,473 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:24:05,473 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, 1] [2023-12-21 11:24:05,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-21 11:24:05,680 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 11:24:05,680 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:24:05,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:24:05,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1644827963, now seen corresponding path program 1 times [2023-12-21 11:24:05,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:24:05,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012914075] [2023-12-21 11:24:05,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:05,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:24:05,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:05,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:24:05,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:05,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 11:24:05,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:05,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-21 11:24:05,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:05,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 11:24:05,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:05,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 11:24:05,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:05,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-21 11:24:05,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:05,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 11:24:05,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:05,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 11:24:05,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:05,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-21 11:24:05,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:05,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 11:24:05,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:05,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-21 11:24:05,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:05,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-12-21 11:24:05,884 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 122 [2023-12-21 11:24:05,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:05,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-12-21 11:24:05,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:05,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-21 11:24:05,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:05,902 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 11:24:05,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:24:05,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012914075] [2023-12-21 11:24:05,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012914075] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:24:05,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:24:05,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:24:05,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021087437] [2023-12-21 11:24:05,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:24:05,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:24:05,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:24:05,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:24:05,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:24:05,904 INFO L87 Difference]: Start difference. First operand 3466 states and 4521 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 6 states have internal predecessors, (84), 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 11:24:07,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:24:07,111 INFO L93 Difference]: Finished difference Result 11216 states and 15195 transitions. [2023-12-21 11:24:07,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 11:24:07,111 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 6 states have internal predecessors, (84), 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 150 [2023-12-21 11:24:07,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:24:07,142 INFO L225 Difference]: With dead ends: 11216 [2023-12-21 11:24:07,142 INFO L226 Difference]: Without dead ends: 8084 [2023-12-21 11:24:07,151 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 11:24:07,152 INFO L413 NwaCegarLoop]: 403 mSDtfsCounter, 317 mSDsluCounter, 1769 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 2172 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 11:24:07,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 2172 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 11:24:07,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8084 states. [2023-12-21 11:24:07,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8084 to 6192. [2023-12-21 11:24:07,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6192 states, 4515 states have (on average 1.3094130675526023) internal successors, (5912), 4561 states have internal predecessors, (5912), 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 11:24:07,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6192 states to 6192 states and 8102 transitions. [2023-12-21 11:24:07,983 INFO L78 Accepts]: Start accepts. Automaton has 6192 states and 8102 transitions. Word has length 150 [2023-12-21 11:24:07,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:24:07,985 INFO L495 AbstractCegarLoop]: Abstraction has 6192 states and 8102 transitions. [2023-12-21 11:24:07,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 6 states have internal predecessors, (84), 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 11:24:07,986 INFO L276 IsEmpty]: Start isEmpty. Operand 6192 states and 8102 transitions. [2023-12-21 11:24:07,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-21 11:24:07,994 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:24:07,994 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, 1] [2023-12-21 11:24:07,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-21 11:24:07,995 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:24:07,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:24:07,995 INFO L85 PathProgramCache]: Analyzing trace with hash 182445753, now seen corresponding path program 1 times [2023-12-21 11:24:07,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:24:07,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970920671] [2023-12-21 11:24:07,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:07,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:24:08,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:08,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:24:08,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:08,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:24:08,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:08,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-21 11:24:08,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:08,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-21 11:24:08,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:08,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-21 11:24:08,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:08,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 11:24:08,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:08,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 11:24:08,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:08,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 11:24:08,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:08,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-21 11:24:08,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:08,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-21 11:24:08,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:08,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-21 11:24:08,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:08,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-12-21 11:24:08,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:08,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-12-21 11:24:08,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:08,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-12-21 11:24:08,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:08,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-21 11:24:08,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:08,502 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 11:24:08,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:24:08,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970920671] [2023-12-21 11:24:08,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970920671] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:24:08,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787205047] [2023-12-21 11:24:08,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:08,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:24:08,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:24:08,513 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 11:24:08,531 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 11:24:08,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:08,681 INFO L262 TraceCheckSpWp]: Trace formula consists of 652 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 11:24:08,686 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:24:08,907 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 11:24:08,907 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:24:09,125 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 11:24:09,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787205047] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:24:09,126 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:24:09,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2023-12-21 11:24:09,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519760119] [2023-12-21 11:24:09,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:24:09,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-21 11:24:09,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:24:09,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-21 11:24:09,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2023-12-21 11:24:09,128 INFO L87 Difference]: Start difference. First operand 6192 states and 8102 transitions. Second operand has 16 states, 16 states have (on average 11.5) internal successors, (184), 14 states have internal predecessors, (184), 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 11:24:15,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:24:15,836 INFO L93 Difference]: Finished difference Result 26397 states and 35440 transitions. [2023-12-21 11:24:15,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2023-12-21 11:24:15,836 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.5) internal successors, (184), 14 states have internal predecessors, (184), 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 150 [2023-12-21 11:24:15,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:24:15,913 INFO L225 Difference]: With dead ends: 26397 [2023-12-21 11:24:15,914 INFO L226 Difference]: Without dead ends: 20468 [2023-12-21 11:24:15,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 351 SyntacticMatches, 4 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4167 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1651, Invalid=10559, Unknown=0, NotChecked=0, Total=12210 [2023-12-21 11:24:15,933 INFO L413 NwaCegarLoop]: 989 mSDtfsCounter, 4946 mSDsluCounter, 8385 mSDsCounter, 0 mSdLazyCounter, 2626 mSolverCounterSat, 2232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4946 SdHoareTripleChecker+Valid, 9374 SdHoareTripleChecker+Invalid, 4858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2232 IncrementalHoareTripleChecker+Valid, 2626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-21 11:24:15,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4946 Valid, 9374 Invalid, 4858 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2232 Valid, 2626 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-21 11:24:15,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20468 states. [2023-12-21 11:24:17,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20468 to 8231. [2023-12-21 11:24:17,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8231 states, 6038 states have (on average 1.312023848956608) internal successors, (7922), 6096 states have internal predecessors, (7922), 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 11:24:17,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8231 states to 8231 states and 10768 transitions. [2023-12-21 11:24:17,206 INFO L78 Accepts]: Start accepts. Automaton has 8231 states and 10768 transitions. Word has length 150 [2023-12-21 11:24:17,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:24:17,206 INFO L495 AbstractCegarLoop]: Abstraction has 8231 states and 10768 transitions. [2023-12-21 11:24:17,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.5) internal successors, (184), 14 states have internal predecessors, (184), 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 11:24:17,207 INFO L276 IsEmpty]: Start isEmpty. Operand 8231 states and 10768 transitions. [2023-12-21 11:24:17,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-21 11:24:17,220 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:24:17,221 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, 1] [2023-12-21 11:24:17,230 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-21 11:24:17,428 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 11:24:17,428 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:24:17,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:24:17,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1364021415, now seen corresponding path program 1 times [2023-12-21 11:24:17,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:24:17,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84899895] [2023-12-21 11:24:17,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:17,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:24:17,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:17,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:24:17,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:17,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:24:17,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:17,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-21 11:24:17,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:17,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-21 11:24:17,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:17,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 11:24:17,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:17,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 11:24:17,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:17,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 11:24:17,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:17,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 11:24:17,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:17,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 11:24:17,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:17,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-21 11:24:17,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:17,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 11:24:17,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:17,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-21 11:24:17,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:17,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-12-21 11:24:17,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:17,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-21 11:24:17,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:17,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-21 11:24:17,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:17,993 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 11:24:17,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:24:17,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84899895] [2023-12-21 11:24:17,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84899895] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:24:17,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496043600] [2023-12-21 11:24:17,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:17,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:24:17,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:24:17,996 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 11:24:18,016 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 11:24:18,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:18,178 INFO L262 TraceCheckSpWp]: Trace formula consists of 657 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 11:24:18,190 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:24:18,251 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 11:24:18,251 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:24:18,329 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 11:24:18,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496043600] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-21 11:24:18,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-21 11:24:18,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 7] total 14 [2023-12-21 11:24:18,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108701558] [2023-12-21 11:24:18,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:24:18,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 11:24:18,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:24:18,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 11:24:18,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-12-21 11:24:18,332 INFO L87 Difference]: Start difference. First operand 8231 states and 10768 transitions. Second operand has 5 states, 4 states have (on average 21.75) internal successors, (87), 5 states have internal predecessors, (87), 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 11:24:19,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:24:19,096 INFO L93 Difference]: Finished difference Result 13464 states and 17665 transitions. [2023-12-21 11:24:19,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 11:24:19,097 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 21.75) internal successors, (87), 5 states have internal predecessors, (87), 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 154 [2023-12-21 11:24:19,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:24:19,115 INFO L225 Difference]: With dead ends: 13464 [2023-12-21 11:24:19,115 INFO L226 Difference]: Without dead ends: 5420 [2023-12-21 11:24:19,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-12-21 11:24:19,130 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 0 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:24:19,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 730 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:24:19,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5420 states. [2023-12-21 11:24:19,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5420 to 5196. [2023-12-21 11:24:19,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5196 states, 3814 states have (on average 1.3112218143681174) internal successors, (5001), 3848 states have internal predecessors, (5001), 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 11:24:19,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5196 states to 5196 states and 6803 transitions. [2023-12-21 11:24:19,895 INFO L78 Accepts]: Start accepts. Automaton has 5196 states and 6803 transitions. Word has length 154 [2023-12-21 11:24:19,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:24:19,896 INFO L495 AbstractCegarLoop]: Abstraction has 5196 states and 6803 transitions. [2023-12-21 11:24:19,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 21.75) internal successors, (87), 5 states have internal predecessors, (87), 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 11:24:19,896 INFO L276 IsEmpty]: Start isEmpty. Operand 5196 states and 6803 transitions. [2023-12-21 11:24:19,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-21 11:24:19,905 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:24:19,905 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, 1] [2023-12-21 11:24:19,914 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 11:24:20,114 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 11:24:20,114 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:24:20,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:24:20,115 INFO L85 PathProgramCache]: Analyzing trace with hash -575446578, now seen corresponding path program 1 times [2023-12-21 11:24:20,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:24:20,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601869933] [2023-12-21 11:24:20,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:20,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:24:20,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:20,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:24:20,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:20,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:24:20,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:20,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-21 11:24:20,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:20,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-21 11:24:20,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:20,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 11:24:20,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:20,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 11:24:20,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:20,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 11:24:20,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:20,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 11:24:20,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:20,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 11:24:20,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:20,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-21 11:24:20,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:20,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-12-21 11:24:20,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:20,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-21 11:24:20,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:20,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-12-21 11:24:20,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:20,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-12-21 11:24:20,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:20,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-12-21 11:24:20,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:20,401 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 11:24:20,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:24:20,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601869933] [2023-12-21 11:24:20,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601869933] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:24:20,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767752703] [2023-12-21 11:24:20,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:20,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:24:20,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:24:20,402 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 11:24:20,422 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 11:24:20,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:20,572 INFO L262 TraceCheckSpWp]: Trace formula consists of 674 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-21 11:24:20,577 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:24:20,933 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 11:24:20,933 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:24:21,256 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 11:24:21,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767752703] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:24:21,257 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:24:21,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 8] total 21 [2023-12-21 11:24:21,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559143646] [2023-12-21 11:24:21,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:24:21,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-21 11:24:21,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:24:21,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-21 11:24:21,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2023-12-21 11:24:21,259 INFO L87 Difference]: Start difference. First operand 5196 states and 6803 transitions. Second operand has 21 states, 21 states have (on average 11.428571428571429) internal successors, (240), 21 states have internal predecessors, (240), 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 11:24:26,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:24:26,167 INFO L93 Difference]: Finished difference Result 14158 states and 18668 transitions. [2023-12-21 11:24:26,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2023-12-21 11:24:26,167 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 11.428571428571429) internal successors, (240), 21 states have internal predecessors, (240), 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 155 [2023-12-21 11:24:26,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:24:26,196 INFO L225 Difference]: With dead ends: 14158 [2023-12-21 11:24:26,196 INFO L226 Difference]: Without dead ends: 9203 [2023-12-21 11:24:26,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 521 GetRequests, 362 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10436 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=3228, Invalid=22532, Unknown=0, NotChecked=0, Total=25760 [2023-12-21 11:24:26,210 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 3621 mSDsluCounter, 2343 mSDsCounter, 0 mSdLazyCounter, 1410 mSolverCounterSat, 1208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3621 SdHoareTripleChecker+Valid, 2698 SdHoareTripleChecker+Invalid, 2618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1208 IncrementalHoareTripleChecker+Valid, 1410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-21 11:24:26,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3621 Valid, 2698 Invalid, 2618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1208 Valid, 1410 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-21 11:24:26,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9203 states. [2023-12-21 11:24:27,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9203 to 8199. [2023-12-21 11:24:27,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8199 states, 6090 states have (on average 1.3098522167487685) internal successors, (7977), 6140 states have internal predecessors, (7977), 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 11:24:27,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8199 states to 8199 states and 10693 transitions. [2023-12-21 11:24:27,143 INFO L78 Accepts]: Start accepts. Automaton has 8199 states and 10693 transitions. Word has length 155 [2023-12-21 11:24:27,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:24:27,144 INFO L495 AbstractCegarLoop]: Abstraction has 8199 states and 10693 transitions. [2023-12-21 11:24:27,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 11.428571428571429) internal successors, (240), 21 states have internal predecessors, (240), 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 11:24:27,144 INFO L276 IsEmpty]: Start isEmpty. Operand 8199 states and 10693 transitions. [2023-12-21 11:24:27,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-21 11:24:27,155 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:24:27,155 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, 1] [2023-12-21 11:24:27,166 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-21 11:24:27,366 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 11:24:27,367 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:24:27,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:24:27,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1536395995, now seen corresponding path program 1 times [2023-12-21 11:24:27,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:24:27,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786214787] [2023-12-21 11:24:27,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:27,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:24:27,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:28,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:24:28,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:28,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:24:28,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:28,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-21 11:24:28,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:28,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-21 11:24:28,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:28,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 11:24:28,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:28,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 11:24:28,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:28,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 11:24:28,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:28,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 11:24:28,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:28,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 11:24:28,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:28,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-21 11:24:28,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:28,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-12-21 11:24:28,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:28,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-21 11:24:28,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:28,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-12-21 11:24:28,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:28,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-12-21 11:24:28,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:28,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-12-21 11:24:28,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:28,045 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 11:24:28,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:24:28,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786214787] [2023-12-21 11:24:28,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786214787] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:24:28,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237881283] [2023-12-21 11:24:28,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:28,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:24:28,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:24:28,049 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 11:24:28,057 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 11:24:28,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:28,223 INFO L262 TraceCheckSpWp]: Trace formula consists of 672 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-21 11:24:28,226 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:24:28,840 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 11:24:28,840 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:24:29,531 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 11:24:29,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237881283] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:24:29,532 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:24:29,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 12] total 27 [2023-12-21 11:24:29,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25738585] [2023-12-21 11:24:29,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:24:29,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-21 11:24:29,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:24:29,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-21 11:24:29,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=580, Unknown=0, NotChecked=0, Total=702 [2023-12-21 11:24:29,534 INFO L87 Difference]: Start difference. First operand 8199 states and 10693 transitions. Second operand has 27 states, 27 states have (on average 8.518518518518519) internal successors, (230), 27 states have internal predecessors, (230), 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 11:24:33,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:24:33,879 INFO L93 Difference]: Finished difference Result 16345 states and 21379 transitions. [2023-12-21 11:24:33,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-12-21 11:24:33,880 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 8.518518518518519) internal successors, (230), 27 states have internal predecessors, (230), 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 155 [2023-12-21 11:24:33,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:24:33,905 INFO L225 Difference]: With dead ends: 16345 [2023-12-21 11:24:33,905 INFO L226 Difference]: Without dead ends: 8398 [2023-12-21 11:24:33,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1845 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1175, Invalid=4677, Unknown=0, NotChecked=0, Total=5852 [2023-12-21 11:24:33,919 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 3334 mSDsluCounter, 2302 mSDsCounter, 0 mSdLazyCounter, 1572 mSolverCounterSat, 1193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3334 SdHoareTripleChecker+Valid, 2574 SdHoareTripleChecker+Invalid, 2765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1193 IncrementalHoareTripleChecker+Valid, 1572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-21 11:24:33,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3334 Valid, 2574 Invalid, 2765 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1193 Valid, 1572 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-21 11:24:33,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8398 states. [2023-12-21 11:24:34,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8398 to 8255. [2023-12-21 11:24:34,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8255 states, 6136 states have (on average 1.3096479791395046) internal successors, (8036), 6186 states have internal predecessors, (8036), 1363 states have call successors, (1363), 755 states have call predecessors, (1363), 755 states have return successors, (1363), 1313 states have call predecessors, (1363), 1363 states have call successors, (1363) [2023-12-21 11:24:34,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8255 states to 8255 states and 10762 transitions. [2023-12-21 11:24:34,946 INFO L78 Accepts]: Start accepts. Automaton has 8255 states and 10762 transitions. Word has length 155 [2023-12-21 11:24:34,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:24:34,946 INFO L495 AbstractCegarLoop]: Abstraction has 8255 states and 10762 transitions. [2023-12-21 11:24:34,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 8.518518518518519) internal successors, (230), 27 states have internal predecessors, (230), 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 11:24:34,946 INFO L276 IsEmpty]: Start isEmpty. Operand 8255 states and 10762 transitions. [2023-12-21 11:24:34,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-21 11:24:34,952 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:24:34,953 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, 1] [2023-12-21 11:24:34,960 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 11:24:35,160 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 11:24:35,160 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:24:35,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:24:35,161 INFO L85 PathProgramCache]: Analyzing trace with hash -911509310, now seen corresponding path program 1 times [2023-12-21 11:24:35,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:24:35,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806697658] [2023-12-21 11:24:35,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:35,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:24:35,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:35,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:24:35,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:35,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:24:35,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:35,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-21 11:24:35,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:35,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-21 11:24:35,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:35,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-21 11:24:35,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:35,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 11:24:35,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:35,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 11:24:35,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:35,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 11:24:35,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:35,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-21 11:24:35,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:35,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-21 11:24:35,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:35,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 11:24:35,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:35,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-21 11:24:35,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:35,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-12-21 11:24:35,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:35,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-21 11:24:35,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:35,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-12-21 11:24:35,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:35,356 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 11:24:35,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:24:35,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806697658] [2023-12-21 11:24:35,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806697658] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:24:35,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448517779] [2023-12-21 11:24:35,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:35,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:24:35,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:24:35,361 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 11:24:35,380 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 11:24:35,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:35,524 INFO L262 TraceCheckSpWp]: Trace formula consists of 674 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-21 11:24:35,529 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:24:35,699 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 11:24:35,699 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:24:35,844 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 11:24:35,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448517779] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:24:35,845 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:24:35,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 10 [2023-12-21 11:24:35,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356631532] [2023-12-21 11:24:35,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:24:35,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 11:24:35,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:24:35,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 11:24:35,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-12-21 11:24:35,848 INFO L87 Difference]: Start difference. First operand 8255 states and 10762 transitions. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 9 states have internal predecessors, (143), 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 11:24:37,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:24:37,372 INFO L93 Difference]: Finished difference Result 20508 states and 26542 transitions. [2023-12-21 11:24:37,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-21 11:24:37,372 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 9 states have internal predecessors, (143), 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 157 [2023-12-21 11:24:37,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:24:37,411 INFO L225 Difference]: With dead ends: 20508 [2023-12-21 11:24:37,411 INFO L226 Difference]: Without dead ends: 12505 [2023-12-21 11:24:37,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 340 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 11:24:37,425 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 332 mSDsluCounter, 1978 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 2262 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 11:24:37,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 2262 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:24:37,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12505 states. [2023-12-21 11:24:38,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12505 to 10568. [2023-12-21 11:24:38,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10568 states, 7921 states have (on average 1.2986996591339477) internal successors, (10287), 7985 states have internal predecessors, (10287), 1674 states have call successors, (1674), 972 states have call predecessors, (1674), 972 states have return successors, (1674), 1610 states have call predecessors, (1674), 1674 states have call successors, (1674) [2023-12-21 11:24:38,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10568 states to 10568 states and 13635 transitions. [2023-12-21 11:24:38,844 INFO L78 Accepts]: Start accepts. Automaton has 10568 states and 13635 transitions. Word has length 157 [2023-12-21 11:24:38,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:24:38,844 INFO L495 AbstractCegarLoop]: Abstraction has 10568 states and 13635 transitions. [2023-12-21 11:24:38,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 9 states have internal predecessors, (143), 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 11:24:38,844 INFO L276 IsEmpty]: Start isEmpty. Operand 10568 states and 13635 transitions. [2023-12-21 11:24:38,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-12-21 11:24:38,851 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:24:38,851 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, 1] [2023-12-21 11:24:38,858 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-21 11:24:39,058 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 11:24:39,059 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:24:39,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:24:39,059 INFO L85 PathProgramCache]: Analyzing trace with hash 855437432, now seen corresponding path program 1 times [2023-12-21 11:24:39,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:24:39,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385062115] [2023-12-21 11:24:39,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:39,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:24:39,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:39,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:24:39,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:39,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:24:39,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:39,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-21 11:24:39,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:39,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-21 11:24:39,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:39,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-21 11:24:39,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:39,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 11:24:39,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:39,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 11:24:39,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:39,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 11:24:39,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:39,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-21 11:24:39,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:39,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-21 11:24:39,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:39,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 11:24:39,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:39,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-21 11:24:39,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:39,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-12-21 11:24:39,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:39,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-21 11:24:39,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:39,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-12-21 11:24:39,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:39,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-21 11:24:39,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:39,198 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 11:24:39,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:24:39,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385062115] [2023-12-21 11:24:39,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385062115] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:24:39,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:24:39,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:24:39,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322545928] [2023-12-21 11:24:39,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:24:39,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:24:39,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:24:39,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:24:39,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:24:39,201 INFO L87 Difference]: Start difference. First operand 10568 states and 13635 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 6 states have internal predecessors, (86), 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 11:24:41,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:24:41,389 INFO L93 Difference]: Finished difference Result 24939 states and 32679 transitions. [2023-12-21 11:24:41,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 11:24:41,389 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 6 states have internal predecessors, (86), 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 159 [2023-12-21 11:24:41,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:24:41,440 INFO L225 Difference]: With dead ends: 24939 [2023-12-21 11:24:41,440 INFO L226 Difference]: Without dead ends: 16900 [2023-12-21 11:24:41,454 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 11:24:41,454 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 263 mSDsluCounter, 1729 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 2120 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 11:24:41,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 2120 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:24:41,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16900 states. [2023-12-21 11:24:43,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16900 to 13529. [2023-12-21 11:24:43,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13529 states, 10054 states have (on average 1.2865526158742788) internal successors, (12935), 10148 states have internal predecessors, (12935), 2200 states have call successors, (2200), 1274 states have call predecessors, (2200), 1274 states have return successors, (2200), 2106 states have call predecessors, (2200), 2200 states have call successors, (2200) [2023-12-21 11:24:43,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13529 states to 13529 states and 17335 transitions. [2023-12-21 11:24:43,338 INFO L78 Accepts]: Start accepts. Automaton has 13529 states and 17335 transitions. Word has length 159 [2023-12-21 11:24:43,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:24:43,339 INFO L495 AbstractCegarLoop]: Abstraction has 13529 states and 17335 transitions. [2023-12-21 11:24:43,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 6 states have internal predecessors, (86), 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 11:24:43,339 INFO L276 IsEmpty]: Start isEmpty. Operand 13529 states and 17335 transitions. [2023-12-21 11:24:43,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-12-21 11:24:43,347 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:24:43,347 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, 1] [2023-12-21 11:24:43,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-12-21 11:24:43,348 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:24:43,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:24:43,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1698663015, now seen corresponding path program 1 times [2023-12-21 11:24:43,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:24:43,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404350788] [2023-12-21 11:24:43,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:43,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:24:43,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:43,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:24:43,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:43,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:24:43,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:43,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-21 11:24:43,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:43,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-21 11:24:43,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:43,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-21 11:24:43,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:43,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 11:24:43,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:43,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 11:24:43,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:43,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 11:24:43,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:43,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-21 11:24:43,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:43,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-21 11:24:43,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:43,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-12-21 11:24:43,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:43,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 11:24:43,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:43,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-21 11:24:43,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:43,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-12-21 11:24:43,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:43,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-12-21 11:24:43,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:43,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-21 11:24:43,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:43,788 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 27 proven. 3 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-12-21 11:24:43,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:24:43,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404350788] [2023-12-21 11:24:43,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404350788] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:24:43,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789680319] [2023-12-21 11:24:43,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:43,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:24:43,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:24:43,789 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 11:24:43,806 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 11:24:43,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:43,962 INFO L262 TraceCheckSpWp]: Trace formula consists of 688 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-21 11:24:43,965 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:24:44,073 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 11:24:44,074 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:24:44,176 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 11:24:44,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789680319] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:24:44,177 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:24:44,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 15 [2023-12-21 11:24:44,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066131927] [2023-12-21 11:24:44,177 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:24:44,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-21 11:24:44,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:24:44,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-21 11:24:44,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-12-21 11:24:44,179 INFO L87 Difference]: Start difference. First operand 13529 states and 17335 transitions. Second operand has 15 states, 15 states have (on average 11.4) internal successors, (171), 14 states have internal predecessors, (171), 6 states have call successors, (35), 4 states have call predecessors, (35), 6 states have return successors, (35), 7 states have call predecessors, (35), 6 states have call successors, (35) [2023-12-21 11:24:47,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:24:47,752 INFO L93 Difference]: Finished difference Result 30492 states and 40084 transitions. [2023-12-21 11:24:47,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-21 11:24:47,752 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 11.4) internal successors, (171), 14 states have internal predecessors, (171), 6 states have call successors, (35), 4 states have call predecessors, (35), 6 states have return successors, (35), 7 states have call predecessors, (35), 6 states have call successors, (35) Word has length 160 [2023-12-21 11:24:47,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:24:47,802 INFO L225 Difference]: With dead ends: 30492 [2023-12-21 11:24:47,803 INFO L226 Difference]: Without dead ends: 17131 [2023-12-21 11:24:47,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 357 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=259, Invalid=1463, Unknown=0, NotChecked=0, Total=1722 [2023-12-21 11:24:47,823 INFO L413 NwaCegarLoop]: 446 mSDtfsCounter, 1100 mSDsluCounter, 3985 mSDsCounter, 0 mSdLazyCounter, 1635 mSolverCounterSat, 388 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1100 SdHoareTripleChecker+Valid, 4431 SdHoareTripleChecker+Invalid, 2023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 388 IncrementalHoareTripleChecker+Valid, 1635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 11:24:47,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1100 Valid, 4431 Invalid, 2023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [388 Valid, 1635 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 11:24:47,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17131 states. [2023-12-21 11:24:49,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17131 to 13571. [2023-12-21 11:24:49,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13571 states, 10078 states have (on average 1.2854733081960708) internal successors, (12955), 10174 states have internal predecessors, (12955), 2211 states have call successors, (2211), 1281 states have call predecessors, (2211), 1281 states have return successors, (2211), 2115 states have call predecessors, (2211), 2211 states have call successors, (2211) [2023-12-21 11:24:49,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13571 states to 13571 states and 17377 transitions. [2023-12-21 11:24:49,889 INFO L78 Accepts]: Start accepts. Automaton has 13571 states and 17377 transitions. Word has length 160 [2023-12-21 11:24:49,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:24:49,889 INFO L495 AbstractCegarLoop]: Abstraction has 13571 states and 17377 transitions. [2023-12-21 11:24:49,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 11.4) internal successors, (171), 14 states have internal predecessors, (171), 6 states have call successors, (35), 4 states have call predecessors, (35), 6 states have return successors, (35), 7 states have call predecessors, (35), 6 states have call successors, (35) [2023-12-21 11:24:49,889 INFO L276 IsEmpty]: Start isEmpty. Operand 13571 states and 17377 transitions. [2023-12-21 11:24:49,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-12-21 11:24:49,897 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:24:49,897 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:24:49,908 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-21 11:24:50,108 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 11:24:50,109 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:24:50,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:24:50,109 INFO L85 PathProgramCache]: Analyzing trace with hash -2025854905, now seen corresponding path program 1 times [2023-12-21 11:24:50,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:24:50,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100512634] [2023-12-21 11:24:50,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:50,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:24:50,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:50,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:24:50,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:50,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:24:50,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:50,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-21 11:24:50,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:50,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-21 11:24:50,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:50,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-21 11:24:50,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:50,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 11:24:50,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:50,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 11:24:50,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:50,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 11:24:50,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:50,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 11:24:50,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:50,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-21 11:24:50,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:50,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-21 11:24:50,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:50,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-21 11:24:50,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:50,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-21 11:24:50,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:50,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-21 11:24:50,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:50,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-12-21 11:24:50,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:50,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-12-21 11:24:50,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:50,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-12-21 11:24:50,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:50,785 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 24 proven. 4 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2023-12-21 11:24:50,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:24:50,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100512634] [2023-12-21 11:24:50,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100512634] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:24:50,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254061298] [2023-12-21 11:24:50,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:50,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:24:50,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:24:50,787 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 11:24:50,806 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 11:24:50,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:50,962 INFO L262 TraceCheckSpWp]: Trace formula consists of 707 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-21 11:24:50,966 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:24:51,104 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 60 proven. 4 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-21 11:24:51,105 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:24:51,257 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 17 proven. 8 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2023-12-21 11:24:51,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254061298] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:24:51,258 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:24:51,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 15 [2023-12-21 11:24:51,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241256581] [2023-12-21 11:24:51,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:24:51,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-21 11:24:51,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:24:51,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-21 11:24:51,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2023-12-21 11:24:51,260 INFO L87 Difference]: Start difference. First operand 13571 states and 17377 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 11:24:55,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:24:55,388 INFO L93 Difference]: Finished difference Result 30304 states and 39798 transitions. [2023-12-21 11:24:55,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-12-21 11:24:55,389 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 169 [2023-12-21 11:24:55,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:24:55,434 INFO L225 Difference]: With dead ends: 30304 [2023-12-21 11:24:55,434 INFO L226 Difference]: Without dead ends: 16901 [2023-12-21 11:24:55,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 374 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=292, Invalid=1778, Unknown=0, NotChecked=0, Total=2070 [2023-12-21 11:24:55,458 INFO L413 NwaCegarLoop]: 460 mSDtfsCounter, 1069 mSDsluCounter, 4092 mSDsCounter, 0 mSdLazyCounter, 1777 mSolverCounterSat, 380 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1069 SdHoareTripleChecker+Valid, 4552 SdHoareTripleChecker+Invalid, 2157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 380 IncrementalHoareTripleChecker+Valid, 1777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:24:55,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1069 Valid, 4552 Invalid, 2157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [380 Valid, 1777 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-21 11:24:55,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16901 states. [2023-12-21 11:24:57,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16901 to 13598. [2023-12-21 11:24:57,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13598 states, 10103 states have (on average 1.2849648619222014) internal successors, (12982), 10199 states have internal predecessors, (12982), 2212 states have call successors, (2212), 1282 states have call predecessors, (2212), 1282 states have return successors, (2212), 2116 states have call predecessors, (2212), 2212 states have call successors, (2212) [2023-12-21 11:24:57,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13598 states to 13598 states and 17406 transitions. [2023-12-21 11:24:57,545 INFO L78 Accepts]: Start accepts. Automaton has 13598 states and 17406 transitions. Word has length 169 [2023-12-21 11:24:57,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:24:57,546 INFO L495 AbstractCegarLoop]: Abstraction has 13598 states and 17406 transitions. [2023-12-21 11:24:57,546 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 11:24:57,546 INFO L276 IsEmpty]: Start isEmpty. Operand 13598 states and 17406 transitions. [2023-12-21 11:24:57,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-12-21 11:24:57,551 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:24:57,551 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:24:57,558 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 11:24:57,752 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 11:24:57,753 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:24:57,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:24:57,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1488272410, now seen corresponding path program 1 times [2023-12-21 11:24:57,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:24:57,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056096085] [2023-12-21 11:24:57,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:57,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:24:57,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:57,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:24:57,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:57,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:24:57,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:57,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-21 11:24:57,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:57,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-21 11:24:57,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:57,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-21 11:24:57,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:57,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 11:24:57,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:57,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 11:24:57,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:57,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 11:24:57,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:57,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-21 11:24:57,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:58,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 11:24:58,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:58,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-21 11:24:58,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:58,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-21 11:24:58,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:58,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-21 11:24:58,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:58,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-21 11:24:58,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:58,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-12-21 11:24:58,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:58,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-12-21 11:24:58,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:58,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-12-21 11:24:58,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:58,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-12-21 11:24:58,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:58,019 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 19 proven. 11 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2023-12-21 11:24:58,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:24:58,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056096085] [2023-12-21 11:24:58,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056096085] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:24:58,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473597141] [2023-12-21 11:24:58,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:58,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:24:58,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:24:58,022 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 11:24:58,044 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 11:24:58,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:58,200 INFO L262 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-21 11:24:58,204 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:24:58,314 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-12-21 11:24:58,314 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 11:24:58,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473597141] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:24:58,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 11:24:58,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2023-12-21 11:24:58,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333884164] [2023-12-21 11:24:58,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:24:58,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:24:58,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:24:58,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:24:58,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-12-21 11:24:58,317 INFO L87 Difference]: Start difference. First operand 13598 states and 17406 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 11:25:00,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:25:00,989 INFO L93 Difference]: Finished difference Result 29299 states and 38377 transitions. [2023-12-21 11:25:00,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 11:25:00,990 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 11:25:00,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:25:01,050 INFO L225 Difference]: With dead ends: 29299 [2023-12-21 11:25:01,051 INFO L226 Difference]: Without dead ends: 16270 [2023-12-21 11:25:01,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2023-12-21 11:25:01,073 INFO L413 NwaCegarLoop]: 410 mSDtfsCounter, 503 mSDsluCounter, 1224 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 503 SdHoareTripleChecker+Valid, 1634 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 11:25:01,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [503 Valid, 1634 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 11:25:01,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16270 states. [2023-12-21 11:25:03,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16270 to 13598. [2023-12-21 11:25:03,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13598 states, 10103 states have (on average 1.2772443828565772) internal successors, (12904), 10199 states have internal predecessors, (12904), 2212 states have call successors, (2212), 1282 states have call predecessors, (2212), 1282 states have return successors, (2212), 2116 states have call predecessors, (2212), 2212 states have call successors, (2212) [2023-12-21 11:25:03,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13598 states to 13598 states and 17328 transitions. [2023-12-21 11:25:03,353 INFO L78 Accepts]: Start accepts. Automaton has 13598 states and 17328 transitions. Word has length 177 [2023-12-21 11:25:03,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:25:03,354 INFO L495 AbstractCegarLoop]: Abstraction has 13598 states and 17328 transitions. [2023-12-21 11:25:03,354 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 11:25:03,355 INFO L276 IsEmpty]: Start isEmpty. Operand 13598 states and 17328 transitions. [2023-12-21 11:25:03,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2023-12-21 11:25:03,363 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:25:03,363 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, 1] [2023-12-21 11:25:03,373 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 11:25:03,571 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 11:25:03,571 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:25:03,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:25:03,572 INFO L85 PathProgramCache]: Analyzing trace with hash -528368024, now seen corresponding path program 1 times [2023-12-21 11:25:03,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:25:03,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086585003] [2023-12-21 11:25:03,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:25:03,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:25:03,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:04,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:25:04,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:04,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:25:04,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:04,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-21 11:25:04,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:04,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-21 11:25:04,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:04,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 11:25:04,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:04,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 11:25:04,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:04,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 11:25:04,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:04,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 11:25:04,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:04,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 11:25:04,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:04,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 11:25:04,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:04,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 11:25:04,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:04,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-21 11:25:04,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:04,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-21 11:25:04,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:04,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-21 11:25:04,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:04,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-12-21 11:25:04,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:04,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-12-21 11:25:04,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:04,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2023-12-21 11:25:04,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:04,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2023-12-21 11:25:04,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:04,243 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 11:25:04,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:25:04,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086585003] [2023-12-21 11:25:04,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086585003] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:25:04,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618080075] [2023-12-21 11:25:04,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:25:04,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:25:04,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:25:04,244 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 11:25:04,263 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 11:25:04,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:04,423 INFO L262 TraceCheckSpWp]: Trace formula consists of 729 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 11:25:04,426 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:25:04,660 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 11:25:04,660 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:25:04,840 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 11:25:04,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618080075] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:25:04,840 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:25:04,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 19 [2023-12-21 11:25:04,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765841868] [2023-12-21 11:25:04,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:25:04,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-21 11:25:04,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:25:04,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-21 11:25:04,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2023-12-21 11:25:04,842 INFO L87 Difference]: Start difference. First operand 13598 states and 17328 transitions. Second operand has 19 states, 19 states have (on average 11.842105263157896) internal successors, (225), 18 states have internal predecessors, (225), 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 11:25:09,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:25:09,347 INFO L93 Difference]: Finished difference Result 25886 states and 33044 transitions. [2023-12-21 11:25:09,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-12-21 11:25:09,348 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 11.842105263157896) internal successors, (225), 18 states have internal predecessors, (225), 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 180 [2023-12-21 11:25:09,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:25:09,384 INFO L225 Difference]: With dead ends: 25886 [2023-12-21 11:25:09,384 INFO L226 Difference]: Without dead ends: 14338 [2023-12-21 11:25:09,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 399 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 11:25:09,402 INFO L413 NwaCegarLoop]: 560 mSDtfsCounter, 1766 mSDsluCounter, 4092 mSDsCounter, 0 mSdLazyCounter, 2123 mSolverCounterSat, 618 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1766 SdHoareTripleChecker+Valid, 4652 SdHoareTripleChecker+Invalid, 2741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 618 IncrementalHoareTripleChecker+Valid, 2123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-21 11:25:09,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1766 Valid, 4652 Invalid, 2741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [618 Valid, 2123 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-21 11:25:09,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14338 states. [2023-12-21 11:25:11,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14338 to 13612. [2023-12-21 11:25:11,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13612 states, 10117 states have (on average 1.272709301176238) internal successors, (12876), 10213 states have internal predecessors, (12876), 2212 states have call successors, (2212), 1282 states have call predecessors, (2212), 1282 states have return successors, (2212), 2116 states have call predecessors, (2212), 2212 states have call successors, (2212) [2023-12-21 11:25:11,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13612 states to 13612 states and 17300 transitions. [2023-12-21 11:25:11,438 INFO L78 Accepts]: Start accepts. Automaton has 13612 states and 17300 transitions. Word has length 180 [2023-12-21 11:25:11,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:25:11,439 INFO L495 AbstractCegarLoop]: Abstraction has 13612 states and 17300 transitions. [2023-12-21 11:25:11,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 11.842105263157896) internal successors, (225), 18 states have internal predecessors, (225), 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 11:25:11,439 INFO L276 IsEmpty]: Start isEmpty. Operand 13612 states and 17300 transitions. [2023-12-21 11:25:11,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-12-21 11:25:11,446 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:25:11,446 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, 1] [2023-12-21 11:25:11,454 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-21 11:25:11,653 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 11:25:11,654 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:25:11,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:25:11,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1176417596, now seen corresponding path program 1 times [2023-12-21 11:25:11,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:25:11,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430838588] [2023-12-21 11:25:11,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:25:11,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:25:11,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:11,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:25:11,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:11,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:25:11,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:11,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-21 11:25:11,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:11,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-21 11:25:11,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:11,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 11:25:11,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:11,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 11:25:11,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:11,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 11:25:11,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:11,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 11:25:11,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:11,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 11:25:11,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:11,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 11:25:11,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:11,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 11:25:11,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:11,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-21 11:25:11,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:11,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-12-21 11:25:11,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:11,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-21 11:25:11,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:11,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-12-21 11:25:11,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:11,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-12-21 11:25:11,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:11,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-12-21 11:25:11,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:11,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2023-12-21 11:25:11,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:11,945 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 11:25:11,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:25:11,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430838588] [2023-12-21 11:25:11,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430838588] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:25:11,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:25:11,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:25:11,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383678878] [2023-12-21 11:25:11,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:25:11,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:25:11,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:25:11,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:25:11,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:25:11,947 INFO L87 Difference]: Start difference. First operand 13612 states and 17300 transitions. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 6 states have internal predecessors, (106), 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 11:25:14,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:25:14,562 INFO L93 Difference]: Finished difference Result 25261 states and 32784 transitions. [2023-12-21 11:25:14,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 11:25:14,562 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 6 states have internal predecessors, (106), 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 181 [2023-12-21 11:25:14,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:25:14,594 INFO L225 Difference]: With dead ends: 25261 [2023-12-21 11:25:14,594 INFO L226 Difference]: Without dead ends: 15062 [2023-12-21 11:25:14,608 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 11:25:14,608 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 485 mSDsluCounter, 1313 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 1718 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 11:25:14,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 1718 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 11:25:14,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15062 states. [2023-12-21 11:25:16,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15062 to 13605. [2023-12-21 11:25:16,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13605 states, 10110 states have (on average 1.271513353115727) internal successors, (12855), 10206 states have internal predecessors, (12855), 2212 states have call successors, (2212), 1282 states have call predecessors, (2212), 1282 states have return successors, (2212), 2116 states have call predecessors, (2212), 2212 states have call successors, (2212) [2023-12-21 11:25:16,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13605 states to 13605 states and 17279 transitions. [2023-12-21 11:25:16,797 INFO L78 Accepts]: Start accepts. Automaton has 13605 states and 17279 transitions. Word has length 181 [2023-12-21 11:25:16,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:25:16,797 INFO L495 AbstractCegarLoop]: Abstraction has 13605 states and 17279 transitions. [2023-12-21 11:25:16,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 6 states have internal predecessors, (106), 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 11:25:16,797 INFO L276 IsEmpty]: Start isEmpty. Operand 13605 states and 17279 transitions. [2023-12-21 11:25:16,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-12-21 11:25:16,803 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:25:16,804 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 11:25:16,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-12-21 11:25:16,804 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:25:16,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:25:16,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1628151172, now seen corresponding path program 1 times [2023-12-21 11:25:16,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:25:16,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248064521] [2023-12-21 11:25:16,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:25:16,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:25:16,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:17,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:25:17,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:17,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:25:17,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:17,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-21 11:25:17,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:17,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-21 11:25:17,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:17,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 11:25:17,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:17,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 11:25:17,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:17,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 11:25:17,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:17,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 11:25:17,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:17,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 11:25:17,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:17,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 11:25:17,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:17,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 11:25:17,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:17,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-21 11:25:17,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:17,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-21 11:25:17,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:17,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-21 11:25:17,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:17,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-12-21 11:25:17,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:17,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-12-21 11:25:17,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:17,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-12-21 11:25:17,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:17,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2023-12-21 11:25:17,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:17,261 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 11:25:17,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:25:17,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248064521] [2023-12-21 11:25:17,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248064521] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:25:17,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234904698] [2023-12-21 11:25:17,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:25:17,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:25:17,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:25:17,263 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 11:25:17,283 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 11:25:17,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:17,432 INFO L262 TraceCheckSpWp]: Trace formula consists of 732 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-21 11:25:17,441 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:25:17,904 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 11:25:17,904 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:25:18,333 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 11:25:18,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234904698] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:25:18,334 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:25:18,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 9] total 28 [2023-12-21 11:25:18,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912002052] [2023-12-21 11:25:18,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:25:18,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-21 11:25:18,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:25:18,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-21 11:25:18,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=616, Unknown=0, NotChecked=0, Total=756 [2023-12-21 11:25:18,336 INFO L87 Difference]: Start difference. First operand 13605 states and 17279 transitions. Second operand has 28 states, 28 states have (on average 9.714285714285714) internal successors, (272), 28 states have internal predecessors, (272), 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 11:25:21,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:25:21,871 INFO L93 Difference]: Finished difference Result 27714 states and 35188 transitions. [2023-12-21 11:25:21,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-21 11:25:21,872 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 9.714285714285714) internal successors, (272), 28 states have internal predecessors, (272), 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 182 [2023-12-21 11:25:21,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:25:21,898 INFO L225 Difference]: With dead ends: 27714 [2023-12-21 11:25:21,899 INFO L226 Difference]: Without dead ends: 15263 [2023-12-21 11:25:21,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 914 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=547, Invalid=2645, Unknown=0, NotChecked=0, Total=3192 [2023-12-21 11:25:21,912 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 1572 mSDsluCounter, 2505 mSDsCounter, 0 mSdLazyCounter, 1861 mSolverCounterSat, 501 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1572 SdHoareTripleChecker+Valid, 2841 SdHoareTripleChecker+Invalid, 2362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 501 IncrementalHoareTripleChecker+Valid, 1861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 11:25:21,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1572 Valid, 2841 Invalid, 2362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [501 Valid, 1861 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 11:25:21,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15263 states. [2023-12-21 11:25:24,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15263 to 14979. [2023-12-21 11:25:24,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14979 states, 11130 states have (on average 1.2654088050314465) internal successors, (14084), 11238 states have internal predecessors, (14084), 2429 states have call successors, (2429), 1419 states have call predecessors, (2429), 1419 states have return successors, (2429), 2321 states have call predecessors, (2429), 2429 states have call successors, (2429) [2023-12-21 11:25:24,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14979 states to 14979 states and 18942 transitions. [2023-12-21 11:25:24,272 INFO L78 Accepts]: Start accepts. Automaton has 14979 states and 18942 transitions. Word has length 182 [2023-12-21 11:25:24,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:25:24,273 INFO L495 AbstractCegarLoop]: Abstraction has 14979 states and 18942 transitions. [2023-12-21 11:25:24,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 9.714285714285714) internal successors, (272), 28 states have internal predecessors, (272), 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 11:25:24,273 INFO L276 IsEmpty]: Start isEmpty. Operand 14979 states and 18942 transitions. [2023-12-21 11:25:24,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-12-21 11:25:24,280 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:25:24,280 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 11:25:24,286 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 11:25:24,481 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 11:25:24,481 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:25:24,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:25:24,482 INFO L85 PathProgramCache]: Analyzing trace with hash -321691567, now seen corresponding path program 1 times [2023-12-21 11:25:24,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:25:24,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560609417] [2023-12-21 11:25:24,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:25:24,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:25:24,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:24,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:25:24,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:24,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:25:24,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:24,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-21 11:25:24,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:24,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-21 11:25:24,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:24,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 11:25:24,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:24,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 11:25:24,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:24,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 11:25:24,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:24,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 11:25:24,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:24,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 11:25:24,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:24,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 11:25:24,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:24,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 11:25:24,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:24,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-21 11:25:24,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:24,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-21 11:25:24,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:24,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-12-21 11:25:24,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:24,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-21 11:25:24,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:24,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-12-21 11:25:24,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:24,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2023-12-21 11:25:24,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:24,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2023-12-21 11:25:24,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:24,584 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 11:25:24,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:25:24,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560609417] [2023-12-21 11:25:24,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560609417] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:25:24,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:25:24,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:25:24,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489334777] [2023-12-21 11:25:24,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:25:24,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:25:24,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:25:24,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:25:24,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:25:24,586 INFO L87 Difference]: Start difference. First operand 14979 states and 18942 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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 11:25:27,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:25:27,027 INFO L93 Difference]: Finished difference Result 27328 states and 34882 transitions. [2023-12-21 11:25:27,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 11:25:27,028 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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 183 [2023-12-21 11:25:27,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:25:27,059 INFO L225 Difference]: With dead ends: 27328 [2023-12-21 11:25:27,060 INFO L226 Difference]: Without dead ends: 16398 [2023-12-21 11:25:27,073 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 11:25:27,074 INFO L413 NwaCegarLoop]: 401 mSDtfsCounter, 205 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 1027 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 11:25:27,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 1027 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:25:27,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16398 states. [2023-12-21 11:25:29,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16398 to 15504. [2023-12-21 11:25:29,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15504 states, 11507 states have (on average 1.2627096549926131) internal successors, (14530), 11623 states have internal predecessors, (14530), 2520 states have call successors, (2520), 1476 states have call predecessors, (2520), 1476 states have return successors, (2520), 2404 states have call predecessors, (2520), 2520 states have call successors, (2520) [2023-12-21 11:25:29,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15504 states to 15504 states and 19570 transitions. [2023-12-21 11:25:29,447 INFO L78 Accepts]: Start accepts. Automaton has 15504 states and 19570 transitions. Word has length 183 [2023-12-21 11:25:29,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:25:29,448 INFO L495 AbstractCegarLoop]: Abstraction has 15504 states and 19570 transitions. [2023-12-21 11:25:29,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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 11:25:29,448 INFO L276 IsEmpty]: Start isEmpty. Operand 15504 states and 19570 transitions. [2023-12-21 11:25:29,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2023-12-21 11:25:29,454 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:25:29,454 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, 1] [2023-12-21 11:25:29,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-12-21 11:25:29,454 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:25:29,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:25:29,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1488165752, now seen corresponding path program 1 times [2023-12-21 11:25:29,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:25:29,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263394622] [2023-12-21 11:25:29,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:25:29,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:25:29,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:30,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:25:30,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:30,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:25:30,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:30,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-21 11:25:30,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:30,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-21 11:25:30,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:30,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 11:25:30,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:30,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 11:25:30,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:30,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 11:25:30,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:30,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 11:25:30,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:30,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 11:25:30,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:30,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 11:25:30,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:30,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 11:25:30,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:30,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-12-21 11:25:30,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:30,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-12-21 11:25:30,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:30,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-12-21 11:25:30,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:30,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-21 11:25:30,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:30,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-12-21 11:25:30,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:30,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2023-12-21 11:25:30,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:30,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2023-12-21 11:25:30,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:30,385 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 11:25:30,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:25:30,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263394622] [2023-12-21 11:25:30,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263394622] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:25:30,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414190487] [2023-12-21 11:25:30,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:25:30,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:25:30,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:25:30,389 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 11:25:30,406 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 11:25:30,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:30,540 INFO L262 TraceCheckSpWp]: Trace formula consists of 733 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-21 11:25:30,544 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:25:31,180 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 11:25:31,180 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:25:32,197 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 11:25:32,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414190487] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:25:32,197 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:25:32,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 12] total 25 [2023-12-21 11:25:32,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102616877] [2023-12-21 11:25:32,197 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:25:32,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-21 11:25:32,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:25:32,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-21 11:25:32,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=487, Unknown=0, NotChecked=0, Total=600 [2023-12-21 11:25:32,199 INFO L87 Difference]: Start difference. First operand 15504 states and 19570 transitions. Second operand has 25 states, 25 states have (on average 10.48) internal successors, (262), 25 states have internal predecessors, (262), 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 11:25:36,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:25:36,173 INFO L93 Difference]: Finished difference Result 28078 states and 35686 transitions. [2023-12-21 11:25:36,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-21 11:25:36,174 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 10.48) internal successors, (262), 25 states have internal predecessors, (262), 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 184 [2023-12-21 11:25:36,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:25:36,202 INFO L225 Difference]: With dead ends: 28078 [2023-12-21 11:25:36,202 INFO L226 Difference]: Without dead ends: 15436 [2023-12-21 11:25:36,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 391 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 587 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=622, Invalid=2030, Unknown=0, NotChecked=0, Total=2652 [2023-12-21 11:25:36,216 INFO L413 NwaCegarLoop]: 363 mSDtfsCounter, 1867 mSDsluCounter, 2205 mSDsCounter, 0 mSdLazyCounter, 1548 mSolverCounterSat, 607 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1867 SdHoareTripleChecker+Valid, 2568 SdHoareTripleChecker+Invalid, 2155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 607 IncrementalHoareTripleChecker+Valid, 1548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 11:25:36,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1867 Valid, 2568 Invalid, 2155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [607 Valid, 1548 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 11:25:36,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15436 states. [2023-12-21 11:25:38,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15436 to 15348. [2023-12-21 11:25:38,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15348 states, 11403 states have (on average 1.2643164079628169) internal successors, (14417), 11512 states have internal predecessors, (14417), 2479 states have call successors, (2479), 1465 states have call predecessors, (2479), 1465 states have return successors, (2479), 2370 states have call predecessors, (2479), 2479 states have call successors, (2479) [2023-12-21 11:25:38,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15348 states to 15348 states and 19375 transitions. [2023-12-21 11:25:38,715 INFO L78 Accepts]: Start accepts. Automaton has 15348 states and 19375 transitions. Word has length 184 [2023-12-21 11:25:38,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:25:38,715 INFO L495 AbstractCegarLoop]: Abstraction has 15348 states and 19375 transitions. [2023-12-21 11:25:38,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 10.48) internal successors, (262), 25 states have internal predecessors, (262), 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 11:25:38,715 INFO L276 IsEmpty]: Start isEmpty. Operand 15348 states and 19375 transitions. [2023-12-21 11:25:38,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2023-12-21 11:25:38,721 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:25:38,721 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:25:38,726 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-21 11:25:38,921 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 11:25:38,921 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:25:38,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:25:38,922 INFO L85 PathProgramCache]: Analyzing trace with hash -739426666, now seen corresponding path program 1 times [2023-12-21 11:25:38,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:25:38,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695795749] [2023-12-21 11:25:38,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:25:38,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:25:38,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:39,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:25:39,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:39,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:25:39,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:39,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-21 11:25:39,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:39,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-21 11:25:39,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:39,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-21 11:25:39,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:39,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 11:25:39,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:39,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 11:25:39,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:39,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 11:25:39,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:39,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-21 11:25:39,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:39,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 11:25:39,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:39,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-21 11:25:39,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:39,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-12-21 11:25:39,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:39,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-12-21 11:25:39,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:39,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-21 11:25:39,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:39,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-12-21 11:25:39,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:39,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-12-21 11:25:39,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:39,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-12-21 11:25:39,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:39,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-12-21 11:25:39,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:39,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2023-12-21 11:25:39,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:39,317 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 27 proven. 3 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2023-12-21 11:25:39,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:25:39,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695795749] [2023-12-21 11:25:39,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695795749] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:25:39,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959103383] [2023-12-21 11:25:39,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:25:39,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:25:39,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:25:39,321 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 11:25:39,345 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 11:25:39,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:39,487 INFO L262 TraceCheckSpWp]: Trace formula consists of 743 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-21 11:25:39,492 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:25:39,614 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 88 proven. 4 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-12-21 11:25:39,614 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:25:39,768 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 19 proven. 4 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2023-12-21 11:25:39,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [959103383] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:25:39,769 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:25:39,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2023-12-21 11:25:39,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167529955] [2023-12-21 11:25:39,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:25:39,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-21 11:25:39,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:25:39,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-21 11:25:39,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-12-21 11:25:39,771 INFO L87 Difference]: Start difference. First operand 15348 states and 19375 transitions. Second operand has 14 states, 14 states have (on average 14.0) internal successors, (196), 13 states have internal predecessors, (196), 6 states have call successors, (44), 4 states have call predecessors, (44), 6 states have return successors, (44), 7 states have call predecessors, (44), 6 states have call successors, (44) [2023-12-21 11:25:44,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:25:44,735 INFO L93 Difference]: Finished difference Result 35683 states and 46097 transitions. [2023-12-21 11:25:44,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-12-21 11:25:44,736 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 14.0) internal successors, (196), 13 states have internal predecessors, (196), 6 states have call successors, (44), 4 states have call predecessors, (44), 6 states have return successors, (44), 7 states have call predecessors, (44), 6 states have call successors, (44) Word has length 185 [2023-12-21 11:25:44,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:25:44,783 INFO L225 Difference]: With dead ends: 35683 [2023-12-21 11:25:44,783 INFO L226 Difference]: Without dead ends: 20810 [2023-12-21 11:25:44,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 408 SyntacticMatches, 4 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 537 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=324, Invalid=1838, Unknown=0, NotChecked=0, Total=2162 [2023-12-21 11:25:44,799 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 1270 mSDsluCounter, 3182 mSDsCounter, 0 mSdLazyCounter, 1483 mSolverCounterSat, 336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1274 SdHoareTripleChecker+Valid, 3625 SdHoareTripleChecker+Invalid, 1819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 336 IncrementalHoareTripleChecker+Valid, 1483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 11:25:44,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1274 Valid, 3625 Invalid, 1819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [336 Valid, 1483 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 11:25:44,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20810 states. [2023-12-21 11:25:47,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20810 to 16830. [2023-12-21 11:25:47,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16830 states, 12473 states have (on average 1.2678585745209652) internal successors, (15814), 12596 states have internal predecessors, (15814), 2745 states have call successors, (2745), 1611 states have call predecessors, (2745), 1611 states have return successors, (2745), 2622 states have call predecessors, (2745), 2745 states have call successors, (2745) [2023-12-21 11:25:47,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16830 states to 16830 states and 21304 transitions. [2023-12-21 11:25:47,744 INFO L78 Accepts]: Start accepts. Automaton has 16830 states and 21304 transitions. Word has length 185 [2023-12-21 11:25:47,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:25:47,744 INFO L495 AbstractCegarLoop]: Abstraction has 16830 states and 21304 transitions. [2023-12-21 11:25:47,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 14.0) internal successors, (196), 13 states have internal predecessors, (196), 6 states have call successors, (44), 4 states have call predecessors, (44), 6 states have return successors, (44), 7 states have call predecessors, (44), 6 states have call successors, (44) [2023-12-21 11:25:47,744 INFO L276 IsEmpty]: Start isEmpty. Operand 16830 states and 21304 transitions. [2023-12-21 11:25:47,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-12-21 11:25:47,748 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:25:47,748 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, 1] [2023-12-21 11:25:47,757 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 11:25:47,954 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 11:25:47,955 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:25:47,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:25:47,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1614116277, now seen corresponding path program 1 times [2023-12-21 11:25:47,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:25:47,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022253701] [2023-12-21 11:25:47,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:25:47,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:25:47,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:48,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:25:48,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:48,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:25:48,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:48,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-21 11:25:48,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:48,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-21 11:25:48,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:48,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 11:25:48,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:48,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 11:25:48,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:48,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 11:25:48,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:48,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 11:25:48,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:48,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 11:25:48,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:48,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 11:25:48,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:48,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 11:25:48,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:48,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-21 11:25:48,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:48,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-12-21 11:25:48,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:48,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-21 11:25:48,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:48,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-12-21 11:25:48,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:48,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-12-21 11:25:48,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:48,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-12-21 11:25:48,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:48,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2023-12-21 11:25:48,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:48,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2023-12-21 11:25:48,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:48,259 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 11:25:48,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:25:48,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022253701] [2023-12-21 11:25:48,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022253701] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:25:48,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529717223] [2023-12-21 11:25:48,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:25:48,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:25:48,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:25:48,261 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 11:25:48,279 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 11:25:48,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:48,437 INFO L262 TraceCheckSpWp]: Trace formula consists of 746 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 11:25:48,441 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:25:48,671 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 11:25:48,671 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:25:48,826 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 11:25:48,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529717223] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:25:48,827 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:25:48,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2023-12-21 11:25:48,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140421125] [2023-12-21 11:25:48,827 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:25:48,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-21 11:25:48,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:25:48,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-21 11:25:48,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2023-12-21 11:25:48,828 INFO L87 Difference]: Start difference. First operand 16830 states and 21304 transitions. Second operand has 17 states, 17 states have (on average 13.176470588235293) internal successors, (224), 15 states have internal predecessors, (224), 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 11:25:56,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:25:56,238 INFO L93 Difference]: Finished difference Result 41055 states and 52852 transitions. [2023-12-21 11:25:56,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2023-12-21 11:25:56,238 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 13.176470588235293) internal successors, (224), 15 states have internal predecessors, (224), 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 189 [2023-12-21 11:25:56,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:25:56,296 INFO L225 Difference]: With dead ends: 41055 [2023-12-21 11:25:56,297 INFO L226 Difference]: Without dead ends: 26923 [2023-12-21 11:25:56,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 420 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1674 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=963, Invalid=4737, Unknown=0, NotChecked=0, Total=5700 [2023-12-21 11:25:56,313 INFO L413 NwaCegarLoop]: 577 mSDtfsCounter, 2606 mSDsluCounter, 5652 mSDsCounter, 0 mSdLazyCounter, 1693 mSolverCounterSat, 1081 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2606 SdHoareTripleChecker+Valid, 6229 SdHoareTripleChecker+Invalid, 2774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1081 IncrementalHoareTripleChecker+Valid, 1693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-21 11:25:56,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2606 Valid, 6229 Invalid, 2774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1081 Valid, 1693 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-21 11:25:56,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26923 states. [2023-12-21 11:25:59,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26923 to 19285. [2023-12-21 11:25:59,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19285 states, 14313 states have (on average 1.2608817159225878) internal successors, (18047), 14456 states have internal predecessors, (18047), 3078 states have call successors, (3078), 1893 states have call predecessors, (3078), 1893 states have return successors, (3078), 2935 states have call predecessors, (3078), 3078 states have call successors, (3078) [2023-12-21 11:26:00,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19285 states to 19285 states and 24203 transitions. [2023-12-21 11:26:00,028 INFO L78 Accepts]: Start accepts. Automaton has 19285 states and 24203 transitions. Word has length 189 [2023-12-21 11:26:00,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:26:00,028 INFO L495 AbstractCegarLoop]: Abstraction has 19285 states and 24203 transitions. [2023-12-21 11:26:00,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 13.176470588235293) internal successors, (224), 15 states have internal predecessors, (224), 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 11:26:00,029 INFO L276 IsEmpty]: Start isEmpty. Operand 19285 states and 24203 transitions. [2023-12-21 11:26:00,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-12-21 11:26:00,033 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:26:00,033 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:26:00,038 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 11:26:00,234 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 11:26:00,234 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:26:00,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:26:00,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1944868895, now seen corresponding path program 1 times [2023-12-21 11:26:00,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:26:00,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303868492] [2023-12-21 11:26:00,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:26:00,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:26:00,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:00,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:26:00,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:00,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:26:00,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:00,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-21 11:26:00,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:00,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-21 11:26:00,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:00,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-21 11:26:00,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:00,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 11:26:00,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:00,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 11:26:00,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:00,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 11:26:00,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:00,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-21 11:26:00,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:00,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-21 11:26:00,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:00,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-21 11:26:00,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:00,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-21 11:26:00,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:00,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-21 11:26:00,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:00,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-21 11:26:00,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:00,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-12-21 11:26:00,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:00,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-12-21 11:26:00,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:00,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-12-21 11:26:00,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:00,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-12-21 11:26:00,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:00,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2023-12-21 11:26:00,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:00,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-12-21 11:26:00,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:00,495 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 19 proven. 9 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2023-12-21 11:26:00,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:26:00,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303868492] [2023-12-21 11:26:00,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303868492] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:26:00,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371793446] [2023-12-21 11:26:00,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:26:00,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:26:00,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:26:00,497 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 11:26:00,501 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 11:26:00,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:00,670 INFO L262 TraceCheckSpWp]: Trace formula consists of 761 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-21 11:26:00,674 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:26:01,132 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 100 proven. 21 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-12-21 11:26:01,132 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:26:01,391 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 19 proven. 9 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2023-12-21 11:26:01,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371793446] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:26:01,391 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:26:01,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 9] total 18 [2023-12-21 11:26:01,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778882786] [2023-12-21 11:26:01,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:26:01,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-21 11:26:01,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:26:01,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-21 11:26:01,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2023-12-21 11:26:01,394 INFO L87 Difference]: Start difference. First operand 19285 states and 24203 transitions. Second operand has 18 states, 18 states have (on average 14.666666666666666) internal successors, (264), 18 states have internal predecessors, (264), 10 states have call successors, (54), 6 states have call predecessors, (54), 6 states have return successors, (53), 10 states have call predecessors, (53), 10 states have call successors, (53) [2023-12-21 11:26:05,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:26:05,759 INFO L93 Difference]: Finished difference Result 34503 states and 43475 transitions. [2023-12-21 11:26:05,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-21 11:26:05,760 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 14.666666666666666) internal successors, (264), 18 states have internal predecessors, (264), 10 states have call successors, (54), 6 states have call predecessors, (54), 6 states have return successors, (53), 10 states have call predecessors, (53), 10 states have call successors, (53) Word has length 193 [2023-12-21 11:26:05,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:26:05,794 INFO L225 Difference]: With dead ends: 34503 [2023-12-21 11:26:05,795 INFO L226 Difference]: Without dead ends: 17433 [2023-12-21 11:26:05,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 412 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=529, Invalid=1193, Unknown=0, NotChecked=0, Total=1722 [2023-12-21 11:26:05,815 INFO L413 NwaCegarLoop]: 328 mSDtfsCounter, 901 mSDsluCounter, 1746 mSDsCounter, 0 mSdLazyCounter, 1002 mSolverCounterSat, 281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 901 SdHoareTripleChecker+Valid, 2074 SdHoareTripleChecker+Invalid, 1283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 281 IncrementalHoareTripleChecker+Valid, 1002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 11:26:05,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [901 Valid, 2074 Invalid, 1283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [281 Valid, 1002 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 11:26:05,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17433 states. [2023-12-21 11:26:08,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17433 to 17373. [2023-12-21 11:26:08,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17373 states, 12911 states have (on average 1.2509488033459841) internal successors, (16151), 13038 states have internal predecessors, (16151), 2756 states have call successors, (2756), 1705 states have call predecessors, (2756), 1705 states have return successors, (2756), 2629 states have call predecessors, (2756), 2756 states have call successors, (2756) [2023-12-21 11:26:09,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17373 states to 17373 states and 21663 transitions. [2023-12-21 11:26:09,009 INFO L78 Accepts]: Start accepts. Automaton has 17373 states and 21663 transitions. Word has length 193 [2023-12-21 11:26:09,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:26:09,009 INFO L495 AbstractCegarLoop]: Abstraction has 17373 states and 21663 transitions. [2023-12-21 11:26:09,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 14.666666666666666) internal successors, (264), 18 states have internal predecessors, (264), 10 states have call successors, (54), 6 states have call predecessors, (54), 6 states have return successors, (53), 10 states have call predecessors, (53), 10 states have call successors, (53) [2023-12-21 11:26:09,009 INFO L276 IsEmpty]: Start isEmpty. Operand 17373 states and 21663 transitions. [2023-12-21 11:26:09,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-12-21 11:26:09,013 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:26:09,013 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:26:09,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-21 11:26:09,215 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 11:26:09,216 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:26:09,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:26:09,216 INFO L85 PathProgramCache]: Analyzing trace with hash 398422637, now seen corresponding path program 1 times [2023-12-21 11:26:09,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:26:09,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554257119] [2023-12-21 11:26:09,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:26:09,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:26:09,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:09,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:26:09,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:09,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:26:09,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:09,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-21 11:26:09,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:09,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-21 11:26:09,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:09,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-21 11:26:09,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:09,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 11:26:09,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:09,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 11:26:09,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:09,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 11:26:09,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:09,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-21 11:26:09,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:09,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-21 11:26:09,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:09,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-21 11:26:09,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:09,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-21 11:26:09,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:09,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-21 11:26:09,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:09,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-21 11:26:09,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:09,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-12-21 11:26:09,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:09,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2023-12-21 11:26:09,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:09,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2023-12-21 11:26:09,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:09,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-12-21 11:26:09,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:09,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-12-21 11:26:09,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:09,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2023-12-21 11:26:09,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:09,616 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2023-12-21 11:26:09,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:26:09,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554257119] [2023-12-21 11:26:09,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554257119] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:26:09,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165652073] [2023-12-21 11:26:09,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:26:09,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:26:09,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:26:09,618 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 11:26:09,623 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 11:26:09,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:09,771 INFO L262 TraceCheckSpWp]: Trace formula consists of 762 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-21 11:26:09,776 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:26:09,953 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 99 proven. 20 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-12-21 11:26:09,953 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:26:10,208 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2023-12-21 11:26:10,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165652073] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:26:10,209 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:26:10,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 22 [2023-12-21 11:26:10,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564375406] [2023-12-21 11:26:10,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:26:10,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-21 11:26:10,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:26:10,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-21 11:26:10,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2023-12-21 11:26:10,210 INFO L87 Difference]: Start difference. First operand 17373 states and 21663 transitions. Second operand has 22 states, 22 states have (on average 12.909090909090908) internal successors, (284), 22 states have internal predecessors, (284), 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 11:26:14,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:26:14,915 INFO L93 Difference]: Finished difference Result 35087 states and 43847 transitions. [2023-12-21 11:26:14,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-21 11:26:14,915 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 12.909090909090908) internal successors, (284), 22 states have internal predecessors, (284), 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 195 [2023-12-21 11:26:14,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:26:14,959 INFO L225 Difference]: With dead ends: 35087 [2023-12-21 11:26:14,959 INFO L226 Difference]: Without dead ends: 18561 [2023-12-21 11:26:14,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 426 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 448 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=358, Invalid=1622, Unknown=0, NotChecked=0, Total=1980 [2023-12-21 11:26:14,981 INFO L413 NwaCegarLoop]: 434 mSDtfsCounter, 1285 mSDsluCounter, 3143 mSDsCounter, 0 mSdLazyCounter, 1921 mSolverCounterSat, 351 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1285 SdHoareTripleChecker+Valid, 3577 SdHoareTripleChecker+Invalid, 2272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 351 IncrementalHoareTripleChecker+Valid, 1921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:26:14,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1285 Valid, 3577 Invalid, 2272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [351 Valid, 1921 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-21 11:26:14,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18561 states. [2023-12-21 11:26:18,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18561 to 17652. [2023-12-21 11:26:18,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17652 states, 13165 states have (on average 1.2483099126471706) internal successors, (16434), 13284 states have internal predecessors, (16434), 2755 states have call successors, (2755), 1731 states have call predecessors, (2755), 1731 states have return successors, (2755), 2636 states have call predecessors, (2755), 2755 states have call successors, (2755) [2023-12-21 11:26:18,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17652 states to 17652 states and 21944 transitions. [2023-12-21 11:26:18,444 INFO L78 Accepts]: Start accepts. Automaton has 17652 states and 21944 transitions. Word has length 195 [2023-12-21 11:26:18,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:26:18,445 INFO L495 AbstractCegarLoop]: Abstraction has 17652 states and 21944 transitions. [2023-12-21 11:26:18,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 12.909090909090908) internal successors, (284), 22 states have internal predecessors, (284), 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 11:26:18,445 INFO L276 IsEmpty]: Start isEmpty. Operand 17652 states and 21944 transitions. [2023-12-21 11:26:18,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2023-12-21 11:26:18,448 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:26:18,449 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:26:18,455 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 11:26:18,649 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 11:26:18,649 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:26:18,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:26:18,649 INFO L85 PathProgramCache]: Analyzing trace with hash -130719144, now seen corresponding path program 1 times [2023-12-21 11:26:18,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:26:18,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937291637] [2023-12-21 11:26:18,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:26:18,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:26:18,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:18,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:26:18,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:18,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:26:18,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:18,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-21 11:26:18,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:18,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-21 11:26:18,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:18,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-21 11:26:18,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:18,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 11:26:18,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:18,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 11:26:18,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:18,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 11:26:18,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:18,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-21 11:26:18,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:18,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-21 11:26:18,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:18,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-21 11:26:18,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:18,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-21 11:26:18,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:18,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-21 11:26:18,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:18,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-12-21 11:26:18,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:18,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-21 11:26:18,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:18,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-12-21 11:26:18,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:18,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-12-21 11:26:18,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:18,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2023-12-21 11:26:18,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:18,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-12-21 11:26:18,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:18,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2023-12-21 11:26:18,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:18,996 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 18 proven. 22 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2023-12-21 11:26:18,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:26:18,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937291637] [2023-12-21 11:26:18,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937291637] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:26:18,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922915462] [2023-12-21 11:26:18,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:26:18,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:26:18,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:26:19,001 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 11:26:19,024 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 11:26:19,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:19,165 INFO L262 TraceCheckSpWp]: Trace formula consists of 781 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-21 11:26:19,169 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:26:19,325 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 11:26:19,325 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:26:19,530 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 11:26:19,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922915462] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:26:19,531 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:26:19,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10] total 16 [2023-12-21 11:26:19,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16407053] [2023-12-21 11:26:19,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:26:19,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-21 11:26:19,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:26:19,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-21 11:26:19,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2023-12-21 11:26:19,533 INFO L87 Difference]: Start difference. First operand 17652 states and 21944 transitions. Second operand has 16 states, 16 states have (on average 11.3125) internal successors, (181), 13 states have internal predecessors, (181), 4 states have call successors, (40), 4 states have call predecessors, (40), 9 states have return successors, (41), 7 states have call predecessors, (41), 4 states have call successors, (41) [2023-12-21 11:26:26,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:26:26,781 INFO L93 Difference]: Finished difference Result 45129 states and 57376 transitions. [2023-12-21 11:26:26,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-21 11:26:26,782 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.3125) internal successors, (181), 13 states have internal predecessors, (181), 4 states have call successors, (40), 4 states have call predecessors, (40), 9 states have return successors, (41), 7 states have call predecessors, (41), 4 states have call successors, (41) Word has length 198 [2023-12-21 11:26:26,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:26:26,876 INFO L225 Difference]: With dead ends: 45129 [2023-12-21 11:26:26,876 INFO L226 Difference]: Without dead ends: 29024 [2023-12-21 11:26:26,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 429 SyntacticMatches, 6 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=257, Invalid=1225, Unknown=0, NotChecked=0, Total=1482 [2023-12-21 11:26:26,905 INFO L413 NwaCegarLoop]: 634 mSDtfsCounter, 1180 mSDsluCounter, 4204 mSDsCounter, 0 mSdLazyCounter, 1492 mSolverCounterSat, 423 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1189 SdHoareTripleChecker+Valid, 4838 SdHoareTripleChecker+Invalid, 1915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 423 IncrementalHoareTripleChecker+Valid, 1492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:26:26,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1189 Valid, 4838 Invalid, 1915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [423 Valid, 1492 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-21 11:26:26,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29024 states. [2023-12-21 11:26:31,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29024 to 22528. [2023-12-21 11:26:31,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22528 states, 16813 states have (on average 1.251174686254684) internal successors, (21036), 16970 states have internal predecessors, (21036), 3502 states have call successors, (3502), 2212 states have call predecessors, (3502), 2212 states have return successors, (3502), 3345 states have call predecessors, (3502), 3502 states have call successors, (3502) [2023-12-21 11:26:31,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22528 states to 22528 states and 28040 transitions. [2023-12-21 11:26:31,754 INFO L78 Accepts]: Start accepts. Automaton has 22528 states and 28040 transitions. Word has length 198 [2023-12-21 11:26:31,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:26:31,755 INFO L495 AbstractCegarLoop]: Abstraction has 22528 states and 28040 transitions. [2023-12-21 11:26:31,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.3125) internal successors, (181), 13 states have internal predecessors, (181), 4 states have call successors, (40), 4 states have call predecessors, (40), 9 states have return successors, (41), 7 states have call predecessors, (41), 4 states have call successors, (41) [2023-12-21 11:26:31,755 INFO L276 IsEmpty]: Start isEmpty. Operand 22528 states and 28040 transitions. [2023-12-21 11:26:31,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2023-12-21 11:26:31,759 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:26:31,759 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, 1] [2023-12-21 11:26:31,765 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 11:26:31,960 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 11:26:31,960 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:26:31,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:26:31,960 INFO L85 PathProgramCache]: Analyzing trace with hash -121294346, now seen corresponding path program 1 times [2023-12-21 11:26:31,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:26:31,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591504441] [2023-12-21 11:26:31,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:26:31,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:26:31,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:32,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:26:32,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:32,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:26:32,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:32,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-21 11:26:32,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:32,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-21 11:26:32,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:32,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-21 11:26:32,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:32,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 11:26:32,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:32,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 11:26:32,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:32,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 11:26:32,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:32,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-21 11:26:32,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:32,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-21 11:26:32,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:32,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-21 11:26:32,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:32,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-21 11:26:32,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:32,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-21 11:26:32,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:32,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-21 11:26:32,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:32,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-12-21 11:26:32,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:32,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-21 11:26:32,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:32,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-12-21 11:26:32,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:32,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2023-12-21 11:26:32,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:32,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2023-12-21 11:26:32,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:32,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2023-12-21 11:26:32,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:32,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2023-12-21 11:26:32,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:32,192 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 11:26:32,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:26:32,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591504441] [2023-12-21 11:26:32,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591504441] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:26:32,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:26:32,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 11:26:32,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272526457] [2023-12-21 11:26:32,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:26:32,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 11:26:32,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:26:32,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 11:26:32,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-21 11:26:32,193 INFO L87 Difference]: Start difference. First operand 22528 states and 28040 transitions. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 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 11:26:36,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:26:36,952 INFO L93 Difference]: Finished difference Result 42659 states and 53571 transitions. [2023-12-21 11:26:36,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 11:26:36,952 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 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 200 [2023-12-21 11:26:36,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:26:37,017 INFO L225 Difference]: With dead ends: 42659 [2023-12-21 11:26:37,017 INFO L226 Difference]: Without dead ends: 23144 [2023-12-21 11:26:37,057 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 11:26:37,058 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 444 mSDsluCounter, 1357 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 1709 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 11:26:37,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [450 Valid, 1709 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 11:26:37,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23144 states. [2023-12-21 11:26:41,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23144 to 22352. [2023-12-21 11:26:41,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22352 states, 16685 states have (on average 1.2501048846269105) internal successors, (20858), 16838 states have internal predecessors, (20858), 3474 states have call successors, (3474), 2192 states have call predecessors, (3474), 2192 states have return successors, (3474), 3321 states have call predecessors, (3474), 3474 states have call successors, (3474) [2023-12-21 11:26:41,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22352 states to 22352 states and 27806 transitions. [2023-12-21 11:26:41,753 INFO L78 Accepts]: Start accepts. Automaton has 22352 states and 27806 transitions. Word has length 200 [2023-12-21 11:26:41,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:26:41,753 INFO L495 AbstractCegarLoop]: Abstraction has 22352 states and 27806 transitions. [2023-12-21 11:26:41,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 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 11:26:41,753 INFO L276 IsEmpty]: Start isEmpty. Operand 22352 states and 27806 transitions. [2023-12-21 11:26:41,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2023-12-21 11:26:41,758 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:26:41,758 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] [2023-12-21 11:26:41,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2023-12-21 11:26:41,758 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:26:41,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:26:41,758 INFO L85 PathProgramCache]: Analyzing trace with hash 679197380, now seen corresponding path program 1 times [2023-12-21 11:26:41,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:26:41,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311396268] [2023-12-21 11:26:41,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:26:41,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:26:41,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:42,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:26:42,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:42,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:26:42,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:42,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-21 11:26:42,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:42,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-21 11:26:42,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:42,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-21 11:26:42,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:42,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 11:26:42,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:42,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 11:26:42,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:42,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 11:26:42,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:42,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-21 11:26:42,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:42,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-21 11:26:42,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:42,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-21 11:26:42,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:42,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-21 11:26:42,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:42,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-21 11:26:42,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:42,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-12-21 11:26:42,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:42,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-12-21 11:26:42,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:42,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-12-21 11:26:42,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:42,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-12-21 11:26:42,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:42,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-12-21 11:26:42,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:42,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2023-12-21 11:26:42,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:42,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-12-21 11:26:42,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:42,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2023-12-21 11:26:42,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:42,099 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 11:26:42,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:26:42,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311396268] [2023-12-21 11:26:42,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311396268] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:26:42,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961018045] [2023-12-21 11:26:42,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:26:42,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:26:42,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:26:42,105 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 11:26:42,107 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 11:26:42,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:42,283 INFO L262 TraceCheckSpWp]: Trace formula consists of 779 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-21 11:26:42,287 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:26:42,497 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 11:26:42,498 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:26:42,821 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 11:26:42,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961018045] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:26:42,821 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:26:42,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 9] total 17 [2023-12-21 11:26:42,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782589647] [2023-12-21 11:26:42,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:26:42,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-21 11:26:42,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:26:42,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-21 11:26:42,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2023-12-21 11:26:42,824 INFO L87 Difference]: Start difference. First operand 22352 states and 27806 transitions. Second operand has 17 states, 17 states have (on average 11.588235294117647) internal successors, (197), 17 states have internal predecessors, (197), 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 11:26:48,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:26:48,743 INFO L93 Difference]: Finished difference Result 46880 states and 58643 transitions. [2023-12-21 11:26:48,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-21 11:26:48,743 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 11.588235294117647) internal successors, (197), 17 states have internal predecessors, (197), 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 201 [2023-12-21 11:26:48,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:26:48,812 INFO L225 Difference]: With dead ends: 46880 [2023-12-21 11:26:48,812 INFO L226 Difference]: Without dead ends: 27339 [2023-12-21 11:26:48,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 442 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 11:26:48,845 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 745 mSDsluCounter, 2301 mSDsCounter, 0 mSdLazyCounter, 1155 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 745 SdHoareTripleChecker+Valid, 2631 SdHoareTripleChecker+Invalid, 1321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 1155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 11:26:48,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [745 Valid, 2631 Invalid, 1321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 1155 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 11:26:48,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27339 states. [2023-12-21 11:26:54,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27339 to 26669. [2023-12-21 11:26:54,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26669 states, 19910 states have (on average 1.2474635861376193) internal successors, (24837), 20096 states have internal predecessors, (24837), 4137 states have call successors, (4137), 2621 states have call predecessors, (4137), 2621 states have return successors, (4137), 3951 states have call predecessors, (4137), 4137 states have call successors, (4137) [2023-12-21 11:26:54,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26669 states to 26669 states and 33111 transitions. [2023-12-21 11:26:54,322 INFO L78 Accepts]: Start accepts. Automaton has 26669 states and 33111 transitions. Word has length 201 [2023-12-21 11:26:54,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:26:54,323 INFO L495 AbstractCegarLoop]: Abstraction has 26669 states and 33111 transitions. [2023-12-21 11:26:54,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 11.588235294117647) internal successors, (197), 17 states have internal predecessors, (197), 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 11:26:54,323 INFO L276 IsEmpty]: Start isEmpty. Operand 26669 states and 33111 transitions. [2023-12-21 11:26:54,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2023-12-21 11:26:54,329 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:26:54,330 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 11:26:54,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-21 11:26:54,531 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 11:26:54,531 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:26:54,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:26:54,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1973031277, now seen corresponding path program 1 times [2023-12-21 11:26:54,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:26:54,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389861185] [2023-12-21 11:26:54,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:26:54,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:26:54,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:54,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:26:54,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:54,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-21 11:26:54,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:54,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-21 11:26:54,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:54,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-21 11:26:54,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:54,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 11:26:54,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:54,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-21 11:26:54,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:54,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 11:26:54,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:54,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 11:26:54,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:54,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 11:26:54,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:54,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 11:26:54,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:54,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 11:26:54,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:54,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 11:26:54,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:54,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-21 11:26:54,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:54,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-21 11:26:54,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:54,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2023-12-21 11:26:54,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:54,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-12-21 11:26:54,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:54,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2023-12-21 11:26:54,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:54,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2023-12-21 11:26:54,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:54,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2023-12-21 11:26:54,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:54,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2023-12-21 11:26:54,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:54,926 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 11:26:54,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:26:54,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389861185] [2023-12-21 11:26:54,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389861185] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:26:54,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707505461] [2023-12-21 11:26:54,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:26:54,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:26:54,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:26:54,929 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 11:26:54,938 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 11:26:55,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:55,124 INFO L262 TraceCheckSpWp]: Trace formula consists of 808 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-21 11:26:55,128 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:26:55,459 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 117 proven. 11 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-12-21 11:26:55,459 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:26:55,837 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 11:26:55,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707505461] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:26:55,837 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:26:55,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 8] total 17 [2023-12-21 11:26:55,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660907310] [2023-12-21 11:26:55,837 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:26:55,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-21 11:26:55,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:26:55,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-21 11:26:55,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2023-12-21 11:26:55,839 INFO L87 Difference]: Start difference. First operand 26669 states and 33111 transitions. Second operand has 17 states, 17 states have (on average 14.058823529411764) internal successors, (239), 17 states have internal predecessors, (239), 7 states have call successors, (42), 5 states have call predecessors, (42), 6 states have return successors, (41), 7 states have call predecessors, (41), 7 states have call successors, (41) [2023-12-21 11:27:01,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:27:01,750 INFO L93 Difference]: Finished difference Result 48998 states and 61313 transitions. [2023-12-21 11:27:01,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-21 11:27:01,751 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 14.058823529411764) internal successors, (239), 17 states have internal predecessors, (239), 7 states have call successors, (42), 5 states have call predecessors, (42), 6 states have return successors, (41), 7 states have call predecessors, (41), 7 states have call successors, (41) Word has length 203 [2023-12-21 11:27:01,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:27:01,819 INFO L225 Difference]: With dead ends: 48998 [2023-12-21 11:27:01,820 INFO L226 Difference]: Without dead ends: 25561 [2023-12-21 11:27:01,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 446 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=363, Invalid=1359, Unknown=0, NotChecked=0, Total=1722 [2023-12-21 11:27:01,850 INFO L413 NwaCegarLoop]: 344 mSDtfsCounter, 1197 mSDsluCounter, 1649 mSDsCounter, 0 mSdLazyCounter, 1240 mSolverCounterSat, 249 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1197 SdHoareTripleChecker+Valid, 1993 SdHoareTripleChecker+Invalid, 1489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 249 IncrementalHoareTripleChecker+Valid, 1240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 11:27:01,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1197 Valid, 1993 Invalid, 1489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [249 Valid, 1240 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 11:27:01,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25561 states. [2023-12-21 11:27:07,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25561 to 25528. [2023-12-21 11:27:07,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25528 states, 19044 states have (on average 1.249317370300357) internal successors, (23792), 19226 states have internal predecessors, (23792), 3983 states have call successors, (3983), 2500 states have call predecessors, (3983), 2500 states have return successors, (3983), 3801 states have call predecessors, (3983), 3983 states have call successors, (3983) [2023-12-21 11:27:07,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25528 states to 25528 states and 31758 transitions. [2023-12-21 11:27:07,104 INFO L78 Accepts]: Start accepts. Automaton has 25528 states and 31758 transitions. Word has length 203 [2023-12-21 11:27:07,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:27:07,105 INFO L495 AbstractCegarLoop]: Abstraction has 25528 states and 31758 transitions. [2023-12-21 11:27:07,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 14.058823529411764) internal successors, (239), 17 states have internal predecessors, (239), 7 states have call successors, (42), 5 states have call predecessors, (42), 6 states have return successors, (41), 7 states have call predecessors, (41), 7 states have call successors, (41) [2023-12-21 11:27:07,105 INFO L276 IsEmpty]: Start isEmpty. Operand 25528 states and 31758 transitions. [2023-12-21 11:27:07,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2023-12-21 11:27:07,111 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:27:07,111 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, 1] [2023-12-21 11:27:07,120 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 11:27:07,320 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 11:27:07,321 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:27:07,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:27:07,321 INFO L85 PathProgramCache]: Analyzing trace with hash -664972214, now seen corresponding path program 1 times [2023-12-21 11:27:07,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:27:07,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614622846] [2023-12-21 11:27:07,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:27:07,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:27:07,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:08,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:27:08,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:08,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-21 11:27:08,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:08,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-21 11:27:08,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:08,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-21 11:27:08,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:08,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 11:27:08,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:08,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-21 11:27:08,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:08,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 11:27:08,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:08,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 11:27:08,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:08,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 11:27:08,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:08,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 11:27:08,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:08,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 11:27:08,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:08,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 11:27:08,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:08,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-21 11:27:08,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:08,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-12-21 11:27:08,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:08,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-12-21 11:27:08,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:08,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-12-21 11:27:08,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:08,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-12-21 11:27:08,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:08,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2023-12-21 11:27:08,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:08,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2023-12-21 11:27:08,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:08,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2023-12-21 11:27:08,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:08,282 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 11:27:08,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:27:08,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614622846] [2023-12-21 11:27:08,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614622846] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:27:08,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717158798] [2023-12-21 11:27:08,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:27:08,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:27:08,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:27:08,284 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 11:27:08,304 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 11:27:08,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:08,438 INFO L262 TraceCheckSpWp]: Trace formula consists of 808 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-21 11:27:08,441 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:27:08,728 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 11:27:08,728 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:27:09,108 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 11:27:09,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717158798] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:27:09,108 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:27:09,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 14] total 30 [2023-12-21 11:27:09,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650984638] [2023-12-21 11:27:09,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:27:09,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-21 11:27:09,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:27:09,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-21 11:27:09,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=780, Unknown=0, NotChecked=0, Total=870 [2023-12-21 11:27:09,110 INFO L87 Difference]: Start difference. First operand 25528 states and 31758 transitions. Second operand has 30 states, 30 states have (on average 10.033333333333333) internal successors, (301), 29 states have internal predecessors, (301), 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 11:27:19,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:27:19,307 INFO L93 Difference]: Finished difference Result 57353 states and 72642 transitions. [2023-12-21 11:27:19,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2023-12-21 11:27:19,307 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 10.033333333333333) internal successors, (301), 29 states have internal predecessors, (301), 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 204 [2023-12-21 11:27:19,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:27:19,385 INFO L225 Difference]: With dead ends: 57353 [2023-12-21 11:27:19,385 INFO L226 Difference]: Without dead ends: 34580 [2023-12-21 11:27:19,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 523 GetRequests, 435 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2088 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1136, Invalid=6874, Unknown=0, NotChecked=0, Total=8010 [2023-12-21 11:27:19,414 INFO L413 NwaCegarLoop]: 466 mSDtfsCounter, 3221 mSDsluCounter, 5911 mSDsCounter, 0 mSdLazyCounter, 3183 mSolverCounterSat, 1147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3221 SdHoareTripleChecker+Valid, 6377 SdHoareTripleChecker+Invalid, 4330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1147 IncrementalHoareTripleChecker+Valid, 3183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-21 11:27:19,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3221 Valid, 6377 Invalid, 4330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1147 Valid, 3183 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-21 11:27:19,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34580 states. [2023-12-21 11:27:26,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34580 to 29815. [2023-12-21 11:27:26,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29815 states, 22236 states have (on average 1.251439107753193) internal successors, (27827), 22448 states have internal predecessors, (27827), 4669 states have call successors, (4669), 2909 states have call predecessors, (4669), 2909 states have return successors, (4669), 4457 states have call predecessors, (4669), 4669 states have call successors, (4669) [2023-12-21 11:27:26,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29815 states to 29815 states and 37165 transitions. [2023-12-21 11:27:26,250 INFO L78 Accepts]: Start accepts. Automaton has 29815 states and 37165 transitions. Word has length 204 [2023-12-21 11:27:26,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:27:26,250 INFO L495 AbstractCegarLoop]: Abstraction has 29815 states and 37165 transitions. [2023-12-21 11:27:26,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 10.033333333333333) internal successors, (301), 29 states have internal predecessors, (301), 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 11:27:26,250 INFO L276 IsEmpty]: Start isEmpty. Operand 29815 states and 37165 transitions. [2023-12-21 11:27:26,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-12-21 11:27:26,256 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:27:26,256 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, 1] [2023-12-21 11:27:26,261 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 11:27:26,456 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 11:27:26,457 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:27:26,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:27:26,457 INFO L85 PathProgramCache]: Analyzing trace with hash -302032419, now seen corresponding path program 1 times [2023-12-21 11:27:26,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:27:26,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070114407] [2023-12-21 11:27:26,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:27:26,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:27:26,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:26,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:27:26,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:26,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:27:26,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:26,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-21 11:27:26,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:26,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-21 11:27:26,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:26,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-21 11:27:26,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:26,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 11:27:26,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:26,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 11:27:26,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:26,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 11:27:26,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:26,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-21 11:27:26,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:26,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-21 11:27:26,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:26,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-21 11:27:26,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:26,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-21 11:27:26,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:26,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-21 11:27:26,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:26,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-21 11:27:26,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:26,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-12-21 11:27:26,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:26,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2023-12-21 11:27:26,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:26,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-12-21 11:27:26,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:26,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2023-12-21 11:27:26,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:26,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2023-12-21 11:27:26,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:26,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2023-12-21 11:27:26,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:26,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2023-12-21 11:27:26,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:26,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2023-12-21 11:27:26,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:26,779 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 11:27:26,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:27:26,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070114407] [2023-12-21 11:27:26,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070114407] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:27:26,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985746169] [2023-12-21 11:27:26,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:27:26,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:27:26,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:27:26,781 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 11:27:26,784 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 11:27:26,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:26,995 INFO L262 TraceCheckSpWp]: Trace formula consists of 796 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-21 11:27:26,999 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:27:27,336 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 11:27:27,337 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:27:27,562 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 11:27:27,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985746169] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:27:27,563 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:27:27,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 13 [2023-12-21 11:27:27,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948680279] [2023-12-21 11:27:27,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:27:27,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 11:27:27,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:27:27,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 11:27:27,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2023-12-21 11:27:27,564 INFO L87 Difference]: Start difference. First operand 29815 states and 37165 transitions. Second operand has 13 states, 13 states have (on average 17.692307692307693) internal successors, (230), 13 states have internal predecessors, (230), 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 11:27:33,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:27:33,718 INFO L93 Difference]: Finished difference Result 54540 states and 68394 transitions. [2023-12-21 11:27:33,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 11:27:33,719 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 17.692307692307693) internal successors, (230), 13 states have internal predecessors, (230), 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 207 [2023-12-21 11:27:33,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:27:33,777 INFO L225 Difference]: With dead ends: 54540 [2023-12-21 11:27:33,777 INFO L226 Difference]: Without dead ends: 27696 [2023-12-21 11:27:33,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 453 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=199, Unknown=0, NotChecked=0, Total=306 [2023-12-21 11:27:33,809 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 1087 mSDsluCounter, 1048 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 300 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1087 SdHoareTripleChecker+Valid, 1390 SdHoareTripleChecker+Invalid, 949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 300 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 11:27:33,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1087 Valid, 1390 Invalid, 949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [300 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 11:27:33,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27696 states. [2023-12-21 11:27:39,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27696 to 27601. [2023-12-21 11:27:39,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27601 states, 20620 states have (on average 1.251600387972842) internal successors, (25808), 20816 states have internal predecessors, (25808), 4290 states have call successors, (4290), 2690 states have call predecessors, (4290), 2690 states have return successors, (4290), 4094 states have call predecessors, (4290), 4290 states have call successors, (4290) [2023-12-21 11:27:39,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27601 states to 27601 states and 34388 transitions. [2023-12-21 11:27:39,898 INFO L78 Accepts]: Start accepts. Automaton has 27601 states and 34388 transitions. Word has length 207 [2023-12-21 11:27:39,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:27:39,899 INFO L495 AbstractCegarLoop]: Abstraction has 27601 states and 34388 transitions. [2023-12-21 11:27:39,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 17.692307692307693) internal successors, (230), 13 states have internal predecessors, (230), 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 11:27:39,899 INFO L276 IsEmpty]: Start isEmpty. Operand 27601 states and 34388 transitions. [2023-12-21 11:27:39,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-12-21 11:27:39,906 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:27:39,906 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, 1] [2023-12-21 11:27:39,918 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 11:27:40,118 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 11:27:40,119 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:27:40,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:27:40,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1666312996, now seen corresponding path program 1 times [2023-12-21 11:27:40,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:27:40,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453690789] [2023-12-21 11:27:40,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:27:40,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:27:40,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:40,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:27:40,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:40,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-21 11:27:40,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:40,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-21 11:27:40,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:40,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-21 11:27:40,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:40,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 11:27:40,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:40,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-21 11:27:40,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:40,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 11:27:40,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:40,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 11:27:40,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:40,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 11:27:40,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:40,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 11:27:40,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:40,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 11:27:40,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:40,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 11:27:40,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:40,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-21 11:27:40,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:40,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-21 11:27:40,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:40,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-12-21 11:27:40,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:40,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-21 11:27:40,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:40,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2023-12-21 11:27:40,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:40,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2023-12-21 11:27:40,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:40,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2023-12-21 11:27:40,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:40,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2023-12-21 11:27:40,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:40,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2023-12-21 11:27:40,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:40,414 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 11:27:40,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:27:40,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453690789] [2023-12-21 11:27:40,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453690789] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:27:40,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473681619] [2023-12-21 11:27:40,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:27:40,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:27:40,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:27:40,415 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 11:27:40,418 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 11:27:40,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:40,595 INFO L262 TraceCheckSpWp]: Trace formula consists of 821 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-21 11:27:40,598 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:27:41,737 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 11:27:41,737 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:27:41,959 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 11:27:41,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473681619] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:27:41,960 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:27:41,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 11] total 25 [2023-12-21 11:27:41,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187149250] [2023-12-21 11:27:41,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:27:41,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-21 11:27:41,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:27:41,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-21 11:27:41,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=526, Unknown=0, NotChecked=0, Total=600 [2023-12-21 11:27:41,962 INFO L87 Difference]: Start difference. First operand 27601 states and 34388 transitions. Second operand has 25 states, 25 states have (on average 10.24) internal successors, (256), 23 states have internal predecessors, (256), 9 states have call successors, (44), 6 states have call predecessors, (44), 9 states have return successors, (44), 11 states have call predecessors, (44), 9 states have call successors, (44) [2023-12-21 11:27:53,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:27:53,145 INFO L93 Difference]: Finished difference Result 60996 states and 77560 transitions. [2023-12-21 11:27:53,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-21 11:27:53,146 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 10.24) internal successors, (256), 23 states have internal predecessors, (256), 9 states have call successors, (44), 6 states have call predecessors, (44), 9 states have return successors, (44), 11 states have call predecessors, (44), 9 states have call successors, (44) Word has length 208 [2023-12-21 11:27:53,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:27:53,228 INFO L225 Difference]: With dead ends: 60996 [2023-12-21 11:27:53,228 INFO L226 Difference]: Without dead ends: 35937 [2023-12-21 11:27:53,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 503 GetRequests, 449 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 715 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=467, Invalid=2613, Unknown=0, NotChecked=0, Total=3080 [2023-12-21 11:27:53,254 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 1215 mSDsluCounter, 2765 mSDsCounter, 0 mSdLazyCounter, 1933 mSolverCounterSat, 417 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1215 SdHoareTripleChecker+Valid, 3147 SdHoareTripleChecker+Invalid, 2350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 417 IncrementalHoareTripleChecker+Valid, 1933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-21 11:27:53,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1215 Valid, 3147 Invalid, 2350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [417 Valid, 1933 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-21 11:27:53,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35937 states. [2023-12-21 11:28:00,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35937 to 29077. [2023-12-21 11:28:00,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29077 states, 21753 states have (on average 1.2539879556842735) internal successors, (27278), 21953 states have internal predecessors, (27278), 4492 states have call successors, (4492), 2831 states have call predecessors, (4492), 2831 states have return successors, (4492), 4292 states have call predecessors, (4492), 4492 states have call successors, (4492) [2023-12-21 11:28:00,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29077 states to 29077 states and 36262 transitions. [2023-12-21 11:28:00,220 INFO L78 Accepts]: Start accepts. Automaton has 29077 states and 36262 transitions. Word has length 208 [2023-12-21 11:28:00,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:28:00,221 INFO L495 AbstractCegarLoop]: Abstraction has 29077 states and 36262 transitions. [2023-12-21 11:28:00,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 10.24) internal successors, (256), 23 states have internal predecessors, (256), 9 states have call successors, (44), 6 states have call predecessors, (44), 9 states have return successors, (44), 11 states have call predecessors, (44), 9 states have call successors, (44) [2023-12-21 11:28:00,221 INFO L276 IsEmpty]: Start isEmpty. Operand 29077 states and 36262 transitions. [2023-12-21 11:28:00,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2023-12-21 11:28:00,227 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:28:00,227 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 11:28:00,232 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 11:28:00,427 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 11:28:00,428 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:28:00,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:28:00,428 INFO L85 PathProgramCache]: Analyzing trace with hash -667582033, now seen corresponding path program 1 times [2023-12-21 11:28:00,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:28:00,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595235649] [2023-12-21 11:28:00,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:28:00,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:28:00,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:00,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:28:00,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:00,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-21 11:28:00,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:00,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-21 11:28:00,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:00,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-21 11:28:00,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:00,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 11:28:00,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:00,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-21 11:28:00,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:00,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 11:28:00,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:00,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 11:28:00,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:00,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 11:28:00,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:00,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 11:28:00,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:00,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 11:28:00,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:00,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 11:28:00,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:00,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-21 11:28:00,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:00,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-12-21 11:28:00,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:00,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-12-21 11:28:00,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:00,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-12-21 11:28:00,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:00,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-12-21 11:28:00,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:00,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-12-21 11:28:00,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:00,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2023-12-21 11:28:00,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:00,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2023-12-21 11:28:00,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:00,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2023-12-21 11:28:00,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:00,770 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 11:28:00,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:28:00,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595235649] [2023-12-21 11:28:00,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595235649] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:28:00,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080728899] [2023-12-21 11:28:00,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:28:00,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:28:00,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:28:00,773 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 11:28:00,776 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 11:28:00,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:00,952 INFO L262 TraceCheckSpWp]: Trace formula consists of 828 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-21 11:28:00,956 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:28:01,304 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 11:28:01,304 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:28:01,615 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 11:28:01,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080728899] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:28:01,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:28:01,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 8] total 24 [2023-12-21 11:28:01,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900647043] [2023-12-21 11:28:01,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:28:01,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-21 11:28:01,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:28:01,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-21 11:28:01,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=470, Unknown=0, NotChecked=0, Total=552 [2023-12-21 11:28:01,618 INFO L87 Difference]: Start difference. First operand 29077 states and 36262 transitions. Second operand has 24 states, 24 states have (on average 12.583333333333334) internal successors, (302), 24 states have internal predecessors, (302), 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 11:28:10,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:28:10,865 INFO L93 Difference]: Finished difference Result 56777 states and 71047 transitions. [2023-12-21 11:28:10,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-12-21 11:28:10,865 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 12.583333333333334) internal successors, (302), 24 states have internal predecessors, (302), 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 213 [2023-12-21 11:28:10,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:28:10,952 INFO L225 Difference]: With dead ends: 56777 [2023-12-21 11:28:10,952 INFO L226 Difference]: Without dead ends: 29262 [2023-12-21 11:28:10,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 554 GetRequests, 471 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2039 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1134, Invalid=6006, Unknown=0, NotChecked=0, Total=7140 [2023-12-21 11:28:10,986 INFO L413 NwaCegarLoop]: 458 mSDtfsCounter, 2600 mSDsluCounter, 4576 mSDsCounter, 0 mSdLazyCounter, 2472 mSolverCounterSat, 859 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2600 SdHoareTripleChecker+Valid, 5034 SdHoareTripleChecker+Invalid, 3331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 859 IncrementalHoareTripleChecker+Valid, 2472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-21 11:28:10,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2600 Valid, 5034 Invalid, 3331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [859 Valid, 2472 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-21 11:28:11,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29262 states. [2023-12-21 11:28:18,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29262 to 28885. [2023-12-21 11:28:18,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28885 states, 21596 states have (on average 1.25282459714762) internal successors, (27056), 21800 states have internal predecessors, (27056), 4478 states have call successors, (4478), 2807 states have call predecessors, (4478), 2810 states have return successors, (4481), 4277 states have call predecessors, (4481), 4478 states have call successors, (4481) [2023-12-21 11:28:18,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28885 states to 28885 states and 36015 transitions. [2023-12-21 11:28:18,282 INFO L78 Accepts]: Start accepts. Automaton has 28885 states and 36015 transitions. Word has length 213 [2023-12-21 11:28:18,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:28:18,282 INFO L495 AbstractCegarLoop]: Abstraction has 28885 states and 36015 transitions. [2023-12-21 11:28:18,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 12.583333333333334) internal successors, (302), 24 states have internal predecessors, (302), 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 11:28:18,283 INFO L276 IsEmpty]: Start isEmpty. Operand 28885 states and 36015 transitions. [2023-12-21 11:28:18,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2023-12-21 11:28:18,289 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:28:18,290 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, 1] [2023-12-21 11:28:18,298 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 11:28:18,493 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 11:28:18,493 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:28:18,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:28:18,494 INFO L85 PathProgramCache]: Analyzing trace with hash -2021291017, now seen corresponding path program 1 times [2023-12-21 11:28:18,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:28:18,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628266924] [2023-12-21 11:28:18,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:28:18,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:28:18,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:18,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:28:18,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:18,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-21 11:28:18,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:18,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-21 11:28:18,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:18,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-21 11:28:18,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:18,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 11:28:18,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:18,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-21 11:28:18,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:18,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 11:28:18,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:18,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 11:28:18,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:18,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 11:28:18,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:18,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 11:28:18,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:18,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 11:28:18,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:18,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 11:28:18,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:18,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-21 11:28:18,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:18,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-12-21 11:28:18,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:18,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-12-21 11:28:18,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:18,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-12-21 11:28:18,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:18,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-12-21 11:28:18,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:18,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-12-21 11:28:18,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:18,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2023-12-21 11:28:18,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:18,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2023-12-21 11:28:18,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:18,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2023-12-21 11:28:18,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:18,878 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 11:28:18,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:28:18,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628266924] [2023-12-21 11:28:18,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628266924] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:28:18,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024664852] [2023-12-21 11:28:18,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:28:18,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:28:18,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:28:18,880 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 11:28:18,882 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 11:28:19,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:19,056 INFO L262 TraceCheckSpWp]: Trace formula consists of 827 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-21 11:28:19,060 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:28:20,034 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 11:28:20,034 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:28:20,379 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 11:28:20,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1024664852] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:28:20,379 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:28:20,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 11] total 34 [2023-12-21 11:28:20,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014743039] [2023-12-21 11:28:20,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:28:20,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-21 11:28:20,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:28:20,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-21 11:28:20,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1011, Unknown=0, NotChecked=0, Total=1122 [2023-12-21 11:28:20,381 INFO L87 Difference]: Start difference. First operand 28885 states and 36015 transitions. Second operand has 34 states, 34 states have (on average 10.176470588235293) internal successors, (346), 31 states have internal predecessors, (346), 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 11:28:33,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:28:33,286 INFO L93 Difference]: Finished difference Result 64980 states and 82519 transitions. [2023-12-21 11:28:33,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-21 11:28:33,286 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 10.176470588235293) internal successors, (346), 31 states have internal predecessors, (346), 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 214 [2023-12-21 11:28:33,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:28:33,369 INFO L225 Difference]: With dead ends: 64980 [2023-12-21 11:28:33,370 INFO L226 Difference]: Without dead ends: 37914 [2023-12-21 11:28:33,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 451 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 723 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=654, Invalid=3506, Unknown=0, NotChecked=0, Total=4160 [2023-12-21 11:28:33,399 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 2896 mSDsluCounter, 4078 mSDsCounter, 0 mSdLazyCounter, 2179 mSolverCounterSat, 1232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2896 SdHoareTripleChecker+Valid, 4397 SdHoareTripleChecker+Invalid, 3411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1232 IncrementalHoareTripleChecker+Valid, 2179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-21 11:28:33,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2896 Valid, 4397 Invalid, 3411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1232 Valid, 2179 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-21 11:28:33,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37914 states. [2023-12-21 11:28:41,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37914 to 30250. [2023-12-21 11:28:41,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30250 states, 22631 states have (on average 1.2535460209447218) internal successors, (28369), 22846 states have internal predecessors, (28369), 4685 states have call successors, (4685), 2930 states have call predecessors, (4685), 2933 states have return successors, (4688), 4473 states have call predecessors, (4688), 4685 states have call successors, (4688) [2023-12-21 11:28:41,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30250 states to 30250 states and 37742 transitions. [2023-12-21 11:28:41,705 INFO L78 Accepts]: Start accepts. Automaton has 30250 states and 37742 transitions. Word has length 214 [2023-12-21 11:28:41,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:28:41,706 INFO L495 AbstractCegarLoop]: Abstraction has 30250 states and 37742 transitions. [2023-12-21 11:28:41,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 10.176470588235293) internal successors, (346), 31 states have internal predecessors, (346), 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 11:28:41,706 INFO L276 IsEmpty]: Start isEmpty. Operand 30250 states and 37742 transitions. [2023-12-21 11:28:41,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2023-12-21 11:28:41,726 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:28:41,726 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, 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 11:28:41,733 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-12-21 11:28:41,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:28:41,936 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:28:41,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:28:41,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1169923141, now seen corresponding path program 1 times [2023-12-21 11:28:41,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:28:41,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044217137] [2023-12-21 11:28:41,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:28:41,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:28:41,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:42,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:28:42,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:42,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:28:42,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:42,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-21 11:28:42,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:42,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-21 11:28:42,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:42,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 11:28:42,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:42,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 11:28:42,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:42,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 11:28:42,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:42,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 11:28:42,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:42,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 11:28:42,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:42,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 11:28:42,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:42,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 11:28:42,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:42,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-21 11:28:42,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:42,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-12-21 11:28:42,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:42,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-21 11:28:42,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:42,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-12-21 11:28:42,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:42,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-12-21 11:28:42,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:42,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-12-21 11:28:42,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:42,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2023-12-21 11:28:42,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:42,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2023-12-21 11:28:42,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:42,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2023-12-21 11:28:42,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:42,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2023-12-21 11:28:42,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:42,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2023-12-21 11:28:42,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:42,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2023-12-21 11:28:42,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:42,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2023-12-21 11:28:42,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:42,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2023-12-21 11:28:42,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:42,147 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2023-12-21 11:28:42,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:28:42,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044217137] [2023-12-21 11:28:42,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044217137] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:28:42,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:28:42,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:28:42,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140278261] [2023-12-21 11:28:42,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:28:42,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:28:42,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:28:42,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:28:42,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:28:42,149 INFO L87 Difference]: Start difference. First operand 30250 states and 37742 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-21 11:28:50,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:28:50,115 INFO L93 Difference]: Finished difference Result 58263 states and 73092 transitions. [2023-12-21 11:28:50,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 11:28:50,115 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 249 [2023-12-21 11:28:50,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:28:50,190 INFO L225 Difference]: With dead ends: 58263 [2023-12-21 11:28:50,191 INFO L226 Difference]: Without dead ends: 29858 [2023-12-21 11:28:50,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 55 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 11:28:50,222 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 7 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 715 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 11:28:50,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 715 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:28:50,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29858 states. [2023-12-21 11:28:58,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29858 to 29850. [2023-12-21 11:28:58,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29850 states, 22431 states have (on average 1.2347643885693906) internal successors, (27697), 22643 states have internal predecessors, (27697), 4487 states have call successors, (4487), 2929 states have call predecessors, (4487), 2931 states have return successors, (4489), 4277 states have call predecessors, (4489), 4487 states have call successors, (4489) [2023-12-21 11:28:58,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29850 states to 29850 states and 36673 transitions. [2023-12-21 11:28:58,247 INFO L78 Accepts]: Start accepts. Automaton has 29850 states and 36673 transitions. Word has length 249 [2023-12-21 11:28:58,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:28:58,248 INFO L495 AbstractCegarLoop]: Abstraction has 29850 states and 36673 transitions. [2023-12-21 11:28:58,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-21 11:28:58,248 INFO L276 IsEmpty]: Start isEmpty. Operand 29850 states and 36673 transitions. [2023-12-21 11:28:58,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2023-12-21 11:28:58,266 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:28:58,266 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, 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 11:28:58,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2023-12-21 11:28:58,266 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:28:58,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:28:58,267 INFO L85 PathProgramCache]: Analyzing trace with hash -777794569, now seen corresponding path program 1 times [2023-12-21 11:28:58,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:28:58,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650524167] [2023-12-21 11:28:58,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:28:58,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:28:58,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:58,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:28:58,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:58,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:28:58,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:58,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-21 11:28:58,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:58,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-21 11:28:58,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:58,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 11:28:58,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:58,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 11:28:58,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:58,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 11:28:58,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:58,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 11:28:58,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:58,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 11:28:58,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:58,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 11:28:58,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:58,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 11:28:58,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:58,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-21 11:28:58,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:58,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-21 11:28:58,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:58,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-12-21 11:28:58,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:58,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-21 11:28:58,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:58,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-12-21 11:28:58,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:58,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2023-12-21 11:28:58,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:58,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2023-12-21 11:28:58,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:58,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2023-12-21 11:28:58,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:58,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2023-12-21 11:28:58,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:58,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2023-12-21 11:28:58,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:58,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2023-12-21 11:28:58,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:58,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-12-21 11:28:58,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:58,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2023-12-21 11:28:58,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:58,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2023-12-21 11:28:58,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:58,935 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 49 proven. 42 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2023-12-21 11:28:58,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:28:58,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650524167] [2023-12-21 11:28:58,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650524167] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:28:58,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268346828] [2023-12-21 11:28:58,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:28:58,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:28:58,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:28:58,936 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 11:28:58,938 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 11:28:59,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:59,121 INFO L262 TraceCheckSpWp]: Trace formula consists of 977 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 11:28:59,125 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:28:59,350 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 196 proven. 62 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-21 11:28:59,350 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:28:59,546 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 70 proven. 23 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2023-12-21 11:28:59,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268346828] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:28:59,546 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:28:59,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 19 [2023-12-21 11:28:59,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870435491] [2023-12-21 11:28:59,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:28:59,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-21 11:28:59,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:28:59,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-21 11:28:59,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2023-12-21 11:28:59,547 INFO L87 Difference]: Start difference. First operand 29850 states and 36673 transitions. Second operand has 19 states, 19 states have (on average 15.052631578947368) internal successors, (286), 18 states have internal predecessors, (286), 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 11:29:09,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:29:09,354 INFO L93 Difference]: Finished difference Result 59159 states and 72694 transitions. [2023-12-21 11:29:09,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-12-21 11:29:09,355 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 15.052631578947368) internal successors, (286), 18 states have internal predecessors, (286), 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 249 [2023-12-21 11:29:09,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:29:09,420 INFO L225 Difference]: With dead ends: 59159 [2023-12-21 11:29:09,420 INFO L226 Difference]: Without dead ends: 31086 [2023-12-21 11:29:09,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 615 GetRequests, 553 SyntacticMatches, 4 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 891 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=698, Invalid=2842, Unknown=0, NotChecked=0, Total=3540 [2023-12-21 11:29:09,450 INFO L413 NwaCegarLoop]: 408 mSDtfsCounter, 2399 mSDsluCounter, 3816 mSDsCounter, 0 mSdLazyCounter, 1978 mSolverCounterSat, 880 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2399 SdHoareTripleChecker+Valid, 4224 SdHoareTripleChecker+Invalid, 2858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 880 IncrementalHoareTripleChecker+Valid, 1978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-21 11:29:09,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2399 Valid, 4224 Invalid, 2858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [880 Valid, 1978 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-21 11:29:09,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31086 states. [2023-12-21 11:29:17,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31086 to 29850. [2023-12-21 11:29:17,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29850 states, 22431 states have (on average 1.2304400160492177) internal successors, (27600), 22643 states have internal predecessors, (27600), 4487 states have call successors, (4487), 2929 states have call predecessors, (4487), 2931 states have return successors, (4489), 4277 states have call predecessors, (4489), 4487 states have call successors, (4489) [2023-12-21 11:29:17,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29850 states to 29850 states and 36576 transitions. [2023-12-21 11:29:17,486 INFO L78 Accepts]: Start accepts. Automaton has 29850 states and 36576 transitions. Word has length 249 [2023-12-21 11:29:17,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:29:17,486 INFO L495 AbstractCegarLoop]: Abstraction has 29850 states and 36576 transitions. [2023-12-21 11:29:17,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 15.052631578947368) internal successors, (286), 18 states have internal predecessors, (286), 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 11:29:17,487 INFO L276 IsEmpty]: Start isEmpty. Operand 29850 states and 36576 transitions. [2023-12-21 11:29:17,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2023-12-21 11:29:17,502 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:29:17,502 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, 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] [2023-12-21 11:29:17,507 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 11:29:17,702 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 11:29:17,703 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:29:17,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:29:17,703 INFO L85 PathProgramCache]: Analyzing trace with hash 440274510, now seen corresponding path program 1 times [2023-12-21 11:29:17,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:29:17,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668717539] [2023-12-21 11:29:17,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:29:17,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:29:17,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:18,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:29:18,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:18,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-21 11:29:18,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:18,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-21 11:29:18,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:18,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-21 11:29:18,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:18,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 11:29:18,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:18,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-21 11:29:18,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:18,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 11:29:18,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:18,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 11:29:18,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:18,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 11:29:18,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:18,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 11:29:18,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:18,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-21 11:29:18,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:18,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-21 11:29:18,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:18,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-21 11:29:18,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:18,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-21 11:29:18,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:18,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-21 11:29:18,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:18,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-12-21 11:29:18,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:18,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2023-12-21 11:29:18,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:18,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2023-12-21 11:29:18,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:18,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-12-21 11:29:18,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:18,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2023-12-21 11:29:18,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:18,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2023-12-21 11:29:18,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:18,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2023-12-21 11:29:18,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:18,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2023-12-21 11:29:18,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:18,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2023-12-21 11:29:18,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:18,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2023-12-21 11:29:18,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:18,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2023-12-21 11:29:18,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:18,724 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 42 proven. 37 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-12-21 11:29:18,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:29:18,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668717539] [2023-12-21 11:29:18,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668717539] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:29:18,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399552267] [2023-12-21 11:29:18,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:29:18,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:29:18,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:29:18,729 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 11:29:18,733 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 11:29:18,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:18,926 INFO L262 TraceCheckSpWp]: Trace formula consists of 1007 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 11:29:18,930 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:29:19,169 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 171 proven. 76 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-12-21 11:29:19,169 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:29:19,612 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 66 proven. 23 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2023-12-21 11:29:19,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399552267] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:29:19,613 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:29:19,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8, 8] total 22 [2023-12-21 11:29:19,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185712407] [2023-12-21 11:29:19,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:29:19,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-21 11:29:19,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:29:19,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-21 11:29:19,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=410, Unknown=0, NotChecked=0, Total=462 [2023-12-21 11:29:19,614 INFO L87 Difference]: Start difference. First operand 29850 states and 36576 transitions. Second operand has 22 states, 22 states have (on average 13.0) internal successors, (286), 21 states have internal predecessors, (286), 9 states have call successors, (71), 4 states have call predecessors, (71), 6 states have return successors, (71), 10 states have call predecessors, (71), 9 states have call successors, (71) [2023-12-21 11:29:31,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:29:31,319 INFO L93 Difference]: Finished difference Result 59178 states and 72532 transitions. [2023-12-21 11:29:31,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2023-12-21 11:29:31,320 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 13.0) internal successors, (286), 21 states have internal predecessors, (286), 9 states have call successors, (71), 4 states have call predecessors, (71), 6 states have return successors, (71), 10 states have call predecessors, (71), 9 states have call successors, (71) Word has length 254 [2023-12-21 11:29:31,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:29:31,378 INFO L225 Difference]: With dead ends: 59178 [2023-12-21 11:29:31,379 INFO L226 Difference]: Without dead ends: 31038 [2023-12-21 11:29:31,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 675 GetRequests, 576 SyntacticMatches, 4 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2980 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1204, Invalid=8108, Unknown=0, NotChecked=0, Total=9312 [2023-12-21 11:29:31,405 INFO L413 NwaCegarLoop]: 681 mSDtfsCounter, 2488 mSDsluCounter, 6944 mSDsCounter, 0 mSdLazyCounter, 3689 mSolverCounterSat, 804 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2488 SdHoareTripleChecker+Valid, 7625 SdHoareTripleChecker+Invalid, 4493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 804 IncrementalHoareTripleChecker+Valid, 3689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:29:31,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2488 Valid, 7625 Invalid, 4493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [804 Valid, 3689 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-21 11:29:31,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31038 states. [2023-12-21 11:29:39,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31038 to 30019. [2023-12-21 11:29:39,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30019 states, 22563 states have (on average 1.2251473651553428) internal successors, (27643), 22776 states have internal predecessors, (27643), 4509 states have call successors, (4509), 2944 states have call predecessors, (4509), 2946 states have return successors, (4511), 4298 states have call predecessors, (4511), 4509 states have call successors, (4511) [2023-12-21 11:29:39,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30019 states to 30019 states and 36663 transitions. [2023-12-21 11:29:39,327 INFO L78 Accepts]: Start accepts. Automaton has 30019 states and 36663 transitions. Word has length 254 [2023-12-21 11:29:39,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:29:39,327 INFO L495 AbstractCegarLoop]: Abstraction has 30019 states and 36663 transitions. [2023-12-21 11:29:39,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 13.0) internal successors, (286), 21 states have internal predecessors, (286), 9 states have call successors, (71), 4 states have call predecessors, (71), 6 states have return successors, (71), 10 states have call predecessors, (71), 9 states have call successors, (71) [2023-12-21 11:29:39,327 INFO L276 IsEmpty]: Start isEmpty. Operand 30019 states and 36663 transitions. [2023-12-21 11:29:39,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2023-12-21 11:29:39,341 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:29:39,342 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, 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 11:29:39,347 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 11:29:39,542 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 11:29:39,542 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:29:39,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:29:39,543 INFO L85 PathProgramCache]: Analyzing trace with hash -332798017, now seen corresponding path program 1 times [2023-12-21 11:29:39,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:29:39,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22089231] [2023-12-21 11:29:39,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:29:39,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:29:39,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:40,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:29:40,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:40,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-21 11:29:40,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:40,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-21 11:29:40,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:40,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-21 11:29:40,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:40,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 11:29:40,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:40,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-21 11:29:40,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:40,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 11:29:40,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:40,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 11:29:40,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:40,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 11:29:40,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:40,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 11:29:40,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:40,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-21 11:29:40,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:40,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-21 11:29:40,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:40,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-21 11:29:40,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:40,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-21 11:29:40,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:40,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-21 11:29:40,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:40,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-12-21 11:29:40,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:40,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2023-12-21 11:29:40,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:40,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2023-12-21 11:29:40,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:40,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-12-21 11:29:40,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:40,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2023-12-21 11:29:40,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:40,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2023-12-21 11:29:40,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:40,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2023-12-21 11:29:40,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:40,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-12-21 11:29:40,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:40,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2023-12-21 11:29:40,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:40,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2023-12-21 11:29:40,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:40,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2023-12-21 11:29:40,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:40,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2023-12-21 11:29:40,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:40,455 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 39 proven. 41 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2023-12-21 11:29:40,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:29:40,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22089231] [2023-12-21 11:29:40,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22089231] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:29:40,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846896303] [2023-12-21 11:29:40,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:29:40,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:29:40,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:29:40,456 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 11:29:40,458 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 11:29:40,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:40,656 INFO L262 TraceCheckSpWp]: Trace formula consists of 1027 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-21 11:29:40,660 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:29:40,898 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 252 proven. 42 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-21 11:29:40,899 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:29:41,144 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 75 proven. 17 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2023-12-21 11:29:41,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846896303] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:29:41,145 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:29:41,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 10, 10] total 28 [2023-12-21 11:29:41,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670752371] [2023-12-21 11:29:41,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:29:41,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-21 11:29:41,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:29:41,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-21 11:29:41,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2023-12-21 11:29:41,147 INFO L87 Difference]: Start difference. First operand 30019 states and 36663 transitions. Second operand has 28 states, 28 states have (on average 10.464285714285714) internal successors, (293), 25 states have internal predecessors, (293), 10 states have call successors, (68), 4 states have call predecessors, (68), 8 states have return successors, (69), 13 states have call predecessors, (69), 10 states have call successors, (69) [2023-12-21 11:29:56,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:29:56,579 INFO L93 Difference]: Finished difference Result 67202 states and 82298 transitions. [2023-12-21 11:29:56,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2023-12-21 11:29:56,580 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 10.464285714285714) internal successors, (293), 25 states have internal predecessors, (293), 10 states have call successors, (68), 4 states have call predecessors, (68), 8 states have return successors, (69), 13 states have call predecessors, (69), 10 states have call successors, (69) Word has length 262 [2023-12-21 11:29:56,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:29:56,657 INFO L225 Difference]: With dead ends: 67202 [2023-12-21 11:29:56,657 INFO L226 Difference]: Without dead ends: 33518 [2023-12-21 11:29:56,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 688 GetRequests, 588 SyntacticMatches, 1 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2832 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=802, Invalid=9298, Unknown=0, NotChecked=0, Total=10100 [2023-12-21 11:29:56,692 INFO L413 NwaCegarLoop]: 883 mSDtfsCounter, 1439 mSDsluCounter, 13248 mSDsCounter, 0 mSdLazyCounter, 6702 mSolverCounterSat, 471 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1447 SdHoareTripleChecker+Valid, 14131 SdHoareTripleChecker+Invalid, 7173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 471 IncrementalHoareTripleChecker+Valid, 6702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-21 11:29:56,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1447 Valid, 14131 Invalid, 7173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [471 Valid, 6702 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-21 11:29:56,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33518 states. [2023-12-21 11:30:04,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33518 to 27106. [2023-12-21 11:30:04,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27106 states, 20285 states have (on average 1.2159230958836578) internal successors, (24665), 20476 states have internal predecessors, (24665), 4139 states have call successors, (4139), 2679 states have call predecessors, (4139), 2681 states have return successors, (4133), 3950 states have call predecessors, (4133), 4131 states have call successors, (4133) [2023-12-21 11:30:04,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27106 states to 27106 states and 32937 transitions. [2023-12-21 11:30:04,760 INFO L78 Accepts]: Start accepts. Automaton has 27106 states and 32937 transitions. Word has length 262 [2023-12-21 11:30:04,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:30:04,760 INFO L495 AbstractCegarLoop]: Abstraction has 27106 states and 32937 transitions. [2023-12-21 11:30:04,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 10.464285714285714) internal successors, (293), 25 states have internal predecessors, (293), 10 states have call successors, (68), 4 states have call predecessors, (68), 8 states have return successors, (69), 13 states have call predecessors, (69), 10 states have call successors, (69) [2023-12-21 11:30:04,760 INFO L276 IsEmpty]: Start isEmpty. Operand 27106 states and 32937 transitions. [2023-12-21 11:30:04,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2023-12-21 11:30:04,774 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:30:04,774 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, 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] [2023-12-21 11:30:04,779 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 11:30:04,974 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 11:30:04,975 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:30:04,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:30:04,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1047747723, now seen corresponding path program 1 times [2023-12-21 11:30:04,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:30:04,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752356804] [2023-12-21 11:30:04,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:30:04,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:30:05,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:05,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:30:05,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:05,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:30:05,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:05,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-21 11:30:05,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:05,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-21 11:30:05,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:05,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 11:30:05,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:05,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 11:30:05,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:05,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 11:30:05,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:05,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 11:30:05,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:05,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 11:30:05,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:05,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 11:30:05,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:05,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 11:30:05,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:05,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-21 11:30:05,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:05,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-21 11:30:05,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:05,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-12-21 11:30:05,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:05,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-21 11:30:05,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:05,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-12-21 11:30:05,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:05,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2023-12-21 11:30:05,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:05,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2023-12-21 11:30:05,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:05,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2023-12-21 11:30:05,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:05,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2023-12-21 11:30:05,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:05,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-21 11:30:05,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:05,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2023-12-21 11:30:05,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:05,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2023-12-21 11:30:05,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:05,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2023-12-21 11:30:05,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:05,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2023-12-21 11:30:05,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:05,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2023-12-21 11:30:05,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:05,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2023-12-21 11:30:05,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:05,547 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 54 proven. 36 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2023-12-21 11:30:05,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:30:05,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752356804] [2023-12-21 11:30:05,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752356804] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:30:05,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036858607] [2023-12-21 11:30:05,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:30:05,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:30:05,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:30:05,548 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 11:30:05,550 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 11:30:05,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:05,745 INFO L262 TraceCheckSpWp]: Trace formula consists of 1014 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-21 11:30:05,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:30:05,853 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 280 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2023-12-21 11:30:05,854 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 11:30:05,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036858607] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:30:05,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 11:30:05,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2023-12-21 11:30:05,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52854951] [2023-12-21 11:30:05,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:30:05,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:30:05,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:30:05,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:30:05,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2023-12-21 11:30:05,855 INFO L87 Difference]: Start difference. First operand 27106 states and 32937 transitions. Second operand has 7 states, 7 states have (on average 25.142857142857142) internal successors, (176), 6 states have internal predecessors, (176), 3 states have call successors, (27), 3 states have call predecessors, (27), 4 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) [2023-12-21 11:30:12,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:30:12,924 INFO L93 Difference]: Finished difference Result 50122 states and 60739 transitions. [2023-12-21 11:30:12,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 11:30:12,924 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.142857142857142) internal successors, (176), 6 states have internal predecessors, (176), 3 states have call successors, (27), 3 states have call predecessors, (27), 4 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) Word has length 263 [2023-12-21 11:30:12,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:30:12,980 INFO L225 Difference]: With dead ends: 50122 [2023-12-21 11:30:12,980 INFO L226 Difference]: Without dead ends: 24588 [2023-12-21 11:30:13,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2023-12-21 11:30:13,008 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 467 mSDsluCounter, 1102 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 467 SdHoareTripleChecker+Valid, 1444 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 11:30:13,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [467 Valid, 1444 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 11:30:13,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24588 states. [2023-12-21 11:30:19,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24588 to 23925. [2023-12-21 11:30:19,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23925 states, 17997 states have (on average 1.2023114963605046) internal successors, (21638), 18166 states have internal predecessors, (21638), 3532 states have call successors, (3532), 2394 states have call predecessors, (3532), 2395 states have return successors, (3529), 3364 states have call predecessors, (3529), 3527 states have call successors, (3529) [2023-12-21 11:30:19,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23925 states to 23925 states and 28699 transitions. [2023-12-21 11:30:19,901 INFO L78 Accepts]: Start accepts. Automaton has 23925 states and 28699 transitions. Word has length 263 [2023-12-21 11:30:19,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:30:19,901 INFO L495 AbstractCegarLoop]: Abstraction has 23925 states and 28699 transitions. [2023-12-21 11:30:19,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.142857142857142) internal successors, (176), 6 states have internal predecessors, (176), 3 states have call successors, (27), 3 states have call predecessors, (27), 4 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) [2023-12-21 11:30:19,901 INFO L276 IsEmpty]: Start isEmpty. Operand 23925 states and 28699 transitions. [2023-12-21 11:30:19,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2023-12-21 11:30:19,915 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:30:19,915 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, 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] [2023-12-21 11:30:19,921 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 11:30:20,115 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 11:30:20,116 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:30:20,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:30:20,116 INFO L85 PathProgramCache]: Analyzing trace with hash 2057828026, now seen corresponding path program 1 times [2023-12-21 11:30:20,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:30:20,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439242176] [2023-12-21 11:30:20,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:30:20,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:30:20,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:20,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:30:20,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:20,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:30:20,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:20,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-21 11:30:20,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:20,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-21 11:30:20,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:20,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 11:30:20,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:20,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 11:30:20,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:20,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 11:30:20,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:20,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 11:30:20,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:20,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 11:30:20,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:20,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 11:30:20,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:20,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 11:30:20,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:20,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-21 11:30:20,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:20,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-21 11:30:20,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:20,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-12-21 11:30:20,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:20,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-21 11:30:20,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:20,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-12-21 11:30:20,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:20,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2023-12-21 11:30:20,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:20,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2023-12-21 11:30:20,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:20,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2023-12-21 11:30:20,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:20,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2023-12-21 11:30:20,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:20,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2023-12-21 11:30:20,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:20,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2023-12-21 11:30:20,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:20,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2023-12-21 11:30:20,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:20,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2023-12-21 11:30:20,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:20,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-12-21 11:30:20,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:20,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2023-12-21 11:30:20,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:20,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2023-12-21 11:30:20,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:20,730 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 54 proven. 36 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2023-12-21 11:30:20,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:30:20,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439242176] [2023-12-21 11:30:20,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439242176] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:30:20,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115838796] [2023-12-21 11:30:20,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:30:20,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:30:20,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:30:20,732 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 11:30:20,733 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 11:30:20,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:20,909 INFO L262 TraceCheckSpWp]: Trace formula consists of 1017 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-21 11:30:20,912 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:30:21,265 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 141 proven. 156 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-12-21 11:30:21,265 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:30:21,478 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 62 proven. 28 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2023-12-21 11:30:21,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115838796] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:30:21,478 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:30:21,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 7] total 21 [2023-12-21 11:30:21,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706368582] [2023-12-21 11:30:21,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:30:21,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-21 11:30:21,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:30:21,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-21 11:30:21,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2023-12-21 11:30:21,480 INFO L87 Difference]: Start difference. First operand 23925 states and 28699 transitions. Second operand has 21 states, 21 states have (on average 17.428571428571427) internal successors, (366), 21 states have internal predecessors, (366), 11 states have call successors, (77), 6 states have call predecessors, (77), 7 states have return successors, (76), 11 states have call predecessors, (76), 11 states have call successors, (76) [2023-12-21 11:30:30,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:30:30,189 INFO L93 Difference]: Finished difference Result 46804 states and 56277 transitions. [2023-12-21 11:30:30,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-21 11:30:30,189 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 17.428571428571427) internal successors, (366), 21 states have internal predecessors, (366), 11 states have call successors, (77), 6 states have call predecessors, (77), 7 states have return successors, (76), 11 states have call predecessors, (76), 11 states have call successors, (76) Word has length 264 [2023-12-21 11:30:30,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:30:30,245 INFO L225 Difference]: With dead ends: 46804 [2023-12-21 11:30:30,246 INFO L226 Difference]: Without dead ends: 24493 [2023-12-21 11:30:30,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 651 GetRequests, 587 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1099 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=669, Invalid=3621, Unknown=0, NotChecked=0, Total=4290 [2023-12-21 11:30:30,268 INFO L413 NwaCegarLoop]: 400 mSDtfsCounter, 1175 mSDsluCounter, 3411 mSDsCounter, 0 mSdLazyCounter, 1929 mSolverCounterSat, 382 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1175 SdHoareTripleChecker+Valid, 3811 SdHoareTripleChecker+Invalid, 2311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 382 IncrementalHoareTripleChecker+Valid, 1929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 11:30:30,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1175 Valid, 3811 Invalid, 2311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [382 Valid, 1929 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 11:30:30,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24493 states. [2023-12-21 11:30:37,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24493 to 23913. [2023-12-21 11:30:37,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23913 states, 17981 states have (on average 1.1985985206606975) internal successors, (21552), 18152 states have internal predecessors, (21552), 3534 states have call successors, (3534), 2396 states have call predecessors, (3534), 2397 states have return successors, (3531), 3364 states have call predecessors, (3531), 3529 states have call successors, (3531) [2023-12-21 11:30:37,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23913 states to 23913 states and 28617 transitions. [2023-12-21 11:30:37,119 INFO L78 Accepts]: Start accepts. Automaton has 23913 states and 28617 transitions. Word has length 264 [2023-12-21 11:30:37,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:30:37,119 INFO L495 AbstractCegarLoop]: Abstraction has 23913 states and 28617 transitions. [2023-12-21 11:30:37,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 17.428571428571427) internal successors, (366), 21 states have internal predecessors, (366), 11 states have call successors, (77), 6 states have call predecessors, (77), 7 states have return successors, (76), 11 states have call predecessors, (76), 11 states have call successors, (76) [2023-12-21 11:30:37,119 INFO L276 IsEmpty]: Start isEmpty. Operand 23913 states and 28617 transitions. [2023-12-21 11:30:37,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2023-12-21 11:30:37,134 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:30:37,134 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:30:37,140 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-12-21 11:30:37,335 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 11:30:37,335 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:30:37,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:30:37,336 INFO L85 PathProgramCache]: Analyzing trace with hash -778579044, now seen corresponding path program 1 times [2023-12-21 11:30:37,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:30:37,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660053460] [2023-12-21 11:30:37,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:30:37,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:30:37,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:37,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:30:37,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:37,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-21 11:30:37,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:37,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-21 11:30:37,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:37,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-21 11:30:37,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:37,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 11:30:37,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:37,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-21 11:30:37,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:37,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 11:30:37,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:37,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 11:30:37,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:37,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 11:30:37,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:37,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 11:30:37,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:37,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 11:30:37,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:37,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 11:30:37,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:37,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-21 11:30:37,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:37,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-12-21 11:30:37,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:37,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2023-12-21 11:30:37,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:37,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-12-21 11:30:37,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:37,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2023-12-21 11:30:37,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:37,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2023-12-21 11:30:37,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:37,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2023-12-21 11:30:37,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:37,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2023-12-21 11:30:37,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:37,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2023-12-21 11:30:37,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:37,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-12-21 11:30:37,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:37,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2023-12-21 11:30:37,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:37,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2023-12-21 11:30:37,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:37,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2023-12-21 11:30:37,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:37,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2023-12-21 11:30:37,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:37,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2023-12-21 11:30:37,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:37,716 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 11:30:37,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:30:37,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660053460] [2023-12-21 11:30:37,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660053460] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:30:37,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274487262] [2023-12-21 11:30:37,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:30:37,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:30:37,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:30:37,718 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 11:30:37,719 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 11:30:38,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:38,029 INFO L262 TraceCheckSpWp]: Trace formula consists of 1035 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-21 11:30:38,033 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:30:38,709 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 162 proven. 118 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-12-21 11:30:38,709 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:30:39,765 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 50 proven. 29 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2023-12-21 11:30:39,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274487262] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:30:39,766 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:30:39,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 10] total 20 [2023-12-21 11:30:39,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825511078] [2023-12-21 11:30:39,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:30:39,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-21 11:30:39,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:30:39,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-21 11:30:39,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2023-12-21 11:30:39,767 INFO L87 Difference]: Start difference. First operand 23913 states and 28617 transitions. Second operand has 20 states, 20 states have (on average 19.4) internal successors, (388), 20 states have internal predecessors, (388), 13 states have call successors, (77), 6 states have call predecessors, (77), 6 states have return successors, (76), 13 states have call predecessors, (76), 13 states have call successors, (76) [2023-12-21 11:30:47,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:30:47,333 INFO L93 Difference]: Finished difference Result 46397 states and 55804 transitions. [2023-12-21 11:30:47,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-21 11:30:47,333 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 19.4) internal successors, (388), 20 states have internal predecessors, (388), 13 states have call successors, (77), 6 states have call predecessors, (77), 6 states have return successors, (76), 13 states have call predecessors, (76), 13 states have call successors, (76) Word has length 267 [2023-12-21 11:30:47,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:30:47,382 INFO L225 Difference]: With dead ends: 46397 [2023-12-21 11:30:47,382 INFO L226 Difference]: Without dead ends: 23928 [2023-12-21 11:30:47,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 625 GetRequests, 587 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=420, Invalid=1140, Unknown=0, NotChecked=0, Total=1560 [2023-12-21 11:30:47,406 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 1546 mSDsluCounter, 1096 mSDsCounter, 0 mSdLazyCounter, 788 mSolverCounterSat, 487 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1546 SdHoareTripleChecker+Valid, 1383 SdHoareTripleChecker+Invalid, 1275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 487 IncrementalHoareTripleChecker+Valid, 788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 11:30:47,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1546 Valid, 1383 Invalid, 1275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [487 Valid, 788 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 11:30:47,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23928 states. [2023-12-21 11:30:54,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23928 to 23452. [2023-12-21 11:30:54,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23452 states, 17632 states have (on average 1.1992400181488203) internal successors, (21145), 17800 states have internal predecessors, (21145), 3473 states have call successors, (3473), 2345 states have call predecessors, (3473), 2346 states have return successors, (3470), 3306 states have call predecessors, (3470), 3468 states have call successors, (3470) [2023-12-21 11:30:54,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23452 states to 23452 states and 28088 transitions. [2023-12-21 11:30:54,144 INFO L78 Accepts]: Start accepts. Automaton has 23452 states and 28088 transitions. Word has length 267 [2023-12-21 11:30:54,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:30:54,144 INFO L495 AbstractCegarLoop]: Abstraction has 23452 states and 28088 transitions. [2023-12-21 11:30:54,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 19.4) internal successors, (388), 20 states have internal predecessors, (388), 13 states have call successors, (77), 6 states have call predecessors, (77), 6 states have return successors, (76), 13 states have call predecessors, (76), 13 states have call successors, (76) [2023-12-21 11:30:54,144 INFO L276 IsEmpty]: Start isEmpty. Operand 23452 states and 28088 transitions. [2023-12-21 11:30:54,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2023-12-21 11:30:54,159 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:30:54,159 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] [2023-12-21 11:30:54,168 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 11:30:54,367 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 11:30:54,368 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:30:54,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:30:54,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1805291817, now seen corresponding path program 1 times [2023-12-21 11:30:54,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:30:54,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034443466] [2023-12-21 11:30:54,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:30:54,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:30:54,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:55,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:30:55,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:55,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-21 11:30:55,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:55,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-21 11:30:55,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:55,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-21 11:30:55,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:55,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 11:30:55,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:55,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-21 11:30:55,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:55,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 11:30:55,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:55,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 11:30:55,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:55,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 11:30:55,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:55,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 11:30:55,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:55,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 11:30:55,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:55,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 11:30:55,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:55,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-21 11:30:55,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:55,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-12-21 11:30:55,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:55,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2023-12-21 11:30:55,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:55,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-12-21 11:30:55,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:55,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2023-12-21 11:30:55,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:55,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2023-12-21 11:30:55,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:55,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2023-12-21 11:30:55,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:55,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2023-12-21 11:30:55,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:55,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2023-12-21 11:30:55,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:55,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-12-21 11:30:55,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:55,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2023-12-21 11:30:55,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:55,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2023-12-21 11:30:55,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:55,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2023-12-21 11:30:55,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:55,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2023-12-21 11:30:55,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:55,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2023-12-21 11:30:55,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:55,131 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 26 proven. 54 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2023-12-21 11:30:55,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:30:55,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034443466] [2023-12-21 11:30:55,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034443466] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:30:55,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917442636] [2023-12-21 11:30:55,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:30:55,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:30:55,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:30:55,137 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 11:30:55,139 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 11:30:55,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:55,350 INFO L262 TraceCheckSpWp]: Trace formula consists of 1037 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-21 11:30:55,354 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:30:55,939 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 120 proven. 161 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-12-21 11:30:55,939 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:30:56,920 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 26 proven. 54 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2023-12-21 11:30:56,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917442636] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:30:56,921 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:30:56,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 12] total 32 [2023-12-21 11:30:56,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938470975] [2023-12-21 11:30:56,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:30:56,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-21 11:30:56,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:30:56,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-21 11:30:56,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=873, Unknown=0, NotChecked=0, Total=992 [2023-12-21 11:30:56,923 INFO L87 Difference]: Start difference. First operand 23452 states and 28088 transitions. Second operand has 32 states, 32 states have (on average 11.5625) internal successors, (370), 32 states have internal predecessors, (370), 13 states have call successors, (76), 7 states have call predecessors, (76), 7 states have return successors, (75), 13 states have call predecessors, (75), 13 states have call successors, (75) [2023-12-21 11:31:08,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:31:08,430 INFO L93 Difference]: Finished difference Result 51030 states and 61396 transitions. [2023-12-21 11:31:08,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-12-21 11:31:08,430 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 11.5625) internal successors, (370), 32 states have internal predecessors, (370), 13 states have call successors, (76), 7 states have call predecessors, (76), 7 states have return successors, (75), 13 states have call predecessors, (75), 13 states have call successors, (75) Word has length 268 [2023-12-21 11:31:08,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:31:08,490 INFO L225 Difference]: With dead ends: 51030 [2023-12-21 11:31:08,490 INFO L226 Difference]: Without dead ends: 29016 [2023-12-21 11:31:08,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 657 GetRequests, 579 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1717 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=952, Invalid=5368, Unknown=0, NotChecked=0, Total=6320 [2023-12-21 11:31:08,513 INFO L413 NwaCegarLoop]: 556 mSDtfsCounter, 1567 mSDsluCounter, 5959 mSDsCounter, 0 mSdLazyCounter, 4298 mSolverCounterSat, 446 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1567 SdHoareTripleChecker+Valid, 6515 SdHoareTripleChecker+Invalid, 4744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 446 IncrementalHoareTripleChecker+Valid, 4298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-21 11:31:08,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1567 Valid, 6515 Invalid, 4744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [446 Valid, 4298 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-21 11:31:08,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29016 states. [2023-12-21 11:31:15,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29016 to 25522. [2023-12-21 11:31:15,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25522 states, 19276 states have (on average 1.204347374974061) internal successors, (23215), 19466 states have internal predecessors, (23215), 3718 states have call successors, (3718), 2524 states have call predecessors, (3718), 2527 states have return successors, (3717), 3531 states have call predecessors, (3717), 3713 states have call successors, (3717) [2023-12-21 11:31:16,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25522 states to 25522 states and 30650 transitions. [2023-12-21 11:31:16,018 INFO L78 Accepts]: Start accepts. Automaton has 25522 states and 30650 transitions. Word has length 268 [2023-12-21 11:31:16,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:31:16,018 INFO L495 AbstractCegarLoop]: Abstraction has 25522 states and 30650 transitions. [2023-12-21 11:31:16,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 11.5625) internal successors, (370), 32 states have internal predecessors, (370), 13 states have call successors, (76), 7 states have call predecessors, (76), 7 states have return successors, (75), 13 states have call predecessors, (75), 13 states have call successors, (75) [2023-12-21 11:31:16,019 INFO L276 IsEmpty]: Start isEmpty. Operand 25522 states and 30650 transitions. [2023-12-21 11:31:16,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2023-12-21 11:31:16,034 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:31:16,034 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, 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 11:31:16,040 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 11:31:16,234 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 11:31:16,234 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:31:16,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:31:16,235 INFO L85 PathProgramCache]: Analyzing trace with hash -290653168, now seen corresponding path program 1 times [2023-12-21 11:31:16,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:31:16,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282391181] [2023-12-21 11:31:16,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:31:16,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:31:16,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:17,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:31:17,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:17,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-21 11:31:17,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:17,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-21 11:31:17,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:17,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-21 11:31:17,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:17,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 11:31:17,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:17,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-21 11:31:17,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:17,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 11:31:17,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:17,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 11:31:17,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:17,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 11:31:17,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:17,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 11:31:17,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:17,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 11:31:17,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:17,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 11:31:17,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:17,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-21 11:31:17,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:17,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-12-21 11:31:17,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:17,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-21 11:31:17,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:17,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-12-21 11:31:17,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:17,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-12-21 11:31:17,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:17,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2023-12-21 11:31:17,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:17,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2023-12-21 11:31:17,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:17,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2023-12-21 11:31:17,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:17,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2023-12-21 11:31:17,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:17,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2023-12-21 11:31:17,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:17,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2023-12-21 11:31:17,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:17,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2023-12-21 11:31:17,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:17,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-12-21 11:31:17,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:17,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2023-12-21 11:31:17,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:17,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2023-12-21 11:31:17,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:17,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2023-12-21 11:31:17,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:17,157 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 45 proven. 35 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2023-12-21 11:31:17,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:31:17,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282391181] [2023-12-21 11:31:17,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282391181] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:31:17,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969659444] [2023-12-21 11:31:17,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:31:17,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:31:17,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:31:17,158 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 11:31:17,160 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 11:31:17,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:17,361 INFO L262 TraceCheckSpWp]: Trace formula consists of 1051 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-21 11:31:17,365 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:31:17,998 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 133 proven. 148 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-12-21 11:31:17,999 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:31:18,515 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 51 proven. 29 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2023-12-21 11:31:18,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969659444] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:31:18,515 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:31:18,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 11] total 32 [2023-12-21 11:31:18,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820501130] [2023-12-21 11:31:18,515 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:31:18,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-21 11:31:18,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:31:18,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-21 11:31:18,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=891, Unknown=0, NotChecked=0, Total=992 [2023-12-21 11:31:18,517 INFO L87 Difference]: Start difference. First operand 25522 states and 30650 transitions. Second operand has 32 states, 29 states have (on average 14.517241379310345) internal successors, (421), 29 states have internal predecessors, (421), 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 11:31:33,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:31:33,801 INFO L93 Difference]: Finished difference Result 57965 states and 69654 transitions. [2023-12-21 11:31:33,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2023-12-21 11:31:33,802 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 29 states have (on average 14.517241379310345) internal successors, (421), 29 states have internal predecessors, (421), 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 272 [2023-12-21 11:31:33,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:31:33,872 INFO L225 Difference]: With dead ends: 57965 [2023-12-21 11:31:33,872 INFO L226 Difference]: Without dead ends: 33858 [2023-12-21 11:31:33,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 810 GetRequests, 630 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11657 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=3154, Invalid=29788, Unknown=0, NotChecked=0, Total=32942 [2023-12-21 11:31:33,901 INFO L413 NwaCegarLoop]: 551 mSDtfsCounter, 1822 mSDsluCounter, 6864 mSDsCounter, 0 mSdLazyCounter, 4265 mSolverCounterSat, 570 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1822 SdHoareTripleChecker+Valid, 7415 SdHoareTripleChecker+Invalid, 4835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 570 IncrementalHoareTripleChecker+Valid, 4265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:31:33,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1822 Valid, 7415 Invalid, 4835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [570 Valid, 4265 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-21 11:31:33,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33858 states. [2023-12-21 11:31:42,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33858 to 29378. [2023-12-21 11:31:42,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29378 states, 22248 states have (on average 1.206445523193096) internal successors, (26841), 22457 states have internal predecessors, (26841), 4186 states have call successors, (4186), 2905 states have call predecessors, (4186), 2943 states have return successors, (4220), 4015 states have call predecessors, (4220), 4181 states have call successors, (4220) [2023-12-21 11:31:42,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29378 states to 29378 states and 35247 transitions. [2023-12-21 11:31:42,304 INFO L78 Accepts]: Start accepts. Automaton has 29378 states and 35247 transitions. Word has length 272 [2023-12-21 11:31:42,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:31:42,304 INFO L495 AbstractCegarLoop]: Abstraction has 29378 states and 35247 transitions. [2023-12-21 11:31:42,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 29 states have (on average 14.517241379310345) internal successors, (421), 29 states have internal predecessors, (421), 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 11:31:42,304 INFO L276 IsEmpty]: Start isEmpty. Operand 29378 states and 35247 transitions. [2023-12-21 11:31:42,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2023-12-21 11:31:42,317 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:31:42,317 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, 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 11:31:42,324 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 11:31:42,517 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 11:31:42,518 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:31:42,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:31:42,518 INFO L85 PathProgramCache]: Analyzing trace with hash 493250593, now seen corresponding path program 1 times [2023-12-21 11:31:42,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:31:42,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683888371] [2023-12-21 11:31:42,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:31:42,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:31:42,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:43,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:31:43,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:43,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-21 11:31:43,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:43,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-21 11:31:43,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:43,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-21 11:31:43,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:43,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 11:31:43,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:43,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-21 11:31:43,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:43,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 11:31:43,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:43,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 11:31:43,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:43,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 11:31:43,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:43,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 11:31:43,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:43,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 11:31:43,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:43,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 11:31:43,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:43,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-21 11:31:43,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:43,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-12-21 11:31:43,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:43,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2023-12-21 11:31:43,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:43,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-12-21 11:31:43,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:43,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2023-12-21 11:31:43,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:43,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2023-12-21 11:31:43,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:43,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2023-12-21 11:31:43,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:43,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2023-12-21 11:31:43,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:43,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2023-12-21 11:31:43,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:43,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-12-21 11:31:43,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:43,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2023-12-21 11:31:43,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:43,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2023-12-21 11:31:43,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:43,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2023-12-21 11:31:43,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:43,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2023-12-21 11:31:43,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:43,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2023-12-21 11:31:43,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:43,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2023-12-21 11:31:43,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:43,711 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 50 proven. 41 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2023-12-21 11:31:43,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:31:43,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683888371] [2023-12-21 11:31:43,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683888371] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:31:43,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329013794] [2023-12-21 11:31:43,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:31:43,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:31:43,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:31:43,716 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 11:31:43,717 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 11:31:43,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:43,919 INFO L262 TraceCheckSpWp]: Trace formula consists of 1051 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-21 11:31:43,923 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:31:44,618 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 168 proven. 153 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-12-21 11:31:44,618 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:31:47,009 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 38 proven. 53 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2023-12-21 11:31:47,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329013794] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:31:47,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:31:47,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 34 [2023-12-21 11:31:47,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272296110] [2023-12-21 11:31:47,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:31:47,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-21 11:31:47,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:31:47,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-21 11:31:47,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1007, Unknown=0, NotChecked=0, Total=1122 [2023-12-21 11:31:47,011 INFO L87 Difference]: Start difference. First operand 29378 states and 35247 transitions. Second operand has 34 states, 34 states have (on average 11.470588235294118) internal successors, (390), 34 states have internal predecessors, (390), 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 11:32:08,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:32:08,622 INFO L93 Difference]: Finished difference Result 71208 states and 85546 transitions. [2023-12-21 11:32:08,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2023-12-21 11:32:08,622 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 11.470588235294118) internal successors, (390), 34 states have internal predecessors, (390), 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 273 [2023-12-21 11:32:08,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:32:08,714 INFO L225 Difference]: With dead ends: 71208 [2023-12-21 11:32:08,714 INFO L226 Difference]: Without dead ends: 43418 [2023-12-21 11:32:08,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 747 GetRequests, 605 SyntacticMatches, 1 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6616 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=2614, Invalid=17692, Unknown=0, NotChecked=0, Total=20306 [2023-12-21 11:32:08,746 INFO L413 NwaCegarLoop]: 556 mSDtfsCounter, 4183 mSDsluCounter, 7105 mSDsCounter, 0 mSdLazyCounter, 5860 mSolverCounterSat, 1362 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4183 SdHoareTripleChecker+Valid, 7661 SdHoareTripleChecker+Invalid, 7222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1362 IncrementalHoareTripleChecker+Valid, 5860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-21 11:32:08,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4183 Valid, 7661 Invalid, 7222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1362 Valid, 5860 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-21 11:32:08,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43418 states. [2023-12-21 11:32:18,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43418 to 31159. [2023-12-21 11:32:18,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31159 states, 23614 states have (on average 1.2080545439146269) internal successors, (28527), 23842 states have internal predecessors, (28527), 4427 states have call successors, (4427), 3079 states have call predecessors, (4427), 3117 states have return successors, (4461), 4237 states have call predecessors, (4461), 4422 states have call successors, (4461) [2023-12-21 11:32:18,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31159 states to 31159 states and 37415 transitions. [2023-12-21 11:32:18,670 INFO L78 Accepts]: Start accepts. Automaton has 31159 states and 37415 transitions. Word has length 273 [2023-12-21 11:32:18,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:32:18,671 INFO L495 AbstractCegarLoop]: Abstraction has 31159 states and 37415 transitions. [2023-12-21 11:32:18,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 11.470588235294118) internal successors, (390), 34 states have internal predecessors, (390), 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 11:32:18,671 INFO L276 IsEmpty]: Start isEmpty. Operand 31159 states and 37415 transitions. [2023-12-21 11:32:18,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2023-12-21 11:32:18,685 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:32:18,685 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, 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] [2023-12-21 11:32:18,692 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2023-12-21 11:32:18,885 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 11:32:18,886 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:32:18,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:32:18,886 INFO L85 PathProgramCache]: Analyzing trace with hash -50702621, now seen corresponding path program 1 times [2023-12-21 11:32:18,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:32:18,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199074011] [2023-12-21 11:32:18,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:32:18,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:32:18,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:19,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:32:19,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:19,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:32:19,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:19,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-21 11:32:19,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:19,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-21 11:32:19,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:19,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 11:32:19,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:19,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 11:32:19,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:19,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 11:32:19,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:19,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 11:32:19,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:19,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 11:32:19,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:19,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 11:32:19,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:19,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 11:32:19,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:19,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-21 11:32:19,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:19,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-21 11:32:19,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:19,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-12-21 11:32:19,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:19,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-21 11:32:19,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:19,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-12-21 11:32:19,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:19,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2023-12-21 11:32:19,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:19,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2023-12-21 11:32:19,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:19,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2023-12-21 11:32:19,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:19,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2023-12-21 11:32:19,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:19,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2023-12-21 11:32:19,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:19,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-12-21 11:32:19,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:19,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2023-12-21 11:32:19,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:19,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-12-21 11:32:19,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:19,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2023-12-21 11:32:19,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:19,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2023-12-21 11:32:19,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:19,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2023-12-21 11:32:19,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:19,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2023-12-21 11:32:19,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:19,291 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 35 proven. 62 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2023-12-21 11:32:19,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:32:19,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199074011] [2023-12-21 11:32:19,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199074011] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:32:19,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503741858] [2023-12-21 11:32:19,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:32:19,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:32:19,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:32:19,293 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 11:32:19,294 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 11:32:19,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:19,493 INFO L262 TraceCheckSpWp]: Trace formula consists of 1037 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-21 11:32:19,498 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:32:20,090 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 180 proven. 126 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-12-21 11:32:20,090 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:32:20,602 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 54 proven. 43 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2023-12-21 11:32:20,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503741858] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:32:20,602 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:32:20,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 9] total 25 [2023-12-21 11:32:20,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771287632] [2023-12-21 11:32:20,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:32:20,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-21 11:32:20,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:32:20,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-21 11:32:20,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=511, Unknown=0, NotChecked=0, Total=600 [2023-12-21 11:32:20,604 INFO L87 Difference]: Start difference. First operand 31159 states and 37415 transitions. Second operand has 25 states, 25 states have (on average 16.0) internal successors, (400), 25 states have internal predecessors, (400), 14 states have call successors, (83), 6 states have call predecessors, (83), 6 states have return successors, (82), 14 states have call predecessors, (82), 14 states have call successors, (82) [2023-12-21 11:32:32,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:32:32,749 INFO L93 Difference]: Finished difference Result 61712 states and 74516 transitions. [2023-12-21 11:32:32,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2023-12-21 11:32:32,749 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 16.0) internal successors, (400), 25 states have internal predecessors, (400), 14 states have call successors, (83), 6 states have call predecessors, (83), 6 states have return successors, (82), 14 states have call predecessors, (82), 14 states have call successors, (82) Word has length 274 [2023-12-21 11:32:32,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:32:32,817 INFO L225 Difference]: With dead ends: 61712 [2023-12-21 11:32:32,817 INFO L226 Difference]: Without dead ends: 32167 [2023-12-21 11:32:32,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 708 GetRequests, 617 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2413 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1527, Invalid=7029, Unknown=0, NotChecked=0, Total=8556 [2023-12-21 11:32:32,845 INFO L413 NwaCegarLoop]: 523 mSDtfsCounter, 2420 mSDsluCounter, 4097 mSDsCounter, 0 mSdLazyCounter, 2071 mSolverCounterSat, 932 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2420 SdHoareTripleChecker+Valid, 4620 SdHoareTripleChecker+Invalid, 3003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 932 IncrementalHoareTripleChecker+Valid, 2071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-21 11:32:32,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2420 Valid, 4620 Invalid, 3003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [932 Valid, 2071 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-21 11:32:32,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32167 states. [2023-12-21 11:32:42,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32167 to 30286. [2023-12-21 11:32:42,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30286 states, 22958 states have (on average 1.2079449429392803) internal successors, (27732), 23177 states have internal predecessors, (27732), 4319 states have call successors, (4319), 2975 states have call predecessors, (4319), 3008 states have return successors, (4348), 4133 states have call predecessors, (4348), 4314 states have call successors, (4348) [2023-12-21 11:32:42,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30286 states to 30286 states and 36399 transitions. [2023-12-21 11:32:42,485 INFO L78 Accepts]: Start accepts. Automaton has 30286 states and 36399 transitions. Word has length 274 [2023-12-21 11:32:42,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:32:42,485 INFO L495 AbstractCegarLoop]: Abstraction has 30286 states and 36399 transitions. [2023-12-21 11:32:42,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 16.0) internal successors, (400), 25 states have internal predecessors, (400), 14 states have call successors, (83), 6 states have call predecessors, (83), 6 states have return successors, (82), 14 states have call predecessors, (82), 14 states have call successors, (82) [2023-12-21 11:32:42,485 INFO L276 IsEmpty]: Start isEmpty. Operand 30286 states and 36399 transitions. [2023-12-21 11:32:42,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2023-12-21 11:32:42,498 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:32:42,498 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:32:42,504 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 11:32:42,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:32:42,699 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:32:42,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:32:42,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1704598664, now seen corresponding path program 1 times [2023-12-21 11:32:42,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:32:42,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023296036] [2023-12-21 11:32:42,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:32:42,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:32:42,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:43,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:32:43,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:43,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-21 11:32:43,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:43,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-21 11:32:43,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:43,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-21 11:32:43,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:43,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 11:32:43,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:43,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-21 11:32:43,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:43,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 11:32:43,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:43,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 11:32:43,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:43,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 11:32:43,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:43,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 11:32:43,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:43,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 11:32:43,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:43,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 11:32:43,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:43,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-21 11:32:43,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:43,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-12-21 11:32:43,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:43,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-21 11:32:43,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:43,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-12-21 11:32:43,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:43,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-12-21 11:32:43,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:43,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2023-12-21 11:32:43,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:43,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2023-12-21 11:32:43,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:43,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2023-12-21 11:32:43,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:43,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2023-12-21 11:32:43,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:43,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2023-12-21 11:32:43,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:43,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2023-12-21 11:32:43,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:43,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2023-12-21 11:32:43,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:43,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2023-12-21 11:32:43,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:43,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2023-12-21 11:32:43,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:43,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2023-12-21 11:32:43,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:43,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2023-12-21 11:32:43,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:43,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2023-12-21 11:32:43,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:43,359 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 40 proven. 40 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2023-12-21 11:32:43,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:32:43,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023296036] [2023-12-21 11:32:43,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023296036] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:32:43,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305231372] [2023-12-21 11:32:43,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:32:43,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:32:43,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:32:43,360 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 11:32:43,362 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 11:32:43,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:43,568 INFO L262 TraceCheckSpWp]: Trace formula consists of 1068 conjuncts, 64 conjunts are in the unsatisfiable core [2023-12-21 11:32:43,572 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:32:44,881 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 168 proven. 129 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-12-21 11:32:44,881 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:32:46,583 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 49 proven. 31 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2023-12-21 11:32:46,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305231372] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:32:46,584 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:32:46,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 14] total 35 [2023-12-21 11:32:46,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356878626] [2023-12-21 11:32:46,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:32:46,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-21 11:32:46,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:32:46,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-21 11:32:46,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1014, Unknown=0, NotChecked=0, Total=1190 [2023-12-21 11:32:46,586 INFO L87 Difference]: Start difference. First operand 30286 states and 36399 transitions. Second operand has 35 states, 32 states have (on average 12.09375) internal successors, (387), 32 states have internal predecessors, (387), 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) [2023-12-21 11:33:07,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:33:07,342 INFO L93 Difference]: Finished difference Result 59719 states and 71967 transitions. [2023-12-21 11:33:07,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2023-12-21 11:33:07,343 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 32 states have (on average 12.09375) internal successors, (387), 32 states have internal predecessors, (387), 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) Word has length 278 [2023-12-21 11:33:07,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:33:07,404 INFO L225 Difference]: With dead ends: 59719 [2023-12-21 11:33:07,404 INFO L226 Difference]: Without dead ends: 31041 [2023-12-21 11:33:07,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 753 GetRequests, 623 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5820 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=2214, Invalid=15078, Unknown=0, NotChecked=0, Total=17292 [2023-12-21 11:33:07,432 INFO L413 NwaCegarLoop]: 489 mSDtfsCounter, 1461 mSDsluCounter, 6988 mSDsCounter, 0 mSdLazyCounter, 4068 mSolverCounterSat, 361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1462 SdHoareTripleChecker+Valid, 7477 SdHoareTripleChecker+Invalid, 4429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 361 IncrementalHoareTripleChecker+Valid, 4068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-21 11:33:07,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1462 Valid, 7477 Invalid, 4429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [361 Valid, 4068 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-21 11:33:07,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31041 states. [2023-12-21 11:33:16,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31041 to 30139. [2023-12-21 11:33:16,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30139 states, 22839 states have (on average 1.2081527212224703) internal successors, (27593), 23058 states have internal predecessors, (27593), 4305 states have call successors, (4305), 2961 states have call predecessors, (4305), 2994 states have return successors, (4334), 4119 states have call predecessors, (4334), 4300 states have call successors, (4334) [2023-12-21 11:33:16,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30139 states to 30139 states and 36232 transitions. [2023-12-21 11:33:16,998 INFO L78 Accepts]: Start accepts. Automaton has 30139 states and 36232 transitions. Word has length 278 [2023-12-21 11:33:16,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:33:16,998 INFO L495 AbstractCegarLoop]: Abstraction has 30139 states and 36232 transitions. [2023-12-21 11:33:16,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 32 states have (on average 12.09375) internal successors, (387), 32 states have internal predecessors, (387), 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) [2023-12-21 11:33:16,998 INFO L276 IsEmpty]: Start isEmpty. Operand 30139 states and 36232 transitions. [2023-12-21 11:33:17,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2023-12-21 11:33:17,011 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:33:17,011 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 7, 7, 7, 4, 4, 4, 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, 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 11:33:17,018 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 11:33:17,211 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,SelfDestructingSolverStorable67 [2023-12-21 11:33:17,212 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:33:17,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:33:17,212 INFO L85 PathProgramCache]: Analyzing trace with hash 664437838, now seen corresponding path program 1 times [2023-12-21 11:33:17,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:33:17,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483739075] [2023-12-21 11:33:17,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:33:17,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:33:17,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:17,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:33:17,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:17,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:33:17,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:17,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-21 11:33:17,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:17,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-21 11:33:17,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:17,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 11:33:17,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:17,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 11:33:17,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:17,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 11:33:17,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:17,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 11:33:17,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:17,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 11:33:17,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:17,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 11:33:17,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:17,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 11:33:17,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:17,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-21 11:33:17,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:17,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-12-21 11:33:17,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:17,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-21 11:33:17,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:17,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-12-21 11:33:17,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:17,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-12-21 11:33:17,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:17,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-12-21 11:33:17,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:17,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2023-12-21 11:33:17,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:17,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-12-21 11:33:17,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:17,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2023-12-21 11:33:17,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:17,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2023-12-21 11:33:17,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:17,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2023-12-21 11:33:17,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:17,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2023-12-21 11:33:17,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:17,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-12-21 11:33:17,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:17,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2023-12-21 11:33:17,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:17,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2023-12-21 11:33:17,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:17,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2023-12-21 11:33:17,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:17,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2023-12-21 11:33:17,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:17,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2023-12-21 11:33:17,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:17,425 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2023-12-21 11:33:17,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:33:17,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483739075] [2023-12-21 11:33:17,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483739075] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:33:17,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:33:17,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:33:17,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066937609] [2023-12-21 11:33:17,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:33:17,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:33:17,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:33:17,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:33:17,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:33:17,426 INFO L87 Difference]: Start difference. First operand 30139 states and 36232 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-21 11:33:26,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:33:26,767 INFO L93 Difference]: Finished difference Result 58328 states and 70418 transitions. [2023-12-21 11:33:26,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 11:33:26,768 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 280 [2023-12-21 11:33:26,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:33:26,829 INFO L225 Difference]: With dead ends: 58328 [2023-12-21 11:33:26,829 INFO L226 Difference]: Without dead ends: 29803 [2023-12-21 11:33:26,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 63 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 11:33:26,865 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 7 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:33:26,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 694 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:33:26,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29803 states. [2023-12-21 11:33:36,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29803 to 29674. [2023-12-21 11:33:36,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29674 states, 22578 states have (on average 1.186907609177075) internal successors, (26798), 22797 states have internal predecessors, (26798), 4116 states have call successors, (4116), 2946 states have call predecessors, (4116), 2979 states have return successors, (4145), 3930 states have call predecessors, (4145), 4111 states have call successors, (4145) [2023-12-21 11:33:36,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29674 states to 29674 states and 35059 transitions. [2023-12-21 11:33:36,331 INFO L78 Accepts]: Start accepts. Automaton has 29674 states and 35059 transitions. Word has length 280 [2023-12-21 11:33:36,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:33:36,331 INFO L495 AbstractCegarLoop]: Abstraction has 29674 states and 35059 transitions. [2023-12-21 11:33:36,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-21 11:33:36,331 INFO L276 IsEmpty]: Start isEmpty. Operand 29674 states and 35059 transitions. [2023-12-21 11:33:36,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2023-12-21 11:33:36,344 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:33:36,344 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 6, 6, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-21 11:33:36,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2023-12-21 11:33:36,344 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:33:36,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:33:36,344 INFO L85 PathProgramCache]: Analyzing trace with hash -834952252, now seen corresponding path program 1 times [2023-12-21 11:33:36,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:33:36,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10899132] [2023-12-21 11:33:36,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:33:36,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:33:36,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:36,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:33:36,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:36,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:33:36,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:36,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-21 11:33:36,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:36,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-21 11:33:36,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:36,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 11:33:36,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:36,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 11:33:36,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:36,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 11:33:36,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:36,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 11:33:36,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:36,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 11:33:36,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:36,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 11:33:36,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:36,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 11:33:36,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:36,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-21 11:33:36,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:36,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-21 11:33:36,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:36,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-21 11:33:36,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:36,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2023-12-21 11:33:36,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:36,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-21 11:33:36,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:36,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-12-21 11:33:36,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:36,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2023-12-21 11:33:36,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:36,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-12-21 11:33:36,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:36,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2023-12-21 11:33:36,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:36,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2023-12-21 11:33:36,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:36,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2023-12-21 11:33:36,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:36,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2023-12-21 11:33:36,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:36,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2023-12-21 11:33:36,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:36,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2023-12-21 11:33:36,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:36,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2023-12-21 11:33:36,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:36,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2023-12-21 11:33:36,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:36,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2023-12-21 11:33:36,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:36,598 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 51 proven. 31 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2023-12-21 11:33:36,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:33:36,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10899132] [2023-12-21 11:33:36,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10899132] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:33:36,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816633902] [2023-12-21 11:33:36,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:33:36,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:33:36,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:33:36,601 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 11:33:36,609 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 11:33:36,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:36,849 INFO L262 TraceCheckSpWp]: Trace formula consists of 1071 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-21 11:33:36,853 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:33:37,206 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 134 proven. 167 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-21 11:33:37,206 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:33:37,449 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 51 proven. 31 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2023-12-21 11:33:37,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816633902] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:33:37,450 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:33:37,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 7] total 20 [2023-12-21 11:33:37,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370969854] [2023-12-21 11:33:37,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:33:37,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-21 11:33:37,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:33:37,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-21 11:33:37,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2023-12-21 11:33:37,452 INFO L87 Difference]: Start difference. First operand 29674 states and 35059 transitions. Second operand has 20 states, 20 states have (on average 18.2) internal successors, (364), 20 states have internal predecessors, (364), 11 states have call successors, (67), 6 states have call predecessors, (67), 7 states have return successors, (66), 11 states have call predecessors, (66), 11 states have call successors, (66) [2023-12-21 11:33:48,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:33:48,258 INFO L93 Difference]: Finished difference Result 60255 states and 71333 transitions. [2023-12-21 11:33:48,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-21 11:33:48,259 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 18.2) internal successors, (364), 20 states have internal predecessors, (364), 11 states have call successors, (67), 6 states have call predecessors, (67), 7 states have return successors, (66), 11 states have call predecessors, (66), 11 states have call successors, (66) Word has length 278 [2023-12-21 11:33:48,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:33:48,325 INFO L225 Difference]: With dead ends: 60255 [2023-12-21 11:33:48,325 INFO L226 Difference]: Without dead ends: 31817 [2023-12-21 11:33:48,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 660 GetRequests, 614 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 491 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=421, Invalid=1835, Unknown=0, NotChecked=0, Total=2256 [2023-12-21 11:33:48,360 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 1165 mSDsluCounter, 1813 mSDsCounter, 0 mSdLazyCounter, 1455 mSolverCounterSat, 360 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1171 SdHoareTripleChecker+Valid, 2122 SdHoareTripleChecker+Invalid, 1815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 360 IncrementalHoareTripleChecker+Valid, 1455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 11:33:48,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1171 Valid, 2122 Invalid, 1815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [360 Valid, 1455 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 11:33:48,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31817 states. [2023-12-21 11:33:57,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31817 to 30454. [2023-12-21 11:33:57,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30454 states, 23170 states have (on average 1.175399223133362) internal successors, (27234), 23396 states have internal predecessors, (27234), 4202 states have call successors, (4202), 3032 states have call predecessors, (4202), 3081 states have return successors, (4247), 4025 states have call predecessors, (4247), 4197 states have call successors, (4247) [2023-12-21 11:33:57,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30454 states to 30454 states and 35683 transitions. [2023-12-21 11:33:57,979 INFO L78 Accepts]: Start accepts. Automaton has 30454 states and 35683 transitions. Word has length 278 [2023-12-21 11:33:57,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:33:57,980 INFO L495 AbstractCegarLoop]: Abstraction has 30454 states and 35683 transitions. [2023-12-21 11:33:57,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 18.2) internal successors, (364), 20 states have internal predecessors, (364), 11 states have call successors, (67), 6 states have call predecessors, (67), 7 states have return successors, (66), 11 states have call predecessors, (66), 11 states have call successors, (66) [2023-12-21 11:33:57,980 INFO L276 IsEmpty]: Start isEmpty. Operand 30454 states and 35683 transitions. [2023-12-21 11:33:57,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2023-12-21 11:33:57,994 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:33:57,994 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, 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 11:33:58,001 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2023-12-21 11:33:58,194 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 11:33:58,195 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:33:58,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:33:58,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1634641658, now seen corresponding path program 1 times [2023-12-21 11:33:58,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:33:58,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503783960] [2023-12-21 11:33:58,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:33:58,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:33:58,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:59,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:33:59,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:59,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-21 11:33:59,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:59,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-21 11:33:59,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:59,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-21 11:33:59,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:59,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 11:33:59,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:59,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-21 11:33:59,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:59,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 11:33:59,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:59,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 11:33:59,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:59,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 11:33:59,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:59,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 11:33:59,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:59,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 11:33:59,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:59,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 11:33:59,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:59,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-21 11:33:59,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:59,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-21 11:33:59,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:59,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-21 11:33:59,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:59,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-12-21 11:33:59,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:59,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-12-21 11:33:59,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:59,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2023-12-21 11:33:59,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:59,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2023-12-21 11:33:59,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:59,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2023-12-21 11:33:59,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:59,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2023-12-21 11:33:59,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:59,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2023-12-21 11:33:59,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:59,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2023-12-21 11:33:59,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:59,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-12-21 11:33:59,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:59,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2023-12-21 11:33:59,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:59,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2023-12-21 11:33:59,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:59,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2023-12-21 11:33:59,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:59,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2023-12-21 11:33:59,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:59,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2023-12-21 11:33:59,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:59,131 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 53 proven. 38 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2023-12-21 11:33:59,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:33:59,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503783960] [2023-12-21 11:33:59,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503783960] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:33:59,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211396519] [2023-12-21 11:33:59,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:33:59,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:33:59,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:33:59,133 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 11:33:59,135 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 11:33:59,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:59,360 INFO L262 TraceCheckSpWp]: Trace formula consists of 1068 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-21 11:33:59,365 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:33:59,861 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 175 proven. 146 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-12-21 11:33:59,862 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:34:00,307 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 62 proven. 29 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2023-12-21 11:34:00,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211396519] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:34:00,308 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:34:00,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 10] total 29 [2023-12-21 11:34:00,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288236664] [2023-12-21 11:34:00,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:34:00,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-21 11:34:00,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:34:00,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-21 11:34:00,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=717, Unknown=0, NotChecked=0, Total=812 [2023-12-21 11:34:00,310 INFO L87 Difference]: Start difference. First operand 30454 states and 35683 transitions. Second operand has 29 states, 26 states have (on average 15.153846153846153) internal successors, (394), 26 states have internal predecessors, (394), 12 states have call successors, (82), 6 states have call predecessors, (82), 10 states have return successors, (81), 15 states have call predecessors, (81), 12 states have call successors, (81) [2023-12-21 11:34:17,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:34:17,323 INFO L93 Difference]: Finished difference Result 70461 states and 82832 transitions. [2023-12-21 11:34:17,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2023-12-21 11:34:17,324 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 26 states have (on average 15.153846153846153) internal successors, (394), 26 states have internal predecessors, (394), 12 states have call successors, (82), 6 states have call predecessors, (82), 10 states have return successors, (81), 15 states have call predecessors, (81), 12 states have call successors, (81) Word has length 279 [2023-12-21 11:34:17,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:34:17,406 INFO L225 Difference]: With dead ends: 70461 [2023-12-21 11:34:17,406 INFO L226 Difference]: Without dead ends: 41325 [2023-12-21 11:34:17,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 778 GetRequests, 639 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6556 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=2045, Invalid=17695, Unknown=0, NotChecked=0, Total=19740 [2023-12-21 11:34:17,451 INFO L413 NwaCegarLoop]: 374 mSDtfsCounter, 1707 mSDsluCounter, 5166 mSDsCounter, 0 mSdLazyCounter, 4302 mSolverCounterSat, 524 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1707 SdHoareTripleChecker+Valid, 5540 SdHoareTripleChecker+Invalid, 4826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 524 IncrementalHoareTripleChecker+Valid, 4302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:34:17,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1707 Valid, 5540 Invalid, 4826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [524 Valid, 4302 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-21 11:34:17,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41325 states. [2023-12-21 11:34:30,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41325 to 37881. [2023-12-21 11:34:30,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37881 states, 28957 states have (on average 1.1758469454708707) internal successors, (34049), 29228 states have internal predecessors, (34049), 5078 states have call successors, (5078), 3733 states have call predecessors, (5078), 3845 states have return successors, (5186), 4919 states have call predecessors, (5186), 5073 states have call successors, (5186) [2023-12-21 11:34:30,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37881 states to 37881 states and 44313 transitions. [2023-12-21 11:34:30,334 INFO L78 Accepts]: Start accepts. Automaton has 37881 states and 44313 transitions. Word has length 279 [2023-12-21 11:34:30,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:34:30,334 INFO L495 AbstractCegarLoop]: Abstraction has 37881 states and 44313 transitions. [2023-12-21 11:34:30,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 26 states have (on average 15.153846153846153) internal successors, (394), 26 states have internal predecessors, (394), 12 states have call successors, (82), 6 states have call predecessors, (82), 10 states have return successors, (81), 15 states have call predecessors, (81), 12 states have call successors, (81) [2023-12-21 11:34:30,335 INFO L276 IsEmpty]: Start isEmpty. Operand 37881 states and 44313 transitions. [2023-12-21 11:34:30,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2023-12-21 11:34:30,351 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:34:30,351 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, 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 11:34:30,358 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 11:34:30,552 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 11:34:30,552 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:34:30,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:34:30,553 INFO L85 PathProgramCache]: Analyzing trace with hash 2045252024, now seen corresponding path program 1 times [2023-12-21 11:34:30,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:34:30,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821559487] [2023-12-21 11:34:30,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:34:30,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:34:30,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:31,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:34:31,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:31,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-21 11:34:31,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:31,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-21 11:34:31,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:31,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-21 11:34:31,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:31,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 11:34:31,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:31,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-21 11:34:31,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:31,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 11:34:31,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:31,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 11:34:31,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:31,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 11:34:31,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:31,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 11:34:31,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:31,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 11:34:31,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:31,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 11:34:31,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:31,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-21 11:34:31,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:31,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-21 11:34:31,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:31,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-21 11:34:31,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:31,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-12-21 11:34:31,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:31,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-12-21 11:34:31,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:31,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2023-12-21 11:34:31,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:31,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2023-12-21 11:34:31,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:31,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2023-12-21 11:34:31,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:31,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2023-12-21 11:34:31,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:31,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2023-12-21 11:34:31,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:31,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2023-12-21 11:34:31,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:31,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-12-21 11:34:31,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:31,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2023-12-21 11:34:31,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:31,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2023-12-21 11:34:31,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:31,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2023-12-21 11:34:31,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:31,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2023-12-21 11:34:31,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:31,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2023-12-21 11:34:31,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:31,303 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 56 proven. 35 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2023-12-21 11:34:31,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:34:31,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821559487] [2023-12-21 11:34:31,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821559487] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:34:31,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578263440] [2023-12-21 11:34:31,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:34:31,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:34:31,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:34:31,304 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:34:31,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-12-21 11:34:31,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:31,509 INFO L262 TraceCheckSpWp]: Trace formula consists of 1067 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-21 11:34:31,512 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:34:31,723 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 231 proven. 11 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2023-12-21 11:34:31,723 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:34:31,972 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 65 proven. 3 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2023-12-21 11:34:31,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578263440] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:34:31,972 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:34:31,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 9] total 25 [2023-12-21 11:34:31,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11082415] [2023-12-21 11:34:31,972 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:34:31,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-21 11:34:31,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:34:31,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-21 11:34:31,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=524, Unknown=0, NotChecked=0, Total=600 [2023-12-21 11:34:31,974 INFO L87 Difference]: Start difference. First operand 37881 states and 44313 transitions. Second operand has 25 states, 24 states have (on average 12.541666666666666) internal successors, (301), 24 states have internal predecessors, (301), 10 states have call successors, (67), 5 states have call predecessors, (67), 8 states have return successors, (67), 10 states have call predecessors, (67), 10 states have call successors, (67) [2023-12-21 11:34:45,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:34:45,823 INFO L93 Difference]: Finished difference Result 74694 states and 87502 transitions. [2023-12-21 11:34:45,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-12-21 11:34:45,824 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 12.541666666666666) internal successors, (301), 24 states have internal predecessors, (301), 10 states have call successors, (67), 5 states have call predecessors, (67), 8 states have return successors, (67), 10 states have call predecessors, (67), 10 states have call successors, (67) Word has length 279 [2023-12-21 11:34:45,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:34:45,911 INFO L225 Difference]: With dead ends: 74694 [2023-12-21 11:34:45,911 INFO L226 Difference]: Without dead ends: 38407 [2023-12-21 11:34:45,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 697 GetRequests, 620 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1637 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=799, Invalid=5363, Unknown=0, NotChecked=0, Total=6162 [2023-12-21 11:34:45,952 INFO L413 NwaCegarLoop]: 393 mSDtfsCounter, 1045 mSDsluCounter, 4686 mSDsCounter, 0 mSdLazyCounter, 2578 mSolverCounterSat, 269 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1046 SdHoareTripleChecker+Valid, 5079 SdHoareTripleChecker+Invalid, 2847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 269 IncrementalHoareTripleChecker+Valid, 2578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-21 11:34:45,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1046 Valid, 5079 Invalid, 2847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [269 Valid, 2578 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-21 11:34:45,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38407 states. [2023-12-21 11:34:57,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38407 to 37549. [2023-12-21 11:34:57,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37549 states, 28700 states have (on average 1.1760975609756097) internal successors, (33754), 28967 states have internal predecessors, (33754), 5044 states have call successors, (5044), 3704 states have call predecessors, (5044), 3804 states have return successors, (5140), 4877 states have call predecessors, (5140), 5039 states have call successors, (5140) [2023-12-21 11:34:57,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37549 states to 37549 states and 43938 transitions. [2023-12-21 11:34:57,765 INFO L78 Accepts]: Start accepts. Automaton has 37549 states and 43938 transitions. Word has length 279 [2023-12-21 11:34:57,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:34:57,765 INFO L495 AbstractCegarLoop]: Abstraction has 37549 states and 43938 transitions. [2023-12-21 11:34:57,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 12.541666666666666) internal successors, (301), 24 states have internal predecessors, (301), 10 states have call successors, (67), 5 states have call predecessors, (67), 8 states have return successors, (67), 10 states have call predecessors, (67), 10 states have call successors, (67) [2023-12-21 11:34:57,765 INFO L276 IsEmpty]: Start isEmpty. Operand 37549 states and 43938 transitions. [2023-12-21 11:34:57,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2023-12-21 11:34:57,777 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:34:57,777 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 6, 6, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-21 11:34:57,782 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2023-12-21 11:34:57,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable71 [2023-12-21 11:34:57,977 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:34:57,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:34:57,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1498474911, now seen corresponding path program 1 times [2023-12-21 11:34:57,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:34:57,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183619579] [2023-12-21 11:34:57,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:34:57,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:34:58,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:58,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:34:58,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:58,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-21 11:34:58,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:58,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-21 11:34:58,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:58,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-21 11:34:58,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:58,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 11:34:58,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:58,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-21 11:34:58,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:58,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 11:34:58,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:58,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 11:34:58,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:58,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 11:34:58,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:58,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 11:34:58,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:58,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 11:34:58,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:58,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 11:34:58,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:58,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-21 11:34:58,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:58,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-12-21 11:34:58,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:58,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-12-21 11:34:58,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:58,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-12-21 11:34:58,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:58,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-12-21 11:34:58,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:58,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2023-12-21 11:34:58,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:58,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-12-21 11:34:58,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:58,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2023-12-21 11:34:58,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:58,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2023-12-21 11:34:58,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:58,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2023-12-21 11:34:58,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:58,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2023-12-21 11:34:58,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:58,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2023-12-21 11:34:58,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:58,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2023-12-21 11:34:58,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:58,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2023-12-21 11:34:58,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:58,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2023-12-21 11:34:58,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:58,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2023-12-21 11:34:58,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:58,673 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 46 proven. 48 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2023-12-21 11:34:58,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:34:58,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183619579] [2023-12-21 11:34:58,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183619579] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:34:58,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874876292] [2023-12-21 11:34:58,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:34:58,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:34:58,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:34:58,677 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:34:58,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-12-21 11:34:58,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:58,901 INFO L262 TraceCheckSpWp]: Trace formula consists of 1091 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-21 11:34:58,904 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:35:00,239 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 182 proven. 137 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-12-21 11:35:00,240 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:35:02,152 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 36 proven. 58 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2023-12-21 11:35:02,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874876292] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:35:02,152 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:35:02,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 30 [2023-12-21 11:35:02,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698972770] [2023-12-21 11:35:02,152 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:35:02,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-21 11:35:02,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:35:02,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-21 11:35:02,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=755, Unknown=0, NotChecked=0, Total=870 [2023-12-21 11:35:02,154 INFO L87 Difference]: Start difference. First operand 37549 states and 43938 transitions. Second operand has 30 states, 30 states have (on average 13.733333333333333) internal successors, (412), 30 states have internal predecessors, (412), 15 states have call successors, (79), 7 states have call predecessors, (79), 7 states have return successors, (78), 15 states have call predecessors, (78), 15 states have call successors, (78) [2023-12-21 11:35:18,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:35:18,854 INFO L93 Difference]: Finished difference Result 74268 states and 86933 transitions. [2023-12-21 11:35:18,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2023-12-21 11:35:18,855 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 13.733333333333333) internal successors, (412), 30 states have internal predecessors, (412), 15 states have call successors, (79), 7 states have call predecessors, (79), 7 states have return successors, (78), 15 states have call predecessors, (78), 15 states have call successors, (78) Word has length 279 [2023-12-21 11:35:18,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:35:18,935 INFO L225 Difference]: With dead ends: 74268 [2023-12-21 11:35:18,935 INFO L226 Difference]: Without dead ends: 37352 [2023-12-21 11:35:18,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 722 GetRequests, 620 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2971 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1776, Invalid=8936, Unknown=0, NotChecked=0, Total=10712 [2023-12-21 11:35:18,972 INFO L413 NwaCegarLoop]: 507 mSDtfsCounter, 3343 mSDsluCounter, 4879 mSDsCounter, 0 mSdLazyCounter, 3421 mSolverCounterSat, 1011 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3343 SdHoareTripleChecker+Valid, 5386 SdHoareTripleChecker+Invalid, 4432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1011 IncrementalHoareTripleChecker+Valid, 3421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-21 11:35:18,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3343 Valid, 5386 Invalid, 4432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1011 Valid, 3421 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-21 11:35:18,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37352 states. [2023-12-21 11:35:29,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37352 to 33327. [2023-12-21 11:35:29,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33327 states, 25426 states have (on average 1.1694721938173522) internal successors, (29735), 25671 states have internal predecessors, (29735), 4503 states have call successors, (4503), 3299 states have call predecessors, (4503), 3397 states have return successors, (4597), 4356 states have call predecessors, (4597), 4498 states have call successors, (4597) [2023-12-21 11:35:29,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33327 states to 33327 states and 38835 transitions. [2023-12-21 11:35:29,750 INFO L78 Accepts]: Start accepts. Automaton has 33327 states and 38835 transitions. Word has length 279 [2023-12-21 11:35:29,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:35:29,750 INFO L495 AbstractCegarLoop]: Abstraction has 33327 states and 38835 transitions. [2023-12-21 11:35:29,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 13.733333333333333) internal successors, (412), 30 states have internal predecessors, (412), 15 states have call successors, (79), 7 states have call predecessors, (79), 7 states have return successors, (78), 15 states have call predecessors, (78), 15 states have call successors, (78) [2023-12-21 11:35:29,750 INFO L276 IsEmpty]: Start isEmpty. Operand 33327 states and 38835 transitions. [2023-12-21 11:35:29,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2023-12-21 11:35:29,762 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:35:29,762 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 6, 6, 5, 5, 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, 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] [2023-12-21 11:35:29,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2023-12-21 11:35:29,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:35:29,963 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:35:29,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:35:29,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1731844026, now seen corresponding path program 1 times [2023-12-21 11:35:29,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:35:29,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058124275] [2023-12-21 11:35:29,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:35:29,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:35:29,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:30,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:35:30,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:30,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:35:30,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:30,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-21 11:35:30,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:30,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-21 11:35:30,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:30,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 11:35:30,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:30,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 11:35:30,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:30,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 11:35:30,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:30,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 11:35:30,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:30,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 11:35:30,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:30,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 11:35:30,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:30,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 11:35:30,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:30,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-21 11:35:30,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:30,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-21 11:35:30,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:30,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-21 11:35:30,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:30,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2023-12-21 11:35:30,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:30,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-21 11:35:30,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:30,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-12-21 11:35:30,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:30,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2023-12-21 11:35:30,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:30,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-12-21 11:35:30,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:30,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2023-12-21 11:35:30,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:30,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2023-12-21 11:35:30,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:30,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2023-12-21 11:35:30,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:30,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2023-12-21 11:35:30,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:30,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2023-12-21 11:35:30,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:30,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2023-12-21 11:35:30,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:30,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2023-12-21 11:35:30,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:30,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2023-12-21 11:35:30,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:30,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2023-12-21 11:35:30,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:30,795 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 65 proven. 21 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2023-12-21 11:35:30,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:35:30,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058124275] [2023-12-21 11:35:30,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058124275] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:35:30,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76946063] [2023-12-21 11:35:30,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:35:30,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:35:30,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:35:30,801 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:35:30,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-12-21 11:35:31,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:31,005 INFO L262 TraceCheckSpWp]: Trace formula consists of 1076 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-21 11:35:31,009 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:35:31,659 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 180 proven. 133 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-12-21 11:35:31,660 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:35:33,972 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 65 proven. 21 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2023-12-21 11:35:33,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76946063] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:35:33,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:35:33,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 9] total 31 [2023-12-21 11:35:33,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145323863] [2023-12-21 11:35:33,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:35:33,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-21 11:35:33,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:35:33,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-21 11:35:33,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=814, Unknown=0, NotChecked=0, Total=930 [2023-12-21 11:35:33,975 INFO L87 Difference]: Start difference. First operand 33327 states and 38835 transitions. Second operand has 31 states, 31 states have (on average 12.32258064516129) internal successors, (382), 31 states have internal predecessors, (382), 12 states have call successors, (76), 6 states have call predecessors, (76), 8 states have return successors, (75), 12 states have call predecessors, (75), 12 states have call successors, (75) [2023-12-21 11:35:46,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:35:46,584 INFO L93 Difference]: Finished difference Result 65482 states and 76436 transitions. [2023-12-21 11:35:46,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-12-21 11:35:46,585 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 12.32258064516129) internal successors, (382), 31 states have internal predecessors, (382), 12 states have call successors, (76), 6 states have call predecessors, (76), 8 states have return successors, (75), 12 states have call predecessors, (75), 12 states have call successors, (75) Word has length 281 [2023-12-21 11:35:46,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:35:46,654 INFO L225 Difference]: With dead ends: 65482 [2023-12-21 11:35:46,654 INFO L226 Difference]: Without dead ends: 33769 [2023-12-21 11:35:46,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 663 GetRequests, 607 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 800 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=450, Invalid=2856, Unknown=0, NotChecked=0, Total=3306 [2023-12-21 11:35:46,828 INFO L413 NwaCegarLoop]: 343 mSDtfsCounter, 499 mSDsluCounter, 3681 mSDsCounter, 0 mSdLazyCounter, 2812 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 4024 SdHoareTripleChecker+Invalid, 2926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 2812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-21 11:35:46,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [504 Valid, 4024 Invalid, 2926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 2812 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-21 11:35:46,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33769 states. [2023-12-21 11:35:57,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33769 to 33320. [2023-12-21 11:35:57,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33320 states, 25419 states have (on average 1.1694401825406193) internal successors, (29726), 25664 states have internal predecessors, (29726), 4503 states have call successors, (4503), 3299 states have call predecessors, (4503), 3397 states have return successors, (4597), 4356 states have call predecessors, (4597), 4498 states have call successors, (4597) [2023-12-21 11:35:57,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33320 states to 33320 states and 38826 transitions. [2023-12-21 11:35:57,683 INFO L78 Accepts]: Start accepts. Automaton has 33320 states and 38826 transitions. Word has length 281 [2023-12-21 11:35:57,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:35:57,683 INFO L495 AbstractCegarLoop]: Abstraction has 33320 states and 38826 transitions. [2023-12-21 11:35:57,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 12.32258064516129) internal successors, (382), 31 states have internal predecessors, (382), 12 states have call successors, (76), 6 states have call predecessors, (76), 8 states have return successors, (75), 12 states have call predecessors, (75), 12 states have call successors, (75) [2023-12-21 11:35:57,683 INFO L276 IsEmpty]: Start isEmpty. Operand 33320 states and 38826 transitions. [2023-12-21 11:35:57,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2023-12-21 11:35:57,694 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:35:57,695 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 6, 6, 5, 5, 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, 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] [2023-12-21 11:35:57,701 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2023-12-21 11:35:57,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable73 [2023-12-21 11:35:57,895 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:35:57,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:35:57,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1825937482, now seen corresponding path program 1 times [2023-12-21 11:35:57,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:35:57,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376536818] [2023-12-21 11:35:57,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:35:57,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:35:57,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:58,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:35:58,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:58,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:35:58,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:58,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-21 11:35:58,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:58,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-21 11:35:58,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:58,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 11:35:58,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:58,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 11:35:58,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:58,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 11:35:58,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:58,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 11:35:58,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:58,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 11:35:58,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:58,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 11:35:58,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:58,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 11:35:58,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:58,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-21 11:35:58,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:58,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-21 11:35:58,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:58,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-21 11:35:58,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:58,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2023-12-21 11:35:58,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:58,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-21 11:35:58,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:58,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-12-21 11:35:58,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:58,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2023-12-21 11:35:58,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:58,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-12-21 11:35:58,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:58,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2023-12-21 11:35:58,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:58,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2023-12-21 11:35:58,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:58,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2023-12-21 11:35:58,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:58,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2023-12-21 11:35:58,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:58,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2023-12-21 11:35:58,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:58,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2023-12-21 11:35:58,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:58,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2023-12-21 11:35:58,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:58,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2023-12-21 11:35:58,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:58,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2023-12-21 11:35:58,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:58,268 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 35 proven. 52 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2023-12-21 11:35:58,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:35:58,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376536818] [2023-12-21 11:35:58,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376536818] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:35:58,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917511426] [2023-12-21 11:35:58,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:35:58,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:35:58,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:35:58,270 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:35:58,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-12-21 11:35:58,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:58,471 INFO L262 TraceCheckSpWp]: Trace formula consists of 1075 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-21 11:35:58,474 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:35:58,828 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 15 proven. 299 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-12-21 11:35:58,828 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:35:59,150 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 35 proven. 52 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2023-12-21 11:35:59,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917511426] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:35:59,151 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:35:59,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 9] total 18 [2023-12-21 11:35:59,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978484635] [2023-12-21 11:35:59,151 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:35:59,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-21 11:35:59,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:35:59,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-21 11:35:59,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2023-12-21 11:35:59,152 INFO L87 Difference]: Start difference. First operand 33320 states and 38826 transitions. Second operand has 18 states, 18 states have (on average 17.944444444444443) internal successors, (323), 18 states have internal predecessors, (323), 10 states have call successors, (67), 7 states have call predecessors, (67), 7 states have return successors, (66), 9 states have call predecessors, (66), 9 states have call successors, (66) [2023-12-21 11:36:12,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:36:12,907 INFO L93 Difference]: Finished difference Result 71257 states and 83268 transitions. [2023-12-21 11:36:12,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-21 11:36:12,907 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 17.944444444444443) internal successors, (323), 18 states have internal predecessors, (323), 10 states have call successors, (67), 7 states have call predecessors, (67), 7 states have return successors, (66), 9 states have call predecessors, (66), 9 states have call successors, (66) Word has length 283 [2023-12-21 11:36:12,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:36:12,978 INFO L225 Difference]: With dead ends: 71257 [2023-12-21 11:36:12,978 INFO L226 Difference]: Without dead ends: 39551 [2023-12-21 11:36:13,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 666 GetRequests, 623 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=342, Invalid=1638, Unknown=0, NotChecked=0, Total=1980 [2023-12-21 11:36:13,007 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 968 mSDsluCounter, 2452 mSDsCounter, 0 mSdLazyCounter, 1681 mSolverCounterSat, 288 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 2767 SdHoareTripleChecker+Invalid, 1969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 288 IncrementalHoareTripleChecker+Valid, 1681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 11:36:13,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [972 Valid, 2767 Invalid, 1969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [288 Valid, 1681 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 11:36:13,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39551 states. [2023-12-21 11:36:24,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39551 to 36874. [2023-12-21 11:36:24,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36874 states, 28137 states have (on average 1.1717667128691758) internal successors, (32970), 28412 states have internal predecessors, (32970), 4979 states have call successors, (4979), 3648 states have call predecessors, (4979), 3757 states have return successors, (5084), 4813 states have call predecessors, (5084), 4974 states have call successors, (5084) [2023-12-21 11:36:25,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36874 states to 36874 states and 43033 transitions. [2023-12-21 11:36:25,024 INFO L78 Accepts]: Start accepts. Automaton has 36874 states and 43033 transitions. Word has length 283 [2023-12-21 11:36:25,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:36:25,025 INFO L495 AbstractCegarLoop]: Abstraction has 36874 states and 43033 transitions. [2023-12-21 11:36:25,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 17.944444444444443) internal successors, (323), 18 states have internal predecessors, (323), 10 states have call successors, (67), 7 states have call predecessors, (67), 7 states have return successors, (66), 9 states have call predecessors, (66), 9 states have call successors, (66) [2023-12-21 11:36:25,025 INFO L276 IsEmpty]: Start isEmpty. Operand 36874 states and 43033 transitions. [2023-12-21 11:36:25,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2023-12-21 11:36:25,036 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:36:25,036 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 6, 6, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 11:36:25,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2023-12-21 11:36:25,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:36:25,237 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:36:25,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:36:25,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1840942780, now seen corresponding path program 1 times [2023-12-21 11:36:25,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:36:25,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000707061] [2023-12-21 11:36:25,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:36:25,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:36:25,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:25,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:36:25,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:25,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-21 11:36:25,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:25,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-21 11:36:25,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:25,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-21 11:36:25,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:25,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 11:36:25,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:25,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-21 11:36:25,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:25,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 11:36:25,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:25,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 11:36:25,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:25,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 11:36:25,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:25,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 11:36:25,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:25,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 11:36:25,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:25,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 11:36:25,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:25,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-21 11:36:25,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:25,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-12-21 11:36:25,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:25,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2023-12-21 11:36:25,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:25,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-12-21 11:36:25,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:25,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2023-12-21 11:36:25,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:25,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2023-12-21 11:36:25,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:25,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2023-12-21 11:36:25,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:25,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2023-12-21 11:36:25,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:25,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2023-12-21 11:36:25,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:25,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-12-21 11:36:25,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:25,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2023-12-21 11:36:25,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:25,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2023-12-21 11:36:25,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:25,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2023-12-21 11:36:25,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:25,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2023-12-21 11:36:25,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:25,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2023-12-21 11:36:25,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:25,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2023-12-21 11:36:25,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:25,320 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2023-12-21 11:36:25,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:36:25,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000707061] [2023-12-21 11:36:25,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000707061] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:36:25,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:36:25,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:36:25,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033641195] [2023-12-21 11:36:25,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:36:25,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:36:25,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:36:25,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:36:25,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:36:25,321 INFO L87 Difference]: Start difference. First operand 36874 states and 43033 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 11:36:33,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:36:33,804 INFO L93 Difference]: Finished difference Result 61392 states and 71786 transitions. [2023-12-21 11:36:33,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 11:36:33,804 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 284 [2023-12-21 11:36:33,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:36:33,856 INFO L225 Difference]: With dead ends: 61392 [2023-12-21 11:36:33,856 INFO L226 Difference]: Without dead ends: 26128 [2023-12-21 11:36:33,889 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 11:36:33,890 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 15 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:36:33,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 653 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:36:33,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26128 states. Received shutdown request... [2023-12-21 11:36:34,040 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 11:36:34,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2023-12-21 11:36:34,040 WARN L619 AbstractCegarLoop]: Verification canceled: while executing MinimizeSevpa. [2023-12-21 11:36:34,043 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, 1, 1, 1, 1, 1] [2023-12-21 11:36:34,045 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 11:36:34,046 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 11:36:34 BoogieIcfgContainer [2023-12-21 11:36:34,046 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 11:36:34,046 INFO L158 Benchmark]: Toolchain (without parser) took 767795.61ms. Allocated memory was 199.2MB in the beginning and 6.5GB in the end (delta: 6.3GB). Free memory was 141.2MB in the beginning and 3.8GB in the end (delta: -3.7GB). Peak memory consumption was 3.0GB. Max. memory is 8.0GB. [2023-12-21 11:36:34,046 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 199.2MB. Free memory is still 153.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 11:36:34,046 INFO L158 Benchmark]: CACSL2BoogieTranslator took 345.32ms. Allocated memory is still 199.2MB. Free memory was 141.0MB in the beginning and 168.2MB in the end (delta: -27.2MB). Peak memory consumption was 23.0MB. Max. memory is 8.0GB. [2023-12-21 11:36:34,046 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.18ms. Allocated memory is still 199.2MB. Free memory was 168.2MB in the beginning and 164.5MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-21 11:36:34,046 INFO L158 Benchmark]: Boogie Preprocessor took 71.40ms. Allocated memory is still 199.2MB. Free memory was 164.5MB in the beginning and 160.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-21 11:36:34,046 INFO L158 Benchmark]: RCFGBuilder took 735.41ms. Allocated memory is still 199.2MB. Free memory was 160.3MB in the beginning and 120.0MB in the end (delta: 40.4MB). Peak memory consumption was 39.8MB. Max. memory is 8.0GB. [2023-12-21 11:36:34,047 INFO L158 Benchmark]: TraceAbstraction took 766566.17ms. Allocated memory was 199.2MB in the beginning and 6.5GB in the end (delta: 6.3GB). Free memory was 119.4MB in the beginning and 3.8GB in the end (delta: -3.7GB). Peak memory consumption was 3.0GB. Max. memory is 8.0GB. [2023-12-21 11:36:34,047 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 199.2MB. Free memory is still 153.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 345.32ms. Allocated memory is still 199.2MB. Free memory was 141.0MB in the beginning and 168.2MB in the end (delta: -27.2MB). Peak memory consumption was 23.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 70.18ms. Allocated memory is still 199.2MB. Free memory was 168.2MB in the beginning and 164.5MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 71.40ms. Allocated memory is still 199.2MB. Free memory was 164.5MB in the beginning and 160.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 735.41ms. Allocated memory is still 199.2MB. Free memory was 160.3MB in the beginning and 120.0MB in the end (delta: 40.4MB). Peak memory consumption was 39.8MB. Max. memory is 8.0GB. * TraceAbstraction took 766566.17ms. Allocated memory was 199.2MB in the beginning and 6.5GB in the end (delta: 6.3GB). Free memory was 119.4MB in the beginning and 3.8GB in the end (delta: -3.7GB). Peak memory consumption was 3.0GB. 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: 619]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 619). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 171 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 766.5s, OverallIterations: 76, TraceHistogramMax: 9, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.5s, AutomataDifference: 408.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 77797 SdHoareTripleChecker+Valid, 54.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 77628 mSDsluCounter, 212633 SdHoareTripleChecker+Invalid, 45.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 184385 mSDsCounter, 24606 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 91389 IncrementalHoareTripleChecker+Invalid, 115995 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24606 mSolverCounterUnsat, 28248 mSDtfsCounter, 91389 mSolverCounterSat, 1.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 23083 GetRequests, 20130 SyntacticMatches, 40 SemanticMatches, 2913 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79230 ImplicationChecksByTransitivity, 55.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37881occurred in iteration=71, InterpolantAutomatonStates: 2294, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 274.3s AutomataMinimizationTime, 76 MinimizatonAttempts, 124441 StatesRemovedByMinimization, 67 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 2.1s SsaConstructionTime, 5.6s SatisfiabilityAnalysisTime, 63.5s InterpolantComputationTime, 21562 NumberOfCodeBlocks, 21562 NumberOfCodeBlocksAsserted, 117 NumberOfCheckSat, 29943 ConstructedInterpolants, 0 QuantifiedInterpolants, 145347 SizeOfPredicates, 190 NumberOfNonLiveVariables, 35488 ConjunctsInSsa, 974 ConjunctsInUnsatCore, 156 InterpolantComputations, 38 PerfectInterpolantSequences, 24785/29393 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